Any bicycle with more than one person simultaneously providing power. Includes trandems and other unusual variants.

learn more… | top users | synonyms

5
votes
1answer
479 views

Why is it called a “timing chain”

Why is the chain connecting the front and rear cranks of a tandem called a timing chain. This brings to mind big-block V8s and leaky timing chain covers that plagued my younger years. What's the ...
1
vote
1answer
125 views

Can anyone identify this Tandem bike I restored from a junk yard?

This is a bike that I rescued from an abandoned junk yard in central California. It was terribly rusted, and I think I am crazy for spending the amount of time and money I did to restore it. I often ...
1
vote
1answer
86 views

What kind of crank extractor do I need

I'm trying to swap the cranks on our Thorn tandem and would like to know what kind of crank extractor (if any) I need for the job. Is there a way to tell from this photo, before I've taken it all ...
8
votes
1answer
298 views

Help please to identify my Tandem

I have just purchased an old tandem, but don't know the make or year. Can anyone help me to identify it. The frame is steel and it has a frame number of 452599. There are no decals fitted but I attach ...
4
votes
1answer
124 views

Tandem team with large height disparity - possible?

My wife and I would like to start riding tandem. I've been reading about it and am worried that we are not physically eligible. She's 165cm, I'm 195cm... I've considered buying a baby trailer and ...
5
votes
2answers
439 views

Can I carry my tandem on a bumper carrier?

I would sometimes like to transport my tandem by car, and it would be convenient to use one of those "strap-on" bumper carriers. Is it feasible to use this type of carrier?
3
votes
0answers
127 views

Claud Butler Tandem - transmission issues

I'm in the process of stripping a SWB Claud Butler tandem so I can get it repainted. There are a couple of things I need help with.... a) Can you fit a front mech to the bike, and if so, are there ...
10
votes
1answer
504 views

What's this? Photo of bicycle with pedals by the rear wheel

I just stumbled upon this photo of what appears to be a reasonably normal citybike, except it looks like it has a second set of pedals at the rear wheel. source Anybody knows what it is?
3
votes
1answer
471 views

What are the alternatives to SwissStop Blue v-brake pads

We've got a tandem with Rigida Andara CSS tungsten carbide rims and Swisstop Blue v-brake pads. We're happy with the performance and life of both of these over the last 1000 miles. The problem is ...
2
votes
3answers
334 views

I unscrewed the lockring, and *both* BB cups rotated - what's going on?

I'm fixing up an old tandem, and the cup-and-cone bottom bracket at the front sounds very gritty, so I picked up my c-spanner and applied it to the lockring. With a bit of effort, left cup and ...
7
votes
4answers
265 views

Help needed identifying mystery screws on 1940s tandem

My tandem has two small screws above each bottom bracket, one on each side (so four in total). I've not seen them on any other bike, and I can't figure out what they're for! Suggestions so far have ...
1
vote
2answers
257 views

Can a tandem's front bottom bracket fail catastrophically?

Many tandems have a front bottom bracket that looks like this: The front bottom bracket is mounted off-centre in an aluminum shell called "the eccentric." When the pinch bolts shown in the ...
5
votes
2answers
354 views

What is the common “vocabulary” for the captain and stoker to communicate?

My wife and I recently rented a tandem for a day. I found that, because everything needs to be communicated -- starting, stopping, changes in cadence, shifting (which might cause changes in cadence), ...
2
votes
3answers
609 views

Where Can I Find a Single Right Front Crank Arm for a Tandem?

Among the bikes in my stable is a department store tandem that really isn't worth much, but would be enjoyable to ride with my wife. Like many department store bikes this one was not assembled ...
3
votes
4answers
278 views

Why is the rear wheel of my tandem bike skidding?

We have recently bought a tandem and the rear wheel skids out when riding. Any idea why this happens? Comment below: When we are riding along in a straight line and there is an uneven surface it does ...
6
votes
4answers
332 views

Tandem for limited space?

I really enjoy cycling, but haven't been doing much lately. My wife also enjoys cycling, but had a bad crash a couple years ago on her fast road bike and now will only ride her old (really slow) ...
10
votes
2answers
1k views

Tandem position - front or back

My ride buddy and I were "volunteered" to ride a tandem bike for a 40 mile, somewhat hilly, charity ride. We're running into the issue of who should be in the front on the tandem. Both of us are ...