Hi Folks,

I have a problem with the second gear on my freewheel when both chainrings are used. It seems that all the gears will run smoothly 1-7 except when the second cog is engaged, then I get a kind-of clunking sound as though the chain is catching on something. I've checked the alignment which seems as good as it can be and as far as I can tell the frame is straight. Also it doesn't seem to be catching on the arm of the derailleur or rubbing on the front derailleur.

The components are new: new 7-speed chain, chainrings on the front and freewheel on the back. All new cables and the shifter is the old downtube friction shifter which, obviously, I can adjust incrementally to make sure all the gears run smooth. My rear dearailleur is an NOS Campagnolo Victory and seems to move fluidly and with no problems.

My hunch is this is just the crossover of the chain, but I'm a bit perplexed as to why it is just the second cog on the freewheel that seems to jitter and with both chainrings. On previous bikes I've never had this with both chainrings only the large one.

Any thoughts would be very weolcome.

Thnak you.

Gerald