HEADSET SIZE

[JONATHAN WYATT]

HI
DOES THE 555 HAVE A 1 1/4 HEADSET SIZE
READ SOMEWHERE IT DOES ABOUT TO GET ONE SO NEED TO KNOW TO GET CORRECT ONE
THANX     SLIM

[guman007]

I think it's 1 1/8, 1.5 is only 2 or 3 years old!

[Matno]

Not 1.5, 1.25...

However, I've never heard of a Proflex being a 1.25" headset size. In fact, the only ones I've heard of doing that are Gary Fisher and Klein (back in the day), and Cannondale (up until last year when they switched to the new 1.5" standard).

A 555 would probably be either a 1" or a 1 1/8" - I'm not sure which as that is right during the time when many manufacturers were transitioning from 1" to 1 1/8".

Anybody have a 555 or older bike that can verify the head tube size?

[kiwi]

i would hazard a guess and say the 555 would be a 1".....755 wc and above were 1.125(1 and 1/8).but I may be wrong.
Does your  headset have a double nut arrangement directly above the head tube of the frame.?

[JONATHAN WYATT]

 ITS ACTUALLY JUST A FRAME IM GETTING SO NO THING ON IT TO TELL WHAT SIZE IT COULD BE THE GUY I BOUGHT IT OFF SAYS ITS A NORMAL SIZE
I HAVENT RECIEVED IT YET SO I CANT MEASURE IT
I WANTED TO PUT SOME MANITOUS ON IT BUT DIDNT HAVE 1 1/4 STEERER SO I BOUGHT ONE ON E BAY JUST IN CASE.
I ACTUALLY READ IT ON THE FIRST FLIGHT BIKE WEB SITE WHERE THEY RESTORED ONE AND SAID IT WAS A 1 1/4 SIZE.
JUST HOPE ITS NOT 1 INCH OR IM IN THE BROWN STUFF     CHEERS

[Dennis]

Jonathan,

shhhh, you're shouting. please use lowercase letters.

thanks.

[proflex252]

The non shouting matti tells something about his bikes:

My 252 has a 1" steerer
My 952 has a 1 1/8" steerer
My 853 has a 1 1/8" steerer

So it will be the best, to wait until the frame has arrived and meassure it. I think the chances are quite equal.

CU

Matti

[Matno]

If they already started going from 1" to 1 1/8" in 1992 (e.g. on the  952), then I'm almost 100% certain that any bike made 3 years later like a 555 made in 1995) would be the 1 1/8" steerer, making it compatible with almost all forks on the market now... My first MTB was a 1995 model, and it was a 1 1/8th el cheapo bike.

I've been following this forum for longer than I like to admit (going on 5 or 6 years now!), and I've NEVER seen any posts about a 1 1/4" headtube on ANY Proflex bike.  Remember, back in the day, Proflex was a very high-end bike company that used the latest technology. 1" headsets became obsolete in the very early 90's (at least on MTBs - I've still got one on my road bike!)  1.25" headtubes were experimental and didn't last more than a year or two for all but C'dale. Since then, 1.125" (a.k.a. 1 1/8") has been the industry standard. (The new 1.5" standard is mostly only for heavy duty freeride bikes and C'dale).

For what it's worth...

[jonathan wyatt]

  sorry guys  ( on 2 counts )
firstly for making such a loud first appearance
       not so loud now  [smiley=disbelief.gif]
now for the really embarrising one
    its actually a 1992 752 that they have restored there   so all that frantic buying up of all the 1 1/4 stuff on e bay wont be needed       can allways put it back on though
 so any way thanks for all the help
maybe i llcome up with a better one next time
     

[kiwi]

so for our enlightenment and edification can you tell us what headset size you have...and matno you are right proflex didnt use a 1 .25 headset AfaIK but often the mid to kow end frames were previuos or older mods note that it s only the 8xx and 9xx that had 1 and 1 /8 in 252,s post

[jonathan wyatt]

 i should recieve the frame by the 8/9 sept
the guy i bought it off is on holidays left soon after i
won it on e bay
hence the lack of info on the dimensions
soon as i get it i shall bring everybody up to date
the annoying thing is i have a digital vernier calliper to get everything ( almost ) spot on but cant use cos no frame
thanx again    slim

[Jim Palmer]

How do I measure my headset?  I measured the outside diameter of the top of tube that the stem mounts to, and it is only 1".  Does that mean it's a 1"?  If it is, can I convert to a 1.125?  Does anyone know if I can put on the long (125-160mm) fork?  I know alot of ?'s but I don't know what I'm doing, so thanks.