Sun Jul 07, 2019 12:28 pm #1704537
rogerb wrote:Let me first say I do burp a cold engine, however:
The thought of prop turning without chocks or someone at the controls does not sit well with me.
The intro of the 912 brings forth several issues when viewed from those who are more used to "most/all?" Other aeroengines.
PS I have seen overfilling of rotax oil due to lack of burping.
PPS I also like to compression check these other engines and leave the prop just off compression to ease starting loads. I imagine this could start another topic
It is possible to hand prop a 912 but because of the Gearbox reduction and the minimum 200rpm you need to get the electronic module to fire it’s highly unlikely at burping speed,
You are only slowly turning the prop after all, but I always on a 914 switch off fuel pumps as part of my cooling down until the engine falters then switch off the mags, So next time burping there is no fuel in the carbs,