In all my wisdom I decided to tinker with the midrange on this motor and I got carried away. I have lost the sweet spot and I was wondering how may turns from closed would be a good starting point for the midrange screw. Next time I will start by checking how many turns from closed. Any help would be appreciated.
Don

Don, there are back up checks which are better. While the engine is running, disconnect or pinch of with pliers-- the fuel line from the nipple on that carb. Listen to the rpms. If the rpms increases as the engine quits, your low end is to rich, if the rpms just go down and the engine quits-too lean. All my engines have run perfectly for years on this.

Over all, I try and get it at a very slight increase. With this proven method, it really does not matter where you start your low end at if it out at least a couple turns, the rpms will tell you exactly where your at on the setting

Mid-range??? If it is the idle needle you're talking about...the one opposite of the high speed needle...then close the throttle rotor all of the way and turn the idle needle in until it stops...then with the rotor in the same closed position back the idle needle out ~1 turn. Every TT PRO .46 I have ever messed with this has worked to get relatively close. You will still need to fine-tune it more than likely with the pinch test or by taching it while running at idle to get the highest idle RPM while adjusting the needle. Either way and you'll find the 'sweet spot' again.

Yes I apologize for the wrong name it was the idle needle. It was the transition I was trying to improve and I was distracted (phone call) and couldn't remember what I'd done. I will try both methods and see how I make out. Thanks for your help
Don

Don ... the low speed needle has to be tuned, it will be different due to fuel, nitro, weather etc. Just use what Gene says as a base setting, I do that with my car engines then fine tune it to suit. If the transition is such that the engine cuts abruptly then its too LEAN and if it gurgles a bit before picking up then its too RICH. I am sure you know that ...

Yes I do know that (some days I'm not sure what I know) but I just got it so far away from good it quits in transition every time. I think I have it way too rich. I was turning it out 3 turns from closed and if Gene is correct and I'm way off. I tried the pinch test and it indicated too rich but it quit so quickly on transition I thought it must be too lean. I will try again and if that doesn't work it will be a good excuse to buy a new engine.(kidding) I'm sure I will get it right. I'm not in too big of a hurry as it is supposed to be 45 degrees and raining tomorrow then 18 degrees by Friday and windy in between with snow and freezing rain mixed in. I think I should buy a condo somewhere warm.
Don

Don ... move over here ... we can fly literally everyday!!!