Prince 'P' tip 54" length 50" pitch 32". At 2000' map=3200rpm = 142 mph IAS 370 cht 1400 egt. 35"map 3500= 150 IAS 390 cht

Preignition IT'S NOT detonationLEAD ON THE HEAD.    • Detonation? NOT it's PreIgnition in ...  

Dude Mike Farley is getting 40" at 8,200'!!!!!    • High altitude turbo flight with Micha...   @ 7:55 39" 8,200' 90mph 600 ft/min....I'm getting an even firmer spring now...Mike you da man!

I think i figured out! That the spring will hold it's rating PLUS ambient. So if ambient pressure is 30" and google says a .3bar spring is 8.85" then 30 + 8.85 is all I will get with the spring at sea level. So if pressure decreases at 1"hg per 1000ft then at 5000' I will get 25" + 8.85 = 33.85. There ya have it! I"m putting in the .5 bar = 14" so at 5000' I will have 39" availiable. In Michael Farley's vid he adds map at will at 7000'. Man i'm going to get it all figure out at once!!! I hope all this works I"m getting excited now..