Mr.Purple (FW)

**archie2000** · 25th August 2012, 12:29

thats looks like satanix without the spikes.
speed controllers could be an issue.
botbitz should be fine.
if you have something heavy over the wheels that should push the wheels down to the floor.
there are lots of factors to consider.
wheel size
weight and weight balance.
motor positioning.
battery voltage amps and c
speed control.
version of speed 900 motors
things affecting the magnets in the motor.
motor problems.

**plargen** · 25th August 2012, 13:20

Originally Posted by typhoon_driver

Battery choice is also a big factor. If your batteries can't deliver the amps then your motors will not perform

i agree on the battery, i had some cheep 1s from china and they were rubbish i replace them with lower amp 1s , but better build quality (fatter wire etc) and it has so much more power and speed

**Eventorizon** · 25th August 2012, 16:19

We get our batteries here... http://electriflyer.co.uk/

Reasonably priced, speedy delivery and very reliable, well for us anyway :-)

**psycho_fling** · 25th August 2012, 16:23

vapextech on ebay and their own website where i buy all my packs from

**Ellis** · 25th August 2012, 16:30

Www.component-shop.co.uk for us. They're also on Ebay. They made us two 18v 2.5Ah NiMH packs for Â£60. Hard to beat the build quality. They were also patient with us and dispatched the batteries well before payment because we were having trouble.

I believe they do a few high power LiPos too.

**JammyONE** · 25th August 2012, 20:12

Well Pink's battery is a 12v NiMH 5000mAh, the Discharge Current is 35 amps so, no go since the 900's are over 50amps oops, so putting in a 5000mah 4S Lipo Battery for both robot's maybe the best option.

And changing the wiring to a more thick wire that can handle more amps. In Leeds after each round the link becomes hot. I fear it may catch on fire. And how I wire it all up is through nuts & bolts with crimp rings.

**Ellis** · 25th August 2012, 20:40

Originally Posted by JammyONE

Well Pink's battery is a 12v NiMH 5000mAh, the Discharge Current is 35 amps so, no go since the 900's are over 50amps oops, so putting in a 5000mah 4S Lipo Battery for both robot's maybe the best option.

And changing the wiring to a more thick wire that can handle more amps. In Leeds after each round the link becomes hot. I fear it may catch on fire. And how I wire it all up is through nuts & bolts with crimp rings.

This is exactly the issue then! Get a LiPo that can handle 100a cont. or more (shouldn't be particularly expensive in 4s), beef up the wiring from cables to connectors to link, and you'll have a whole new robot on your hands.

**Eventorizon** · 26th August 2012, 09:17

I have a 6 cell 30C 4000mAh Lipo (22.2v & 120A continuous) if you are interested. It was used to drive Conkers weapon motors (2 speed 900's) last year but we have upgraded to two 5 cells for more power.