Ian_Grant

You can contact designers via Yeggi/Thingiverse. I noticed that the steam pinnace design, which prints with a perfect hull, was by one designer whereas the other boats were by a second designer. I had not noticed in my excited downloading. The second designer's intro notes that he is a "beginner" and warns not to expect perfect designs. Indeed, the images on Thingiverse show the same hull scalloping as I see in Bambu Studio. Far be it from me to chide him about this; he has done a great job on the interior and has far more 3D skill than I. So it's back to sprucing them up by myself, somehow. Thank you for the suggestion, Kevin! And indeed for this trip down 3D-file-world!

@Kevin-the-lubber, here is an update. Bambu Studio does indeed have a simplify function, but it appears to default to "Very High" detail level which is what the screen shot above depicts, believe it or not. When I lower the detail level not only does the hull exterior get even worse, but the interior details (floor gratings etc) start to disintegrate too. Here's a screen capture of "Low" detail level. Now that's an ugly hull!!

Yes, that's how it looks as downloaded then imported into Studio, before slicing. You raise an interesting point, though. I will look into it. Thanks Kevin!

@Kevin-the-lubber, the boat interiors look great but the external hulls are not properly faired; it's not the printer it's the 3D design with too few polygons. Oh well, it's for free! These designs are intended for war gaming apparently. I used a fine 0.2mm nozzle and selected 0.08mm layers; knowing these values the Bambu Slicer selects the Bambu-Designer-Approved recipe for all the other factors and prints a nice result. The boats buried in the aft well deck work as is, but the more visible (in terms of hull exterior) boats stacked at the forward boat cranes will need to be sanded, or filled and sanded, or plain rejected if I can find something else.......I did find files for Titanic's lifeboats but they're not really apt for most of Lion's boats. For example, here's a slicer image from the 36ft pinnace hull. Hmmm, I wonder if unbeknownst to me the slicer has a function which could smooth those out? Will have to do some googling. 😏 Or learn some Blender.

Went to the club pond sail last night. I had verified that the 1060 ESC's do in fact give me full power in reverse; I did what I should have done in the first place and put a voltmeter across a motor to find that it varied from +12V to -12V at the extremes. At the pond, I had much better response in reverse than on the maiden voyage. Either I did something wrong then (can't imagine what since the ESC units automatically calibrate on power-up), or removing 2kg of ballast to get to the proper waterline made all the difference. I've added the topmasts and the three boat cranes are started. Here are some pics. Interior gear. I have plenty of room to add stuff. Seems funny having only one servo, for the rudder, but kudos to modern tech. From right to left- motors with 5:1 planetary reduction and U-joint couplers; ESC speed controls one per motor (they're so tiny compared to the rheostats I used in the 70's!); lead gel battery; rudder servo and receiver. Wood fore topmast and brass signal yards. Sorry for focus.... Main topmast with first bit of rigging! Telescoped brass tubes for mast, brass tube yard, 3D-printed "star". Focus! I need to get a steady rest apparently. An idea of what ship's boats will be in the aft well deck. I found some free 3D files of various RN boats and can scale each print in the slicer program. The two stacked boats are the same design printed at different scales. The bottom-most boat is a whaler design, not really suitable for the "admiral's barge" now that I see it in person. I did find an admiral's barge but the file costs and really needs to be printed in resin. Note the crane boom. Crane for boats at fwd superstructure, in progress. That's it for now. Holidays coming up so it might be a while with no posts. Thanks for following.

That's odd; in my experience the "quality control men" much prefer to lie ON your papers rather than beside them.....

Siggi, do we know that the reef point was known to vikings? Maybe from tapestries or vases?

Yes it would have been. Probably would have required removing hull skin......😠

I addressed the problem alluded to earlier by removing some a lot of the fixed ballast at bow and stern. This ballast was in the form of lead shot onto which, fortunately, I did not pour epoxy resin but rather inserted a layer of wood over it to keep it stable. The bow was easy; there's a large bulkhead sitting right there. Just drilled a hole each side of centre part way down and presto the shot fell out as I tilted the hull back. The stern was another story. I had to remove the motors and ESC units in order to get the drill body into the hull interior, and drill through a bulkhead recessed behind the aft turret which I could not really see. All without having the bit emerge through the hull bottom or side. You would have needed a crowbar to pry apart my buttocks at the moment I pressed the drill trigger. Again it went well and the shot poured out fine. In float testing originally the waterline of the hull (incl battery, motors, ESCs, etc) was about at the middle of the black bootstripe (which is where I want it) without the removable upper works. Adding the upper works settled w/l to the top of the bootstripe, which I didn't like. I had assumed in original float tests in the shop last winter that the upper works would have negligible weight, however it currently weighs 1.16kg. This is what decided me to remove some previously fixed ballast. I have poured out 2.09kg of ballast. The hull with upper works now sits with w/l at the bottom of the bootstripe. Adding three of my original metal pieces (total 0.6kg) gives a nice waterline. These metal bits will be placed in the accessible areas, giving me leeway to adjust ballast when I add a sound system, possibly smoke generation, etc. So that's a big relief for me. Thanks for your comments and likes! Ian

You're right; cars use "Fwd/Brake/Rev" whereas ships want "Fwd/Rev". The 1060 ESC uses a jumper to program this while the 1080 has an internal programmable register.

Nice clew blocks!!

Bill, you're really getting into electronic logic ....."diode OR'ing".....nice!

This is a pretty large kit. Billings seem to take pride in their short-on-detail instructions. Looking good so far, look forward to more!

John, might be worth a quick message to @Kusawa2000 to ask our man-on-the-spot in Parks Canada's Whitehorse office building! 😏 She's looking very good! Cheers, Ian

Thanks Javelin: Interesting info on real ships. I always assumed a prop would push the same amount of water spinning in either direction. I had a couple of frights on the water because her turning radius is quite large too. I could at first try 75% "reverse power" with 1080's if I decide to buy them.