anyone know a good machine shop

[off road rider]

Im in need of yet another custom shaft, seems I have gotten the shaft the last two times on this project.
Anyone know of a good local (WWa) machine shop capable of turning a 4340 shaft and through heat treating??
Thanks

 

[rmkboxer]

Im in need of yet another custom shaft, seems I have gotten the shaft the last two times on this project.
Anyone know of a good local (WWa) machine shop capable of turning a 4340 shaft and through heat treating??
Thanks

I would call fastrax and see if they know someone

 

[4Z]

I would call fastrax and see if they know someone

X2.. Give Curt/Justin a shout big D!!!

 

[turbo99]

J and D hyd.

talk to Terry
There in auburn WA

 

[off road rider]

Thanks guys...

 

[summit800]

there use to be a shop in edgewood , fab craft

 

[TWARD700]

Try Western machine works

Sent from my DROIDX using Tapatalk

 

[Chris the sled guy]

I work at one in Kirkland It's called Jemco Inc.
How hard are up treating the 4340?
Are there splines or threads?

 

[turbo99]

Try Western machine works

Sent from my DROIDX using Tapatalk

i tried to throw you a bone Terry!

 

[off road rider]

I work at one in Kirkland It's called Jemco Inc.
How hard are up treating the 4340?
Are there splines or threads?

The shaft is approx 1.5 ft long 1.25 dia with a step down on both ends and center to 1.000 keyways at both ends thru hardened to approx 44 to 50 Rockwell.
I dont know a ton about the hardness, but see thats what most aftermarket 4x4 axles are built to..
Ive broke 2 of the chrome alloy custom shafts in the last year, takes out both clutches and my pipe. Not to mention kills a great weekend.
any suggestions??

 

[modsledr]

I'm curious about the application?

Something to consider...harder is not always better (can't believe I just typed that...lol).

If the shaft is prone to flexing, then harder might not be the answer. Is a center bearing a possibility?

Just thinking out loud...good luck!!

The shaft is approx 1.5 ft long 1.25 dia with a step down on both ends and center to 1.000 keyways at both ends thru hardened to approx 44 to 50 Rockwell.
I dont know a ton about the hardness, but see thats what most aftermarket 4x4 axles are built to..
Ive broke 2 of the chrome alloy custom shafts in the last year, takes out both clutches and my pipe. Not to mention kills a great weekend.
any suggestions??

 

[off road rider]

I'm curious about the application?

Something to consider...harder is not always better (can't believe I just typed that...lol).

If the shaft is prone to flexing, then harder might not be the answer. Is a center bearing a possibility?

Just thinking out loud...good luck!!

Its a custom snowhawk. the shaft breaks at the transition to the downsized clutch dia.. Previously the shaft was made from 4140 and not heat treated.
I was also unhappy with the transition at this point..It should be a nice radius not a small 1/16 rad..
I'm thinking getting something like spring steel would be the ticket or at least like an aftermarket 4X4 axle..
I definatly dont want something to hard..

 

[Chris the sled guy]

S7 might be a better option than 4140 heat treats real nice and is very tough.
A lot of shafts in the heavy equipment industry use this tool steel.
A 1/4 rad at the transition would help a great deal.
I don't think you need to go over 45 r/c on any of the tool steels.

 

[off road rider]

S7 might be a better option than 4140 heat treats real nice and is very tough.
A lot of shafts in the heavy equipment industry use this tool steel.
A 1/4 rad at the transition would help a great deal.
I don't think you need to go over 45 r/c on any of the tool steels.

Thanks Ill look into that. I was planning on going with 4340 and threw heat treating. If this happens again There will be a nice bonfire on the mountain..
get your hotdogs ready..

 

[snowhawkaddict]

He said shaft...

http://www.youtube.com/watch?v=CHbYLjWEEQA

I've seen you build things alot more complicated then that?