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Shims on this folding stem?

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Shims on this folding stem?

Old 02-15-20, 12:06 AM
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Shims on this folding stem?

I ordered a folding stem from Chiner and they sent me the wrong slider, It was 1.1-1.2 mm too small. I filed a dispute hoping they would send the right part, but 15 minutes after I submitted it, Aliexpress ruled in my favor and gave me a refund and said keep it. Huh. I would have rather had them send me the right top piece. It's all aluminum, by the way.

I bought a seatpost shim in the closest size, but it wasn't enough. I added a layer of adhesive alumiunm foil, but still not enough. After reading the accompanying post about the Rad City seat post cracking off, I added soda pop aluminum, which did the trick. Snug as a bug. And since this isn't carrying the full weight of a rider, I also won't raise it much more than waht's shown in the picture. I think it will work.

I'll defer to experts though. Folding bikes have their foibles. I don't want to be become infamous as the guy who snapped off his handlebars.

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Old 02-15-20, 10:41 AM
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I have shimmed stems on non-folding bikes by as much as a tin can's worth. I consistently shim seatposts wit aluminun cans and even slices of plastic water bottles. I weigh in the neighborhood of 190 lbs
one general tip for when the exact hub cone is not readily available. discovered that the curvature of the bearing surface on the shimano 600 was a pretty good "skeleton key" for many applications. it would sometimes require a small change in ball size to make everything come out correctly.
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