Author Topic: 752 Headset diameter query (Read 6044 times)

orange · « **on:** December 25, 2006, 08:50:19 pm »

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!

Simon · « **Reply #1 on:** December 26, 2006, 12:18:11 am »

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.

orange · « **Reply #2 on:** December 26, 2006, 02:01:01 am »

This one has 1997 manitou suspension forks with a threaded headset. Only seen the photo so far - so can't say any more...

proflex252 · « **Reply #3 on:** December 26, 2006, 11:23:48 am »

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

Matno · « **Reply #4 on:** December 26, 2006, 01:04:11 pm »

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.

orange · « **Reply #5 on:** December 26, 2006, 10:47:34 pm »

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.

Colin · « **Reply #6 on:** December 27, 2006, 03:44:42 am »

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.

orange · « **Reply #7 on:** December 28, 2006, 08:06:13 pm »

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!

orange · « **Reply #8 on:** December 29, 2006, 01:30:35 am »

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?

Simon · « **Reply #9 on:** December 29, 2006, 04:09:37 am »

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.

orange · « **Reply #10 on:** December 29, 2006, 04:59:17 am »

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.

orange · « **Reply #11 on:** December 29, 2006, 05:24:47 am »

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:

retrobikeguy · « **Reply #12 on:** December 29, 2006, 07:03:31 pm »

Quote

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 !

Ade · « **Reply #13 on:** December 29, 2006, 11:55:42 pm »

Try rapid descent - they have some kits for a 755, but might be able to cut one to the length you need.

Ade

orange · « **Reply #14 on:** December 30, 2006, 06:33:39 am »

cheers - dropped Callum an email yesterday, awaiting his reply

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Author Topic: 752 Headset diameter query (Read 6044 times)