WM-3 DID Rim Question

[imported_n/a]

I found an NOS WM-3 DID 36-hole 18-inch rim that was drilled for a full-width hub.  I compared it to the rear steel rim on my '72 Six Day, which is much narrower.  My question is:  Will a WM-3 rim with a 4.00 knobby on it have clearance problems with the chain guard and even the swingarm?  Does anybody have any experience in this regard?

Thanks.  Glenn

 

[Randy Kirkbride]

Glenn,
My 75 Six Days came with a WM-3. I know the swing arms are different but I can measure mine tonight and let you know what it measures on the inside. There is no wear on the swing arm from the tire but there was a little on the chainguard brackets. Hope this helps.

 

[imported_n/a]

Thanks, Randy.  I think I'll be lacing it up to use for the upcoming season.

Glenn

 

[Doug Wilford]

Glenn; Your combination will work okay, just make sure you align the rim with no wobbles. It is going to be a very close fit but it should work.  The worst that can happen is you may need to trim off the edges of the knobs on that side of the tire.

 

[imported_n/a]

Thank you, Doug.  I will carefully lace and true the rim.  

I remember, a long time ago, when I put DID's on my '73 Jackpiner, I used sheet-metal screws and not rim locks, and never had a problem.  Do you have any suggestion on how deep into the tire the screws should stick to work, so I can get the proper length screws?

Glenn

 

[Randy Kirkbride]

Glenn,
I measured the swingarm last night. From the back of the chainguard to the other side of the swingarm is 130mm. I had just a few rubbing marks on the chainguard & brackets. I think you're OK if you have the same distance.

 

[imported_n/a]

Thanks, Randy and Doug.

Glenn