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Scratch building Deep Vee Mono for the first time.
Hi all!
I have been doing RC cars for several years. Last year I decided to get in to FE boats, and did this build with my brother: http://www.youtube.com/watch?v=mAMLUVEkU6o. Specs are in the video description. That one still has some issues (most of all, it's not particularly water tight), but for the most part it is working as intended. There is one problem though, where we live there is hardly ever a day without wind and choppy waters (the day in the videos was quite calm by our standards). Thus the cat skips around a lot and is hardly controllable at high speeds. So, we decided it would be a good Idea to build a deep vee, one that handles rough seas well. Also to us the building process is where most of the fun is, so why not build it from scratch? After nearly a year of planning this build we have decided to target specs:
Length: 60cm (convenient size)
Top speed: 60+km/h (Moar speed
)
Comfortable running and maneuvering at speed in 5-10cm tall wakes and strong winds (attempting this in the cat resulted in mostly flying upwind and submerging downwind)
Self righting design (it is probably going to flip quite frequently under aforementioned conditions, right?)
Suitable for running in saltwater (we live near the sea, and grew up with full scale boats)
The Idea is to build a hull out of wood (Plywood and/or Balsa? Or something completely different?), and fit it with electronics and hardware to test out the shape of the hull. Once we are pleased with the wooden hull we will use it to create a fiberglass mould, so we can make one for each of us (and anyone else that might be interested
). This will mostly be a first time experience for us, so any tips would be appreciated.
For the hull shape and weight we don't really have much knowledge, except from observing and driving/riding full scale boats of different sizes and shapes. So, how steep should the Vee be, what shape should the keel be, how steep should the bow be and how wide should the hull be? Some advice on this would be very helpful.
As for the running in saltwater part, we thought it might be a good idea to use a closed loop freshwater cooling system to keep the saltwater out of the electronics and keep maintenance to a minimum. To make this work we would have a typical RC fuel tank filled with freshwater. There would be a pump sucking the water out through the bottom, pumping it through the cooling blocks, and then through aluminium tubes running along the outside of the hull to get rid of the heat, then back in the top of the tank. Does this sound like it could work? And is it just completely unnecessary and complicated?
What kind of motor/battery/props would be a good starting point for this kind of build? Thinking of a Brushless/Lipo combo of course.
The actual build will probably start in ~a month from now and I might start a build thread for it when we do start.
Any advice would be greatly appreciated (except any advice suggesting we just get a pre made hull
)
I have been doing RC cars for several years. Last year I decided to get in to FE boats, and did this build with my brother: http://www.youtube.com/watch?v=mAMLUVEkU6o. Specs are in the video description. That one still has some issues (most of all, it's not particularly water tight), but for the most part it is working as intended. There is one problem though, where we live there is hardly ever a day without wind and choppy waters (the day in the videos was quite calm by our standards). Thus the cat skips around a lot and is hardly controllable at high speeds. So, we decided it would be a good Idea to build a deep vee, one that handles rough seas well. Also to us the building process is where most of the fun is, so why not build it from scratch? After nearly a year of planning this build we have decided to target specs:
Length: 60cm (convenient size)
Top speed: 60+km/h (Moar speed
)Comfortable running and maneuvering at speed in 5-10cm tall wakes and strong winds (attempting this in the cat resulted in mostly flying upwind and submerging downwind)
Self righting design (it is probably going to flip quite frequently under aforementioned conditions, right?)
Suitable for running in saltwater (we live near the sea, and grew up with full scale boats)
The Idea is to build a hull out of wood (Plywood and/or Balsa? Or something completely different?), and fit it with electronics and hardware to test out the shape of the hull. Once we are pleased with the wooden hull we will use it to create a fiberglass mould, so we can make one for each of us (and anyone else that might be interested
). This will mostly be a first time experience for us, so any tips would be appreciated. For the hull shape and weight we don't really have much knowledge, except from observing and driving/riding full scale boats of different sizes and shapes. So, how steep should the Vee be, what shape should the keel be, how steep should the bow be and how wide should the hull be? Some advice on this would be very helpful.
As for the running in saltwater part, we thought it might be a good idea to use a closed loop freshwater cooling system to keep the saltwater out of the electronics and keep maintenance to a minimum. To make this work we would have a typical RC fuel tank filled with freshwater. There would be a pump sucking the water out through the bottom, pumping it through the cooling blocks, and then through aluminium tubes running along the outside of the hull to get rid of the heat, then back in the top of the tank. Does this sound like it could work? And is it just completely unnecessary and complicated?
What kind of motor/battery/props would be a good starting point for this kind of build? Thinking of a Brushless/Lipo combo of course.
The actual build will probably start in ~a month from now and I might start a build thread for it when we do start.
Any advice would be greatly appreciated (except any advice suggesting we just get a pre made hull
)
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