Author Topic: Cush Drive question  (Read 3616 times)

Offline JoeW

  • Gaggle Hero
  • *****
  • *
  • Posts: 2495
    • The Guzzi Doctor
Cush Drive question
« on: July 02, 2015, 03:44:07 PM »
I'm putting together a convert for a customer. I usually take the cush drive apart for inspection and lubrication. This drive is missing half of the rubber wedges. The owner of the bike claims he read to do this in Guzziology. I looked and Dave does say that Lamers does this. I've never heard of this modification. What's the consensus out there? All wedges, half of the wedges, softer late style wedges, drill holes in the wedges?????
Joe Walano

Online Wayne Orwig

  • Gaggle Hero
  • *****
  • *
  • Posts: 14019
    • Hog Mountain weather
  • Location: Hog Mountain
Re: Cush Drive question
« Reply #1 on: July 02, 2015, 03:47:46 PM »
I tried the 'take half of them out'. And I tried the drilling holes in them. (on a 1994 Cal 1100).
I the end, the hub started to wear a lot because it was moving around so much under that big C clip. So I put everything back as solid as I could get it. Never noticed any difference.
Scientist have discovered that people will believe anything, if you first say "Scientists have discovered...."

Offline pehayes

  • Gaggle Hero
  • *****
  • *
  • *
  • *
  • *
  • *
  • Posts: 4731
    • Falcone Touring
Re: Cush Drive question
« Reply #2 on: July 02, 2015, 03:56:48 PM »
All the wedges, but with some holes.  Don't use a drill bit.  Use a hollow tube with a sharpened edge to 'bore' the hole.  A drill bit will tear too much rubber.

Patrick Hayes
Fremont CA

Offline rodekyll

  • Gaggle Hero
  • *****
  • Posts: 21218
  • Not my real name
Re: Cush Drive question
« Reply #3 on: July 02, 2015, 04:12:50 PM »
I prefer all the rubbers replaced with new, soft ones and holed with a 1/4" hollow bit in some sort of pattern.


A Convert is the least needing of cush.  It shifts rarely and the fluid coupling dampens a lot of the roll-on-roll-off shock.  That said, I keep mine in good order.

Offline Dick

  • Gaggle Hero
  • *****
  • Posts: 1192
Re: Cush Drive question
« Reply #4 on: July 02, 2015, 04:19:08 PM »
I tried it once, but took out the wrong half.

Offline rodekyll

  • Gaggle Hero
  • *****
  • Posts: 21218
  • Not my real name
Re: Cush Drive question
« Reply #5 on: July 02, 2015, 04:24:04 PM »
You don't take out half of every pair.  You remove every other pair, leaving three full pairs in alternating holes.  I liberally grease mine and also slather it on the hub edge where it rides on the wheel.

Keep in mind the observation above where the author says the increased movement of the hub starts wearing the contact surfaces.  3pr v 6pr will result in more movement.

Offline Dick

  • Gaggle Hero
  • *****
  • Posts: 1192
Re: Cush Drive question
« Reply #6 on: July 02, 2015, 04:28:34 PM »
I know,I was just kidding.  :grin: But thanks for the heads up  :grin:
« Last Edit: July 02, 2015, 04:35:18 PM by Dick »

Offline rodekyll

  • Gaggle Hero
  • *****
  • Posts: 21218
  • Not my real name
Re: Cush Drive question
« Reply #7 on: July 02, 2015, 05:44:00 PM »
 :tongue:

Offline JoeW

  • Gaggle Hero
  • *****
  • *
  • Posts: 2495
    • The Guzzi Doctor
Re: Cush Drive question
« Reply #8 on: July 02, 2015, 07:30:42 PM »
Thanks for the input, I was just trying to figure out the plusses and minuses to this mod. I'm going back to all wedges, undrilled. When I question something like this it's always good to do with experience, we have a lot of that here. I also look at my bikes and what works on them. I just had the rear drive apart on the sidecar, first time in almost 20 years. The pinion bearings has a bit of play so, I replaced those. New seals and gaskets and fluid of course. I inspected the gears and splines and they were all fine. I popped open the cush drive and all is well. No play, or serious wear. If any bike puts stress on a drive line it's a sidecar. Stock works!
Joe Walano

 


NEW WILDGUZZI PRODUCT - Moto Guzzi Door Mat
Receive donation credit with door mat purchase!
Advertise Here