Joined: Jul 2015
Posts: 7,496
Likes: 3,300
From: NW Oregon
Bikes: 1982 Trek 930R Custom, '91 Diamondback Ascent w/ XT, XTR updates, Fuji Team Pro CF road flyer, Specialized Sirrus Gravel Convert, '09 Comencal Meta 5.5 XC, '02 Marin MBX500, '84 Gitane Criterium bike
my advice is to give up on modifying the freewheel, and go find a cassette hub/wheel that will accept an 8 speed cassette.
i'd search the local community bike shop, or Craigslist, for a decent used 8 speed wheel and cassette.... and then recenter the hub /wheel to 130mm O.L.D. (Outside Locknut Dimension), or even the 128mm your frame has... and even an aluminum frame can be reset a couple of millimeters...... steel frame ? no problem resetting it to 135mm.
freewheels have specific sprocket thread diameters that are not the same as a cassette, btw... so the spacer rings from a cassette will not fit.
used cassette wheels are about 25 bucks and up, depending on quality...
Last edited by maddog34; 07-04-17 at 12:16 PM.