car battery big dozer

[jimkidmotorsports]

Im building a big dozer and want the weight of a car battery and the capacity any one tryed this yet thanks in advance

[Izzy]

some guys use car battieries to run the modesl like escavators if they generally not roving around. smaller lawnmower batteries might be useful since they are a bit smaller.

an issues that will agrevate is that cars run on higher amperage than our kits - so a car battery has good amperage storage but not so good at keeping the voltage high when multiple motors attached.

therefore - you might need to run your RC electronics off of a traditional power source - motors will drop the voltage in a lawnmower battery too far and cause issues. due to this try not to use speed controls with BEC this might back feed the system .....
I like to run motor controllers - robot guys use these so they can run 24V power sytems on their 'saws of death' whil still using a low voltage RC system to control it. Check them out here
http://www.robotmarketplace.com/prod...TD-RCE220.html

The nice thing about your iidea is the added weight. many of us are adding lead and stuff to get traction whereas your idea is based around weight.

Izzy

[Espeefan]

Well if the dozer is big enough, a car sized battery would probably fit just fine. But instead of a car battery, you might want to think about running a deep cycle marine battery, like those that run trolling motors. They can be discharged a lot more. Up to 80% of their capacity, where as car batteries are not really meant for that deep of a discharge, on a continuous basis.

[jimkidmotorsports]

thanks guys sounds good the biggest problem i see whith dozers is no traction and you cant move any mass im using a rubber track from a snow blower with big lugs not real like but should have awsome bite

[doodlebug]

Anybody seen this? honda snow blower with electric drive. http://world.honda.com/news/2005/p051102.html Hope you get some idea's from this.
It otta be a real fun project! How about some picture's.
Cheer's, Neil.

[jimkidmotorsports]

those are what im using i made the drive wheels smaller diamiter for scale look i will post pics of the project