Pitch -+13

[X]

What would happen if set the pitch to -+13?

Thanks,
x

[ChrisLaFollette]

Depending on whether or not the engine can pull it... it would haul ass....

[WayneBrown]

pretty much true...
As long as the motor will carry the blades, You'll find it will motivate pretty good.

[X]

Seen lots of pro such as Eric L, Alen, Marcus, etc. Their machine so pop. Meaning that most of them are running -+13?
Thanks,

[ChrisLaFollette]

I doubt they are running 13. Eric isnt really sure what he runs as it all depends on blades and weather and how the engine is running, neither am I but I have measured it before and im usually around/like 11-12. The "pop" is the lightweightness of the heli and the fast servos they are running (Futaba 9451's on 6v).

Quote from a PM from Eric:

I set pitch by feel and what I want on a certain day. It all depends on how the model is flying, weather, and how strong my motor is running. It may be 10 degrees, it may be 12.5.... depends. When people are practicing I recommend running only enough pitch so you don't bog the head when learning maneuvers. If you bog at a bad time and loose the tail it could be very bad. The rest is personal setup.

[WillJames]

Seems like most of the top dawgs are runnign about 12.5, but I have flown their machines and it is very hard to manage unless you are an expert.

The POP happens around center stick and depends on the blades they are running and also how much pitch they are running at the quarters. (1/4 and 3/4 stick). They could be running only +-10 degrees total collective and they would still have the POP around center stick. Watch a video of Eric or Bert or Marcus or HC or Matt Botos or any of the guys who fly the POP style (especially Marcus) and you will see what I mean about the POP is around center stick.

[DavidH]

X,
You can run - + 14 degs if you want. But the difference is that you can not fly the heli around at full positive or negative pitch for long periods. You can only use it in short burst and when no cyclic is being used.
I actually have a lot of pitch in my helis. But I fly around mostly at 1/4 and 3/4 stick. Only going full collective each way when needed.
Also something else to consider. If you have 13 degs of pitch each direction. Then you have 6- 8 degs of cyclic left/right and fore aft. If you give full collective and full cyclic then you will have the blades at 19-21 degs of pitch. They are pretty much going to be stalled.
I think the best results from a 90 size heli come with the pitch range about 10 to 10. Then about 6-7 degs cyclic at full deflection. That will keep most pilots out of trouble and give them a good flying model. This would be in the idle up flight conditions

David

[X]

Thank you very much for the info. Learned alot from your guy. Happy 4th of July.
x

[Gary O]

I've noticed in really heavy air, ie... extremely high humidity, or really hot, I need a little less pitch, but on drier, cooler days I can run a little more. Having multiple machines though I just keep them pretty much +- 10 each way except for hold which I'll keep around 12. That way when I pick another heli up I don't have to try and remember how I set it up.

[Bert Kammerer]

I agree with David, +/- 10 on collective and +/- 6 on cyclic is a safe setup and any 90 size heli flies very well like that.

I personally run +/- 13 on collective and +/- 9 on cyclic, but I could very easily stall the blades if I wasn't careful. The pop like Will explained comes from hitting collective/cyclic at the same time when going flat, it is kind of like a synchronized motion of collective and cyclic, you need large amounts of pitch (collective and cyclic) combined to make it pop. V's bite the air better and require less pitch, but any other blade can pop. I've seen Matt pop Radix blades over and over, he just runs a little more pitch than us V blades guys.