Originally Posted by
Bruce Enns
Also, my 1981 model does NOT have the knurled edges on either side like yours, and I'm not quite sure why there would be a difference in manufacturing being we each have the same bolt design. Where you have the knurling, my bike has nicely rounded and painted edges. Could be the 1982 version used a different style bolt.
I had a feeling that would become confusing. The knurled ridges are from the aftermarket bolt I picked up at an LBS. It grabs the seat post housing for the binderbolt from the outside and created those impressions in the paint.
I'll try your idea with the washer. And probably use some blue loctight. Gorgeous restoration, BTW
My '84 Miyata 210M has a notch that aligns with the nut inside the housing and holds it in place while tightening. It's really the only feature on what's otherwise a fairly low-end Miyata design.
Thanks guys,
-Michael