Thunder Tiger 1.20 Solution !!!!!!
Problem solved !!!!! At the urging of some of you I went out and spent $35.00 bucks on a perry pump.....Wow Like night and day !! I then unplugged the second stinger coming out of my muffler which I had plugged to create more pressure.....even better with more r.pm.... I am spinning a 15x8 prop and she pulls my Ultimate Bipe straight up !!!!
This plane will now sit on the ground and idle forever at a very low idle... after more than a few minutes I wack the throttle and she hits hard...!! In flight same results..!!! Idle to mid to full..beautiful transition !!!
I would encourage anyone who has one of these to put on a pump and enjoy flyin again !!!!
Thanks
Alan