Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

Tandem Cycling A bicycle built for two. Want to find out more about this wonderful world of tandems? Check out this forum to talk with other tandem enthusiasts. Captains and stokers welcome!

User Tag List

Reply
 
Thread Tools Search this Thread
Old 09-17-07, 10:07 AM   #1
djembob02
Senior Member
Thread Starter
 
djembob02's Avatar
 
Join Date: Sep 2005
Location: New Orleans
Bikes: Cannondale Road Tandem, Rodbikes Belt Drive Fixed Gear
Posts: 180
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
need super long 27.2 seat post

I have a very short framed triplet which tapers down from the captain to the rear. My child sits in the middle and my adult stoker on the back. Her seatpost is a 27.2 410mm. Its almost up to the max. I want to be able to ride with taller riders every once in a while (ie. family, other fast riders in my group).
As such I am needing to get a really tall seatpost, probably 500mm.

I know that the comotion telescoping thing would probably work, but I think it might be a larger diameter. Also, I don't really want to shell out $100 for it.

Does anyone know of a source to get what I'm looking for.

Lastly, you might be thinking, why not trade stoker positions, the seattube is taller in the middle and would accomodate a taller rider. This is correct, however, we want to leave the little one in the middle because there are lots of times when it is only the two of us on the triplet. And it would be a real pain switch back and forth all the time.

Thank you very much.
djembob02 is offline   Reply With Quote
Old 09-17-07, 10:22 AM   #2
mrfish
Senior Member
 
Join Date: Dec 2005
Location: London, UK
Bikes: Trek T200 plus enough others to fill a large shed
Posts: 562
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Hmmm... a quick google search revealed nothing. However I think it would be worth finding out with some other google searches what size seat post Brompton, Birdy, Bike Friday and Dahon folding bikes use as they are very long. I think though most are bigger than 27.2mm. Alternatively there are unicycle seatposts, but the problem here looks that the saddle attachment isn't the same as a road bike saddle.

Have a hunt around with google and see what comes up. You could be lucky.
mrfish is offline   Reply With Quote
Old 09-17-07, 12:43 PM   #3
Jinker
Senior Member
 
Jinker's Avatar
 
Join Date: Nov 2005
Location: Ottawa,ON
Bikes: Univega Via Montega, Nashbar Aluminum frame/105 roadbike
Posts: 642
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
BOOM!

http://www.downtube.com/product514.html

Googled for 500mm 27.2 seatpost
Jinker is offline   Reply With Quote
Old 09-17-07, 01:44 PM   #4
waterrockets 
Making a kilometer blurry
 
waterrockets's Avatar
 
Join Date: May 2006
Location: Austin (near TX)
Bikes: rkwaki's porn collection
Posts: 26,130
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I think you're approaching the limit of what's safe for an adult weight with a 27.2mm tube. Anyway: my favorite place to search for such things found a 420mm rigid and a 450mm suspension post.

http://aebike.com/page.cfm?PageID=30...ils&sku=ST0738


http://aebike.com/page.cfm?PageID=30...ils&sku=ST2528
waterrockets is offline   Reply With Quote
Old 09-18-07, 05:00 PM   #5
ricardo kuhn
Hacker Maximus
 
Join Date: Oct 2004
Location: Berkeley california
Bikes: less than I use to,, more than I need
Posts: 314
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
A seat with "Taller" rails like a Brooks or many downhil type seats, will provide you as much as 20MM more height.

Syncors use to make a really strong seatpost on a 425mm version, but they are dificult to find this days (Syncros is own by ritchey now and the new stuff sucks.)

IRD use to make a 450mm in the early 90', but then again if you find one will be at least $70

ps: I have the two of them for years and they are incredibly strong.

Last edited by ricardo kuhn; 09-18-07 at 06:56 PM.
ricardo kuhn is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 06:54 PM.