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CF Pushrod / Ball Links Instructions

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Colin McRae:
I was wondering if anyone was aware of a good instructional video that might be available on the best techniques for making up pushrods using CF tubes and ball links. I have not use CF pushrods to date but am planning to on my future builds.

I am currently working on a smaller size Brodak Yak-9 with flaps so the rods will be relatively short in length.

Thanks in advance.

Mike Morrow:
Do a search for "pushrods". Should be most of the info you need. Central Hobbies has the parts you need.

Mike

Colin McRae:

--- Quote from: Mike Morrow on January 01, 2024, 11:36:15 AM ---Do a search for "pushrods". Should be most of the info you need. Central Hobbies has the parts you need.

Mike

--- End quote ---

Thanks

I did do a bit of searching and have read a little. Will do more. I was just hoping there might be a good video out there. But I will make due.

Ken Culbertson:


This is my preferred method for a profile where I do not need one that can be twisted for adjustment.  If you can find left hand 4-40 all thread you could make one twist adjustable.  Hard enough to find right hand at a reasonable price.  I prefer all-thread to formed ends because there is no stress on the thread from machining.  Towards the end they stress putting the pushrod in a jig like vise to keep the air pressure from pushing the ends out.  That is real.

If you can't find all-thread buy some long 4-40 or M3 metric bolts and cut off the heads.  Put the cut head into the tube.  Wrapping is easier with threaded insert since you can wrap the threads.  Use Kevlar thread.  You are not wrapping just to keep the bolt in, you are wrapping to keep the CF rod from splitting.  If you want them to be twist adjustable, I use stainless steel L/R Studs.  They are like the DuBro turnbuckles but much stronger - and cheaper - if you can wait for them to get here from China. 

There are more on YouTube, and I think Sparky has one somewhere in his series.

Ken

Colin McRae:
Thanks Ken. The video is just what I needed.

Like I always do, I will do a practice one to be fully aware of all the steps.

On the smallish Yak-9, the 2 rods are only like 9" long. I assume a 3/16" OD rod (1/8" ID) is adequate. Or is a different size recommended?

And what is the best method for cutting the rod to length when needed?

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