Hi everyone,
I'm hoping someone can offer some insight. I recently purchased a bike with around 8,000 miles and decided to replace the chain and sprockets due to rust on the existing chain.
I ordered a front sprocket from Sprocket Center (part number JTF512-16RB), but I'm running into clearance issues during installation. The OEM sprocket fits snugly into the channel for the retaining plate, allowing it to seat fully and rotate into position so I can install the bolts. However, the aftermarket sprocket seems to be a few millimeters too thick, preventing the retainer from fitting properly.
There’s a rubber dampener on both sides of the sprocket, one with a groove that appears designed to accommodate the retainer assuming the sprocket is installed with the correct side facing out the retainer would not fit. The strange part is that if I reverse the sprocket, the retainer would fit properly, but I would need to grind down part of the rubber on the back side to make it work.and accommodate the clip
Could this sprocket be mis manufactured, with the rubber dampeners installed incorrectly? Would it be inappropriate to grind down some of the rubber on the opposite side to make it fit in reverse? Or would it be better to slightly file the retainer and install it as is? I'm hoping to avoid any potential balance or misalignment issues, as I'm unsure whether modifying the sprocket or retainer could cause unusual side effects.
Any advice or experience with this part would be greatly appreciated!
Thanks in advance.
I'm hoping someone can offer some insight. I recently purchased a bike with around 8,000 miles and decided to replace the chain and sprockets due to rust on the existing chain.
I ordered a front sprocket from Sprocket Center (part number JTF512-16RB), but I'm running into clearance issues during installation. The OEM sprocket fits snugly into the channel for the retaining plate, allowing it to seat fully and rotate into position so I can install the bolts. However, the aftermarket sprocket seems to be a few millimeters too thick, preventing the retainer from fitting properly.
There’s a rubber dampener on both sides of the sprocket, one with a groove that appears designed to accommodate the retainer assuming the sprocket is installed with the correct side facing out the retainer would not fit. The strange part is that if I reverse the sprocket, the retainer would fit properly, but I would need to grind down part of the rubber on the back side to make it work.and accommodate the clip
Could this sprocket be mis manufactured, with the rubber dampeners installed incorrectly? Would it be inappropriate to grind down some of the rubber on the opposite side to make it fit in reverse? Or would it be better to slightly file the retainer and install it as is? I'm hoping to avoid any potential balance or misalignment issues, as I'm unsure whether modifying the sprocket or retainer could cause unusual side effects.
Any advice or experience with this part would be greatly appreciated!
Thanks in advance.