Countershaft issue

[Kurlon]

Isn't Alex's running the same custom front sprocket and retainer setup? Pester him to take his off and see what's going on in there.

[Tricky Mike]

Have you tried texting the RMZ to ask if you could tap that?

[Pittenger5]

Have you tried texting the RMZ to ask if you could tap that?

[slammp]

You lost me at the NUTsert

[Pittenger5]

From what Im seeing with nutserts, there needs to be space on the other side so it doesnt just pull out. The shaft I have is flat around the inside, would jamming the nutsert in be enough to hold it?
And does anyone know where I could buy just one or two to givei t a shot instead of an entire box?

[Awesome]

measure the inside diameter and debth of the hole in the shaft (gigaddy) and let me know.

[obsolete]

Go to Fastenall in Lynn Salem or Peabody. They may have something.

[Pittenger5]

A 5/16ths drill fits, a 21/64ths does not, and its more than an inch deep.
Precise, I know.

[Awesome]

That's pretty small (that's what she said)

I was thinking you could use some spare hardware from a set of bark busters. I may or may not have some laying around, I'll have to check. Even a length of tight fit rubber tube would work, thread in a bolt and it'll hold some decent pressure.

[Tricky Mike]

Maybe take a regular steel nut of appropriate size and thread pitch, turn it down on the lathe from hex to round so that it's a light press-fit into the ID of the countershaft bore. Press it in, TIG a couple quick tack welds and call it done
EDIT: yeah, 5/16" is pretty small for this approach... it'd require a pretty small bolt.

[Tricky Mike]

http://www.mcmaster.com/#catalog/115/3241/=48qn68

Even the Nutsert/Rivet stud approach is only going to offer a really small bolt...
a 1/4" bolt requires a 25/64" hole (which is larger that what you have).

[obsolete]

Mike, what do you think about welding the spacer to the back of the sprocket and turning down the face of the sprocket to allow use of the stock clip?

[Tricky Mike]

Mike, what do you think about welding the spacer to the back of the sprocket and turning down the face of the sprocket to allow use of the stock clip?

The sprocket is going to be hardened steel... tough to cut, and the possibility of losing temper when welding it.

May not have to weld it at all.

Looking at LocTite 603 and 638... 638 looks promising...Urethane Methacrylate designed to bond cylindrical fittings... cures anaerobically, etc...

So, turn a bolt down to proper OD to fit the ID of the countershaft (LocTite has guidelines about bond gap), press it in, let it cure and go racing



https://tds.us.henkel.com//NA/UT/HNA...ile/638-EN.pdf

[obsolete]

The sprocket is going to be hardened steel... tough to cut, and the possibility of losing temper when welding it.

May not have to weld it at all.

Looking at LocTite 603 and 638... 638 looks promising...Urethane Methacrylate designed to bond cylindrical fittings... cures anaerobically, etc...

So, turn a bolt down to proper OD to fit the ID of the countershaft (LocTite has guidelines about bond gap), press it in, let it cure and go racing



https://tds.us.henkel.com//NA/UT/HNA...ile/638-EN.pdf

That's what I was thinking, about the welding it. Stupid hardened Steel.

How would you remove the sprocket with the locktite holding the bolt in there? Is it heat release?

[Tricky Mike]

That's what I was thinking, about the welding it. Stupid hardened Steel.

How would you remove the sprocket with the locktite holding the bolt in there? Is it heat release?

I was thinking of cutting the head off of a bolt and pressing it in like a stud... so then use an appropriate nut to hold the sprocket on...
Need to remove the sprocket, pop the nut off and the stud stays where it is...

[obsolete]

Oh, I thought you were saying turn down the threads and stuff it in thread side first.

[Tricky Mike]

Oh, I thought you were saying turn down the threads and stuff it in thread side first.

Well, come to think of it, it IS Richie's bike

[obsolete]

How much lateral force will that thing see? That's a small bolt. Then again it held on with hopes and dream before so...

[Kurlon]

What's the outside diameter of a wellnut?

[Pittenger5]

Hmm, maybe Ill try the bolt idea.

[Tricky Mike]

How much lateral force will that thing see? That's a small bolt. Then again it held on with hopes and dream before so...

Probably relatively little. The threaded portion of the stud could be fairly large, actually... say 1/2" x 20? The part that needs to be turned down to fit the countershaft could just end at a shoulder that rests against the shaft. so, the remaining threads could be a bit bigger than the hole, as long as there's enough clearance for the ID of the sprocket to pass over it.

[Tricky Mike]

Hmm, maybe Ill try the bolt idea.

what's the condition of that bore?... you said you had tried to drill it out? Is it all farked in there?

[Pittenger5]

what's the condition of that bore?... you said you had tried to drill it out? Is it all farked in there?

Nah, seems to be relatively smooth still. The end is a little chewed up, but nothing major

[Tricky Mike]

Word, let me know if you wanna bring it over... you can get that LocTite stuff at MidwayUSA. 620 or 638 should do it... 620 has higher heat resistance, but I don't recall having felt a really hot countershaft... I think 638 is good to 100deg C.

http://www.midwayusa.com/browse/Brow...1***&pageNum=2

EDIT... maybe 620 would be better... looking at the 638 data sheet, the engine heat could be an issue...

[Pittenger5]

Haha well its going to your place at some point anyway, maybe Ill just wait till you take a look at it.