Coating for carbon shaft?

[bklein]

Sand gets between my CTX shaft lock and the shaft and wears down the shaft diameter.
I clean the detector after each trip but don't take the shaft out normally to clean.
The lock is getting weak due to the thinner shaft. What should I coat the shaft with to build up the thickness so the lock works better and the shaft is not compromised?

 

[sube]

I would go with epoxy not 5 minute but 1 hour epoxy the reason being is 5 minute is weak as to 1 hour epoxy . Also when you apply it you must have a slow motor to turn the shaft for a hour like putting eyes on a fishing pole if you don't you will get a drip by using a motor it well be the same diameter all around . sube

 

[jas415]

If it is locked down how does the sand/debris get under the actual lock or cam lobes? Do you do a lot of length adjusting or collapsing the shaft? Before I got 2 extra Anderson shafts I used to change coils, but I have never had an issue there at the cam lock. I did have a wobbly/loose feeling in the shaft about 2 years ago and it was caused by a groove worn where the handle assembly meets the upper shaft.

http://www.findmall.com/read.php?86,2063667,2063667#msg-2063667

Do you think an application of epoxy paint over the locking cam lobes would help? Not sure I would attempt to coat/recoat the shaft, but I might try a thin tape there to see if that would help. Do you have other shafts and are they also loose? I bought 2 Anderson shafts for my other two coils, but I find I use the small factory coil about 90% of the time..

 

[bklein]

I collapse the shaft after cleaning on each trip for storage. The wear is increasing because more and more of the gloss coating is being scraped off. Once it gets this way the carbon fibers are exposed and wear down easily. I think it needs a recoating but it doesn't/shouldn't have to be thick. The epoxy might work but might be too thick. Might try a clear coat of polyurathane finish but not sure it will stick. Need to know what was originally used. I only use the original shaft - no Andersons.
My unit had the control box wear on the upper shaft too. I took it apart and put Gorilla carbon fiber tape in there as a shim/gasket but built up the worn area first with CA glue. If I had left that alone it would soon have snapped.

 

[bklein]

I went with the epoxy. Just smeared it on with my finger and stood the shaft upright until it hardened.
Still not tight enough - probably should do another coat but I used a couple layers of CA with hardener on the latch tangs instead.
I might want to use it tomorrow and another coat of epoxy might not harden enough overnight.

 

[trojdor]

bk,

Someone on here (fairly) recently posted about using zip ties (tie wraps) to boost the function/holding friction of the latch itself...

I haven't been able to find it yet, but when I do...I'll let you know.


mike

 

[trojdor]

...I seem to remember it as being a simple fix where you loosen the latch and put the cable ties in between the latch cam and the part(s) that press against the shaft...thus giving it an extra millimeter or so of preload.

The hunt for the pics is still on...

mike

 

[trojdor]

bk,
Well this isn't the post I remember, but this vid shows the same idea...

https://www.youtube.com/watch?v=HGQnJ8KzpdE

Hope that helps,
mike

 

[pistolpete]

I made that post. Look for posts from pistolpete....