Inverted fork question....help???

[stubbie1111]

I am using a set of cr125 inverts, but the axle on my 85-86r (as you guys are aware of) screws into one side of the forks...... What axle, spacers, etc do i use to get this to fit the inverts? It uses a straight through axle? Any help you guys can provide about what you did for your bikes would be really appreciated.

[Red Rider]

The way I saw it, there were 2 ways to attack this dilemma:
1. A custom axle that combines the proper diameter of the ATC's axle with the proper ends to attach to the CR's forks.
2. Use the stock axle and modify it as necessary to attach to the CR's forks.

When I did my inverts, I used option #2, and made an insert that slides into the left fork leg, and is clamped down via the fork's clamping bolts. The inside of the insert is threaded so the axle screws into it, much like the stock forks.

[stubbie1111]

What did you make the insert from?


the way i saw it, there were 2 ways to attack this dilemma:
1. A custom axle that combines the proper diameter of the atc's axle with the proper ends to attach to the cr's forks.
2. Use the stock axle and modify it as necessary to attach to the cr's forks.

When i did my inverts, i used option #2, and made an insert that slides into the left fork leg, and is clamped down via the fork's clamping bolts. The inside of the insert is threaded so the axle screws into it, much like the stock forks.

[Red Rider]

6061 aluminum rod, then turned down to the appropriate size on a lathe.

[Red Rider]

Stubbie, no matter which method you choose, keep this in mind: The weakest part of the axle is where the threads are cut.

If you look at the stock axle setup on the 250R, the axle isn't threaded the entire width of the fork leg, that it screws into. It is only threaded about 2/3 of the width. Due to this design feature, you have the full diameter of the axle supporting the impacts that the front suspension is subjected to.

If the axle was threaded the entire width of the fork leg, the axle would be prone to failure in between the hub & fork leg, right where the threads ended.

[stubbie1111]

I understand..... I spoke with a few different individuals and they all said talk to Jason Hall as he sells adapter kits for this exact thing so you can use your stock axle..... I sent him a PM and he never replied to me..... If you have a contact number for him... can you please have him call me at 360-970-9054.
Thanks,
Kevin