my tails shuddering

[loz]

as it says above the tail on my 450 sport is kind of shuddering, its not consistant its almost like a pulse, ive tried up and down with the gain from 55% up to 70% but it isnt making any difference
any ideas anyone

[mickwilliams36]

The tail on my 450 sport was shuddering to differing degrees at different head speeds. It turned out to be a slightly bent mainshaft. I have no idea how it got bent as I'd recently installed it and not had a crash, but as soon as I replaced it again the judder went away.

Hope this helps,

[loz]

The tail on my 450 sport was shuddering to differing degrees at different head speeds. It turned out to be a slightly bent mainshaft. I have no idea how it got bent as I'd recently installed it and not had a crash, but as soon as I replaced it again the judder went away.

Hope this helps,

ill check mine then, as u said i also wouldnt know how mine could b bent either but i will have a look at it, cheers

[loz]

yes mick my main shaft is slightly bent, so have replaced it, im just starting to recall an incident with a bush a couple of weeks back, lol, ill try her out later see if the shudders gone cheers again, loz

[loz]

hmmm, just hovered a couple of packs and its marginly better but its still juddering, any other ideas welcome, cheers

[amh]

Are you main blades balanced and blade tracking all ok? I have had a shuddering tail on my 450 sport when they were out.

[challis349]

If your main is bent have you checked the feathering shaft, and tail out put shaft

[loz]

Are you main blades balanced and blade tracking all ok? I have had a shuddering tail on my 450 sport when they were out.

well my blades are only cheapo glass fibre ones as i didnt want to keep breaking good ones but i did take the time to balance them, tracking seems pretty good but will check again, i spose i could put my align carbon ones on temporarilly to see if it cures it

[loz]

If your main is bent have you checked the feathering shaft, and tail out put shaft

yes its just had a new feathering and took tail too bits earlier checked shaft and seems fine

[challis349]

So main gear, tail drive gear, one way bearing slipping?

[loz]

So main gear, tail drive gear, one way bearing slipping?

was just gonna mention tail drive gear, one way bearing, this may sound dumb but how do i test that lol?

[xygax]

my 450 sport is kind of shuddering,

I see you baby ..... shaking that arse......

[loz]

I see you baby ..... shaking that arse......

Lol haha /\ /\

just been speaking to heliboy (aka joes heli service) think im gonna change the tail shaft first and see what happens from there

[murph]

Check your gyro loom as well. I had a sllight kick on my Trex 500 a while ago, turned out the loom from my gyro (Quark) had chafed a bit and the conductor was touching the carbon fibre frame. Got it repaired and all works fine now. Worth a look anyway!

[loz]

Check your gyro loom as well. I had a sllight kick on my Trex 500 a while ago, turned out the loom from my gyro (Quark) had chafed a bit and the conductor was touching the carbon fibre frame. Got it repaired and all works fine now. Worth a look anyway!

ok cheers will do