how many wheels do I need for racing?

[MountainMax]

Hey Guys, im building an (almost) all aluminum race suspension for my race sled (30ibs so far), should I put any idler wheels on it? if so where? i now only have three rear 7.5" wheels and that's it. I will be racing on Packed snow by a trail groomer for 660 feet, NO ICE! Wondered if i should leave them all off or put lots on there? any ideas???????

 

[yamaholic22]

if you are going to be running slides then leave them off. If no slides, a lot of small ones to keep the track off of the rails.

 

[MountainMax]

I have the very expensive Race Teflon grey ones, guess they should be enough.....