So, when I posted above about the throttle stop screw, I didn't realize how guys may be utilizing them in regards to getting more rpm when dealing with having the gov in place. My boys karts needed a little more rpm, so was messing with them today and see now how guys are using it for those reasons.
I re-bent the loop on the gov spring about .200" shorter - to result in it having more tension. Then I took the throttle stop screw out, removed the spring that was on it, and threaded a nut about 1/2 way down it, reinstalled the screw (without the spring) and added a second nut to the screw. You can use the nuts to lock the screw in place where you want it without risk of it coming out, as I'm not sure how well the weak stock spring would keep it in place if you had the screw backed out real far. A stronger spring would work better and look "legal" if you need it to.
I started the kart on the stand and SLOWLY increased throttle until the lever stopped against the screw and recorded the rpm. Did this several times, with the screw at different positions until I got the max rpm I wanted the gov to allow. I set them at 4280.
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