MJA
Key Veteran
Location: Cumbria-UK
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Yes,do them with the heli pointing away from yourself.
Seriuosly though,take the heli up high,that way if the setup is crap or you bog the motor down you should be able to recover without going to pick any bits up.If you can't fly very high yet or at reasonable distance work on the forward flight some more until you can.
To do roll or elevator flips with no forward speed you'll need a fair bit of negative and throttle in idle up,at least -6 with at least 60-70 throttle at low stick,or use a -10,0+10collective with 100,50,100 throttle symmetrical pitch/throttle
type setup,with some cyclic to throttle mixing(if you don't have a GV-1).The mixing isn't essential but helps with rpm loss on underpowered heli's or sloppy timing,which also helps stop the tail stepping out of line,or used to before HH came along.
To do an elevator flip forwards(from upright) , just hold forward cyclic and time the collective(start to take some positive out) to pass through roughly 0 degrees or slightly negative when the heli is nose down and then into enough negative to hold the height through inverted and then transition it back to positve going back to upright.To do them cleaner with less height loss you need to kick the positive pitch slightly (past and above the amount needed to sustain hover)on the first half at the same time the cyclic is initially applied and held in (but only briefly overshoot "kick" on collective before taking it back out).Also kick it into more negative
for a short period while going through inverted back to upright.
Don't worry about trying to kick the collective to start with,just try to time the collective to stop the heli falling inverted to begin with whilst holding a constant cyclic input throughout
A roll flip is basically the same but with L/R cyclic instead of fore aft.
Generally do the rolls into wind ,if there is any,for std FFrolls or roll flip,it makes the collective appear more powerful (less critical on timing) and doesn't need as much engine power in general,for FF rolls it also cuts the groundspeed down.
For an elevator flip start it with the wind direction (tail to wind) so the second half (the recovery from inverted to upright) is back into wind direction
It's all about timing and the setup of the heli really.If it's underpowered or flips too slow it'll make the timing harder,so until you know what it does ,do the first ones quite high in case it goes pear shaped on you.
Also if you find the collective with combined cyclic drags all the rotorspeed off,it's better to take some out and keep the cyclic,but the panic reaction is usually to slam more of both in,which just makes it worse
Martin |
