Another major issue I’ve been fighting with on this early model Yerf Dog(3002) is the faulty suspension design.
At first I was excited and it was a bonus buy bc of it, but when I actually saw how it performed it was obviously inferior for what we plan to use it for.
Caster is something I can do without since the arms are actually mounted at an aggressive angle, it works. However, camber and toe are not as forgiving. I got to looking through designs and see they obviously figured it out as they went, as the spider box models seem to have alleviated some basic design principle issues.
So without getting too deep here, I’m taking a bit of a few diff designs and using it with mine, to keep the simplicity of the classic Yerf Dog style but update its functionality for our use. Basically the spindle bracket has to go, we’ll add bungs and heim joints perpendicular and level to the wheel axis and maybe add a spring there as well.
I’ve stripped an old arm for mock up purposes and testing the designs as I go. Not what I had planned to do originally with this kart, but I think the more aggressive look and better function will suit us well going forward.
Still waiting on a few parts of the puzzle to show up so I can wrap up these modifications and pick back up on wiring.
At least put down time hasn’t been completely unproductive. Our stage 1 upgrade on the 440cc is done, and it sounds insane. Blue flames, backfires, and throaty exhaust.. it’s a good start but we still need to get that governor out after the break in. More pics soon.