JR Venture 30 with carbon blades won't track

[hackiero]

Greetings all!

I'm having a strange issue with my Venture 30 that I'm hoping someone else has seen before.

I have always flown with the standard wood blades on my JR Venture 30 and haven't had any of the "usual" tracking issues I've read about.

A friend gave me a used pair of 550mm Thunder Tiger carbon blades. For some reason, I can't get the carbons to track correctly for anything. One turn of the longer links to the mixing arms makes them track completely the other way (#1 tracking high, turn one link, then #2 tracks high)
I bought the Ergo grips and replaced the bearings, spacers and dampners just in case. Didn't help a bit.

The carbons are as balanced as can be for both weight and CG. (even used a small spray of clearcoat to get them dead on).

The funny thing is, if I put the woodies back on, they track great!

Is it possible that I just have a bad set of carbons? They were a used pair from a big batch of parts, but don't appear to be damaged..

Any thoughts would be appreciated.

Thanks!

[frankos72]

I've always wondered if this could happen. (the perfect spot was 1/4 turn) I'd be interested to hear the answer from someone that might know.

[Garland]

sounds like your chordwise blade balance is off. if ya have already done the head mod it sounds like your woodies are balanced better then the CF which shouldnt happen.

Tack a nail on the edge of a desk and hang a Cf blade till it almost touches the floor with its tip. Let a denta floss with a weight on the end hang line it up with the blade hole. It will line up or not. easiest is get new CF blades