Helical autorotation gear?

[Inkslinginmofo77]

I have a trex 700E I converted to the 800E with blades, boom and head. I am fighting some vibrations from the gear mesh causing tube and tail issues and was wondering if anyone knows if the helical (slanted) 104 T autorotation gear runs smoother than the traditional gear? I run lower headspeed due to the blades. Between 1600-1700 rpms and want to speed up the tail so I'm going to the 22T umbrella drive gear to speed up the tail. Anyone use the helical autorotation gear? Can anyone verify that it's better? Thanx

[whan1]

Why change the setup? U need to go thru your build up and check all mechanic out making sure everything spins smoothly. I upgrade my 700E to the 800E and I did use the slant gear auto rotation. And didn't change the gearing from the original gear set up.


Happy flying

[Inkslinginmofo77]

Running lower headspeeds causes the tail not to hold very well as it doesn't have the momentum to compensate. Especially when it's all 700 gearing. The 800 dominator has the 104 tooth slant auto gear and a 22t umbrella drive slant gear. Which will slightly speed up the tail. I'm modifying to get the tail to compensate for the lower headspeeds. But I just wanted to know if the slant thread smooths out the gear vibes?

[338federal]

I have 700E V2 with 800E tail. Slant autorotation 104. Only tested with 800 boom that fits 700 original tailboom block. Tail was not holding in low rpm. Now i have the original 800E tail. Not tested. 3cm longer than the other 800 boom. More torque from the boom. Think it be better but not enough. I fly with with 1200 1600 and 1800. I like the low rpm