Hiya folks

Satanix's victors have always ran fine, but the cooling fans are a tad delicate for the application, I ran them at edinburgh without them and they ran fine without them. I run my 900s on 18v and a 6:1 ratio, 130mm wheels, which is a tad fast, I would recommend a higher ratio than mine (10:1 is recommended).

The victor 883s also run a 6WD robot called Pain In The Asp, and that runs 1HP Astroflight motors. not sure what ratio.