Shimano LP-20 Square BB Drive Side Plastic Cup
Posted: 24 Oct 2020, 11:42am
I've just stripped a 1994 MTB with an FC-MC30 STX chainset and discovered an LP20 BB with the plastic cup on the drive side.
Never seen one like this before, the plastic cups are generally found on the non-drive side, unless it's an FAG with them on both sides.
Can I replace it with a standard flanged metal drive side BB or does the FC-MC30 STX chainset require this LP20 type?
https://si.shimano.com/pdfs/ev/EV-BB-LP ... -1243B.pdf
It appears to be an odd convention, any idea why Shimano did this?
Never seen one like this before, the plastic cups are generally found on the non-drive side, unless it's an FAG with them on both sides.
Can I replace it with a standard flanged metal drive side BB or does the FC-MC30 STX chainset require this LP20 type?
https://si.shimano.com/pdfs/ev/EV-BB-LP ... -1243B.pdf
It appears to be an odd convention, any idea why Shimano did this?