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About mcman56

  • Rank
    Advanced Member
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  • Bike
    Evo 300 Factory
  • Club

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  • Location
    N California
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  1. I had a Fantic 80 with a swingarm pivot shaft that would not come out. I tried heat and anti rust solvents but in the end had to resort to a hydraulic press. As I remember the pivot inner races had rusted to the shaft. The rest of the bike was rust free.
  2. I run X ring chains and they last forever. They are not as wide as o-ring. V-mar makes a nice wide chain guide. A little trimming can make a standard guide work also. On my Rev 3, I had to put the master link clip towards the inside to avoid it touching the brake pedal
  3. Galfer pads feel the same. The Jitsie race pads are marked Goldfren on the back. I tried putting putting a 2008 Rev 3 rear wheel on my Evo. The disk is a little bigger, 3/16" or maybe 1/4" bigger in diameter. I could get the axle in but the disk drags on the caliper. I could not see if the Evo pads could take advantage of the larger disk. See the comparison pictures. Rev 3 pad also have more area.
  4. DS80. Newer models are called JR80. They have a solid reliability reputation.
  5. Dan - Are you saying the jump comes after the throttle burst? I'm trying to do it at the same time. Actually, I'm trying to compress the front wheel on the obstacle, hit the throttle and jump all at the seem time. Although, there are a number of things that have to happen in a short time period so what I'm actually doing may be somewhat different.
  6. I see that some riders can get a very quick almost explosive jump up from the pegs when unloading. When I attempt, it feels kind of slow and mostly like I'm compressing the rear suspension rather than pushing my body up quickly. Does this imply that my timing is off...maybe too early? I get some lift but not as much as I would like. I'm 155 lbs if that makes a difference.
  7. Beta USA does list a 2017 improvement as: New rear brake pump: provides a more powerful yet progressive rear brake feel. Did they change bore size or just brands?
  8. Who sells Goldfren S33 and is in or ships to the US?
  9. Fluid has been flushed and pads are new. Original pads felt the same. A friend with a 2016 beta has the same rear disk and also complains the brake is weaker than his gas gas
  10. I have a 2014 factory model beta. The rear brake has always seemed weak. I got a ride today on a 2017 factory model and the brake felt much much better....much stronger yet just as easy to control. Visually, the main difference is the NG brake disk which has less cut out area so more friction area. Has anyone tried installing the NG disk on a 2014 or anything else to improve brake power? The other difference I noticed was that the metal backing plate of the pads was sort of a bright brass colour. Mine are sort of a dull colour. I think they mine are the Jitsi race pads but the originals felt much the same.
  11. My seat of the pants guess or maybe soles of the boots guess is that trials bikes max out around 6000 rpm, maybe less. That is why they feel "softer" with lower gearing...if it gets away from you, it runs out of rpms fairly quickly.
  12. The sprocket spacer is 0.326 inches. It has a step to center on the wheel and another step to center the sprocket. Extra wheel spacer on the sprocket side is 0.233". The disk spacer is 0.198". It has a counter bore on the wheel side because the GG wheel has a little step on that side. Extra wheel spacer on the disk side is 0.147".
  13. I was wondering id you had the part number of the wp seal you used for your sherco shock rebuild? I was hoping to do the same thing.


    Chris Vorderstrasse

    1. mcman56


      I bought the parts from Moto Pro so the part number may be theirs.   They used to list parts with sizes on their web site but that is gone.  The guy I talked to at the time was very helpful.  The bushing was 14 x 10.

      looks  like X ring QR14

      14 mm quad ring for WP


  14. Do you just want thickness or detailed drawings?
  15. Do you have any idea what kind of forks and wheels it has? Are they little drum brakes or disks?