Originally Posted by
Wildcat1971
If it is run what you brung, I would try a 10.5 or 13.5. 17.5 might be a bit under powered.
If I stick with the class then yes, I'll probably upgrade the motor,, the 17.5 was what the guy threw in the deal to get me started
Originally Posted by
rigor
FYI with the 81 spur I don't believe you can fit a pinion any larger than a 29 tooth (can anyone confirm?). Not sure off the top of my head with the 78 spur, but I'd guess its not more than 30 tooth fitment. Running 17.5 in 4wd usually has required custom made small spur gears.
Thank for the info I was a little worried about that too, I was going to pick up a 28 to start, I'm going to pull it apart and confirm the 81 or 78 before I do anything,, I assumed it was a 81 because I thought that was the stock gear,, but I'm not 100% sure because I bought it assembled.
if the 17.5 isn't really workable,, well I know what to do.
tnx