Countershaft issue

[seth399]

Why? I have a girl, I dont care how ugly I am anymore.

touche...

[Tricky Mike]

I don't want my post to be taken as I think it will be an issue. I'm just curious about how the physical forces whould opperate and what would change the reaction of the materials. I'm just a curious fella.

Yeah, that's totally the way I took it too. It's all good, Joel.
I hadn't really thought about it to be honest. It's interesting. The OD of the bolt is about .0015 larger than the ID of the hole I stuffed it into. What happens to that .0015? Does the bolt compress? Does the shaft expand? Both? To what extent? Is it like a matter is neither created nor destroyed kind of thing? Help us baby Jesus. Help us Tom Cruise.

[Pittenger5]

Same place as that sock that gets lost in the dryer.

[Tricky Mike]

Fucking asshole sock and .0015 hanging out... drinking Zimas... laughing at us.

[Sheppo]

Same place as that sock that gets lost in the dryer.

Hey I hate that place...

[obsolete]

Yeah, that's totally the way I took it too. It's all good, Joel.
I hadn't really thought about it to be honest. It's interesting. The OD of the bolt is about .0015 larger than the ID of the hole I stuffed it into. What happens to that .0015? Does the bolt compress? Does the shaft expand? Both? To what extent? Is it like a matter is neither created nor destroyed kind of thing? Help us baby Jesus. Help us Tom Cruise.

Do you think the strength of the material is a bigger player than the actual angle and shape in which the force is applied? I would think a ring expanding would require less force than a cylinder being compressed. But does a hardened steel ring resist deformation more than a stainless cylinder? What if they were both the same material?

Just kinda where my brain was going with that, but unfortunately I do not have the knowledge in physics nor metallurgy to answer them myself.

[obsolete]

I'm thinking that if material are the same then it is easier to expand the structure of molecules than it is to comrpess them in on themselves and there for the ring accepts the difference.

Fucking zima drinking socks!

[Tricky Mike]

Yeah my monkey brain agrees with the easier to expand than compress logic. I tried to ask the question on a machinist forum and was dumb enough to post the background of why I was asking... got 10 different guys offering 10 different ways I *should* have done it. Only one actually tried to answer the question.

[obsolete]

Yeah my monkey brain agrees with the easier to expand than compress logic. I tried to ask the question on a machinist forum and was dumb enough to post the background of why I was asking... got 10 different guys offering 10 different ways I *should* have done it. Only one actually tried to answer the question.

So... How should you have done it?

[Pittenger5]

Sounds like NESR?

[Kurlon]

Sounds like NESR?

Did you check the brakes?

[BLACK SQUIRREL]

It would be Best to Remove The chain and wipe it down with Murrays oil soap and to ride the bike without pants

[CEO]

It would be Best to Remove The chain and wipe it down with Murrays oil soap and to ride the bike without pants

perfect

[Tricky Mike]

So... How should you have done it?

Apparently I should have used my $60,000 EDM machine to cut internal threads into the hardened shaft. I feel silly, really... I mean, it's so obvious. Everyone has EDM capabilities, right?

[Pittenger5]

I thought you were Tricky Mike? You cant build one of those out of some rebar and duct tape?

[obsolete]

Is that the one that uses the wire thread under water? My buddy has one lol.

Would there have been any way to thread it on a lathe or does the hardened metal negate that possibility?

[seth399]

Apparently I should have used my $60,000 EDM machine to cut internal threads into the hardened shaft. I feel silly, really... I mean, it's so obvious. Everyone has EDM capabilities, right?

O man, why didn't you say you needed one of those! I would have loaned you the one in my bathroom...

All joking aside though, there are standards you could by if you wanted to for press fit but again richies bike shouldn't blow up (from this mod)

[Kurlon]

Is that the one that uses the wire thread under water? My buddy has one lol.

Would there have been any way to thread it on a lathe or does the hardened metal negate that possibility?

Considering removing the threads from two holes in a cheap, chinese counter shaft sprocket could toast a brand new carbide burr, I can't imagine a thread cutter that'd last two rotations against that shaft.

[lrrs313]

Wirelessly posted (BB Tour: BlackBerry9630/4.7.1.61 Profile/MIDP-2.0 Configuration/CLDC-1.1 VendorID/105)

Obviously these guys don't realize that this is a dirt bike at heart not a frickin MotoGP bike. Tricky, that looks good to me. Probably quite a bit better than anything I would have done. Should work just fine.

[Mad Max]

Nice work, looks good.

[Tricky Mike]

I didn't machine any anti-punt into it... so should you decide to return to the world of road racing on dirty bikes (please, please )you should be able to fuck up Richie's chi as usual... You just might have to go to FL to do it, though

[Tricky Mike]

Considering removing the threads from two holes in a cheap, chinese counter shaft sprocket could toast a brand new carbide burr, I can't imagine a thread cutter that'd last two rotations against that shaft.

Exactly. A carbide auto center punch left no mark at all. That was as far as I pursued threading it... A big part of that decision was the fact that I would have had to fabricate the tooling to cut the threads on the small 8mm+/- ID of the shaft. None of my carbide stuff would fit in a hole that small. I know... that's what they all say.. I'm not opposed to machining the tooling. It works just fine for ALU, brass, mild steel, etc... I just thought it would be a waste of time for this shaft. Way too hard.