I have just installed the ProTrac on my Slash. Its a good thing I got 25% off on it, after tires new bearings shock shafts and a bunch of other stuff, I'm into this upgrade at about $125. Anyways, I have read up and looked at a bunck of videos on the ProTrac kit, and it looks like the Losi XXX green and blue shocks work about the best with the kit. The only problem, none of the hobby shops carry them, I have ordered them, but it will take another week for them to come in.
So, I am experimenting with springs, I have a big'ol bag of them, but have no idea what rate they are. If I understand spring rates properly, it is the amount of force required to compress a spring 1", correct? This seems too simple, too easy, intuitively I thinking I can take a small ruler, push the spring down on the scale 1" and what ever the scale says, that is the rate for that spring; is that it, or is there something more that I have to do?
It might just me be, but this seemed like it was a tricky build, at least the front part was, the back fell together quite nicely. I was a little annoyed when I noticed that there were no instructions in the package, but a quick trip to Proline's website and I found the detailed build video. Anyone else find that they had to watch the video a couple of times to get the front end put together right?
Now that it is back together, I have noticed a lot less body roll, and the truck does seem to track a lot better. This is with 45wt oil all around and stock tires, the glue is curing on the new rubber... Something else I have noticed is the front-to-back weight is different, the CG seems to have moved back and at full throttle the front wheels barely contact the ground (I can turn the front wheels full let and right a just barely change the path of the truck).
What are some setup tips the ProTrac? (I am still using the Ultrashocks)
I think my next upgrade will be a LCG chassis from Anza or Proline...