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Post by simplyloco on Apr 19, 2019 7:51:28 GMT
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Midland
Elder Statesman
Posts: 1,870
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Post by Midland on Apr 19, 2019 19:24:48 GMT
What a lot of enthusiasts for a model boat! When we get to Doncaster you will see boat clubs, keen, enthusiastic, creative and communicative. A joy!
D
PS They even have a pond in the hall for demonstrations including submarines!
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Post by simplyloco on Apr 19, 2019 19:48:16 GMT
I installed the electronic speed controllers today, complete with three separate 20A fuses and the correct size wires, all nicely mounted on a Tufnol plank. These little treasures with their matched motors are £80 a pop, so I followed the simple wiring diagram carefully, and connected one of the 3.4aH batteries. Imagine my surprise when the workshop instantly filled with acrid grey smoke! I checked the layout, and it was OK, so I tried again. More smoke! I really thought that I had fried the lot, but none of the fuses had blown, which gave me a clue.... On disassembly I found a discoloured track along the tufnol plank between the + and - bolted connections. On closer examination, it wasn't tufnol at all: it was an aluminium reinforced sail batten that I'd discarded many years ago, but had found its way into my plastics drawer! I connected up again avoiding the plank and all was sweetness and light. Phew! Moral: identify your stock, especially when they (and you) get old...  20190419_125329 by inkaboat, on Flickr  20190419_191249 by inkaboat, on Flickr  20190419_192258 by inkaboat, on Flickr |
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JonL
Elder Statesman
WWSME (Wiltshire)
Posts: 2,907
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Post by JonL on Apr 21, 2019 14:26:02 GMT
A good spot, I'm not sure I'd have worked it out!
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Post by simplyloco on Apr 25, 2019 13:43:57 GMT
I've finished the drive train, but the bronze prop bearings have virtually worn out during testing! I've bought some miniature shouldered bearings from far away, and made some housings, and the difference in NVH is quite noticeable. I should mention that this is a gash hull bought for ten quid at a car boot sale, and won't do the model justice, so I'll get everything working, and then build the double planked boat hull proper, after which the kit can be transferred. I put the thing in the bath and fired it up. Such was the wash created that if I'd had my camera close in on its tripod it would have been swamped! It's gonna fly... I've made a little video of testing the motors, but not when in the bath! youtu.be/MwN6N2mTKIs DSC00786 by inkaboat, on Flickr  DSC00782 by inkaboat, on Flickr  DSC00781 by inkaboat, on Flickr |
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Post by simplyloco on May 26, 2019 17:04:50 GMT
I played with my new Fusion 360 package today for the first time. I was surprised at how easy it is, I might have gained just a little mastery of it! First go at the saloon body. The portholes are not in line but it's a start and the next attempt will be OK! Mind you, I haven't found out yet how to taper a shell... Who's a Happy Bunny then?  John  20190526_174934[1] by inkaboat, on Flickr |
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Midland
Elder Statesman
Posts: 1,870
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Post by Midland on May 28, 2019 8:24:03 GMT
And I am making a list too!!
D
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Post by 92220 on May 28, 2019 9:26:30 GMT
That looks good!! I used to make radio controlled model boats before getting into railways. I built a radio controlled, 4' long, scale model of a Vosper RAF rescue & target towing launch, which was timed at 25 mph over the triangular Naviga RC competition course.   When I was an apprentice I worked for a company that made straight line windscreen wipers for ships, and Vospers of Havant, used to fit our equipment to their ships/boats, for the Royal Navy. Because I was into boats in those days, I wanted to build a scale model of Brave Borderer, the first gas turbine naval torpedo boat ever built. Because I used to work on defence equipment, I had a low level security clearance and I asked if I could buy copies of relevant drawings to build a model. I have original Vosper drawings for the hull sections/lines, the G.A., the transom flap assembly and the transom shelf. -- Enough to make a very detailed model. I started building the hull but never finished it as I suddenly realised I had collected enough tools and equipment, to enable me to build the loco I had always wanted to build. I also have a letter from Vospers, giving the colour scheme for the boat. No model of Brave Borderer, that I have seen, has ever been painted correctly!! It was interesting that during the Round Britain Power Boat Race, in the early 1960s to early 1970s Brave Borderer was used as a safety boat because it was the only boat in the world that could keep up with the leaders, and carry full emergency kit. Officially she had a top speed of 50 knots, but unofficially she was timed at 80 knots!! A naval warship doing 80 knots in the 1960s! Even today that is pushing the boundaries!! If anyone is interested in building a detailed scale model, I could be persuaded to part with the drawings. Bob. |
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Post by simplyloco on May 28, 2019 12:08:37 GMT
That looks good!! I used to make radio controlled model boats before getting into railways. I built a radio controlled, 4' long, scale model of a Vosper RAF rescue & target towing launch, which was timed at 25 mph over the triangular Naviga RC competition course. SNIP If anyone is interested in building a detailed scale model, I could be persuaded to part with the drawings. Bob. I was part of an Army crew sailing the 35' yawl 'Petard' around Britain at that time. I watched BB start a race leg, belch clouds of smoke and flame, and beat them all to the next buoy! This PT boat was a toss up between the two: I have lots of photographs. I still have the hull mould which could work just fine for BB. Come to think of it, I could make two decks for this hull, one of each! My powers of persuasion know no boundaries... John |
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Post by 92220 on May 28, 2019 13:43:05 GMT
Hi John.
You are right in thinking the hulls are similar shape but the bottom edge of the transom on BB is straight across but I think PT-61 still has a bit of a vee there, doesn't it. I may be wrong though. The main difference is at the front. The deck on BB is flat and straight whereas the PT curves downwards to the stem. The stem on the PT is short and straight after the upwards curve of the bow, and BB curves, and points more forward, in a much more aggressive-looking way. It wouldn't be too difficult to modify a PT hull though, to suit BB.
Bob.
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Post by simplyloco on May 28, 2019 16:23:20 GMT
I've been practising... It's not the final version, but it looks fabulous to me, and there is even a joggled sweep at the back to help assembly, a la Roger!  The side windows need to be lower so I can get a larger fillet radius on the roof. I haven't been able to create the vee front with windows on the same plane, so it is staying flat for the moment, Any Fusion owners out there can help? I'm really looking forward to getting the Prusa gadget on Friday! John  Wheelhouse v5 by inkaboat, on Flickr  Wheelhouse v52 by inkaboat, on Flickr  Wheelhouse v51 by inkaboat, on Flickr |
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Post by Deleted on May 28, 2019 17:25:36 GMT
looks fabulous to me too John, I can't recall the exact shape but it's looking good and so soon after learning the art... well done sir... Pete |
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Post by simplyloco on May 29, 2019 12:55:48 GMT
He's got his nose on now. Just a little more practice needed... John  saloonv3 v8 by inkaboat, on Flickr |
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John
The side windows need to be lower so I can get a larger fillet radius on the roof. I haven't been able to create the vee front with windows on the same plane, so it is staying flat for the moment, Any Fusion owners out there can help?