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Post by Deleted on Nov 14, 2009 11:40:56 GMT 1
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Post by swanrail on Nov 14, 2009 18:25:47 GMT 1
Excellant Skyfire. Some years ago I built a model of the Thames tug Plaudit from the same mag free plans. (See my section, go to My Models, and 3rd one down). My method for the frames was to make them in paper first (as you have tried) and then using a weak paste, glued them to the ply. This allows you to get the best use of the ply, and gives you a good cutting line. however, where the frames have thin edges (usually midships) then make sure that the strongest grain lies along the length and not across it!! Shall watch your build diary with interest!! (another advantage of this type of model is to use up all your scrap wood, at this time of year I used to go hunting for firework rockets (used) especially the big ones which make very good logitudinal stringers!, this way you can make a fine model for next to nothing!!! ;D ;D ;D
p.s. with the larger frames such as your photo, I used to make smaller ones inside, as the centre part normally needs to be removed for R/C, etc.
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Post by Deleted on Nov 15, 2009 0:48:59 GMT 1
Thanks for the advice swanrail. Problem out here is that fireworks are now banned in the ACT except for the big commercial displays, so no chance of hunting down rockets to get the wood for use as stringers.
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Post by Deleted on Nov 15, 2009 13:27:30 GMT 1
Swanrail is that tug the Smit Rotterdam from Billings and if so what was it like to build.
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Post by swanrail on Nov 15, 2009 23:43:38 GMT 1
Yes, the kit came with the option of being either the Smit London or the Smit Rotterdam, the only differnece being the name!! Being patriotic, I went for the London name with the Dutch flag!! Built it some years ago now, but the build was very straightforward. My model is fitted with two motors and although radio controlled have not yet sailed her, as suitable waters are in very short supply round here (except the sea of course, but a bit too rough!).
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Post by Deleted on Nov 22, 2009 9:50:12 GMT 1
Not sure what sort of drive I would use, geared or direct drive. The model is 75.6 cm long by 25.2 cm wide. it will also have a bow thruster.
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Post by markus on Nov 22, 2009 16:48:23 GMT 1
Not sure what sort of drive I would use, geared or direct drive. direct drive is always the best choice for this model you could use graupner speed500 eco 12V with low rpm and high torque... markus
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Post by Deleted on Dec 24, 2009 11:31:02 GMT 1
ok, now to see if I can find 2 x 4.5 cm 5 blade brass propellers. Think I've found some 45mm M4 Threaded 5 Blade L/H Brass Propeller Brass 5 Bladed Propeller LH 45mm Diameter M4 Thread Part No: 554045 & 45mm M4 Threaded 5 Blade R/H Brass Propeller Brass 5 Bladed Propeller RH 45mm Diameter M4 Thread Part No: 554046 www.cornwallmodelboats.co.uk/acatalog/5bladem4.html
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Post by Deleted on Dec 27, 2009 5:46:36 GMT 1
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Post by Mark on Dec 27, 2009 15:36:22 GMT 1
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Post by Deleted on Dec 29, 2009 8:23:29 GMT 1
Now if I could just work out what length of propshaft I need.
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Post by Mark on Dec 29, 2009 9:54:15 GMT 1
Not so difficult. Position the motor, take a piece of wire and poke it up the shaft hole so that it touches the end of the motor (Go for the motor casing rather than the end of the shaft). With the wire in place, snip it off at the right length on the outside.
You can remove the wire now and measure it. Subtract the length of the coupling, and that gives you the maximum length of prop tube. Select the next smaller length and that will give you a bit of breathing space between the coupling and prop tube. The shaft will be a bit longer as it has to go into the coupling. Anyway, that's how I would do it if I had a built hull and no drawings.
As you've got the drawings, just position the motor on the drawing and measure, allowing for the size of coupling.
Hope that helps
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Post by Deleted on Dec 29, 2009 10:29:55 GMT 1
Thanks, so to get the motors, couplings and props and work out the shaft length when they turn up.
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Post by Deleted on Dec 29, 2009 10:48:16 GMT 1
Parts ordered off Cornwall Model Boats, even managed to get the motors there as well.
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Post by Deleted on Jan 18, 2010 6:34:27 GMT 1
Ok 2 x motors, 1x propellor and 2 sets of couplings arrived today for the pilot boat, 1 propellor is on back order. I will get some photos once I have all the parts.
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