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40mm water jetunit

40mm water jetunit

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Old 04-04-2014, 06:58 PM
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Default 40mm water jetunit

Hi everyone im new to this forum so im just gonna fire away. I have a 40on water jetunit that i want to make an alloy hull for. My first Question is what Length hull would be Recommend for that size jetunit and secondly what kv brushless motor should i use. Its a triple fin impeller with five stator fins. My first thought was 1500ish kv brushless Running three or four cell Lipo. But if Someone could tell me the optimum rpm for a 40mm unit i could work out my motor Choice From there. I have already built a smaller model 16inches in length with a 20mm Jetunit and a 4800kv brushless on Two cell. which goes awesomely. Its Spellw much an nqd but in an allow hull. Now i want to Kick off the bigger faster 40mm jetboat built any help would be Appreciated!
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Old 04-05-2014, 09:08 PM
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As someone who really doesn't know squat about brushless motors and jet drives, my guess by the impeller diameter alone would be a hull 26-30" long.
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Old 04-06-2014, 02:12 AM
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Thanks i was thinking it would need to be about that Long. Im fairly new to brushless too i notice a few people With jet units run nitro motors but i want to Try electric, cheers
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Old 05-04-2014, 06:15 PM
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There are a few good options out there, hulls are hard to find but jet boats are good fun!
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