hollowgram vs hollowgram SL
are the interfaces between bb spindle and spiders the same? are there any differences other than weight?
i think its only in the arms and its only weight difference.
The SL is lighter mostly because of the arms but the spider lockring is lighter too as well as the bolts that fix the arms to the spindle. The spindles use the same interface and the spiders are interchangable too between both versions. I'm not 100% sure if the bolts are though. Just as a note, the spider is not attached to the spindle directly, it is attached to the crankarm and that arm attaches to the spindle.
I for exemple, have the SL arms, spider lockring but I have an older, shorter spindle and an older spider to fine tune the chainline.
many thanks for advice... :-)~