need a speed controller

[Laser]

scorpion xxl, a bit more at £120

[maddox10]

A 4WD drive machine draws more amps than a 2WD.

It all depends if you use a motor per wheel or just 1 motor a side.

Option 1. Each motor a speedo. Electronise or heavy duty RC speedo.
Option 2. Hefty dual channel speed like the Scorpion XXL or the rare expensive Sidewinder can be used for 2 motors per channel (side) Other option is a Victor per side.

[gizmo]

wher would be the best place to buy a scorpion xxl?

[Anttazz]

Robotpower is cheapest I think:

http://www.robotpower.com/catalog/

[gizmo]

thank you for the quick responce

[Laser]

you can get them from robot shop
http://www.robotshop.com/eu/productinfo ... lang=en-US

[gizmo]

what modes do people find work best with the scorpion XXL?

[Bodge Job]

Sorry to re open the thread, but has any one used these speed controlers before? I thought I heard someone did (or something similar) but does the low amp reverse afect the driving hugely? And do u think it could cope with two drill motor per ESC? I think forward would, but would reverse? http://www.ebay.co.uk/itm/270826285477?redirect=mobile (sorry if it's the mobile site, I've tryed to chnge it)

[Anttazz]

Yup I use them in Eric Jr, well, I did up until today when I replaced them with an XL.

Didn't have any issues with different speeds reversing and in forward drive, didn't notice anything at all. I just swapped them out as they're only rated to 12v (although I used them on 14.4 with no issue) and wanted to be able to run something at 19.2v and keep both my feathers using the same battery sets.

[Bodge Job]

Oh ok thanks, I just thought they would be better than the servo, micro switch method, for the old bruiser, it doesn't have to be anything spectacular, and I have a similar one, which I could take to the champs, incase one desides to blow...