I’m trying to find out what size the bearings are on my old 24" track monster. I got this thing when it went on clearance sale early in 2011. Doesn’t even have brake mounts. Uses a seat tube spacer, 160mm cranks, had a street seat with it. Reinforced hub, other than that I don’t know anything else about it. Having trouble finding anywhere with information on this older model.
Here’s some old photos of what it looked like before I had my way with it (second set of pictures) The red trimmed seat on the 20" was originally on the track monster.
if the cranks are cotterless the bearing will be 40mm. If it is isis or splined the bearings will be 42mm - this is due to the fact that the isis axle is actually wider than the cotterless axle requiring thicker bearings.
The cranks look like they are isis but i cannot be sure
The old koxx ISIS uses a shim and a 42x25x12mm bearing instead of the standard unicycle ISIS bearing which is 42x22x12mm.
These bearings are really rare and to be honest, crap. It is better to remove the shim (or cut it down) and replace the bearings with standard unicycle ISIS ones with a thin spacer behind it.
Well I’m planning on getting a new frame soon. Thats what the real point of this thread was. I’d have to get new bearings then when I get a new frame no?
It’s got the original POS frame that came with it, it has so many big dents in it.
I don’t quite understand the measurements on bearings. The larger number is the diameter of the ring, but which one is the thickness? And what is the other measurement?