- Nov 13, 2006
- Madrid, Spain
- ELA R-100 and Magni M24 autogyros
- Total Flight Time
- 816 gyro (Feb. 2022)
You don't do that (keep pre-rotator in during ground run) - Magni is effective for these reason IMO:-
1) the pre-rotation process is to bring the stick fully aft from 120rrpm until the end of the PR phase at (say) 200-220. (so nobody sets off with the stick in the "wrong" place). Being both fully back and easily identifiable as centred.
2) the keel doesn't allow over rotation easily
3) fully aft stick in a Magni gives a rotor angle of around (off my head) around 17-18deg whilst AG is more like 21 (I think).
All these things make for the lurch into the air at low airspeed less likely.
Some people do that. The dealer for Magni in central Spain does participate in competitions, and he does that... A French rival he had (who won) not only did the same, but he had modified the pre-rotation transmission of his Magni installing a triple pulley in place of the standard double pulley.
I use to fly a Magni 24, but not (yet) dare to keep the pre-rotator engaged during the take-off run... The M24 is tricky, and I don't want (nor need) to introduce an additional complication... But I've been told that it's easily done in the M16/22.