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Old 04-26-2013, 02:44 PM   #1
R-dubb OP
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Gotta question about wheels

I'm trying to marry a snowflake wheel and a new style fork with 25mm axle.

Is it possible? I can have an axle and/or spacers machined. But fitting a 25mm axle through an 17mm hole is a different kind of trick.

R-dubb screwed with this post 04-26-2013 at 03:37 PM Reason: correct size
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Old 04-26-2013, 02:59 PM   #2
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Quote:
Originally Posted by R-dubb View Post
I'm trying to marry a snowflake wheel and a new style fork with 25mm axle.

Is it possible? I can have an axle and/or spacers machined. But fitting a 25mm axle through an 18mm hole is a different kind of trick.
What's the OD of the wheel bearing? See if you can find a different wheel bearing with the same OD and 25mm ID.
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Old 04-26-2013, 03:38 PM   #3
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There's no such thing as a new question on this site

http://www.advrider.com/forums/showthread.php?t=827359
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Old 04-26-2013, 04:03 PM   #4
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Looks like I'm barking up a tree.

Closest size in a sealed ball bearing is 25x42x9.
Roller bearing (non-tapered) is 25x42x17.

Also mentioned is difficulty matching up rotors, but I do have some K bike rotors milling about. Bigger is better, if I can get the alignment worked out. Maybe more work than it's worth.
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Old 04-26-2013, 06:55 PM   #5
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Make up a sleeve.
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Old 04-27-2013, 10:22 AM   #6
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Something like this :

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Old 04-27-2013, 11:03 AM   #7
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Edray, here on the site did this on his R100S. He used late model inverted GSXR forks, and brakes on his snowflake wheels. This required using the original dia. axle, then machined spacers that fit the forks. Then spacer discs for the rotors, to make for proper spacing. He also re drilled the rotor hole spacing.
This last step can be avoided, by using Ducati, or Yamaha FZR rotors (not sure what years, etc).
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Old 04-27-2013, 07:48 PM   #8
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Sorry I was in a rush this morning! Here's a link to Edray's build.
Modern retro build
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Old 04-28-2013, 03:55 PM   #9
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Quote:
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Sorry I was in a rush this morning! Here's a link to Edray's build.
Modern retro build
What a great thread! You do some fine work.

Yes, the snowflakes look great in black. Those caliper brackets look good too. I'm still moving in about four directions at the same time. Thanks for the tips.
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Old 04-29-2013, 02:45 PM   #10
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yes, the snowflakes look great in black
+1
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Old 04-29-2013, 06:34 PM   #11
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+1
+2
They look so good, when I first opened that thread, I thought they were spoked wheels. Very nice!
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Old 04-30-2013, 08:15 AM   #12
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Yes this is possible. I did this to Andy Goldfine of Aerostich's R80G/S just before he and Helge Petersen did their China and Russia trip many years ago.
The parts I started with were a R100GS front end and the R80G/S wheel. These both have the same axle and wheel bearings as your application. You need to machine a spacer for the fork legs and for the axle and if I remember correctly it was easier to use a rear axle from any drum brake post 1970 model as they are a little bit longer than the 1975-84 17mm front axles.
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Old 04-30-2013, 06:49 PM   #13
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The parts I started with were a R100GS front end and the R80G/S wheel. These both have the same axle and wheel bearings as your application. You need to machine a spacer for the fork legs and for the axle and if I remember correctly it was easier to use a rear axle from any drum brake post 1970 model as they are a little bit longer than the 1975-84 17mm front axles.
Perfect timing, I'm thinking about doing this! Is the spacer in the fork split, so that the fork can clamp on the axle?

Thanks!
Jeff
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Old 04-30-2013, 07:18 PM   #14
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Originally Posted by mendoje View Post
Perfect timing, I'm thinking about doing this! Is the spacer in the fork split, so that the fork can clamp on the axle?

Thanks!
Jeff
It couldn't hurt.You could also add a step to it so it stays in place.
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Old 04-30-2013, 07:25 PM   #15
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Perfect! Dont want to hijack this thread, so PM sent on one last question regarding R80G/S wheel + R100GS forks.
Thanks! Jeff
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