How to choose the correct p/s servo

[Dbotelho]

Purchasing parts for my Desert Rat sand car build. What are most sand cars using for a P/S servo I would like to use a large servo but I see there are several different torsion options to choose from?? Does anybody have an info on this subject?

 

[Kevin]

the 0.185 XX-Light Steering is whats on my brothers desert dynamics dual sport car. think i have the same one on my dd car as well.

 

[Dbotelho]

the 0.185 XX-Light Steering is whats on my brothers desert dynamics dual sport car. think i have the same one on my dd car as well.

What size front tires are you guys using?

 

[Kevin]

What size front tires are you guys using?

on my brother car it has the 10.75-15 razor blaster, and my car has the 12.50-17 razor masters

 

[Dbotelho]

on my brother car it has the 10.75-15 razor blaster, and my car has the 12.50-17 razor masters

Would you say you’re car steering is light , med or heavy I am planning on 12.50-17 tires

 

[Kevin]

id say it felt meduim. my car also had a lot of weight on the front wheels as its a mid engine. my pump i think was also not enough since ast low rpms steering was hard, but around 6k it was light. dont think my crank ps pump pulley ratio was right.