My Accucraft K-36 has a lot of slop in the universal coupler and its clear one of the steel pins will break soon. Accucraft does not sell this part so when it does break any idea how to fix it? I could drill out the pin hole and put in a steel bolt or replace the universal with one from a RC car. Has anyone had this same problem?
This is similar to the universal in my K-36 but this is from a RC car. The small pin in the center is what is about to break.
Okay, I have to admit, when I first saw the title of your post, I thought… “why does he want to use a paper clip or bread tie to pull his train with the K-36?”
That’s a nice looking universal joint in its own right. Do they sell them to similar size as to what’s in the K and you could just replace the whole unit? You might try servocity.com to see what they have. They’ve got lots of servos, gears, chains, and drive components.
I had a universal on a Berlyn #6 goose split on me, though at the base. I was able to repair it, so I didn’t need to find a replacement, but my thinking was that neither Berlyn nor Accucraft had these components custom-made for them; they had to be off-the-shelf from somewhere. Just a matter of finding the right “somewhere” to get them from ourselves.
Later,
K
The universal in the photo is just an example. I need to call Accucraft to get the shaft size.
OK, Gents had to stop and look it up! Try this site" https://sdp.si.com/index.asp". You will find what you are looking for! Paul Austin
Bob McCown said:
Stock Drive Products is a dangerous site to know about for this kind of stuff.
Thanks for the link Bob! I’ve been trying to figure out a telescoping UJ part for a build project, and now I have a possible source.
Any idea what diameter the motor & gearbox shafts are?
Cliff at Accucraft says 6.33mm so the hunt is on for a replacement.
The hunt shouldn’t be too hard… that’s 1/4 inch
BTW… thanks Bob, great resource.
Looks like the 1/4" to 1/4" will work.
