Cheetah Single motor recomendations

[Chilli]

Dooh!!! I guess you can sand the tips of the sponsons and fill with a little epoxy to make it P Legal.

[Fluid]

If I get a Cheetah, I was thinking 4092/1300kv or maybe 1390kv on 6S for heat racing. Higher voltage= cooler running and less amp draw. Your thoughts Jay?

Either Kv should work fine on 6S. I race a Neu 1527/1Y (1250Kv) in a SprintCat40/60 on 6S and it runs great.

BTW the SprintCat is 34.5" long, not legal for P without surgery....

.

[Chilli]

Thanks. Jay.

I knew the Sprint cat was a half inch over with the shoebox mounting of the the deck. If the Cheetahs is a splash of the Sprintcat bottom, I figure it was going to be close to 34" with a clam shell deck seam.

[b20btec]

I have a cheetah, here's my setup below. I have never GPS'ed it haven't gotten around to datalog it but I can't be happier. I'm never too worried and this setup is for sport running and really reliable.

4092 1730KV
FC 240HV
5S2P
M447

[100 mph jet boat]

The Genesis is a much narrower hull than the Cheetah, though I thought the 4074 was comparable to the Neu1515.



If I get a Cheetah, I was thinking 4092/1300kv or maybe 1390kv on 6S for heat racing. Higher voltage= cooler running and less amp draw.

Your thoughts Jay?



Don, can you get me the exact length of the hull? I need to know if it's over 34 inches. I think Carl said its a tad over.
Did you already have a 4082 1600? If so, I think it would work great on 5S.

bill is right 34-1/6

yes i had 4092-1600
I was going to build a FC Daytona and made a deal for the motor and esc first. Carl told me about the hulls thats why i got the Cheetah, i wanted one that would turn nice.

[sturco]

keithbradleyboats.com Keith built my single Cheetah 5S2P, leopard 1600, 4092. Check out his site and many posts on his forum for motors.
Steve

[SirBudman32]

Yes the Genesis is a narrower hull but it is also 3 inch's longer and heaver then the Cheetah hull. The CC1515 is just a touch bigger than the 4074. All I can say is next summer I will see as I am going to run the CC1515 2200 T-180 on 4-5s batteries with a m445 and will see how it goes.

[keithbradley]

Yes the Genesis is a narrower hull but it is also 3 inch's longer and heaver then the Cheetah hull. The CC1515 is just a touch bigger than the 4074. All I can say is next summer I will see as I am going to run the CC1515 2200 T-180 on 4-5s batteries with a m445 and will see how it goes.

The Cheetah will take A LOT more power than the Genesis to get the same speeds. Jay's reccomendation of a 50mm prop and 4092/1717/1521/1527 on 6s is a pretty good one for a Cheetah.

[Basstronics]

Im a bit baffled by this thread.

Castle 1515 is 40mm x 75 lg. Close enough to 4074. It is rated at 120A 25V just like the Leopards. No wattage is given but who cares what it can take- its what hes going to give it. Amps X Volts = power (with no losses). Lets just assume that 120A @ 5s (18.5V) = 2220 watts which converts to dang near 3 HP.

Two motors, same ratings- one higher quality but its not enough?

4092 steps it up quite a bit now though...

Next. Longer hull = more surface in the water/drag. Now the Cheetah is wider, but how much more hull is actually in the water? I would think this comes out in the wash.

But what do I know. Just seems logical in an unlogical world.

[keithbradley]

Next. Longer hull = more surface in the water/drag. Now the Cheetah is wider, but how much more hull is actually in the water? I would think this comes out in the wash.

But what do I know. Just seems logical in an unlogical world.

The Cheetah is a much larger boat and required a larger prop to lift it out of the water.
First, I don't think a Genesis/Daytona has a longer splash than a Cheetah. Second, there is FAR MORE surface area on the bottom of a Cheetah. It is perfectly logical.