K2 / Proflex Riders Group
General => Tech Forum => Topic started by: orange on December 25, 2006, 08:50:19 pm
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I've just bought a 752 frameset (yet to collect it) - what headset diameter does it have? My friend had one back in the day and I seem to recall it was 1 1/4" - am I right?
Also what sizes did the frame come in? Not sure what I've got yet...'cept it's white!
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I'm not sure but I think my 853 was 1 1/8"
I would imagine the 752 would be the same
wouldn't the 752 of run a flexstem ?? does the 752
use a aheadset system or quill type (expander wedge)
?? Doesn't matter headset wise just curious.
Simon.
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This one has 1997 manitou suspension forks with a threaded headset. Only seen the photo so far - so can't say any more...
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My 252 has a 1" steerer
My 853 has a 1 1/8" steerer
and my 952 has a 1 1/8" steerer, too.
But I have never heard of 1 1/4" steerers on a offroad proflex.
CU
Matti
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Far as I know, the only bikes that have used a 1 1/4" headtube were some older Gary Fishers and all Cannondales up until 3 or 4 years ago (when they switched to 1.5"). Klein also had a weird headtube size for a while in the very early 90s. Other than that, I think everybody made the gradual switch from the 1" to the 1 1/8" headtube in the early to mid 90s.
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Great - that's a relief! It's bad enough that the seatpost is 27.0, without having to worry about the stem too!
Thanks guys.
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I bought a headset on eBay labelled:
"Girvin Components Vector Dia Compe AHeadset".
I didn't even stop to consider what size it was as I assumed it would fit my XP-X/Vector II ..........until it arrived................it's a 1 1/4" !!
God Knows what it might have fitted from the Girvin Farm!
It'll be making a re-appearance on eBay in the near future!
Col.
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I've just picked it up this morning and found out it's actually a 753 (I misread the number in the photo!) - in which case I assume it's a 1 1/8th headset but is the seatpost still 27.0 or has it now gone up to 27.2?
It's a lovely pearlescent white!
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following on from the last message I have stuck a 27.2 post in and this is loose - so what size is it? 27.4 or some other bizarre size?
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Don't know the size maybe best bet would be to
get the frame tube measured,
once you get the size and it turns out to be a rare
size you could try the USE shims which have a great
range of sizes http://www.chainreactioncycles.com/Models.aspx?ModelID=820
then get a 25.0 post to suit.
Simon.
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ahh, thanks, actually I have a USE 25mm seatpost I could use (excusing the pun!) although it's a bit short for me at 330mm, may try shimming that up. Cheers.
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Update: my wife's bike happens to have a 28.0 seatpost and guess what - it fits! so that answers one question - however, I stuck a quill headset in that I'm sure is 1 1/8th and it doesn't fit... I think it may be 1 1/4" after all!! Could it even be 1.5"? Also what rear shock options do I now have given the elastomer is rock solid?
here is a photo: (http://img346.imageshack.us/img346/6338/proflex752fi9.jpg) (http://imageshack.us)
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My 252 has a 1" steerer
My 853 has a 1 1/8" steerer
and my 952 has a 1 1/8" steerer, too.
But I have never heard of 1 1/4" steerers on a offroad proflex.
CU
Matti
IIRC the early first gen aluminium proflex frame was a 1-1/4" size, I have a 750 (1991) frame that is this size !
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Try rapid descent - they have some kits for a 755, but might be able to cut one to the length you need.
Ade
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cheers - dropped Callum an email yesterday, awaiting his reply
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When I put my wife's bike's 28.0 seatpost in, there was a very little play - before I buy a shim for my 25.0 post do you think it's actually more likely to be a 28.2?
Anybody actually got a 753 with a seatpost in it they can check please? ;-)
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Again - my 91 750 has a 28.0mm post !
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did a google on seatpost size for 752..sheldon brown says 27!
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I went by what Sheldon Brown said for the 752 (before I found out that I had a 753 after all when I collected it!), bought a 27.0 and it was rattling loose :-( so now need to get a 28.0 as I'm sure that's what I need.
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my 552 is 1 1/4 headed and seat tube is 28,0.