Originally Posted by
1967brutus
So what I would suggest, IF "closing the LS needle to force the curve up" does not fix the issue, is to open the LS needle a few turns (it should not fall out but also be not active anymore) and close the HS needle to where the solenoid just comes in (appr 70~80 on a -100 to +100 scale) in order to create as much "range" as possible, and run the entire mixture on the solenoid.
I have a few engines where this seems to work pretty well. Idle mixture most definitely is less refined, but it cures the midrange issue most effective. And since I only idle my engines on the ground, I do not care too much for that.
I think that stuff like "the engine has to idle low enough to not roll on pavement" highly overrated. It has to idle low enough for a reliable approach and landing. That is all I need.
What you describe here is the "TBI carb" functioning Bert and im familiar with that - it seem that with 3 "control points" we can set up some unique and interfering adjustments that make setting more difficult.
Some great content and suggestions here lately. I have to refine my curve setting technique as I see there are variable methods that all have validity. OR I default to what I know and eliminate the LSN.
Lonnie... Have always admired those who have a patent or patents to their name - It means you are able to innovate and push progress in a special way... Im too much of a procrastinator and missed on one I should have pursued ... also not on engines and probably worth less than nothing but I still regret not doing it.. I think there are many "Patent capable" minds in our little group here... you carried through...
