UH/HC motor that will spin a 5.5" prop on 4S? - RC Groups
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Feb 13, 2008, 11:01 PM
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UH/HC motor that will spin a 5.5" prop on 4S?

I'm looking to build something (sorta)fast and (fairly)cheap. I want to use 4S because I've got the 4S batterys already. To keep the amps semi-reasonable(30ish), I want to limit it to a 5.5x4.5 or 5x5 ACP prop. I'd like to stick with an outrunner. Almost all the motors I've seen that are 4S rated are either really low KV, physically way to big, or very expensive. Does United Hobbies/Hobby City have a motor that will fit the bill? Thanks.
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Feb 14, 2008, 04:05 AM
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Bruce Abbott's Avatar
30A on 4S is a bit over 400W and 23000rpm on a 5.5x4.5 prop. Kv will need to be around 2000.

I listed all the outrunners at HC and could not see any that approach those specs. The closest I found was the A36-56-2000kv which is a hybrid (outrunner in a can).

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