I setup my SA version according to finless's video and finally got my rotor head set to where I like it. By the way I've have not been able to get the blades to track properly for over a week now. I've changed out every component on the head but still no solution. Heres the problem.

I set up my rotor head with all of the components level for a normal pitch range of -2, 0, +10. I got this all dialed in using +10% swash Pitch on my futaba 6ex. Both blades were showing same pitch curves and checked out well after going through some flight control movements.

I spun up the head to check track again and the red blade was high so I shut it down. Heres the funny part though; after the flight test I checked the pitch and now the pitch is completely off. The pitch curve is now about -10, -5, 0 without making a single adjustment to the head after just one single runup to about 40% power. What the heck is going on here.

By the way, I work on USCG HH-65C dolphins and they are not even this hard to track and balance or troubleshoot. Any help or insight into this matter would be greatly appreciated.

"Possible" the feathering shaft has a slight bend in it? I know I have done that more than once

Did you read the review in the magazine section? I had a fit with the blade tracking. The fix is in the review.

I spent my summers as a youth in OCNJ

I may replace the shaft as a possible remedy, but I can't figure out why the pitch on the blades would change after I had initially set them just because of running up the heli. The pitch setting are completely out the window now, and I'll have to start over again setting up all the linkages on the head. From a mechanical standpoint it does not make any sense. If you set the pitch on the blades by adjusting pushrods and linkages, than the only way to adjust or change the pitch settings would be to mechanically adjust again, which I didn't do. This is becoming time consuming.

Make sure your swashplate is set abolutely level when the right tx stick is centered.


And when you set the pitch, turn the head so that the flybar is in line with the tailboom (blades are at the 3 an 9 o'clok position), and when viewing from the side of the heli, make sure the flybar is absolutely parrallem with the tailboom. Find a way to maintain the flybar parrallel and take your pitch readings this way. If your flybar isn't parrallel to the tailboom, your pitch settings could be way off, maybe by 5-8 degrees.


It's funny because on my Raptor 50V2, pitch readings doesn't change whether the flybar is parrallel or not to the tailboom, but it does change quite a bit on my T-Rex.



How I explained it well enough.... translating from French in my head to English while typing

Ive got my swahplate leveled and I have been doing the pitch readings with the flybar over the boom. I made a tool that holds the flybar at the level position while making pitch adjustments. I still have yet to figure this out.

What radio are you running?

I'm using a Futaba 6EX 2.4 gig. I have all of the settings as per the finless videos.

For accurate measurement of pitch, I clamp the flybar paddle horizontally on a piece of wood extending out from my vise. Cut off a broken blade close to the rotor hub and epoxy a 1/8" plywood platform to the end. Use this to hold a pocket level (yellow plastic, Home Depot, about 5" long). This gives you a good zero point. You can then cut a wedge of any angle you want to measure from plywood. Put this under the level to measure any angle. Seems like a lot of trouble but very accurate.

After numerous new part changes I noticed that the was a slight bend in the main rotor shaft. When I checked it prior against a new shaft it appeared to be perfectly flush against a new however when rotated there was the tiniest gap. This appears to have fixed the problem. Thanks for all of the input.