I have one like the ones from minicatracing
cog for a micro hydro?
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The Cg, Cog for most hydros begins at 10% of the afterplane. That is the distance between the rear of the sponson ride surface and the prop.
If this distance is 10" then your cg goes at 1" aft of the sponson rear and tune from there.See it....find the photos.....sketch it it....build it........with wood -
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You got it man...Comment
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well as it works theres not much room to move a battery around to adjust cog...so with simons method I took a measurment from the back of the sponson to where the drivedog meets the prop and it was 10" so using 10% of that which is 1"...when I push the 3s 2350mah lipo full forward my cog is 1" of the sponson...how lucky was that....this thing should rip with the rhino 3s 2350mah 25c...man its tight in this little hull....its got a 2445 3600kv feigao and a 32mm prop
now I have to figure how to squeeze some flotation in there somewhereSPRINT CAT 40.........BOOGIMAN 25" MONO 8xl
EX President of the Offshore FE Vultures SocietyComment
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well as it works theres not much room to move a battery around to adjust cog...so with simons method I took a measurment from the back of the sponson to where the drivedog meets the prop and it was 10" so using 10% of that which is 1"...when I push the 3s 2350mah lipo full forward my cog is 1" of the sponson...how lucky was that....this thing should rip with the rhino 3s 2350mah 25c...man its tight in this little hull....its got a 2445 3600kv feigao and a 32mm prop
now I have to figure how to squeeze some flotation in there somewhereI let the dogs out...Comment
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You may also be able to use a prop that has a little more lift, not too much though as it is easy to have too much lift at higher RPMs.
Mine runs great with the recommended balance and the stock prop. How does she run on the water, or have you tried yet? I started mine really wet and started to move back. Note: be careful of the climbouts as you move back, she can easily flip on you and quick. However, it may be that my CF version is more susceptible to this, but I haven't run one of the fiberglass ones to confirm.
As you're adding flotation, don't forget the hatch!
What does your battery weigh in grams?IMPBA: 7-Time FE World Record Holder "Don't think outside the box. Rather, refuse to admit that the box exists in the first place!"
MGM Controllers - Giant Power Lipos - ML Boatworks - Wholt's Wire Drives & Struts - Nano-Oil
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Attached FilesI let the dogs out...Comment
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You may also be able to use a prop that has a little more lift, not too much though as it is easy to have too much lift at higher RPMs.
Mine runs great with the recommended balance and the stock prop. How does she run on the water, or have you tried yet? I started mine really wet and started to move back. Note: be careful of the climbouts as you move back, she can easily flip on you and quick. However, it may be that my CF version is more susceptible to this, but I haven't run one of the fiberglass ones to confirm.
As you're adding flotation, don't forget the hatch!
What does your battery weigh in grams?I let the dogs out...Comment
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You may also be able to use a prop that has a little more lift, not too much though as it is easy to have too much lift at higher RPMs.
Mine runs great with the recommended balance and the stock prop. How does she run on the water, or have you tried yet? I started mine really wet and started to move back. Note: be careful of the climbouts as you move back, she can easily flip on you and quick. However, it may be that my CF version is more susceptible to this, but I haven't run one of the fiberglass ones to confirm.
As you're adding flotation, don't forget the hatch!
What does your battery weigh in grams?
198grams
SPRINT CAT 40.........BOOGIMAN 25" MONO 8xl
EX President of the Offshore FE Vultures SocietyComment
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SPRINT CAT 40.........BOOGIMAN 25" MONO 8xl
EX President of the Offshore FE Vultures SocietyComment
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