912 ULS rough running at 2350 to 2450 rpm

Hi Gudmundur,

That's interesting, did you have an wear on the splines of the propshaft? That's what I had that gave rise to roughness at different RPM.

Alan's gearbox may have dog clutch wear, like Gudmunder however I suggest exploring the least costly/easier options before going down this track😈

Hi

No there was no wear in the spline.  I never found any debrief on the magnet. 

People could hear the clanking sound from the plane when landing, I did not hear anything sitting in the plane but engine did shake a lot að the low rpm. 

Earlier I had zinced the carb, put on carbs from other engine, balanced the prop with no result,

I have propeller from Kiev Propeller it's a heavy one. 

It's possible to test with lighter prop, then you maybe don't get the "resonance" prop/gear, easy way if shaking stop it possible the gear. 

I tried eProp, then this shake stopped but of course i fixed the gear.   

Best Reg
GA.