lipo help

[Mega Masher]

Hi there,
Im having trouble finding lipo batteries for my bw melty
Im using 2 of these motors:
http://www.hobbyking.com/hobbyking/s...00KV_755W.html

And will run them off 4s voltage, but dont know what capacity I would need to make it last the full 3mins

[Mega Masher]

anyone????

[mrsam]

Depends how much space you have inside the robot, Tbh i imagine this would be more than sufficient http://www.hobbyking.com/hobbyking/s...Lipo_Pack.html.

[Danjr1]

http://www.rcgroups.com/forums/showthread.php?t=703489

[Mega Masher]

thanks guys
@sam yeah, that will fit fine. i tried asking my dad about motor to battery power and what capacity i needed, but the figures came out at around 8000mAh, which doesnt sound right.

also, on a completely different topic, would it be better to build a melty chassis (which will need to take a battering!) from:

a one-piece, aluminium shape milled out for parts and the like,
a welded 2mm grade 5 frame,
a frame made from right angle steel and plates of titanium
or any other ideas, i'm open to anything!

[mrsam]

8000mah is definitely not right, most feathers only run about 3000mah. I'd say go for steel or Ti for the chassis aluminium just wouldn't be strong enough seeing as in a melty it's that bit that spins, although i'd maybe go slightly thicker than 2mm just to be on the safe side.

[Mega Masher]

cheers sam
yeah, i thought that 8000mAh wasnt right for a BW.

do you think Mario is the guy to go to for welding and stuff

[mrsam]

Mario's who i would go to for welding yes, he does get pretty busy though so best bet is to message him. Having said that i've never waited more than a week and a half for any work from him.

[Mega Masher]

ok, ill pm him then
sorry to keep asking questions (thats all i ever do really), but what size should a BW be? my guess would be at around 250mm square?

[harry hills]

200mm square or less really. Any more feels heavy and bulky.