brushless 1/5 4wd conversion about to begin! couple questions.

[KaztheMinotaur]

True but there is carbon in any patroleum product.

[Ryu James]

so i had some time tonight and was able to make a little progress. the stock rampage rx box was perfect size to fit both my reciever and hydra esc. i mounted a 40mm fan on each side of the box blowing on the aluminum pipes of the esc. i think this will cool it sufficiently. the large hole where the motor leads exit should provide escape for warm air as the fans cool the esc. if it doesnt work, back to the drawing board. the esc is mounted securely inside and i could even waterproof the box with a little more work. also put 8mm bullets on esc wires.

next i am going to build a large top plate that combines the front and center top plates into one plate. this will help reduce chassis flex and will be the mounting place for this rx box. the brake and steering servo wires will just run in through one of the holes in the box. i like this configuration as it will look nice and clean when all is said and done.

just a question - why does the hydra esc not have a power switch? it only has the connector for the rx but that is it. there is no switch at all. is it supposed to be like this?

[florianz]

I really like that design! cool idea.
a center top plate will help a lot, my first one was made of carbon, but too thin and broke after a crash. I have now installed a kind of "bar" made of epoxy/gfk (as seen in my thread), that allows a little torsion but still stabilizes the car.

I've tried different positions for the esc in my buggy, try to find a place as low and front as possible, as it weights quite a bit. I've placed mine on the steering servo, w. is the best place I think.

can't wait to see your truck rollin!

[KaztheMinotaur]

It doesn't have a switch...it just turns on with the RX gets it's power. What are you doing to RX power?

I did a little work yesterday also. I'm going to run a 3S LiPo into a 3 way parallel split: BEC, fans, and lights.

I've also been tinkering around with a computer power supply. They can easily be converted to provide 3 / 5 / 12 volts to power a battery charger. You can even series 2 different ones together for any combination of the above.

[transtalon]

I think that fan is a great idea but it would not be enough to cool down the aluminum plates as when the esc heats up, it heats up real fast. It really needs a watercooling to have the 240 amp rating capability or you'll ending up with a burnt esc or a bad fire.