Gsxr600k1 usd conversion.

[FROSTY]

Hey folks just checking the opinions of the gsxr600 experts here.
Wondering the practicality of fitting later model gixxer 600 usd forks to a K1 gixxer 600.
My reasoning is that initial front end set up with be easier for the experts-Given that setup data tends to be forgotten after a few years.
Am I just thinking shite or is this sa good idea??

[DEATH_INC.]

Yep, get a complete frontend with radial brakes, lighter and more rigid + better brakes, ya can't go wrong :)

[98tls]

I posted this up many moons ago Frosty,may be some info re the swap.http://www.kiwibiker.co.nz/forums/showthread.php?t=80803 may well be of use to others with the modding madness.

[cowpoos]

Hey folks just checking the opinions of the gsxr600 experts here.
Wondering the practicality of fitting later model gixxer 600 usd forks to a K1 gixxer 600.
My reasoning is that initial front end set up with be easier for the experts-Given that setup data tends to be forgotten after a few years.
Am I just thinking shite or is this sa good idea??
the real question you should ask yourself is....will this benifit 'MY LAP TIMES'

Or could the money be better spent elsewhere Tony?

[FROSTY]

I posted this up many moons ago Frosty,may be some info re the swap.http://www.kiwibiker.co.nz/forums/showthread.php?t=80803 may well be of use to others with the modding madness.
Thanks dude


the real question you should ask yourself is....will this benifit 'MY LAP TIMES'

Or could the money be better spent elsewhere Tony?
Nahh man this is for a fun bike.

[Robert Taylor]

Hey folks just checking the opinions of the gsxr600 experts here.
Wondering the practicality of fitting later model gixxer 600 usd forks to a K1 gixxer 600.
My reasoning is that initial front end set up with be easier for the experts-Given that setup data tends to be forgotten after a few years.
Am I just thinking shite or is this sa good idea??

Frosty, Frosy, Frosty,the setup data is always a work in progress. Point of fact there is never a perfect setting as there is always something better. There is no way that Id instal the same stuff in GSXR600K1 forks that I did back then, theres much better stuff and much better settings. Kinda makes sense after 8 years, nothing stands still.
Sure the later forks allow the use of much better calipers etc but this is not night and day stuff. The BIG fault of USD forks is that fork deflection under load ( and there is ALWAYS some deflection ) moves the bushings / load bearing surfaces out of line, creating more friction. Reducing friction is one of the major preoccupations of any good suspension tuner. ''Right way up'' forks have rather less problem in that area.
Much like the current ''tossing off'' preoccupation that journalists currently have with big piston forks ''progress'' is not always totally positive.

[FROSTY]

Frosty, Frosy, Frosty,the setup data is always a work in progress. Point of fact there is never a perfect setting as there is always something better. There is no way that Id instal the same stuff in GSXR600K1 forks that I did back then, theres much better stuff and much better settings. Kinda makes sense after 8 years, nothing stands still.
Sure the later forks allow the use of much better calipers etc but this is not night and day stuff. The BIG fault of USD forks is that fork deflection under load ( and there is ALWAYS some deflection ) moves the bushings / load bearing surfaces out of line, creating more friction. Reducing friction is one of the major preoccupations of any good suspension tuner. ''Right way up'' forks have rather less problem in that area.
Much like the current ''tossing off'' preoccupation that journalists currently have with big piston forks ''progress'' is not always totally positive.
Jeysus Rob friggin try that in plain english woodja?
Dya reckon then that the k1 front end is dial innable enough as is then ?
For the sake of a simple pommy git please restrict ya answer to a simple yes/no

[Mully]

You know what they say, Frosty: if it ain't USD, it ain't worth shit.

You need new brakes too......

[White trash]

Jeysus Rob friggin try that in plain english woodja?
Dya reckon then that the k1 front end is dial innable enough as is then ?
For the sake of a simple pommy git please restrict ya answer to a simple yes/no

Why don't you ask Dave Manuel. I don't think he had any problem with his K1/2/3 front end this Nationals just gone.

[FROSTY]

Why don't you ask Dave Manuel. I don't think he had any problem with his K1/2/3 front end this Nationals just gone.
nearly bought that one--then it was goneburgered

[CookMySock]

Jeysus Rob friggin try that in plain english woodja?
Dya reckon then that the k1 front end is dial innable enough as is then ?
For the sake of a simple pommy git please restrict ya answer to a simple yes/nohehe, he didn't say. Dontcha love just love boffins.

Somewhere in there, he said the better braking you would get isn't actually a huge amount better, and there are issues with the USD fork suspension binding up under load.. hinting that you might achieve more with just tuning what you have got. I think.

Steve

[Shaun]

Jeysus Rob friggin try that in plain english woodja?
Dya reckon then that the k1 front end is dial innable enough as is then ?
For the sake of a simple pommy git please restrict ya answer to a simple yes/no




ENGRIS IS, Modify the std 01 forks mate, CKT have the specs to do it great.

[Pussy]

Yep, time never stands still in the suspension world. Robert is always working on the latest developments/ideas.
+1 on modifying the stock 01 forks

[GSVR]

I would be very careful with the math. You may find a much better option would be to sell the K1 add the money a late model front end costs and buy a later model that already has better engineering.

Unless your K1 is in excellent condition all your doing is adding a great front end to a bike that everything is worn and needs work done to.

But gezz Frosty your a used vehicle saleman so I feel like I'm telling granny how to suck eggs.

[Robert Taylor]

I would be very careful with the math. You may find a much better option would be to sell the K1 add the money a late model front end costs and buy a later model that already has better engineering.

Unless your K1 is in excellent condition all your doing is adding a great front end to a bike that everything is worn and needs work done to.

But gezz Frosty your a used vehicle saleman so I feel like I'm telling granny how to suck eggs.

Fair point, but the only main wear items in both fork designs are the seals, upper and lower bushings, top cartridge bushings and the rebound bands. If the main tubes are pitted then obviously the cost gets out of control

As for better engineering no, better function yes and no. USD forks bind more when deflected, the later model forks have a bending shim stack midvalve so there is more instant damping control, but the base components inside the cartridges are still much the same with much the same issues as back in 2001. And with the K6 / 7 / 8 a major deficiency in high speed rebound that needs addressing with reshimming.

Swings and roundabouts, but the only trouble with a USD conversion is all the other costly bits that go with it and adaptation hassles, often.

[R6_kid]

If you do decide to change it to something more modern, don't forget that Ebay is your friend.

[GSVR]

Fair point, but the only main wear items in both fork designs are the seals, upper and lower bushings, top cartridge bushings and the rebound bands. If the main tubes are pitted then obviously the cost gets out of control

As for better engineering no, better function yes and no. USD forks bind more when deflected, the later model forks have a bending shim stack midvalve so there is more instant damping control, but the base components inside the cartridges are still much the same with much the same issues as back in 2001. And with the K6 / 7 / 8 a major deficiency in high speed rebound that needs addressing with reshimming.

Swings and roundabouts, but the only trouble with a USD conversion is all the other costly bits that go with it and adaptation hassles, often.

Not so much the original forks I was refering to here but the rest of the bike ie engine,bodywork etc. Some classic racers have better fork internals than alot of modern bikes aye.

[DEATH_INC.]

Swings and roundabouts, but the only trouble with a USD conversion is all the other costly bits that go with it and adaptation hassles, often.
Nope, on the gixxers ya just get a complete front end, triples forks wheel etc and they fit right in....
As for the rest, I still stand by what I believe to be the main advantages, braking + weight, a little can be a lot with these things...

[Robert Taylor]

Nope, on the gixxers ya just get a complete front end, triples forks wheel etc and they fit right in....
As for the rest, I still stand by what I believe to be the main advantages, braking + weight, a little can be a lot with these things...

And the all up cost of all those parts is? Its in the end event an exercise in how much bang for buck.

[DEATH_INC.]

And the all up cost of all those parts is? Its in the end event an exercise in how much bang for buck.
S/h, cheaper than an ak20 or similar kit....

[Robert Taylor]

S/h, cheaper than an ak20 or similar kit....

I wasnt so much eluding to complete cartridge replacement which inarguably is a dollar exercise. AK20s are also now not even on the radar screen because there is much better stuff on the market.
With the GSXR600/750 forks very decent improvement can be effected at affordable cost by simply revalving the stock pistons, and this also applies to the most recent models that have a serious rebound damping deficiency.
A step further is to fit replacement aftermarket pistons in the stock cartridges.
Fitting later model front ends does not cure suspension issues, because all mass produced units have shortcomings despite all the pr and media hype.

[dipshit]

With the GSXR600/750 forks...
...A step further is to fit replacement aftermarket pistons in the stock cartridges.

Question. Shortly i will have the shock out on my k8 GSXR600 to have a 8.5kg spring fitted in place of the 9.4kg standard one. (I am 77kg)

Is there any other modifications that would be worthwhile doing when the shock is out... or just do the spring first by itself and see how it goes?

[Robert Taylor]

Question. Shortly i will have the shock out on my k8 GSXR600 to have a 8.5kg spring fitted in place of the 9.4kg standard one. (I am 77kg)

Is there any other modifications that would be worthwhile doing when the shock is out... or just do the spring first by itself and see how it goes?

Are you also using it for occassional track days? If so yes, we can revalve it.

BTW our front fork mod makes a HUGE difference, Shaun Harris delivered a set to a guy in Aucklalnd today and he was stunned with the difference.

[dipshit]

Are you also using it for occassional track days? If so yes, we can revalve it.

BTW our front fork mod makes a HUGE difference, Shaun Harris delivered a set to a guy in Aucklalnd today and he was stunned with the difference.

Yeah it will probably see the occasional track day. I will keep that in mind.
Forks are on the list to do after the shock.

Blair Selfe in Oamaru will be doing the work.

Thanks for the tips.

[Sidewinder]

just get a new bike if it bothers you that much dude

[Wingnut]

Blair Selfe in Oamaru will be doing the work.



Brave man you are - Brave indeed.....

[dipshit]

Brave man you are - Brave indeed.....

. . :scratch: . . :confused:

[carver]

I wasnt so much eluding to complete cartridge replacement which inarguably is a dollar exercise. AK20s are also now not even on the radar screen because there is much better stuff on the market.
With the GSXR600/750 forks very decent improvement can be effected at affordable cost by simply revalving the stock pistons, and this also applies to the most recent models that have a serious rebound damping deficiency.
A step further is to fit replacement aftermarket pistons in the stock cartridges.
Fitting later model front ends does not cure suspension issues, because all mass produced units have shortcomings despite all the pr and media hype.

i found the best bang for buck was the screwdriver i got for adjusting them.

[Robert Taylor]

i found the best bang for buck was the screwdriver i got for adjusting them.

All the way to cavitation as often happens.

[Robert Taylor]

Yeah it will probably see the occasional track day. I will keep that in mind.
Forks are on the list to do after the shock.

Blair Selfe in Oamaru will be doing the work.

Thanks for the tips.

Blair is very very good, with respect to the forks we keep the spec to ourselves because we spent dyno and track time developing it, its not something we ''give away''.

[cowpoos]

Blair is very very good, with respect to the forks we keep the spec to ourselves because we spent dyno and track time developing it, its not something we ''give away''.

You should re frase that to...how you go along to race tracks out of yourown pocket and help racers out of your own pocket...etc etc etc....for a tiny bit of intelectual property...that you will give away for free anyway!!! you,you bad arse capitalist you!!!

[dipshit]

Blair is very very good, with respect to the forks we keep the spec to ourselves because we spent dyno and track time developing it, its not something we ''give away''.

You need a sub branch in the south island.

[98tls]

You need a sub branch in the south island. If so make it Oamaru then i could get him to sort out the old S,fwiw the Honda shop here have been more than helpful with time/advice on my old bitsa race bike.:niceone:

[Robert Taylor]

You need a sub branch in the south island.

Stay tuned. Bear in mind though that everything we laboriously work out has to have a return.

[98tls]

Stay tuned. Bear in mind though that everything we laboriously work out has to have a return. I havent forgotten your mention of rear suspenders for a TL there Robert,(sadly i can understand that you probably have):doh:That aside a branch etc of your expertise downunder would be a very welcome thing for many i am sure.