speed heli settings

[morrchew]

I have built a Comet 700 speed heli im running 2900 rpm and wow does it rock . I need to get rid of the porpoise or dolphin effect at fast speeds would I lower head gain to get rid of it ? any help would be very helpful .

[ZeXx86]

You have to increase Cyclic Ring or decrease Collective Pitch range.

[morrchew]

thanks i will try that but I need to keep the pitch at 16 degrees

[ZeXx86]

This is unfortunately extremely high pitch. In other words model is at the edge of physical capabilities with current settings.
So that there is not enough room for compensating.