looking to possibly buy a x7

[dodgeboy]

i think my main issue id like to know is, has the pitch arm binding issue been resolved ?
i have been reading "some" here and havent read where its been solved. it may have and i missed it.

[Chris Sexton]

GAUI has released a new link with a tapered shape that should help, but no, I don't think there has been a permanent fix.

I personally have Schu making me a set of blade grips that I can run the compass arms on. Seems like a good solution. Others have trimmed down the main shaft 2-3mm and bolted on the align 700DFC head.

[Magooch]

It is a great heli, I just came in from 2 flights. I have not had any issues with binding. I turned my bottom link all the way down like in Matt's build thread, the top thread only has a mm or two gap. You could fill the gap with a cut down link like Matt suggested. I believe Gaui chamfered the ends of the rods to keep from catching, not sure if they are in the kit now or not.

[Matt Nasca]

Originally Posted by dodgeboy

i think my main issue id like to know is, has the pitch arm binding issue been resolved ?
i have been reading "some" here and havent read where its been solved. it may have and i missed it.

I fixed the pitch arm binding on mine, even though I never had it bind in flight. It's a pretty easy fix until Gaui comes out with a permanent solution. I just used a small plastic spacer (2mm cut from an old link) to fill the gap between the bottom of the link and the rod. Took 10 minutes, no chance of binding and it's worked awesome.

Edit: Wether or not you use the stock rods or the newer chamfered ones, I'd still use the spacer on one of the links. It's just too easy, not to do it.

[dodgeboy]

Matt, do you have a picture of this so i can better understand what your talking about.?

[dodgeboy]

is the issue where the links are binding on the swash drivers on the head ? i thought i saw a pic of those guides where the ends were removed ? could you just cut off the boxed end of those guides ? what are the supposed purpose of them ?

[Matt Nasca]

Originally Posted by dodgeboy

is the issue where the links are binding on the swash drivers on the head ? i thought i saw a pic of those guides where the ends were removed ? could you just cut off the boxed end of those guides ? what are the supposed purpose of them ?

Here ya go. I posted the fix in the build thread. The guides are the swash drivers. In extreme throws, and depending on your setup, they can catch on the threaded area of the rod. With this fix, it doesn't happen at all.

https://www.helifreak.com/showpost.p...5&postcount=86

[dodgeboy]

thank you matt.

what if the swash drivers were made to where the ends where open ?
couldnt you cut the end of the swash driver off ?
does the end of it serve a purpose ?

[dodgeboy]

im not sure, but could the bolts that hold the swash driver be tighten up enough to where it would not swing or be loose and then have the end of the driver cut off ?

just thinking out loud here, as i dont even have the parts infront of me

[Matt Nasca]

Originally Posted by dodgeboy

thank you matt.

what if the swash drivers were made to where the ends where open ?
couldnt you cut the end of the swash driver off ?
does the end of it serve a purpose ?

There was an original prototype that had an open driver design but it wasn't used in production.

Originally Posted by dodgeboy

im not sure, but could the bolts that hold the swash driver be tighten up enough to where it would not swing or be loose and then have the end of the driver cut off ?

just thinking out loud here, as i dont even have the parts infront of me

Funny you mention that, I was recently speaking with someone who had the idea to CA the drivers straight out, apparently that works as well. I already put on my solution so there is no need to have the drivers in a fixed position.

[Rob Cherry]

they are allowed to swing for a reason. It's a friction based design, so if they do happen to bind in flight they will simply pivot up or down with the pitch link instead of locking the pitch link altogether. Don't lock them, you may be sorry! haha.

MSH had a similar design in the first FBL upgrade for the Protos, it took me a few crashes to figure out what was causing the heli to completely wig out and become unresponsive, the pitch links were locking in the fixed plastic guides and mini servos just don't have enough torque to overcome the lock. They replaced that design with a conventional swash driver.

[Harrow]

I'm guessing that if you CA the swash drivers in place, then they will wear out very fast, since even the smallest cyclic input will have the links constantly sawing away at the plastic.