Seatpost width for specialised hardrock??
11-07-12 | 02:00 PM
#1
Thread Starter
Newbie
Joined: Nov 2012
Posts: 3
Likes: 0
Seatpost width for specialised hardrock??
Hi there,
I got this old hardrock off ebay with the intention of putting various newer parts on it including a new seat post. Trouble is, the original post is well scratched so I can't see the right size and haven't got a fine enough measuring tool to measure in 0.1s of a mm. I did see on some other posts that 26.6mm was a common size around this era? the drivetrain and mech are Altus C20 if that helps...
Any help appreciated...
I got this old hardrock off ebay with the intention of putting various newer parts on it including a new seat post. Trouble is, the original post is well scratched so I can't see the right size and haven't got a fine enough measuring tool to measure in 0.1s of a mm. I did see on some other posts that 26.6mm was a common size around this era? the drivetrain and mech are Altus C20 if that helps...
Any help appreciated...
11-07-12 | 02:50 PM
#3
Bianchi Goddess
Joined: Apr 2009
Posts: 28,967
Likes: 4,236
From: Shady Pines Retirement Fort Wayne, In
Bikes: Too many to list here check my signature.
I would have thought it would eb 26.8 but 26.6 is a common size too. i agree get some metric calipers or head to you bike shop.
__________________
“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk
“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk
11-07-12 | 02:56 PM
#4
Full Member
Joined: Sep 2010
Posts: 346
Likes: 1
From: Philadelphia
Bikes: 85 Peugeot Canyon Express, 73? Torpado, 85 Trek 400
Try and match the components with Bikepedia to get the year. You'll see some components change year to year so should be able to get a match.
Here's 1995 that says 26.6. 96 says 26.2.
https://www.bikepedia.com/quickbike/B...e#.UJrLGIXfY4Q
Here's 1995 that says 26.6. 96 says 26.2.
https://www.bikepedia.com/quickbike/B...e#.UJrLGIXfY4Q
11-07-12 | 07:44 PM
#5
Really Old Senior Member
Joined: Feb 2007
Posts: 14,668
Likes: 1,905
From: Mid Willamette Valley, Orygun
Bikes: 87 RockHopper,2008 Specialized Globe. Both upgraded to 9 speeds. 2019 Giant Explore E+3
Or read the date codes from the Shimano parts.
https://www.sheldonbrown.com/shimano.html#date
bottom of the page
https://www.sheldonbrown.com/shimano.html#date
bottom of the page
11-07-12 | 11:49 PM
#6
Senior Member
Joined: Jul 2006
Posts: 946
Likes: 2
From: beantown
Bikes: '89 Specialized Hardrock Fixed Gear Commuter; 1984? Dawes Atlantis
Stop by your LBS and make sure you ask before trying to stuff a seatpost into the hole.
They might have a seatpost sizer or a set of scratched up posts you can try before you start putting a new seatpost in for a test fit.
They might have a seatpost sizer or a set of scratched up posts you can try before you start putting a new seatpost in for a test fit.
11-08-12 | 07:30 AM
#7
multimodal commuter
Joined: Nov 2006
Posts: 19,810
Likes: 597
From: NJ, NYC, LI
Bikes: 1940s Fothergill, 1959 Allegro Special, 1963? Claud Butler Olympic Sprint, Lambert 'Clubman', 1974 Fuji "the Ace", 1976 Holdsworth 650b conversion rando bike, 1983 Trek 720 tourer, 1984 Counterpoint Opus II, 1993 Basso Gap, 2010 Downtube 8h, and...
I have a specialized hardrock from '88 or so, and it takes a 26.6 mm post.
11-08-12 | 07:58 AM
#8
Still learning
Joined: May 2012
Posts: 11,529
Likes: 88
From: North of Canada, Adirondacks
Bikes: Still a garage full
I found that Specialized MTB seatposts are all over the map and they switch from year to year. Even bikepedia is wrong on occassion. Take the old seatpost down to your LBS or hardware store and let them measure it for you. You can get digital calipers at amazon for less than $15.00.
11-11-12 | 05:07 PM
#9
Thread Starter
Newbie
Joined: Nov 2012
Posts: 3
Likes: 0
Hi guys,
thanks for the advice. I did go to my LBS and they said it was 26.5mm which seems really odd...may have to get a second opinion. Also looked at bikepedia but there were inconsistencies regarding the various frame sizes and spec on each model compared to mine: think mine might be 1993 but it's only 6speed (not 7) and is a 17" frame (and not 16.5). Anyway, I guess ur all right - I need a proper caliper.
thanks for the advice. I did go to my LBS and they said it was 26.5mm which seems really odd...may have to get a second opinion. Also looked at bikepedia but there were inconsistencies regarding the various frame sizes and spec on each model compared to mine: think mine might be 1993 but it's only 6speed (not 7) and is a 17" frame (and not 16.5). Anyway, I guess ur all right - I need a proper caliper.
11-11-12 | 07:49 PM
#10
Senior Member
Joined: Oct 2011
Posts: 10,051
Likes: 2,508
From: Fairplay Co
Bikes: Current 79 Nishiki Custum Sport, Jeunet 620, notable previous bikes P.K. Ripper loop tail, Kawahara Laser Lite, Paramount Track full chrome, Raliegh Internatioanl, Motobecan Super Mirage. 59 Crown royak 3 speed
Well if they measured it at 26.5 my guess would be it actually takes 26.4or 26.6 which are lot more common and would be consistant with a older Specialized seatposts typical go by .2 difference. 26.5 just doesn't seem right for seat post. While a real good set of calipers will get you close I have often found the only way be sure is to try several seat posts to be sure. Did the shop actually stick a post in there to verify the size.
Last edited by zukahn1; 11-11-12 at 07:55 PM.
