6x6Talk Forum
6x6 Technical Questions => T-20 Transmission => Topic started by: garretttpe on April 12, 2018, 07:59:36 PM
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Hi All
I want to re modify my T20, I want to fill in the threaded holes I made in the cases for my popsicle sticks (did the mod 3 yrs ago) and re drill them square to use dowel pins as whipper did. I am thinking of using Devcon to fill in the threads than re drill square to the case.. Does this seem like a good plan?
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Don’t know if the Devcon is a good idea,I’ve never used it nor have I even heard of it.
How will you keep the dowel holes square with the case?
The dowel pins need to be a press fit. And that could.be tuff to do with a hand drill
popcorn popcorn popcorn
dance dance
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Devcon is a very strong epoxy with metal fillers. Technically it should work provided the prep is preformed. Best would be to oversize the hole and use a threadsert to reduce the diameter to to the thread you want. Using Devcon to fill the hole to keep your drill machining straight is probably a good idea if you have limited machine tooling.
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I would split the cases and have it welded. do it right the second time I guess
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They used something called helicoils in mine
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Garretttpe what size threaded hole and how deep do you need to redo?
A threadsert to consider would not be a Helicoil but a solid insert. Like a tube with a internal and external thread. To properly weld a blind hole to fill it from the bottom up the hole will have to be enlarged and may not be practical when a thread insert will do.
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I have used helicoils and thread inserts often in Aviation, my threads are fine, I am looking at using pressed in dowels like whipper has done.
all I am trying to do is make it look cleaner. the shifting works great and I have 6.5 inches of total movement. just trying to tighten things up a little. I agree with you whipper, I would have to split the case and put it on a drill press to keep square.
dont know if this is all worth it right now since all works fine
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if its not broke don't fix it . Just saying whistling
If it works and you can't see it from the seat run it !! banana
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Drive it like a rental.
banana banana banana
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looking closely at your photo the existing pins they do look a bit random. Whipper has modified the the "u" channel pivot with a shoulder bolt. if you want you can square up the installation using a shoulder bolt
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They are shoulder bolts at the pivot.just a bad picture
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I just looked at you pic again and I noticed that you popsicle stick are on wrong.
They should be straight up and down.
It should be on the outside of the eyelet on the top, and the inside of the
eyelet on the bottom.
banana banana banana
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I think thats because he drilled the holes wrong , probably why he needs to start over..at least thats what I think I see .
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You may have to make a custom spacer.
After you start over.
dance dance dance dance
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Whipper that is exactly how they did mine.
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Hi Al
yes my intent is to re due my popsicle sticks to match what whipper has done. I hand drilled mine back in 2015 without splitting the T20. the shifting works perfect and have no real issue, I just want to tighten it up some more. I have more issues with the rod ends not being solid and that gives me some play, does not affect me but it is there.
As stated to me from other members, if not broke drive it like a rental, I have no issues so why spend all the time splitting the case.
I will for now use solid rod ends and if that takes up some "slop" than i wont waste my time re doing it, If I end up not happy with the solid rod ends in this configuration than i will spit the case fill with Aluminum Devcon, and copy what whipper has shown.
thank you all for input, this site and you guys are awesome
Larry