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 04-28-08, 03:44 PM   #1
prettyshady
12345
Thread Starter
 
Join Date: Feb 2008
Location: south france
Bikes:
Posts: 1,249
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
How important are tandem specific wheels?

I brought an old tandem that looked a real mess. It didn't take long to get the chain and gears running but the back wheel was really out of shape.

For a test ride we used some wheels from a regular road bike (36 spoke, 23-622 tyres, quick release), is this a bad thing to do? The wheels that came with the tandem have steal rims, not quick release, 40 spokes and normandy hubs with the date stamped '78'. I've put some fresh 28-622 tyres on and straightened the rims up but the axle on the drive side is a little bent.

I'm not sure if its ok to ride on the bent axle, or if I should try and bend it back? Is it worth trying to replace the axle, or should we keep riding on the non specific tandem wheels? any ideas? thank you

photo of the bike
and in a fiat punto
prettyshady is offline   Reply With Quote
Old 04-28-08, 04:04 PM   #2
uspspro
Tandem Mountain Climber
 
Join Date: Mar 2007
Location: San Mateo, CA
Bikes: Calfee Tandem, Custom CAAD9 BB30, 90 Santana Arriva Tandem, 02 CAAD4 errand bike, 87 Cannondale "Black Lightning"
Posts: 4,101
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Isn't the axle spacing on your tandem wider than a road bike wheel?
uspspro is offline   Reply With Quote
Old 04-28-08, 04:29 PM   #3
prettyshady
12345
Thread Starter
 
Join Date: Feb 2008
Location: south france
Bikes:
Posts: 1,249
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
The tandem wheel fits in my old road frame fine, and I think the regular wheel fitted the tandem with out too much of a push
prettyshady is offline   Reply With Quote
Old 04-28-08, 04:50 PM   #4
brewer45
Senior Member
 
brewer45's Avatar
 
Join Date: Jul 2007
Location: Salt Lake City, UT
Bikes: Co-Motion Speedster, Giant FCR2, Surly LHT, Surly Crosscheck
Posts: 254
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Just remember that the rear wheel supports 75-80% of the weight of the team. So if your team weighs 300 lbs (about 21.5 stone given your spelling of "tyres"), the rear whell needs to reliably support about 225-240 lbs (about 16-17 stone). That would be a Clydesale/Athena rated rear wheel.

Cheers!
__________________
2008 Red Co-Motion Speedster Co-pilot (Redster)
2009 Surly LHT (captain's commuter)
2009 Surly Crosscheck (stoker's road bike)
2007 Giant FCR2W (stoker's commuter)
1980's NOS Legnano (stoker's toy)
1970's Stella rebuilt as fixed-gear (captain's toy)
brewer45 is offline   Reply With Quote
Old 04-28-08, 06:25 PM   #5
TandemGeek
hors category
 
TandemGeek's Avatar
 
Join Date: Jan 2002
Bikes:
Posts: 7,208
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Tandem specific wheels are relative... The bigger the team and the more demanding the riding conditions, the more robust the wheels need to be. Let me over-generalize...

At the low-end of the spectrum are 'cruiser tandems' used on bike paths, where just about any reasonable single bike wheelset will likely work just fine.

In the mid-ground, a couple with a combined weight of 280lbs that hammers on the flats and doesn't have to deal with demanding climbs and huge torque can also get away with using somewhat conventional single bike wheels and hubs.

However, if this same team needs to tackle 15% grades or have a monsterously strong sprint, then a stronger rear hub (engagement mech & axle) made for a tandem becomes very important.

A team with a combined weight of 400lbs is headed to the hills, then wheels with 40 or 48 spokes and a tandem-specific hub becomes essential.
TandemGeek is offline   Reply With Quote
Old 04-28-08, 07:03 PM   #6
StephenH
Uber Goober
 
StephenH's Avatar
 
Join Date: Sep 2007
Location: Dallas area, Texas
Bikes:
Posts: 11,224
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
"At the low-end of the spectrum are 'cruiser tandems' used on bike paths, where just about any reasonable single bike wheelset will likely work just fine."

I'm not sure about modern low-end models, but I've got an old Huffy tandem, and the wheels on it are definitely some heavy-duty wheels- not your normal old bike wheel.
__________________
"be careful this rando stuff is addictive and dan's the 'pusher'."
StephenH is offline   Reply With Quote
Old 04-28-08, 07:20 PM   #7
TandemGeek
hors category
 
TandemGeek's Avatar
 
Join Date: Jan 2002
Bikes:
Posts: 7,208
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by StephenH View Post
I'm not sure about modern low-end models, but I've got an old Huffy tandem, and the wheels on it are definitely some heavy-duty wheels- not your normal old bike wheel.
...and some of the current tandems are fitted with wheels, forks, and frames that can easily handle teams weighing 400lbs. So, even if you and your beloved only tip the scales at a combined 290lbs and will be riding across Florida, you'll end up with the same tandem.

So, like I said, what constitutes a wheel that's 'strong enough' will depend upon a lot of things. Mind you, there are lots of teams riding wheels that are over-built for their needs, just as there are some teams riding wheels that may not necessarily be as robust as they should. In the case of the former, the team is carrying a bit more weight and drag than they need... in the case of the latter, poor handling, broken spokes, or a bent axle are all possibilities.

Last edited by TandemGeek; 04-28-08 at 07:50 PM.
TandemGeek 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 03:17 AM.