Some questions for the freewheel gurus.
1. Are Suntour Ultra 6 spaced freewheels the only 6-speed units that will fit 120 spacing, or are there any modern ramped HG-style 6-speed freewheels designed to fit 120mm spacing?
2. Are Suntour Ultra-6 freewheels evenly spaced enough (at allegedly 5.0 mm between cogs) to successfully index using Shimano 7-speed SIS shifters/RDs, (or Campy 8 speed for that matter). If not, could one even out the spacing using the right spacers? Ref: http://sheldonbrown.com/cribsheet-spacing.shtml#k7fw
I have a pile of Suntour 5-speed freewheels and a corn-cob Ultra-6, and am wondering if it's worth the hassle of making up a wider geared ultra-spaced frankencluster. I've heard that some folks have issues shifting wider geared ultras with friction, and I'm wondering if indexed shifting could do the trick.
(Yes - I know I can re-space a frame to 126, I know that plenty of folks do fine with friction, and I know I can buy a wider geared ultra-6 for $$$ on eBay, but I don't wanna do any of those things on this build for my GF.
Thanks in advance,