Re: NU50: Modification of the Rear Pully

alex ganz /
This single post is part of a larger thread. Start from the top or view this post in context.

Hahaha, you so crazy.

Also, I did wind up cutting the angled guides, and am pleased with the results. I did a very quick comparison on my bolt-on-upgrades bike, and it does seem a tad easier to keep the angled-pulley in the band. The most notable difference (as one might expect) comes when you blast from dead-stop to balls-upon-walls (a mighty 40mph on my beater-bike :D ), then settle down to cruise; definitely less of the CVT-gone-wild feel near the top, and on deceleration. Not that it's unmanageable sans the angle - though it sounds a lot easier on the engine than the straight-cut.

Things to note if you try this: 1. The steel that needs to be cut is hardened; take your time. Wear gloves. Clean up using the magnet / sheet-o-paper trick. 2. Precision is important (i.e. the guides must always be parallel); I used a lathe to trace the pattern before cutting with a drill press + rotary tool. If you don't have access to such equipment, maybe look at the GY6 option CW mentioned above (in fact, look at it regardless - it'll get you to the same place with a lot less pain).

Finally, for those interested, I used a consistent (i.e. straight) 38 degree angle. Cutting a dual-angle set-up was tempting, but didn't want to risk error. I also angled the cuts in the same direction as Malossi and every other manufacturer (i.e. so that the movable face turns in the direction of motion when contracting). I'm curious as to whether this makes a difference.

This single post is part of a larger thread. Start from the top or view this post in context.
Subject Written By Posted
  NU50: Modification of the Rear PullyTopic by: alex ganz alex ganz 11/07/17 02:48PM
  Re: NU50: Modification of the Rear PullyRe: alex ganz alex ganz 11/07/17 02:50PM
  Re: NU50: Modification of the Rear PullyRe: #CrazyWayne™ rocks. #CrazyWayne #CrazyWayne™ rocks. #CrazyWayne 11/07/17 03:38PM
  Re: NU50: Modification of the Rear PullyRe: alex ganz alex ganz 11/07/17 06:30PM
  Re: NU50: Modification of the Rear PullyRe: Mike Boyd Mike Boyd 11/07/17 10:10PM
  Re: NU50: Modification of the Rear PullyRe: #CrazyWayne™ rocks. #CrazyWayne #CrazyWayne™ rocks. #CrazyWayne 11/08/17 03:28AM
  Re: NU50: Modification of the Rear PullyRe: alex ganz alex ganz 11/08/17 07:02AM
  Re: NU50: Modification of the Rear PullyRe: alex ganz alex ganz 11/08/17 11:45AM
  Re: NU50: Modification of the Rear PullyRe: Crazy Wayne Crazy Wayne 07/07/18 05:54PM
  Re: NU50: Modification of the Rear PullyRe: Ryan . Ryan . 11/11/17 12:44PM
  Re: NU50: Modification of the Rear PullyRe: alex ganz alex ganz 11/12/17 11:40PM
  Re: NU50: Modification of the Rear PullyRe: alex ganz alex ganz 07/09/18 11:43AM
  Re: NU50: Modification of the Rear PullyRe: Crazy Wayne Crazy Wayne 07/09/18 01:07PM
  Re: NU50: Modification of the Rear PullyRe: - Joe - - Joe - 07/10/18 08:55AM
  Re: NU50: Modification of the Rear PullyRe: Crazy Wayne Crazy Wayne 07/10/18 11:27AM
  Re: NU50: Modification of the Rear PullyRe: Shawn Manthey Shawn Manthey 07/10/18 06:15PM
  Re: NU50: Modification of the Rear PullyRe: Captain Janeway Captain Janeway 07/10/18 06:30PM
  Re: NU50: Modification of the Rear PullyRe: Crazy Wayne Crazy Wayne 07/10/18 06:57PM
  Re: NU50: Modification of the Rear PullyRe: Shawn Manthey Shawn Manthey 07/30/18 10:02PM
  Re: NU50: Modification of the Rear PullyRe: Shawn Manthey Shawn Manthey 07/10/18 07:28PM
  Re: NU50: Modification of the Rear PullyRe: Crazy Wayne Crazy Wayne 07/10/18 07:38PM
  Re: NU50: Modification of the Rear PullyRe: Captain Janeway Captain Janeway 07/10/18 08:15PM
  Re: NU50: Modification of the Rear PullyRe: Crazy Wayne Crazy Wayne 07/10/18 08:31PM
  Re: NU50: Modification of the Rear PullyRe: Captain Janeway Captain Janeway 07/11/18 11:53AM
  Re: NU50: Modification of the Rear PullyRe: alex ganz alex ganz 07/10/18 08:03PM
  Re: NU50: Modification of the Rear PullyRe: Shawn Manthey Shawn Manthey 07/10/18 10:19PM
  Re: NU50: Modification of the Rear PullyRe: Crazy Wayne Crazy Wayne 07/10/18 10:33PM
  Re: NU50: Modification of the Rear PullyRe: alex ganz alex ganz 07/11/18 12:51PM
  Re: NU50: Modification of the Rear PullyRe: Crazy Wayne Crazy Wayne 07/11/18 01:13PM
  Re: NU50: Modification of the Rear PullyRe: alex ganz alex ganz 07/11/18 01:35PM
  Re: NU50: Modification of the Rear PullyRe: Crazy Wayne Crazy Wayne 07/11/18 01:44PM
  Re: NU50: Modification of the Rear PullyRe: Captain Janeway Captain Janeway 07/11/18 03:17PM
  Re: NU50: Modification of the Rear PullyRe: alex ganz alex ganz 07/31/18 12:17PM
  Re: NU50: Modification of the Rear PullyRe: Jack Rutherford Jack Rutherford 12/09/18 09:11AM
  Re: NU50: Modification of the Rear PullyRe: Jack Rutherford Jack Rutherford 10/03/20 04:52PM
  Re: NU50: Modification of the Rear PullyRe: Doug Wilhelm Doug Wilhelm 10/12/20 12:38PM
  Re: NU50: Modification of the Rear PullyRe: Jack Rutherford Jack Rutherford 10/12/20 07:24PM
  Re: NU50: Modification of the Rear PullyRe: Jack Rutherford Jack Rutherford 10/14/20 10:06PM
  Re: NU50: Modification of the Rear PullyRe: Jack Rutherford Jack Rutherford 10/17/20 06:15PM
  Re: NU50: Modification of the Rear PullyRe: Jack Rutherford Jack Rutherford 10/29/20 02:13PM

Want to post in this forum? We'd love to have you join the discussion, but first:

Login or Create Account