Using gold motors

[geeza]

For the 24V golds I agree with Geoff, I run about a 10:1 reduction with 4WD and they do get warm but not hot after a 5min battle.

[s8nsmum]

P.I.M.P.anought uses 24V golds at 25.2V with an 8.8:1 reduction on 4X50mm wide 120mm diameter wheels. The motors still get nice and hot and so do the batteries. It has quite a lot of shove but not too much speed.

Joe Townsend

and it works quite well on 3 wheels aswell

jonno

[geoff]

Daniel, Just a thought on M.M.s drive set up, you use 2 4QD boards dont you? Just done the maths on your current and motor efficiency ratings and 480W+/- @ 24V is 20A+/-. To keep your battries a little happier, try winding the curent limit down to say 22-25A on each board. you shouldnt see any downturn in preformance but your battries will love you forever!!

LOL!
Batteries can atually love us?

Mr Stu

[geoff]

Stu, that was a figure of speech!..Mind you, what you do with your batteries are your business!!

Geoff, we use 2x 4QD NCC-70s de-rated to 50A. The batteries do get hot at this setting but they will hold out for 5 minutes (just) without too many problems.

I thought we were being nice to our batteries these days cos back in the good old days we used to run the original Micro Mute at a full 70 amps per board with the same motors. Now that was something to see

All I can say is dont try this with NiMh packs or small SLAs (or anything with a low current output) because they will go up in smoke.... orange smoke as I remember....

Orange Smoke - arrr the good old days yes.
I wanna see blue smoke

Geoff - now now, dont get ideas.
(Said keep it quite, you lied :sad

Mr Stu

[fwsorg]

Sheet of 10mm ali. Bore some accurate holes for the bearings and motor mount and hey presto.