Have been trying to source a 1/4 scale hull for a jet sprint boat but not successful so decided to make my own
Borrowed a small model identical to the one I wanted and set to scaling it up by 2.5 times
I have shown the start of the journey and will continue to post development until it is in action
Have sourced 1/4 scale driver and navigator together with jet unit and electric water cooled motor which will need to produce 3 to 4 hp to drive the jet unit shaft
Hope you all like it because it's been really interesting so far
I should be in a position to pour the mould shortly and then have a fibreglass hull taken off😆
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Have been trying to source a 1/4 scale hull for a jet sprint boat but not successful so decided to make my own
Borrowed a small model identical to the one I wanted and set to scaling it up by 2.5 times
I have shown the start of the journey and will continue to post development until it is in action
Have sourced 1/4 scale driver and navigator together with jet unit and electric water cooled motor which will need to produce 3 to 4 hp to drive the jet unit shaft
Hope you all like it because it's been really interesting so far
I should be in a position to pour the mould shortly and then have a fibreglass hull taken off😆
Hi Phil
No problem I enjoy tasking opportunities to expand my knowledge. Weight distribution can be critical in marine craft and your solution should help control the lifting problem.
With the mono you should not experience the problem, but with lots of power and a very aggressive jet of water I would expect the initial 1 to 2 secs to be interesting and you will need to be on your toes to keep it straight!
Completed all the clay work. Now set in
casting plaster and waiting to see how it turns out in a few days time
Have used 50 kgs of clay and 50 kgs of casting plaster so far.
Next target is designing the top of the boat and back to clay and plaster again whilst the hull is being gell coated and fibreglassed
Will report on the casting result shortly
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Completed all the clay work. Now set in
casting plaster and waiting to see how it turns out in a few days time
Have used 50 kgs of clay and 50 kgs of casting plaster so far.
Next target is designing the top of the boat and back to clay and plaster again whilst the hull is being gell coated and fibreglassed
Will report on the casting result shortly
Wow. That is some serious work on a serious size mould. I'm looking forward to seeing the first hull come out of it. The interior mould is going to be a pain, ad unless you have some good shots of the actual craft, it's going to be hard working out what goes where. And allowing for all the mechanics to fit inside. it's coming along well Rod. Best wishes, Dave W.
Have removed plaster cast from the clay mould and very pleased with the results
Will now have some fibreglass hulls taken off by a specialist (not me ) lol
Now onto the next stage forming the top half so it's back to the clay again so here's hoping it goes as well
Will update progress again shortly
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Have removed plaster cast from the clay mould and very pleased with the results
Will now have some fibreglass hulls taken off by a specialist (not me ) lol
Now onto the next stage forming the top half so it's back to the clay again so here's hoping it goes as well
Will update progress again shortly
Looking very good Rod. I can't wait to start racing them up the river.
Think I might power mine with a DLE petrol engine though rather than an electric. No worries about batteries going flat then.
I think we should paint each of the 3 a different colour though because in close combat we may not know which craft we are actually controlling ! Like what can happen with our RC model aircraft ! lol
Just laid first fibreglass hull
Pulling it out tomorrow
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Removed first hull from mould
Had a few problems with the release but all OK now so onwards and upwards !!
Laid profile for top deck now and starting the clay shaping
Should be a bit easier than the hull and hope to have this ready for moulding shortly
I intend to cover it with silicone first to get a good impression and back it up for strength with fibreglass strengthened casting plaster
I will then lay the fibreglass in the mould and gradually build it up for the finished article
Well that's the theory at this stage lol
Will keep in touch with progress but going well and I am happy with the results so far
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Removed first hull from mould
Had a few problems with the release but all OK now so onwards and upwards !!
Laid profile for top deck now and starting the clay shaping
Should be a bit easier than the hull and hope to have this ready for moulding shortly
I intend to cover it with silicone first to get a good impression and back it up for strength with fibreglass strengthened casting plaster
I will then lay the fibreglass in the mould and gradually build it up for the finished article
Well that's the theory at this stage lol
Will keep in touch with progress but going well and I am happy with the results so far
I need one, looks well Rod. The decking the hull is sat on gives the scale away nicely.
Any chance of a pic with a 12" ruler next to it (or a cigarette packet, that's what I use😂)
Cheers
Wayne
Clay mould for deck / top area nearly completed and should be ready for applying silicone rubber shortly
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Looking really good Rod. Can't wait to see the pieces together with some nice paint and graphics and a rubbing strip fitted. ... sorry, too soon, too soon 😉 Best wishes, Dave W 😀
Hull ready for attaching to top deck
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Just taken top half out of the mould
So far so good Now to complete sanding and join the hull to the top and then commence painting
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Just fibteglassed the top and hull together and tried the rubber bumper strip out for scale
Looks like it will do the trick
Now onto a heap of sanding sanding and more sanding to get it perfect for painting
Still not sure what colour I will use but I guess something that stands out amongst the river rapids
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Just fibteglassed the top and hull together and tried the rubber bumper strip out for scale
Looks like it will do the trick
Now onto a heap of sanding sanding and more sanding to get it perfect for painting
Still not sure what colour I will use but I guess something that stands out amongst the river rapids
Thanks Wayne
I'm enjoying making this one up from scratch more satisfying I must say but fairly challenging and slower than kitsets that's for real !!
Heaps of sanding ahead of me but worth it to get a good paint finish (I hope )
It's looking really good Rod. it will be nice to see how the jet drive fits, and what sort of brushless motor you're going to fit (And obviously, what voltage you're going to choose 6s plus. I've heard of folks using 2×6s packs in series 😨) The options are unreal. Best wishes, Dave W 😊
No problem I enjoy tasking opportunities to expand my knowledge. Weight distribution can be critical in marine craft and your solution should help control the lifting problem.
With the mono you should not experience the problem, but with lots of power and a very aggressive jet of water I would expect the initial 1 to 2 secs to be interesting and you will need to be on your toes to keep it straight!