Genesis first run

[Flying Scotsman]

What is that cut off voltage? If it is 3.0v or lower per cell be careful...You really should have bought a higher capacity battery and your prop is? What connectors are you using, bullet or?

Douggie

[Make-a-Wake]

Good decision to go with lipos..............be reminded that the ones you bought supply 80 amps continuous...............about what your motor is pulling, you just squeeked by.

[Trea916]

They said the boat has a cut off for lipo and I just programed it for it hopefully that will help

[Tuslow1]

Now be carefull, it's a formula for how your "c" rating and mAh gives you your max amp draw for your lipo's... You can do ALOT more damage with lipo's exploding vs. round cells. I'm not trying to run you around in a fear circle but it's always better safe then sorry..
I once said I'd never run lipo's, now I won't run anything else....

[Trea916]

Well the lipos have it
I broke down and got 2 4s 25c 3200 mah
Holy *!***!***!***!** this boat is so fast now wow and batteries are ice cold thanks guys

[Make-a-Wake]

You might as well take the plunge into lipos.......you're just reducing your speed and pleasure by downsizing your prop.......these 2s 5000's are only $19 at hobby city and they will really wake your boat up.......and run cooler. 25-30c are only a few bucks more.

http://www.hobbyking.com/hobbyking/s..._20C_Lipo_Pack

[Trea916]

thanks for all the great advice guys but will downsizing of prop really keep my batteries from overheating and if so what size do you recommend I go to for this kind of boat

[wizard122]

Just switch over to lipos Unless you are running some very high end NIMH packs your just going to cook them. They were probably meant for an RC Car anyway 30 amps max. I tried running some good Matched packs I had in my SV and they got smokin hot switched to 40C lipos and never looked back.

[befu]

I use to have the same problem melting wrapping and it was just something I dealt with until I popped a cell!! Sounded like a .22 or .25 cal gun was shot in my boat, the hatch flew about ten feet up in the air ( never to be found again ) and I had to take a swim to get my boat. Was that it? NO!! The next day my wife washed my clothes to find a hundred little holes in my t-shirt and jeans, from what I assume was dry acid that liquafied and ate my clothes as I swam threw it! Now, should you believe anything I just said???? Take your chances and see if your outcome will be the same. I suggest you do what these guys say and amp down one way or another. Going to a size or two smaller prop won't make you loose 20 mph but it might just save your setup...

Good advice and there is a lesson to be learned here. Put some foam on your hatch cover and wear old clothes! If no old clothes, swim naked, your skin grows back and you can have your wife apply salve!

double up you batteries to run parrallel or prop down some.

Brian

[Tuslow1]

I use to have the same problem melting wrapping and it was just something I dealt with until I popped a cell!! Sounded like a .22 or .25 cal gun was shot in my boat, the hatch flew about ten feet up in the air ( never to be found again ) and I had to take a swim to get my boat. Was that it? NO!! The next day my wife washed my clothes to find a hundred little holes in my t-shirt and jeans, from what I assume was dry acid that liquafied and ate my clothes as I swam threw it! Now, should you believe anything I just said???? Take your chances and see if your outcome will be the same. I suggest you do what these guys say and amp down one way or another. Going to a size or two smaller prop won't make you loose 20 mph but it might just save your setup...

[Make-a-Wake]

From what i have learned over the years, a quality nimh can only supply about 35-40 amps of juice..................your motor is trying to pull up in to 80's...............the batts cant keep up and they will always run smokin' hot.

[befu]

Do you have more room in the hull to add another set of batteries and run in parrallel?

To run that speed, it takes current. You either prop down to lower amps, drop cells to lower amps or increase current supply and add weight. Nothing magical about an esc to make it draw less current while maintaining the same speed.

Brian

[Trea916]

Didn't blow the batteries they hold 8.4 volts just fine just got to hot

[Flying Scotsman]

If you melted the plastic covering, those batteries are toast and they could vent and blow up if you use them again

Douggie

[ED66677]

so you're running 14cell! that's 34K rpm with this motor!!!
what prop do you have?