ORIGINAL: Pawel Rzedzicki
I got another question. When tuning the HSN you do it with running engine? Or stop it, retune, restart and tach? I measured my dl with 22x8 biela and it was only about 6700-6800 rpm. I read some forum users suggest to peak the rpm and then richen about 200 rpm. In that case i wouldnt get enough power for my 8 kg with fuel Yak.
Biela's are known for HUGE loading of an engine, yet produce pretty good thrust. I've since moved on to other props, but used to run Biela's. I thought they were always a little slow to come up (probably due to the loading), and found I preferred the NX and Xoar.
I still have Vess' that are untried, but will do that soon. My DL 50's just really perform excellently with the Xoar and NX props. I do not like to try to adjust running gassers. My preference is to shut down, tweak, then restart.
Doing it that way makes me KNOW how the low end needle is set, because if restarts are hard, it ain't right yet....