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R-dubb 04-26-2013 03:44 PM

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.

Airhead Wrangler 04-26-2013 03:59 PM

Quote:

Originally Posted by R-dubb (Post 21275580)
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.

R-dubb 04-26-2013 04:38 PM

There's no such thing as a new question on this site :norton

http://www.advrider.com/forums/showthread.php?t=827359

R-dubb 04-26-2013 05:03 PM

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.

bmwrench 04-26-2013 07:55 PM

Make up a sleeve.

Prutser 04-27-2013 11:22 AM

Something like this :

https://lh6.googleusercontent.com/-B...3/IMG_1147.JPG

Houseoffubar 04-27-2013 12:03 PM

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).

Houseoffubar 04-27-2013 08:48 PM

Sorry I was in a rush this morning! Here's a link to Edray's build.
Modern retro build

R-dubb 04-28-2013 04:55 PM

Quote:

Originally Posted by Houseoffubar (Post 21283007)
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.

Ras Thurlo 04-29-2013 03:45 PM

Quote:

Originally Posted by r-dubb (Post 21287623)
yes, the snowflakes look great in black

+1

mendoje 04-29-2013 07:34 PM

Quote:

Originally Posted by Ras Thurlo (Post 21294812)
+1

+2
They look so good, when I first opened that thread, I thought they were spoked wheels. Very nice!

bmweuro 04-30-2013 09:15 AM

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.

mendoje 04-30-2013 07:49 PM

Quote:

Originally Posted by bmweuro (Post 21300273)
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

bmweuro 04-30-2013 08:18 PM

Quote:

Originally Posted by mendoje (Post 21304844)
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.

mendoje 04-30-2013 08:25 PM

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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