Author Topic: fork mods.  (Read 4103 times)

0 Members and 1 Guest are viewing this topic.

Offline mad mike

  • Full Member
  • *
  • Posts: 35
fork mods.
« on: April 24, 2012, 12:28:12 am »
does anyone have information ref. fitting modern fork internals to our dinosaur  front forks, thinking 2006 gsxr 600 internals?[which i just happen to have lying around] this is for a dresda race bike, [f2 forks]  so quite light weight [at least compared to the titanic!!!] thanks.   mike
BELIEVE NONE OF WHAT YOU HEAR, AND ONLY HALF OF WHAT YOU SEE.

Offline PeWe

  • Really Old Timer ...
  • *******
  • Posts: 15,452
  • Bike almost back to the 70's 2015
Re: fork mods.
« Reply #1 on: April 24, 2012, 03:11:25 am »
I read a thread before about this. http://forums.sohc4.net/index.php?topic=63784.0

The thread looked interesting when I have an old modified Suzuki GS1000 fork with dual rotors, bought 1985 but never realised the projekt on my bike.
CB750 K6-76  970cc (Earlier 1005cc JMR Billet block on the shelf waiting for a comeback)
CB750 K2-75 Parts assembled to a stock K2

Updates of the CB750 K6 -1976
http://forums.sohc4.net/index.php/topic,180468.msg2092136.html#msg2092136
The billet block build thread
http://forums.sohc4.net/index.php/topic,49438.msg1863571.html#msg1863571
CB750 K2 -1975  build thread
http://forums.sohc4.net/index.php/topic,168243.msg1948381.html#msg1948381
K2 engine build thread. For a complete CB750 -75
http://forums.sohc4.net/index.php/topic,180088.msg2088008.html#msg2088008
Carb jetting, a long story Mikuni TMR32
http://forums.sohc4.net/index.php/topic,179479.msg2104967.html#msg2104967

Offline mad mike

  • Full Member
  • *
  • Posts: 35
Re: fork mods.
« Reply #2 on: April 24, 2012, 05:44:20 am »
thanks for the link pewe,  -  didn't make myself too clear with my question, i wish to retain the f2 forks but upgrade them with modern internals, - any information would be great.   thanks.   mike
BELIEVE NONE OF WHAT YOU HEAR, AND ONLY HALF OF WHAT YOU SEE.

Offline Sam Green Racing

  • Moderator
  • Really Old Timer ...
  • *****
  • Posts: 16,068
  • I REALLY? hate black rims.
Re: fork mods.
« Reply #3 on: April 24, 2012, 06:03:56 am »
There are parts available to transform the forks, you could also keep your eye open at the show this weekend.

Sam. ;)
C95 sprint bike.
CB95 hybrid race bike
CB95 race bike
CB92
RS 175. sprint/land speed bike
JMR Racing CB750A street ET drag bike

Offline trueblue

  • A person who has had many interesting experiences, some of which are true, is known as an
  • Old Timer
  • ******
  • Posts: 3,122
Re: fork mods.
« Reply #4 on: April 24, 2012, 06:41:15 am »
I have considered cartridge fork emulators for my bike, they might be an option for you.  Does anyone know if they are as good as they say they are, will they improve my sloppy front end? Bad breath? Sleepless nights? Resale value of my house?
1979 CB650Z
Nothing can be idiot proofed, the world keeps producing better idiots.
Electronic Guages for your SOHC 4

Offline Doctor_D

  • Hot Shot
  • ***
  • Posts: 722
Re: fork mods.
« Reply #5 on: April 24, 2012, 06:48:33 am »
Maxton does cartridge-damper conversions for vintage forks.  No Honda listed on their website, but it's easy enough to enquire.

http://www.maxtonsuspension.co.uk/

Mine isn't a track-bike, but I've got RaceTech emulators and Works Suspension springs, and welded up the rebound holes.  After tuning the fluid volume and weight, it gets the job done.
Take care,
David
___________________________________________
1975 CB 750F - Project page: http://forums.sohc4.net/index.php?topic=66026.msg725479#msg725479
1978 CX500
1971 Norton Commando

Offline Sam Green Racing

  • Moderator
  • Really Old Timer ...
  • *****
  • Posts: 16,068
  • I REALLY? hate black rims.
Re: fork mods.
« Reply #6 on: April 24, 2012, 07:46:25 am »
Maxton does cartridge-damper conversions for vintage forks.  No Honda listed on their website, but it's easy enough to enquire.

http://www.maxtonsuspension.co.uk/

Mine isn't a track-bike, but I've got RaceTech emulators and Works Suspension springs, and welded up the rebound holes.  After tuning the fluid volume and weight, it gets the job done.

Why did I not think of that Dave  ??? :-[  Mike is only a few miles from Ron, he could take the forks to him and have the job done right. 8)

Sam. ;)
C95 sprint bike.
CB95 hybrid race bike
CB95 race bike
CB92
RS 175. sprint/land speed bike
JMR Racing CB750A street ET drag bike

Offline turboguzzi

  • Old Timer
  • ******
  • Posts: 4,080
Re: fork mods.
« Reply #7 on: April 24, 2012, 09:39:26 am »
besides maxton, this guy fits CBR600 cartridges into British forks, should work on our 35mm's too i'd say

http://www.cosentinoengineering.com/index_files/Page405.htm

not that hard to DIY actually but you'll have to spend some time figuring out the shim stack/oil grade etc.

got gsxr750 as well as R1 cartridges waiting to be transplanted into my Gpz's 38mm unit, still have to decide which one is easier to do... ;)

Offline fang

  • Hot Shot
  • ***
  • Posts: 401
    • Food Renegade
Re: fork mods.
« Reply #8 on: April 24, 2012, 07:47:40 pm »
For my Yamaha RD350 go-fast project, I am looking at updating the front end with springs and Emulators from RaceTech.
Here's a link:
http://www.racetech.com/HTML_FILES/EMULATORGV.HTML

For around $350 you can get some good bang for your buck (NON-PROGRESSIVE SPRINGS + EMULATORS).  I don't know if they offer a set for CB750 bikes, but there might be similar options from other folks.

-fang
« Last Edit: April 25, 2012, 07:42:06 pm by fang »
Download Nervous Norvus' "The Fang"  HERE.
Tired of eating CRAP!

Offline martin426

  • Full Member
  • *
  • Posts: 28
Re: fork mods.
« Reply #9 on: April 25, 2012, 04:50:30 am »
Race Tech do offer multiple spring(and rates), adaptor and emulator combinations for most SOHC & DOHC vintage Hondas.
I just received full setups for CB550, CB750 and CB900F forks.
 
Scott 
1978 CB550
1970 CR750 replica
1979 RCB1000 replica
1988 RC31

Offline trueblue

  • A person who has had many interesting experiences, some of which are true, is known as an
  • Old Timer
  • ******
  • Posts: 3,122
Re: fork mods.
« Reply #10 on: April 25, 2012, 04:52:24 am »
Race Tech do offer multiple spring(and rates), adaptor and emulator combinations for most SOHC & DOHC vintage Hondas.
I just received full setups for CB550, CB750 and CB900F forks.
 
Scott 
They have them for the 650 too what I want to know is are they worth the effort and cash.
1979 CB650Z
Nothing can be idiot proofed, the world keeps producing better idiots.
Electronic Guages for your SOHC 4

Offline martin426

  • Full Member
  • *
  • Posts: 28
Re: fork mods.
« Reply #11 on: April 25, 2012, 05:09:39 am »
In my experience they do.  It is a very popular setup in the Canadian vintage racing scene.
 
Scott
1978 CB550
1970 CR750 replica
1979 RCB1000 replica
1988 RC31

Offline Doctor_D

  • Hot Shot
  • ***
  • Posts: 722
Re: fork mods.
« Reply #12 on: April 25, 2012, 07:26:05 am »
Take care,
David
___________________________________________
1975 CB 750F - Project page: http://forums.sohc4.net/index.php?topic=66026.msg725479#msg725479
1978 CX500
1971 Norton Commando

Offline mad mike

  • Full Member
  • *
  • Posts: 35
Re: fork mods.
« Reply #13 on: April 25, 2012, 02:59:19 pm »
thanks for all your input guys,gonna have a play with the gsxr forks as i already have them, just wondered if anyone had already done this type of conversion as a cheaper alternative to maxton etc. will let you know how i get on.    mike.
BELIEVE NONE OF WHAT YOU HEAR, AND ONLY HALF OF WHAT YOU SEE.

Offline somesuch

  • Hot Shot
  • ***
  • Posts: 288
Re: fork mods.
« Reply #14 on: May 26, 2012, 08:34:55 am »
any progress on this Mike? I was looking at my stock K3 tubes and it looks like there is not enough room there. The earlier forks might work. GL1000 forks have even more room. What bike has the thinnest cartridges?