FreekS
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Boris , Piet I found most of thos photos also when I searched for pics for my K-KVIII. I think Boris is right and the mount in the drawings allows the gun to turn vertical and then sink into its bun. I cannot say if the O19 had the same 40 mm as the K-XVIII. As for the deckgun, two of them are in front of the Navy museum in Den Helder, I believe these guns are from O21 and O24, but are similar or the same as the guns on the older subs. Freek
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Hello all, Hull is closed! Last planks have been shaped and mounted and after a night drying I used the band sander to shape the planks fit with the bow and stern pieces. Lots of sanding comes next - probably first with a little electric sander then with regular sandpaper. Glass"fabric" has been ordered with low viscosity epoxy resin to seal the outside with a protective layer. Will need to read up on how this is done ! After that comes the point when the hull needs to be sawed in two for attaching the bayonet. brrrr. Regards. Freek
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Hallo all, Planking is about 75% done, now I have to think about closing the gap and how to fix the last planks in place without using the small "vices" (klemmetjes). Also in front of the boat the small plane I used to shape the planks and the Bajonet closure which just arrived from Norbert bruggen. Norbert is a legendary model sub builder in Germany and sells all sort of usefull parts. However still lots of planking and sanding to be done!
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Ian, The hull will be 68 cm long, and 11 cm in diameter. The original boat was only 20 meters long, and the model is 1:32. At 125 tons displacement, the original was small, and the model will weight approximately 4 kg and have a dive tank, most likely a plastic bag, of about 500 ml inside the model I will need to fit - a motor with speed controller - batteries and receiver - pump for the dive tank (bag) with its controller - two servo motors with pushrods controlling the planes and rudder - quite a lot of lead to give stability and make up to 4 kg. The boat will be very full! Here's another picture of the original Freek
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Hallo all, Thanks for the kind comments on my rubber motor Torpedo's! Back to planking the hull. I'm shaping each plank with a mini plane, but progress is slow. I learnt I need to ensure the plank is fully pre-bent before mounting on the hull. Six planks done and I think I have the hang of it now - though at cost of removing one after it had too much tension in bow section. Certainly gives me a lot of respect from those of you creating much more complex hull shapes! Freek
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Piet, On my K-XIV class I saw the cable cutters only on pictures after the conversion in 1943 in US, where they received a new cable cut system. however the drawing shows the cutters, and the prewar pictures show a metal strip on which I think the cutters can be installed. could it not be the cable cutters were carried by the sub, but only installed when needed on specific missions? One other point - on the KXVIII the existing models in the Navy Museum show a red underwater hull. Other modelers had painted their KXVIII grey. Being unsure, I wrote to the NIMH (Netherlands institute of Military history) they reported they though the below water ship was dark grey, not red. My model first was red - which was great to keep it in sight underwater, but has now been painted dark grey. I don't profess to know the real colors. Freek
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INTERMEZZO I still owe Piet a video of the K-XVIII shooting a torpedo from the deck tubes. Here's a mini video build log of the work I did to make the torpedoes operational - using rubber motors as the propulsion method. Hope you will enjoy the 5 minute film - the sub shot is right at the end Freek
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Thanks Anja! On my birthday I made the bow and stern from wood left over from my frigate project. Using a band sander I got the pieces nicely in shape and even prepared the muzzle of the single 18 inch torpedo tube that the O-1 had. More time went into checking the frames and correcting small deviations. I started making the planks, from 3 x 8 x 600 mm wood. These were narrowed at both ends and after a few hrs soaking were clamped in place to bend them into the required shape. I made about 5 of 30 planks so have to do a few more! Note how small O-1 is vs K-XVIII ! Freek
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Dear Piet, just on the off chance you missed it, the KXVIII anchor is clearly visible on the bottom of the dry dock. Yes KXVIII did not have a keel anchor, or had two traditional anchors in the bow. Freek
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Dear Piet, here is a picture of the anchor of the KXVIII. Looks very similar to what you found for O-19 Freek http://i40.photobucket.com/albums/e241/Freek_Schepers/c12ababe34f0ec43350357d71ff86168_zpsdee9b676.jpg
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Thanks all for your kind words! Yesterday I managed to stiffen the pressure hull by inserting wooden blocks in-between the frames. This will help the planking of the hull - without taking away from the room inside the boat. The boat seems straight and next step is for me to verify the accuracy of the frames with a plank, and to start drawing the complex bow and stern pieces - which will be the end-points for the planking. Also late last night we performed the age old ceremony of fixing an old coin in the keel. We selected a 1 Dutch cent coin (no longer in use since the euro) from my birth-year and with the image of Queen Juliana on it. This tradition hopefully assures 'een behouden vaart' - safe travels over the high sees.
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Hi John, I plan to install a bayonet closure roughly 1/3rd distance from the stern. All the technical pieces will then be mounted on a rack attached to the stern part and pulled out of the front. It will be tricky to mount the motor and propellor assembly and the pushrods used to operate the dive planes and rudder. So the whole hull will be dry and waterproof. This is a fairly well known way to assure waterproofness (though I have not used it before). The main challenge will be to find space for all the technical stuff (receiver, speed controller, motor and servo motors, batteries, pump for dive tank (waterproof bag) and electronics to control it all). But first the hull - next to the waterproof cigar I'm making now the boat has a flood able deck, a single torpedo tube and a conning "tower" with periscopes and masts. Freek
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Hello all, This is my first build log on the forum, and my third ship overall. The first was a Dutch Navy contemporary frigate Zr Ms de Zeven Provincien, and the second a world war 2 submarine, Hr Ms K-XVIII. Both are radio controlled and both hulls were made with the bread and butter method. That worked out very well for these larger vessels but now I intend to build a much smaller sub and will need to be much more economical with space. So this will be my first hull built out of wood with planks on ribs. Hr Ms O-1 was a Holland-class submarine built as a private venture by Wilton Feijenoord and sold to the Dutch Navy when it has passed some trials set as condition for her purchase. In subsequent exercises she proved very capable to defeat the then surface ships of the Dutch Navy. She patrolled the North Sea during WW1 (but thankfully the Netherlands remained neutral throughout that conflict). The Holland boats have beautiful lines, and I was hooked when I saw a working model of an Austrian Holland class at a meeting in Lichtenstein some years back. Please feel free to comment and advise as I have some experience, but little in this kind of hull building especially. Groeten, Freek
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Piet, It looks very nice! On my KXVIII I did the reverse from you, I did not create plating, but did "suggest" where the plates are through the application of over 5000 rivets. Like you, many pictures show the plating, but it's still guesswork especially as these ships were partly welded, and the riveted joints covered in paint ( through constant "tjetten"). The rivets were offered by a forum member and were bought on a sheet, easy to cut and apply, and the subsequent paint fixes them in place. Still working on my torpedoes, I'll get a video as soon as they work every time. Love your build! Freek
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Best Piet, I built the rotation torpedo tubes from Aluminium tubing. - two servos operate Bowden cables which rotated the doors open (sigh) and then rotate the mount - A spring loaded pin perpendicular to the tubes locks the torpedo in place, and when the mount rotates 90 degrees it hits a stopper which withdraws the pin and unlocks the torpedo. The torpedo itself has a rubber motor and its prop is blocked by a small pin in the rear of the tube. - the torpedo is then ejected through a small elastic band in the slot on top of the tube - the ejection process then results in unblocking the torpedo and the rubber motor starts I've gotten the rubber motor to drive the torpedo (at scale 1:50) about 2 meters, at good speed. Crude, and I'm still optimizing! Freek
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Very nicely made functional front dive planes! She really is the older brother of my KXVIII, which had fixed front dive planes! You've even pointed out a build error I made, I swivel my deck torpedo doors upwards and you wrote they actually open downwards. That's pretty impressive research you've done! With all the functional features you consider, retractable dive planes, torpedo doors that open and the 40 mm coming out of their waterproof buns, are you going to make those function electrically with a few servos? Or manually with a fingernail? Fantastic to see such a nice build of a Dutch sub happening overseas! Freek
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On the deck torpedo tubes, strange is that www.dutchsubmarines.com mentioned 4 bow and 4 rear tubes, but not decktubes. Ive seen many foto's of the open dektorpedobuizen doors, and also of O20 having deck tubes, but I wonder if O19 had them during her career. It is known that two of the K-XIV class were refitted in US and THE decktubes were removed then. dont think O19 had such à refit in US. i enjoy following the build, and ive just managed to make THE decktubes of my KXVIII model functional! Freek
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Hi Piet, glad the dinghie drawing worked out! Fred has some amazing sub models! On the deck bulkheads, have you considered shaping the ones in the middle to also be the bulkheads for the Sail? Also in front of the sail there was a pair of under deck torpedo tubes, well visible on some of the O19 pics.i If you want to have the torpedo doors open then you might consider not having bulkheads there! Fantastic build, it already has the distinctive Dutch look! Freek
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Beset Piet As another Dutchman fascinated with old subs, I am glad I found your pages! Over the last 4 years I have built (and sailed) a 1:50 model of the predecessor of your boat, the KXVIII. This boat also had a great history though more prewar. I will follow your build with interest! Freek http://www.rcgroups.com/forums/showthread.php?t=1736478&highlight=k+xviii
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