Throttle Curve setup

[miragewsu]

I'm trying to find info on optimal setup with throttle curves. I'm running a YS50 and Align pipe. I've past the break-in period and am proceeding to lean the engine out. The max temps I am getting is around 150 near the top of the cylinder head (the part right below the shroud). My curve is set at 87-60-87 in a V-shape. I'm running around 1900-2000 rpm. I do get some bogging at max pitch but its not too bad. I'm wondering if I should raise the curve up to 100% at the edges? I don't want to over-rev the engine though. I do get a bit of speed-up in a descent. It's tough to figure out how much though. Doesn't seem like much. I'll be getting a governor in the coming month but just want to be safe with my setup in the meantime. Thanks for the help!

Brian

[Forced_Induction]

if you lower the 2nd and 4th points then there wont be any overreving. i think mines at 100,55,40,55,100 in idle 1. something like that wont give too muck power until higher pitch ranges.

[rototiller]

I back that up with a 100,66,48,and so on. But mine is os and align pipe. still works really well IMHO.

DK

[RC Hobby Sports]

Ok I will go with more of a U-shape. So is over-revving that bad that you don't want it ever occurring? Or is it something that harms your motor over time?

thanks,
Brian

[Forced_Induction]

you should never have overreving unless you are decending when the increased airspeed through the rotor causes it to speed up and with the engines power, will speed up quite a bit. during forward flight, inverted, turns, climbs, ect the engine should stay pretty close to the same rpm. the only way to prevent it from unloading in a decent is to have a governer that can compensate for that.

[RC Hobby Sports]

yup descent is where I got the over-reving. I think I can adjust my throttle curve for now, but a multigov will be in my future for sure. Less hassles and I am used to running the govener in my electric heli's anyways.

[Burt]

Ive used the mas technique with my raptor 30v2 with 0, 25, 50, 75, 100 and idle w/ 100, 75, 60, 75, 100 with a Futaba Gv-1. Pitch Curves was straight Linear also 0, 25, 50, 75, 100, Is this acceptable for the trex, because my information and setup was from 3 years ago, I didnt want to make another post so il post this here.

[Forced_Induction]

adjusting throttle curves wont help the heli from unloading while decending, only a gov can do anything about it. i didnt worry about it, just try not to bring the heli down like an auto while in idle up

[Forced_Induction]

Damn, i forgot the smiley :)