Originally Posted by Carlos G

Hi Ryandl1

I'm the guy that worked at Walker Machine making the Walker Sachs. As for the carburetor issue I think I know what the problem is. Some of the Walker 4.2 engines used carburetors that had governors in them. Most airplane/engine combinations did not ever have any problems with this particular carburetor. Once in a great while the airframe engine combo would resonate at just the right frequency to unseat the governor which would allow more fuel into the engine and hence slow it down. The engine would run fine on the ground but , once in the air and the engine unloaded, the engine would go "rich" and no amount of needle valve adjustment would make the engine run right. The carburetor was used initially because it was the same one Sachs-Dolmar use on the 4.2 in their saws.

A 22 X 8 prop is undersize for the 4.2 engine. 24 x 10 what was normally used on a 4.2 .

I watch these threads from time to time to try and help those who have Walker engines. Some parts may still be available thru Precision Eagle (If they're still around?)as they had bought out the Walker Sachs line when we closed. The Walkers were renamed Precision Eaglets.

BCCHI, I'm sorry to hear about you closing shop. I hope you are able to recover from your medical challenge. Thank you very much for all your help when we were developing The Walker Sachs Engines.

Our Thoughts and Prayers are with you Bill,

Carlos G.