SamStoney

Changing the seals on my (I think) Supertrial, which has nonadjustable 36mm upside down forks; I can’t find a spec for oil anywhere, which isn’t surprising for this model. I’m guessing 5wt, and I can guess at the level based on current level, but if love to have a real reference to work from. Suggestions?

Thanks. I found brake pads, and the seals look OK to reuse. I’m going to try to design/3d print dust covers which may or may not work, but if I keep everything clean, I should be able to get some more life out of this. Sam

Wow - I think you got it! Lucky me - the PO replaced the relatively uncommon rear brake with an even *more* uncommon one. 🙂 now, where to find seals…and a new rear disc too. Knowing what it came off of might help a lot - thanks! sam

OK, it’s obviously Grimeca, but what did it come from and where can I get pads and seals? It came off my well-used Beta TR35, at least that’s what I think it is after a lot of research. But I can’t find any reference to a 4 piston caliper/mount combo like this on *any* Beta parts list from the 88 to 92 era, at least. It fits my (steel) swingarm like it was made for it. The pistons measure 25 and 22m. Everything is in good shape except for the dust seals, which have completely disintegrated. Short term I can reassemble w/o them, but I’d much having them there, obviously. thanks for any pointers, Sam