Mean Machine Catamaran (Sport)

[Steven Vaccaro]

The boat is to big. You either need a physically larger motor. Or a lower rpm xl feigao which will give you more torque.

[Craig]

I am going to go brushless. I keep getting told you cant run 21 cells on a 10xl in a 36" boat. Would that over volt the motor? Is the boat too big? Help me out please. C

[Craig]

These 3300 cells have been ok. They are not close to the quality of the IB cells. My next set will be IB cells for more speed, but they do fine on the 14XL or a 700SC for sport running. I would not use them on a 12XL to 7XL motor.

Why wouldnt you use a 12-7xl motor with this many cells? How about a 12xl with 21 ib cells? C

[ReddyWatts]

I think another cool "sport" setup for the Mean Machine would be to install two Super Vee motor/esc combos with a dual prop drive (X447'S) on one set of 14 cell NiMH batteries. It should run in the mid forties. 50's on 4s lipos???

The 2 - 6 pole motor setup should be very reliable. Use a little longer rudder than normal.

http://www.offshoreelectrics.com/pro...d=dh-blcomboaq

[Fluid]

Yes, a 5-cell IB1200 pack. Runs forever even when I forget to turn the receiver off for a few hours......:p


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[hammertime]

fluid are you using one of those mini t ib packs to run you servo??

[Tunda]

Fluid let me know when you want to sell it..............

[ReddyWatts]

I trimmed the tongue on a X640 to make a M640.

[NorthernBoater]

Does anyone stock the m640 prop.

[ReddyWatts]

Final setup on Mean Machine (Sport)

I used a M640 prop on the final setup of the Mean Machine (Sport) using IB3600 cells.
(Use the Y537/3 prop on sport cells at 50 amps.)
14XL Used 70 amps on 24 - NiMH IB3600 batts.
Raised the strut up 1/4 inch above the bottom of the boat.
Water cooled the motor and ESC.
Gained 5 mph when switched from sport to IB3600 cells, also jumped 10 amps.

[FE_Chris]

Nice man I dig it.

[yz120]

thanks guys.
your setups both look good.
mike

[ReddyWatts]

Well there you have it. Choose a Mean Machine "Sport" or "Race" setup, all from one thread. Get to it, start building!

[Fluid]

Sure, here ya go. But really, going fast is just a matter of setup and power. Power is money. The power level of this 60 mph setup is really too much for the hull except on flat water. I could never oval race it with other boats and keep it upright....the boat is just too small. But a prop with less pitch would bring the speed down and not rob much acceleration, that will be the next thing to try. I need to reduce the length of the power wires too, they are way too long.




Neu 1521/1D
MGM16024
TPX 4S2P/3300/25C
m440 prop
SpeedMaster hardware


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[ReddyWatts]

Maybe Fluid could post some pictures of his 60 mph setup for us?