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.

Step Two:

With the movable face-plate separated, remove the bottom gasket. You will now want to decrease the distance between the bottom of the pin's travel-hole and the groove that holds the bottom gasket. Doing so will allow the movable face-plate to move farther away from fixed face-plate. IT'S IMPORTANT TO DO THIS EVENLY ON BOTH SIDES. I would also not recommend breaching the top of the groove for the bottom gasket.

20171102_003928.jpg

To make the modifications, I used a series of Dremal tools and files. Note that this is HARDENED STEEL, and may produce splinters during cutting; wear googles.

Step Three:

Clean the parts, apply lubricant, and reassemble. You may notice that the top of the movable shaft and it's collar now eclipse the top of the fixed shaft (i.e. the face that the clutch rests on, excluding the protruding threads). This must be brought level.

20171103_214436.jpg

Remove the seal from the movable shaft. You will need to both reduce the height of the uppermost rim (so that it sits flush with the fixed shaft when assembled) AND increase the depth of the groove that seal sits in accordingly. I used a lathe to do both, but this could also be done with a Dremal. I've also heard that the top of the seal can be shaved/sanded down, but have not attempted this.

Step Four:

Reassemble and ensure everything works properly. I installed a Stage6 clutch (which I can't speak well enough of), which is narrower than stock. If you are using stock (or something similar) IT MAY BE NECESSARY TO SHAVE THE REAR-FACING RIM OF THE MOVABLE-FACE. You MUST do this if it comes into contact with the clutch arms (and is highly recommended if it has the potential to touch any part of the clutch).

Results:

By increasing the travel distance by 1.2mm, I was able to sink my belt just over 5mm lower into the pulley. While not having road-tested this yet for actual speed, I'm sitting right at the top (maybe a mm over) of my variator, and just above the bottom of the pulley.

2.PNG
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