HMS Unicorn by ianmajor - Corel - Scale 1:75, 1748 to 1771

[EdT]

Lovely work on the wheel, Ian.  Sorry, I can't help much on the binnacle.

 

Ed

[ianmajor]

Thank you Ed.  No need to appolgize on the binnacle info , the level of your contribution to my model making via your logs is incalculable.​

[ianmajor]

Spyglass, thanks for that. I actually found watching that video pleasantly relaxing.

 

It also brought back memories from 30 years back when I worked and lived in Abu Dhabi for a couple of years. Each year there would be sea races from the port area past the Corniche. There were canoe races where each canoe had 120 men with paddles and two steering oarsmen. These were very fast vessels which I believed were originally used by pirates to attack sailing ships becalmed in the Gulf. 

 

For me the high spot of the day was watching the large sailing dhows being raced. These of course were lateen rigged. They were sooo graceful. Unfortunately having sailed south away from the port they then returned to the port by being towed backwards     by power boats. It looked so undignified - I chose to look away at that point. It has probably all changed now.

 

That is a good point you raise and probably exposes my lax use of terminology (especially on subjects off which I know little )​ . Tacking does indeed involve frequent changes of direction. I should really have spoken of change of direction. I based my comments on an entry in a blog that used to exist for the ill starred Bounty replica. In it the chap who was captain at the time referred to a problem that occurred with the mizzen yard where there was a "miscalculation" somewhere. When they swung the yard towards vertical to move it to the other side of the mast the lower end fouled the deck and they could not complete the movement. Ooops.

 

Well, helped by an exchange of PMs with Mike I have decided to mount the wheel behind the mizzen mast. Stand by for some destruction - I may be gone some time!  ​...

[Moonbug]

Good afternoon Ian,

 

   Just now stumbling upon your build.  Very nice indeed.  I'm envious of your skill with the drill press & other tools.  I'm looking forward to continuing to follow it. 

   Additionally - really love the idea of using your grandfather's rule to build some of the deck fixtures.  What a classy touch!

 

- Bug

[ianmajor]

Moonbug, thank you for your kind words. From what I see of your Santa Maria it should be me being envious of your skills not the other way around. Unlike most of the MSW members I don't have very good skills with basic tools and I am also very lazy. So I use the lathe and milling machines to do all the work and make life easy for myself.

 

I love your Santa Maria - I have a soft spot for this ship since it was the one that my Grandfather intended to make during his retirement but never got the opportunity. I still have the 1950's plans which would not pass muster compared with current information.

 

Thanks also for all of the likes.

[ianmajor]

Well now - time to tackle the binnacle. I decided to make the "Amazon/Chuck" type.

 

When considering the construction method I thought back to a colleague of mine from 30 years ago who made models in his lunch breaks in the office. He was a war gamer and used to make vehicles that were small enough to fit several in the palm of his hand. One of these was a single-decker bus which had flush glazing and inside were seats. He explained to me that the seats did not actually exist! The bus was carved from a block of perspex. The seats were cut out of the block as holes then the holes were lined with paint to make the seats look solid. I decided to try this for the binnacle.

 

I cut out a blank from 5mm thick perspex (which was actually 4.5mm thick). I faced it square and down to size in the lathe (I said I was lazy!  ). The block was now 5mm square by 13mm long.

 

Through the centre I drilled a 1.8mm hole. This allowed me to hold it with a cocktail stick whilst working if required. (A miniature LED could be used in it for lighting.)

 

I bored two 2.6mm flat bottomed holes 0.6mm deep in the bottom of the block to represent the compasses.

 

To bore these holes I made a "D" bit. This is simply a length of steel turned down to the correct diameter, the end is filed to half its diameter (making in "D" shape cross section) then the end is beveled to make a cutting edge across the centre.

 

 

The perspex block ended up like this, having cleaned up the inside faces of the holes with solvent.

 

 

Next to give the compasses some body I painted the inside of the holes. Normally when painting a compass you paint the face first then add the characters on top. In this case, the characters were painted in the bottom of the holes first, then the sides of the hole were painted to represent the brass case. Finally the face colour (white) was painted in.

 

 

Photos of replica binnacles show the insides painted white. So I painted the faces of the block that would later be clad with white paint. Again have to think everything in reverse.

 

 

[ianmajor]

To clad the binnacle I used walnut. Not ideal but it is what I have. I stuck a 5mm square block on top and another one on the bottom of the perspex. Since the perspex was only 4.5mm thick I was able to leave a slight overhang top and bottom at the front. 

 

I milled some walnut sheet down to 0.5mm thick and a piece of this was stuck on the front of the perspex to represent the cover over the lamp.

 

The last block was a piece of 2 x 5mm walnut stuck on the bottom .

 

The next photo shows this. It appears on the screen about 8 times full size so rather exposes the irregularities in the surface of the wood!

 

 

The top and bottom blocks were shaped....

 

 

....then the whole was put in the mill to cut out the centre of the top block. 

 

I then added the sides of the lamp flue cover. The following photo reveals a couple of issues.

 

The first is that when I filed up the flue cover I made it about 1mm too narrow. As a result when I later added the glazing bars and other detail the middle section was narrower than the sections either side. Doh. I decided to live with that. Tut tut.

 

The second is the walnut sheet is noticably lighter than the walnut block. I tried "American Walnut" coloured stain on a test piece, but when I tried it on the actual binnacle it looked too red. It also highlighted the grain in an undesirable way.

 

Instead I tried some Raw Umber water colour paint which seemed to give the right result. It doesn't coat like oil or enamel paint and is nearer to a stain. It should be OK once protected with varnish.

 

 

Next was the glazing bars which I made fron 0.5 x 0.5mm walnut which I cut from the sheet. Ideally these should have been of a smaller cross section but the walnut tended to disintegrate below this size.

 

The binnacle on the Amazon model has a plain back. So on mine I made a plain cover from some of the 0.5mm sheet, the edge of which is just visible on the left in the next photo.

 

 

I had intended to detail the three panels across the lower front  but decided against this. I would have used thick cartridge paper for this. The centre panel was too small and just doing the outer panels would have looked odd.

 

The structure was completed by adding the end panals and the top . The bottom of the end panels was shaped to represent the legs.

 

The next photos shows it complete. I will try to get a better photo in daylight. The binnacle is not as blotchy in real life as the photo suggests (honest!). Will try tomorrow when the weather conditions will hopefully be less grotty.

 

 

A shot of the binnacle next to my specs for scale.....

 

 

...and a final shot showing it posed next to the wheel on the ship.

 

 

I will fit some rings to the binnacle later which will be used to "secure" it to the deck.

 

[gjdale]

Wow Ian! That's just brilliant. I love the "optical illusion" approach.

[NenadM]

Uhhhh....

[JohnB40]

Ian,

 

 Wow.........Wonderful stuff indeed!

 

 

 Happy New year to you and yours

[Piet]

Ingenious!  Totally incredible Ian.

 

Cheers,

[mtaylor]

I've just been gob-smacked....  wow.... 

[ianmajor]

Grant, Nenad, John, Piet and Mark, many thanks for the encouraging words and thanks for the likes.

 

Piet, it was not my being ingenious. As ever I am simply stealing other peoples ideas. When it comes to modeling I don't believe I have a single original idea in my head.

 

Nenad, you may be interested to know that I "laid the keel" of this Unicorn in Karaburma in 1975 - a location you may be familiar with.

 

And John a Happy New Year to you and your family.

 

Well for a short time today the rain stopped, the clouds parted and we got some weak sunshine low in the sky. So I tried taking photos of the binnacle outside (when the wind stopped blowing it away ). Hopefully these will look better.

 

The binnacle by itself casting a long shadow. Dust is already collecting on the "glass".

 

 

The rear of the binnacle showing the plain panel that I fitted. Looking this closely it looks like it has been constructed from old floor boards and plywood lifted from a building site!

 

 

I took a couple more photos on the deck. The first shows the front of the binnacle quite nicely.

 

 

The second gives some interesting comparisons, the size of the binnacle against the cannon, and how rough the walnut of the binnacle is against the boxwood of the wheel.

 

 

I got the photos just in time. The sun has gone, the clouds have closed over and it looks like it is going to rain - again.

 

 

 

 

 

  

[Landlubber Mike]

Wow Ian, that came out fantastic!  I sorta followed along when you broached the perspex idea to me a few weeks ago, but now I see how brilliant your plan was.  Very very nice job - another idea for me to "borrow" 

 

Is perspex difficult to work with?  I'm intrigued as to whether there are other applications such as windows - it might be easier to start with perspex and glue the window sills, mullions, etc. to the perspex, rather than build the windows, and then glue some sort of glazing material to the window frame.  One thing I've seen in models is that the windows always seem to be slightly off as they get installed relatively to one another.  If you had a long enough piece, you could do a row of windows and make them all line up and orient precisely.  

Edited January 8, 2016 by Landlubber Mike

[ianmajor]

Mike,

 

Perspex is fairly easy to work with. I managed to keep the "glass" surface clear whilst working on it. If it gets scratched I think it needs polishing powder to bring the clarity back up. It is possible to smooth the surface by lightly playing a flame across the face but I don't think that gives a crystal clear appearance. 

 

I am thinking of having a crack at a lantern based loosely on Dan Vadas' method from his Vulture log. He made a plastic plug on which to build up the lantern then removed and discarded the plug. I am thinking of making a similar plug out of Perspex, polishing the machine marks off the faces, then building the lamp frame around it keeping the Perspex as part of the lantern. I will see how it goes.

 

The piece of Perspex I have is A4 size plenty long enough for a row of windows. It would be possible to mill grooves in to the face to set the wooden glazing bars accurately in to place.

 

The method I used on the binnacle is ideally suited to the more open "Victory" type with three panes of glass fore and aft. I cut and shaped a block for one of those but didn't persue it. Perhaps I should.      

Edited January 8, 2016 by ianmajor

[Landlubber Mike]

Thanks Ian.  I just realized that Perspex is acrylic glass   I tried cutting sheets for my Badger case, and had a rough time with it (including slicing open the palm of my hand when I went to crack it along the scored line!).  I think if I used a thinner piece of material I'd have much more luck with it.  For my Badger case, I ultimately went to an online glass shop to get custom pieces of acrylic sheets cut for me.  

 

For scratches, I think you're right that you need some kind of light abrasive to buff them out.  I used a spray for acrylic mostly to clean the glass, which picked up a ton of dust electrostatically after peeling off the protective plastic wrap.  I think it could buff very minor scratches too, but otherwise you need a special powder as you suggested.

 

The stern lanterns would be another very good application if you can shave down the plug to meet the tapered design (which I believe is either a hexagon or octagon).  At that size, it must be much easier to add the wood frame to a plug than try and build the frame and then add windows.

 

I think I shared with you that another option I'm exploring is using the glazing compound used in model railroads and other hobbies.  The nice thing is that I think you just add a little dab in the window pane area, and then it flattens and dries.  It dries a little cloudy though I think, which is a drawback relative to using something like glass or acrylic.

[ianmajor]

Mike,

 

I think it was George Bernard Shaw who said "England and America, two people divided by a common language."  

 

I have used Crystal-Clear for glazing. It produces good results in small windows. I understand that it is basically diluted PVA glue with some additives. I found it best for circular windows such as port holes.

 

My next challenge is to make the tiller housing around the fantasy central flag locker.

 

This is my starting point:

 

 

I believe I have a way forward but it is going to be awkward.

 

I want to add an open bulwark rail along the quarter deck to include swivel gun supports. I am trying to decide whether to do it before or after I rig the cannon and wheel. There is a problem. There is little strength to hold the bulwark vertical because the poor method Coral specify for the existing bulwark consists of a layer of base wood planking (with grain and joints horizontal) and two other decorative layers each with grain and joins also horizontal. The picture is looking down on the quarter deck bulwarks. The starboard bulwark is not bad but the port bulwark over the last few decades has splayed badly outwards (note the area between the two red arrows). This is exacerbated by the existing rail being weakened by the holes for the brass port rings.

 

 

I think I need to do something about it now rather than later because it will take a fair bit of grunt to straighten it up. Anybody got any views on how to secure it? I am leaning towards pushing it upright, holding it in that position, drill down the centre (say 1.5mm diameter) then gluing in reinforcing brass rods. Hum.

 

 

 

 

[NenadM]

World is small place, Ian

 

I grew up in Karaburma since I was two years old (1961) until 1979 when I move to Zemun. So. there I finish elementary school ( "Stevan Filipovic") and High School ( "Sedma beogradska gimnazija"), spend there childhood and early years of my youth, living in apartment near "Slavica" cinema and later near garage of "Gradsko saobracajno" ... At those days Karaburma had some special spirit and atmosphere ... but, last couple of years Karaburma was "attacked" by builders without any idea and sense for architecture,  and you do not really want to look it now ... if you want, take a little walk from here with street view on Google maps

 

https://www.google.rs/maps/@44.8151485,20.5058848,50m/data=!3m1!1e3

 

Again, small word

[petervisser]

Hi Ian,

 

The binnacle is a great addition to your model! Lovely work.

 

As for the bulwark, I would lean towards a wood dowel of sufficient diameter instead of the brass rod. They are easier to hide I think and easier to sand to the correct length. Just an idea...

 

Looking forward to your final solution. Good luck!

 

Peter

[Landlubber Mike]

Ian, that's a real tough dilemma.  I would lean towards inserting a brass pin and probably using something stronger like epoxy to glue everything together.  I pinned some of the model components on my Badger which seemed to help stabilize things.  Could you insert the pin on an angle and drill the corresponding hole into the bulwarks on an angle?  Will be tricky, but I'd worry about things popping loose.  A dowel could work too, but I think you still might have to angle the insertion piece if the bulwarks splay out as much as you say.  

 

In terms of the order in which to install the cannons versus the rail, that's another really tough call.  The Badger instructions had you install the cannons too early in the building my opinion - at least for modeler's like me who tend to hold the model in their laps while gluing things to the external hull     I had installed the cannons ahead of the various rails on the outside hull, and when it came time to glue on the rails, I popped off the cannons probably close to two dozen times (no exaggeration).  I think of myself as a calm, patient guy, but I came very close to turning the model into a flying vessel more than once.

 

I'm sure you've already done this, but think about what kind of access you need to install the cannons and rails.  I think I would do as much pre-drilling for both in the beginning, then install the cannons, then the rails.  For my Pegasus, I'm planning to do all external hull work, then work my way from the middle of the hull out, saving cannons for as close to the end as possible.  Taller things like the bitts I'll probably do after the cannons to give myself as much room to work to set them up.  Even though you can do a lot of the cannon assembly off model, they are still a real pain in the posterior.

[ianmajor]

Peter, Mike, thanks.

 

Yes I do tend to think in terms of brass and steel rather than wood. I have measured up. The rail width is 5mm, the width of the part below is 3mm. The smallest wooden doweling I have is 2mm (toothpicks) which would be strong enough. The problem I foresee is that drilling a 2mm hole down in to a 3mm wall will only leave 0.5mm of meat on each side. There will be a fair amount of sideways thrust on this doweling so I fear it may burst out of the wall. 1.5mm brass would give little more meat so would probably have the same issue. 1mm brass would probably not be strong enough and would bend.

 

I need to get these bulwarks corrected else when the swivel guns are fitted the supports will have a distinctly drunken air.

 

I have looked at the stern area of the Lyme, Guadaloupe and Winchelsea plans and think more drastic action may result. I will of course move my recently made binnacle, wheel and capstan to a safe place.      

 

For those of a nervous disposition - look away now!

[JohnB40]

Hi Ian,

 One side of my forecastle was like your quarter deck. I placed a clamp to the other side and steamed the area carefully,tightened the clamp a little and repeated until it matched the other side. I then drilled through the center into the lower planks and used two brass rods to secure it in right position.I hadn't yet placed the inboard bulwark planks so when added they added extra strength to keep it in position.

 

  With  yours I would use threaded rod through the round gun ports on opposite sides with suitable sized washers,ground like rounded end  rectangles to spread the load and nuts. You might have to move one or two of the gun carriages to find the best ports to use. Then gently steam the 'off' side and tighten down on the nuts a bit at a time until you draw it in to match the other side. I would then let it rest with the rods in place for a while (24 hours?). Then drill vertically into the center of the bulwark planks and into the hull ones below and pin it with 1/32" or 1/16" hard brass rod with a coating of adhesive. For extra strength especially over the brass cannon ports,I would add thin planks (0.5mm?) running the full length of the quarter deck both sides on top of the existing plank-sheer. It would make a nice base for the bottom of the open rail assembly. If you placed the brass rod in the right places you could leave them 1/8" or so proud of the thin added plank-sheer planks and use them as anchor tenons for the uprights of the railings. The swivel gun uprights will also add strength to the whole assembly...... I hope this makes sense.

 

My Unicorn has only 4 round ports on the quarter deck shown in the plans.

Edited January 9, 2016 by JohnB40

[ianmajor]

John,

 

The idea of using threaded rod through the round gun ports is excellent. Obvious really - and as is often the case things only become obvious when someone points it out!

 

I have M5 studding to hand and tried a length through pairs of ports. It clears the gun carriages (just) and with the deck furniture removed (not fixed yet) I can get studding through all five pairs of ports. I can use metal washers with plywood pads underneath to spread the load.

 

I will try this approach and if all else fails back to plan B and rebuild the bulwarks!

 

As you noted the Corel plan has 4 round ports per side, Chapman shows 5 per side and on the Lyme plans 6 per side.    

[Moonbug]

Thanks for the kind words Ian!  And that binnacle looks fabulous!

 

- Bug

[ianmajor]

Before taking the next big step I decided to seek the opinion of Landlubber Mike and JohnB40 via PM. With their permission I am adding a slightly edited version of our discussion in to the log.

 

(Me)

I am after an opinion or two.

 

I have tried out the studding through the gun ports to pull the bulwarks in to line. I only had 4 off M5 nuts so I could only set up two clamps. I have cut padding from some wood to avoid damage.

 

I was expecting a lot of creaking and groaning as the 35 year old items were pulled towards each other, even a nasty crack as something let go. In fact nothing. The bulwark pulled inwards with the slightest of effort, which to me shows the weakness in construction that the Corel design has.

 

I have added a photo of these in use:

 

 

 

Before securing it I decided to see what it would look like with an open rail. I made a rough rail up from 2mm thick card, with some 2mm thick supports. I also added 4 swivel guns temporarily skewered on top of some cut back toothpicks. The barrels are Caldercraft 1:64 half pounder swivels. They are slightly too long but I think they look OK. The 2nd swivel from the right comes out at 5ft 3 inches above the quarter deck. Not too bad I think.

 

The 2mm spacers give a scale 6 inch gap between rail and fixed bulkhead cap.

 

 

 

The temporary rail, supports and toothpicks simply lift off as a single unit.

 

I have edited the same photo to show what it would look like if I removed the existing fixed cap, reduced the height of the bulwark to the bottom of the walnut trim then added a lower replacement 2mm thick fixed cap. This would give a scale 12 inch gap. The circular port ring would protrude upwards more but this would be similar to the layout in the Lyme plans.

 

 

I am trying decide which of these is the way forward. The latter looks better but will involve a lot of surgery plus towards the stern the current fixed cap disappears behind castings.

 

What do you think?

 

I have added a comparison photo as well.

 

 

(JohnB40)

 

Howdy Ian,

 

If it were mine I would go for the bottom idea. You could go with half circular or what it degree takes on the gun ports to blend them into the plank-sheer cap and railing uprights. I could never really tell from the Lyme plans whether the ports were full or half circles. I don't know if the rail has to run parallel to the cap,I don't see why it couldn't be higher at the quarter deck end,getting lower as it goes stern . I could be imagining this but I think I have see it that way on some of the in the NMM.

 

(Me)

 

Thanks John.

 

Looking at the contemporary models some have the open rail remaining parallel to the cap, others have the quarter deck rising (to stern) more steeply than the cap, but the rail is parallel to the deck, so the rail and the cap converge.

 

If I reduce the height of the cap I can mask the step down ahead of the castings behind (or by) the rear most swivel support.

 

(LandlubberMike)

 

Hi Ian and John.  Wow, what a dilemma.  I've been pouring over the Lyme and Unicorn plans, your pictures, and our prior build log conversations on the errors of the Corel kit for the past couple of hours. 

 

On the Lyme plans, the open rail looks like it runs parallel to the cap.  In both sets of plans, the rail at the stern is above to top of the transom cap, so I think you're on the right track.  The issue as we both noted on our logs is that the upward sweep of the quarterdeck towards the stern is too steep on the Corel kit.  So, to be more true to Chapman and the Lyme plans, technically the quarterdeck should be less steep, and the port holes should therefore come down.  I think the swivel gun posts should be the same height from the quarterdeck as you move towards the stern.

 

http://modelshipworld.com/index.php/topic/6223-hms-lyme-1748-1760-by-landlubber-mike-kit-bash-of-corel-unicorn-scale-175/?p=202411

 

http://modelshipworld.com/index.php/topic/515-hms-unicorn-by-ianmajor-corel-scale-175-1748-to-1771/?p=202353

 

I tend to agree that the lower image looks better, but I think where you are running into trouble is with the quarter galleries.  The top decoration from what I can tell should end just under the cap (from Chapman and one of the Lyme plans), or possibly end right at the top of the cap (as with the other set of Lyme plans).  Since you can't change the level of the quarterdeck at this time, I was originally going to suggest maybe reducing the height of the quarter gallery windows by maybe a row of panes, which would lower the upper stool and decorations and get you closer to within the cap.  But, that will probably look a bit awkward given that those windows would then not match up with the windows at the stern.  The alternative then is to go even higher with the cap at the stern, but that would run into issues like height of the swivel guns, the upper bulwarks hitting too high on the transom, etc.

 

So this is the point where I suggest something and duck and hide.  Have you considered doing some surgery at the stern?  I wasn't sure if that was what you were intimating earlier on your log.  I don't know how much work this would take, but if you were somehow able to get the quarter galleries closer to that last gunport, the quarter galleries (as well as the transom) would drop, and the upper decoration of the gallery stools from my rough measurements would be within the cap.  This would (1) be more true to the ship plans where the aft edge of the quarter galleries should fall inside the fore end of the rudder, (2) align the stern galleries and quarter galleries, and allow you to build some nice looking upper and lower stools to fit things together nicely, and (3) perhaps move the transom forward a bit, allowing you to take out the flag lockers and have an easier time with the tiller.  The tricky part would be to figure out how those changes would work relative to the stern counter, but maybe you could make it all work with minimal impact to the counter and the hull planking (hard for me to tell from the pictures).

 

I just throw that out there because it seems like you are not particularly satisfied with the stern and flag lockers, and a while back you seemed to resign yourself to cosmetic changes to the galleries to make it work.  If you're still not happy, maybe it's worth taking a look at whether you could redo the stern?  You did magnificent work opening up the waist, so the stern might not be so bad.

 

(Me)

 

Mike, John,

 

Thanks for the input. Some good stuff here. You have given me a lot to think about. 

 

I like the idea of revamping the stern but when I surveyed the situation I decided that I would probably badly disrupt the hull planking in the process. Opening the waist was simply (!?) a matter of cutting an (almost) rectangular hole in the deck. Altering the stern at this point, desirable as it is, I fear is beyond me at this point in construction.

 

I am now favouring lowering the fixed cap and having a deeper gap between it and the rail. If I can lay my hands on a suitable piece of wood I will replace the brass port rings with wooden ones which I will stain black.

 

On the swivel height relative to the quarterdeck, yes the height should be fixed. I was wondering however about reducing the height of the swivels gradually towards the stern. The idea being to mask the step rise of the quarterdeck. Probably a non-starter though.

 

Whilst thinking this through I am working on the tiller/rudder head cover. I think I have solution. Being built in to the flag lockers it will be a flight of fancy. It will match the width of the Lyme cover but the height and length will be greater. Perhaps I could put a grill on the front to lock up mutineers!

 

(Landlubber Mike)

 

Ian,

 

I feared that surgery on the stern would be too much at this point. Lowering the cap would be a good solution.  Couple of extra points:

 

1.  On the swivel gun posts, do you even need them?  Could you just do the rail and leave it at that?  Seems like that might give a cleaner look.  If you do go with the swivel gun posts, I think gradually reducing them, even though inconsistent with the height of the quarterdeck, would be a good approach.

 

2.  That would be fun to build a mini-prison on your ship.  

 

3.  For the port holes, a year ago I emailed Corel to ask for a extras because I couldn't find them on websites like Cornwall Model Boats.  I offered to pay, and Corel sent me a set for free - an incredibly nice gesture!  So, maybe consider asking them so that you have matching port holes.  I'm sure they'd get a kick out of seeing that you are working on their kit for 40 years.

 

[ianmajor]

I started on the tiller in parallel with preparing for the work on the bulwarks.

 

The Lyme plans show the tiller clearly above the quarter deck. It measures 15ft long and is 9 inches square at the rudder head tapering to 6 inches square at the wheel end. It is mounted with its centre line parallel to the quarter deck and about 9 inches above it.

 

The cover on the plans is a plain rectangular box 2ft high, 4ft wide athwartships and 3ft long fore and aft.

 

The following is a colour coded extract from the Lyme side elevation. I have picked out the level of the quarter deck in dark blue, the tiller in red, the rudder light blue, the wheel and mizzen mast in light brown.

 

I will also be using this when replacing the rail and adding the swivel gun supports.

 

 

 

To determine where the head of the rudder would be on the Unicorn I drew the pivot line of the rudder on an old side view of the stern. This showed the line emerging just ahead of the crown on top of the gallery casting, which also was in line with the top front edge of the flag lockers.

 

 

My original intention was to lift the middle 4 planks from the top of the locker and replace them with longer ones that extended forward. The front of the tiller cover could have been built around these giving the correct height and width.

 

Problem was that the rear and of these planks are trapped between the top of the rear bulkhead and a chunk of trim. I felt I would not be able to get a neat job and also the rear support of the replacement planks would be weak.

 

So I opted to make the top of the cover using 4 planks from the original kit deck planking lined by "L" shaped pieces walnut which would sit on top of the locker. I milled up the "L" section from 2 x 2mm walnut strip. Very easy to do, here is the set up using a piece a scrap metal with a straight edge as a fence. I have also done this on the lathe using a topslide.

 

 

The resultant lid.

 

 

For the tiller I cut 60mm from 3 x 3mm beech strip which I sanded to a taper down to 2 x 2mm. The rear end was rounded to 3mm diameter for 2mm. I carved away the middle locker door and the middle 4 upright planks, revealing a small area of bulkhead 16. In to this I drilled a 3mm diameter hole 4mm above the deck on the centre line. The area around the hole I painted matt black to mask the fact that inside the cover the tiller doesn't actually go anywhere. I did a trial fitting of the tiller and the cover lid.

 

 

With the lid fixed in place the sides and a front piece were fabricated from more "L" shaped walnut and some 1mm thick walnut sheet. The cover is fixed but the tiller will remain detachable for now.

 

 

The bottom right of the above two pictures show evidence of the heavy gang having moved in.

 

A question coming up.

 

I have colour coded an extract from the NMM Lyme plan showing the deck around the tiller and added it below. Two interesting things.

 

1) All the models that I have seen recently show the tiller rope being routed (on each side) from the wheel via two blocks both attached to the bulwark to the end of the tiller.

 

The Lyme plan shows the route being from the wheel, straight down to a block on the deck, thence via a single block on the bulwark to the tiller. I will go with this arrangement.

 

2) It shows a tiller sweep on the deck (I have marked it in red). Again all the models that I have looked at recently do not have tiller sweeps on the quarter deck. 

 

There are models with tiller sweeps where the tiller is mounted immediately below a deck and the sweep is attached to the deck beams. Examples are EdT's Naiad <here>   and  Guraus' Victory <here> .

 

Lavery only shows the under deck version (as I remember).

 

It is interesting that the under deck versions of sweep give both support to the tiller and route the tiller rope (presumably to stop the risk of it hanging down and garroting a member of the crew.)

 

The Lyme version has the sweep well away from the tiller rope so could only give support to the tiller not the rope.

 

 

Does anyone have any thoughts on this? If I make a sweep it will not be fitted until after I finished messing around with the rails!

Edited January 17, 2016 by ianmajor

[Landlubber Mike]

Ian, wow, that tiller cover came out fantastic.  Brilliant way to incorporate it into the flag locker construction.  Looks perfect!

 

On the tiller sweep, I'm afraid I don't know much about these things.  I don't think the Pegasus had a sweep.  I just took a peek at Lavery - there is a diagram very similar to the last one you posted above, in the discussion on page 23 regarding the steering on smaller vessels (specifically, Lavery refers to "small 6th Rates and many sloops").  The top down view is almost identical to your diagram, and the profile picture accompanying it shows the tiller above the deck.  There is no tackle on the sweep, and probably no rollers, so I bet in that case, the sweep was intended to support tiller and not the ropes.

 

Dafi had some discussion on the tiller sweep here, but I think it was below deck as well.  Might be worth a look:  http://modelshipworld.com/index.php/topic/8770-thinking-things-throu-the-gunroom-gunner´s-room/

[ianmajor]

Mike,

 

Thanks. I have to go in to Manchester Central Library to revisit Lavery. I am happy to do that because I enjoy being surrounded by all those lovely books.

 

Dafi's is another good example of the sweep immediately below a deck. I will keep looking for an above deck version. I suspect I will add a sweep - for interest's sake if nothing else!    ​

 

I read somewhere (on NMM possibly - can't remember where exactly) of a design of tiller that was semi hinged vertically but rigid horizontally to give flexibility over the curved deck whilst giving positive horizontal control of the rudder. I think it came under a "Captain X's patent design for...." type document. If such a joint was used I guess a sweep would be needed to stop the tiller sagging and scraping on the deck.

[Landlubber Mike]

Lavery has a nice discussion of the tiller and ship's wheel history and development.  Lots of discussion on various developers and their approaches to the tiller and sweep.  If you can't make it to the library, let me know and I can see how to get you the information you need.  

[ianmajor]

Thanks Mike,

 

Actually it is a good excuse for me to go in to Manchester. Process being:

 

Go to library - consult Lavery - meet up with my old technical lead (who is still working) - get drunk - put the world to rights - go home - forget what I read - start again.