"FrankenBoat" Build
06-13-2011, 07:04 PM
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"FrankenBoat" Build
About 2 years ago I bought an NQD High Wind Speed boat. This boat had two 380 sized Brushed motors running so that on would cut out to steer. This boat was OK but I wanted to go faster. My cousin had his old stock brushless set-up from his RTR SC10 and we put it in. It is a Reedy 3300kv brushless motor. the truck ran a 2s 24c Lipo. I wanted to know what is the largest battery I can run without harming the ESC and Motor.
06-14-2011, 06:56 AM
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RE:
Physical Size of battery is typically related to only capacity and C rating. These factors should not harm an ESC or Motor if you are planning to use larger values than before. Choose the highest C rating you can budget and select a capacity around 5000mAh. The only reason to select a smaller capacity battery is for physical size or weight restrictions.
A more valueable question would be which prop to use. Wrong gearing on you RC Car can certainly toast your system. Wrong prop on your boat can certainly do the same.
Ryan
A more valueable question would be which prop to use. Wrong gearing on you RC Car can certainly toast your system. Wrong prop on your boat can certainly do the same.
Ryan
06-14-2011, 08:29 AM
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RE: RE:
Tested it out today and to my surprise it wasn't spectacular. Running a 2s 24c 4100mah lipo, the motor sounded like it wasn't reaching top RPM. Would a battery w/ a higher C rating fix this?
06-14-2011, 10:23 AM
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RE: RE:
It is more likely that your prop has too much pitch. (tires are way to big) Your kv is only good up to 24,420 RPM, you want to be closer to 30,000 RPM.
3s would be the most you would want to run, that takes it up to 36,630 RPM and will give you a huge boost in performance. You need a proper prop though!!!
A proper setup boat will also run much faster then poorly set up one. Your first step is to make sure you are running the right prop.
06-14-2011, 03:28 PM
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RE: RE:
I have no idea what pitch the prop it is. The prop came with the boat but the fact that the 380 brushed motors were able to run the prop is beyond me.
Is there any way to measure the pitch?
Is there any way to measure the pitch?
06-14-2011, 07:46 PM
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RE:
That sounds about right. You could move up in prop size if temps are good. May be able to use a 40mm prop.
Keep in mind car motors don't usually work for boats. In your case RPM is a bit slow. Typical car setups have too much RPM.
Ryan
Keep in mind car motors don't usually work for boats. In your case RPM is a bit slow. Typical car setups have too much RPM.
Ryan
