On 2/13/2018 1:37 PM, Emanuel Berg wrote:
AMuzi wrote:

Which is superior and good engineering for
that overly torqued inner ring hardware.

What is the superior way to keep the chain
straight on tandem bikes?

I once saw a small chainwheel, slightly bigger
than an RD pulley wheel, in a vertical track,
so it could be adjusted up/down to interfere
with the chain.

This made sense to me, maybe because
I understood it, but I have since then seen
modern tandems and they don't have it.


Sure, many drive formats.

What I meant is that bolts should be in shear to the extent
possible. A stack of spacers under a bolt leads to bent bolts.

--
Andrew Muzi
www.yellowjersey.org/
Open every day since 1 April, 1971