Originally Posted by
Jeff Wills
Yes, in theory the 38-tooth cog would fit a New Winner Pro freewheel body making a 12-38 Ultra-7 or 11-38 “Regular” 6-speed possible. Not that I ever tried that…
(Pastor Bob- have you ever seen a 11-tooth NWP “Z” cog? It was on the cog board but I can’t remember seeing one for real.)
I might have a 11T Z in my collection. I'll need to check.
The challenge you would face is that the gearing jumps would not work out very well. For instance, the 11T only threads into a 12T or a 13T, which only threads into a 14T or maybe a 15T (IIRC). So three of the 6 or 7 sprockets would be used up going from 11-15. That only leaves 3 more to reach the 38T. Can you imagine a 11-13-15-20-28-38? Theoretically on a 7-Speed New Winner, Winner, Winner Pro, might add a 24T to the mix, but you'd have to find the 24T that fits above the two A sprockets.
Originally Posted by
RiddleOfSteel
And here we think that gravel bike gearing and mountain bike gearing just before that was extreme and required immensely capable rear derailleurs. It was already made!
When I lived in NH I went gravel grinding all the time on my '71 Paramount. And that was waaayyyy before the current craze was born.
Here is how I set up my Ultra spaced Perfect with the 38T.
And yes! I could shift to both the BIG-BIG and the little-little combos and not worry about the RD exploding.
Originally Posted by
ThomasOmalley
Chain guard huh? Is that what this weird piece is?I was wondering if it was a six speed and missing a gear or an unusual locking ring. Do I need a special tool to take it apart?
I’m really glad you say they fit on other Suntour bodies. This one spins pretty horribly. I’ve started hoarding “perfect”s and would like to build a custom freewheel like yours someday.
The two smaller notches on the outside of the retaining ring (next to the 14T sprocket) act the same a the two divot holes on a Perfect or ProCompe. Remember that the threads are reversed, so using a punch, hit a notch clockwise until it loosens.
IIRC, I tried to mount 6 sprockets to this body using 6-speed ultra spacers and it was a no-go.