6degree tuning

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gordo
Posts: 9
Joined: Fri 12. Jun 2026 1:01:52

So when I tick the 6 degree box I immediately see the left pitch servo drop and only this one. Is this correct? I have gone thru all the other stages and I thought this was the last thing to accomplish however I could only get to 8 percent even though I,m not sure if this function is supposed to work this way. I might have been able to get to 6 but the numbers would not let me get to what the highest number allowed. Please advise, thanks
gordo
Posts: 9
Joined: Fri 12. Jun 2026 1:01:52

Does anyone know the size of the wire on the ball link and the thread size? Its a Trex 600. After thinking this over I believe that is the only way to fix this by raising the swash plate a small amount and I'm not sure if I can unwind the thread enough and still be safe. If I can find the size Ill buy some stainless wire and run it thru a die. If I'm way off I hope someone will steer me right.
gordo
Posts: 9
Joined: Fri 12. Jun 2026 1:01:52

I;m having a time with this 6 degree geometry. I redid the whole head and It looks perfect to me however at the lowest slide adjustment I'm still at 7 degrees. What in the world do I need to do my brain is hurting. I'm assuming this is done at 0 degree stick centered? I would appreciate some guidance, thanks
ZeXx86
Site Admin
Posts: 12988
Joined: Mon 29. Apr 2013 16:06:44
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Hello,

first you need to set precisely Subtrims. This is done in the Subtrim (tuning) menu. When entering the menu, all servo arms must be in the center as close as possible, swashplate should be perfectly level and there must be 0° between main blades.
Only after this step you can correctly set Geometry 6°.
Spirit System developer
gordo
Posts: 9
Joined: Fri 12. Jun 2026 1:01:52

i have gone thru this 6 times and very carefully. I just find it hard to believe I'm the only one who can not figure this out, On some occasions I had 7 degrees and others it was 8. There must be something I'm overlooking but I have read the material over and over and I always end up in this same place. Honestly I am whooped and beaten and just about ready to give up. I'd like to say it's been fun but I'd be lying. This is my last attempt to gt help. I have gone thru these sequences so many times I can see them on my head so Yes I am precisely doing exactly the steps that are necessary. My only wildcard is the fact that I am using an aftermarket fbl head unit and after failing over and over I decided to do what others have done and I took 11mm off the main and re-drilled for the head. Although it looks right I still get the same results
Mattes61
Posts: 638
Joined: Wed 21. Dec 2016 15:13:38
Location: Germany

Hello,
short question did you made the 6 degree on both sides ? - that's not necessary ! you should get always 6 degree -
If you get on the other side 7 degree so that could be that your blade is 1 degree off, so you have to adjust it that it has also 6 degree -
Last to say it is absolutely necessary that all servos are centered and the blades have at this point 0 degree pitch before you adjust the geometry of 6 degree at one blade oriented to the boom. For pitch-adjustment also oriented to the boom -
Then all should work and if not then its a problem of the cusom head and the geometry

BR
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