Badland Part 103 Pilots and Builders Forum

Given there was virtually nothing left of my motor I started by pushing the Easy Button and went with a 420 Predator from Harbor Freight as the base. I went with the 420 because the aftermarket product/support and knowledge base with the Predator is huge. It is pretty much the go-to for a lot of go ...

My 460 had issues right from the beginning. The rocker shaft had no thread lock on it and came loose in the air. I got down safely. Timing was off resulting in huge kickback and difficulty starting. Retarding a few degrees helped the matter. Excessive crank case pressure filled the 12+ oz catch can ...

They are now using an ek27 on the 303 and an ek26 on the 250.

I put a SC 28 on my Polini 250 a couple of years ago and to my knowledge was the first to do so. Out of the box it was horrible and I figured I wasted a lot of money. It ran lean at the bottom end/fat on top, rpm fluctuated and throttle response was poor and no matter what metering rod was in there ...