Author Topic: CR480 Fork Upgrade  (Read 5291 times)

0 Members and 1 Guest are viewing this topic.

Offline Tahitian_Red

  • Legend
  • *****
  • Posts: 1109
  • Mugen ME480
    • View Profile
CR480 Fork Upgrade
« on: August 09, 2014, 03:54:45 pm »
Finally going to take on the CR480 fork rebuild.  I have all the parts and will start after I finish jetting the new carb.



I had tried an old damping rod hop-up trick that did not work out so well (welded up a few holes and opened up some others), hence the unmolested damping rods were needed.  All new bushings and seals, plus emulators should give the front end a sweet feel.
 :D
The "Factory Novice"
California, USA

'74 Suzuki TM100, '75 Bultaco 250 Pursang, '77 Honda XR75, '77 Suzuki RM125B, '77 Yamaha YZ400D, '79 Honda CR250RZ Moto-X Fox Replica, '83 Honda ME480RD Mugen

Offline FourstrokeForever

  • Legend
  • *****
  • Posts: 1702
  • AKA Mark H #35 VCM
    • View Profile
Re: CR480 Fork Upgrade
« Reply #1 on: August 09, 2014, 05:04:45 pm »
I'd like to know how you think the update went....keep us posted.
Arrogance.....A way of life for the those that having nothing further to learn.

Offline John Orchard

  • Legend
  • *****
  • Posts: 3065
  • ^^^ July 1984
    • View Profile
Re: CR480 Fork Upgrade
« Reply #2 on: August 22, 2014, 09:42:09 am »
Hopefully next time we can keep the cable-tie away the triple-clamp  ;-)



Johnny O - Tahition_Red factory rider.

Offline Tahitian_Red

  • Legend
  • *****
  • Posts: 1109
  • Mugen ME480
    • View Profile
Re: CR480 Fork Upgrade
« Reply #3 on: August 22, 2014, 11:46:40 am »
Hopefully next time we can keep the cable-tie away the triple-clamp  ;-)



That's the plan.  ;)
The "Factory Novice"
California, USA

'74 Suzuki TM100, '75 Bultaco 250 Pursang, '77 Honda XR75, '77 Suzuki RM125B, '77 Yamaha YZ400D, '79 Honda CR250RZ Moto-X Fox Replica, '83 Honda ME480RD Mugen

Offline FourstrokeForever

  • Legend
  • *****
  • Posts: 1702
  • AKA Mark H #35 VCM
    • View Profile
Re: CR480 Fork Upgrade
« Reply #4 on: August 23, 2014, 08:51:18 am »
Good to see you flying the Aussie flag on the lid when you were over in the US John.

What's the yarn about the cable tie?
Arrogance.....A way of life for the those that having nothing further to learn.

Offline smed

  • Legend
  • *****
  • Posts: 1646
    • View Profile
Re: CR480 Fork Upgrade
« Reply #5 on: August 23, 2014, 08:53:56 am »
Forks bottoming out I'm thinking ;)

Offline John Orchard

  • Legend
  • *****
  • Posts: 3065
  • ^^^ July 1984
    • View Profile
Re: CR480 Fork Upgrade
« Reply #6 on: August 23, 2014, 08:55:53 am »
Yeh Jay had modded the forks from someone elses say-so, there was virtually no comp or rebound damping, I noticed it before I headed out, riding it confirmed it  :-)
Johnny O - Tahition_Red factory rider.

Offline FourstrokeForever

  • Legend
  • *****
  • Posts: 1702
  • AKA Mark H #35 VCM
    • View Profile
Re: CR480 Fork Upgrade
« Reply #7 on: August 23, 2014, 09:05:22 am »
Ahh, I'm onto it now. Bit slow on the up take this morning....I need another coffee  ::)
Arrogance.....A way of life for the those that having nothing further to learn.

Offline Tahitian_Red

  • Legend
  • *****
  • Posts: 1109
  • Mugen ME480
    • View Profile
Re: CR480 Fork Upgrade
« Reply #8 on: August 28, 2014, 05:53:31 am »
I was going to do the rebuild myself, but I can not seem to get the work bench cleared off.  I sent them to a local Race Tech specialist (same guy who did the forks on my RT-1) who will complete the job, including having the sliders hard anodized.  I will post pics when they are arrive.
 :D
The "Factory Novice"
California, USA

'74 Suzuki TM100, '75 Bultaco 250 Pursang, '77 Honda XR75, '77 Suzuki RM125B, '77 Yamaha YZ400D, '79 Honda CR250RZ Moto-X Fox Replica, '83 Honda ME480RD Mugen

Offline Tahitian_Red

  • Legend
  • *****
  • Posts: 1109
  • Mugen ME480
    • View Profile
Re: CR480 Fork Upgrade
« Reply #9 on: March 13, 2015, 09:38:31 am »
Here is a pic of the forks:



Tubes check for straightness and polished
Sliders hard anodized
New bushings installed
Tweaked Race Tech emulators
Race Tech .46 springs
15 wt fork oil

She will be awaiting your return Johnny!  ;)

« Last Edit: March 13, 2015, 09:47:43 am by Tahitian_Red »
The "Factory Novice"
California, USA

'74 Suzuki TM100, '75 Bultaco 250 Pursang, '77 Honda XR75, '77 Suzuki RM125B, '77 Yamaha YZ400D, '79 Honda CR250RZ Moto-X Fox Replica, '83 Honda ME480RD Mugen

Offline John Orchard

  • Legend
  • *****
  • Posts: 3065
  • ^^^ July 1984
    • View Profile
Re: CR480 Fork Upgrade
« Reply #10 on: March 13, 2015, 11:23:57 am »
Lookin good Jay  :-)
Johnny O - Tahition_Red factory rider.