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HA3618 in a HYDRO

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Old 02-26-2008 | 09:39 PM
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From: Wichita Falls, TX
Default HA3618 in a HYDRO

I recently purchased a Hi-Max HA3618 rated at 4500kv. I wanted to put it in a Blu-By-U ABS 28" cat. Did I goof and get a too high of KV rating for this boat, or no? I was going to use a Baracuda 80 with two 4200mah six packs wired for 14.4 volts. Any imput would be great.
Tks,
Mike
Wichita Falls TX
Old 02-26-2008 | 10:06 PM
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From: Tottenham/Orillia, ON, CANADA
Default RE: HA3618 in a HYDRO

dont run 14.4 volts on a 4500KV motor
change it and run 7.2 volts it will be enough
Old 02-27-2008 | 02:50 AM
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From: Vilnius, EuropeVilniaus, LITHUANIA
Default RE: HA3618 in a HYDRO

True.
Have you tried to calculate the RPMs? As I got to know 50 000rpm is more than ok..
4500kv * 14.4 = 64800rpm! in water it will be about 20% less but still quite alot.
so there is a question what prop will "fit", will engine and his bearrings will do and will esc handle the currents?

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