This is on a nearly all-original 1972 chrome Paramount, so I don't really want to change the original 52-42 chainrings. Besides, I need the lowest practical gear, so I want the 42T ring, which would require a 47T large for a 5T spread, which would look REALLY non-original. I'm sure the original FW wasn't 14-31, so changing to a 14-28 would be at least be closer to original.
I presume a FW vice helps in cog removal. The one I'm familar with, Bicycle Research I think, clamps in a bench vice and has two short chains that wrap the large cog, or in this case one of the the other cogs, since I'll be removing the large cog. Anyone know of another type that works better?
Regards,
Jerry Moos
HM & SS Sachs <sachs@erols.com> wrote: Jerry Moos posted:
Speaking of Regina FW's, anyone know a source for a 28T inside cog? The cogset I salvaged from the trashed body last weekend turns out to be well spaced for my use except that the inside 31T needs to be changed to a 28T, about the most an NR RD can be made to handle.
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Two observations, Jerry -
1) Getting the inside cog off, particularly a large one, can be quite difficult - even when you remember that it has LH threading. Lot more lever arm there for tightening it up while riding than on the other end (13 or 14), and time takes its toll, too. I had one go wavy not too long ago.
2) We have used 13-31 quite successfully with a NR and a half-step chainring set-up. Indeed, my Beloved Spouse's bike still has that, with a 40/45 front split. She has not found it a problem to be limited to a 93 top gear.
your mileage may vary
harvey sachs