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

1
vote
1answer
90 views

Incompatible front derailleur/crankset?

I recently bought a Tandem from the 90's and now trying to adjust the derailleurs. But, no matter what I do, I don't manage to properly set up the 3-way front derailleur. It either properly shifts ...
8
votes
0answers
177 views

Please help identify my 1940's (?) Tandem Bicycle

Please help me identify this tandem bicycle. Here's what I know: I'm pretty sure it's not a Schwinn, as all Schwinn bikes had straight frames without curves. From what I can tell, Hawthorne used ...
5
votes
1answer
423 views

Converting a tandem bike into a cargo bike or travel bike

I live in South america where we don't have any supply of modern two-wheeled cargobikes in the market, and I think converting a tandem bike by dismounting the stoker seat would be a good idea to have ...
1
vote
1answer
72 views

Baby seat for stoker's seat post on tandem

My wife and I used to both commute by bike, and now that our child is old enough to go on a bike, we'd like to do so again. She has already installed a front-mounted baby seat on her dutch-style bike, ...
2
votes
1answer
124 views

Adult tandem trike conversion

I'd like to take my old tandem and make it a trike with dally tires and rims on the rear. Has anyone done it. Thanks
0
votes
1answer
167 views

Help identifying tandem frame [duplicate]

I bought this frame in a state off eBay a fair few years ago and have recently got it working again. I would love to know what make or year it might be. There aren't that many his / her frames I've ...
24
votes
1answer
3k views

Why are tandem pedals mounted with the same position?

I have noticed that on all the tandems I have seen the pedals are mounted in the same position. i.e. while the front right one is up, so is the rear right one, and not front right up and rear right ...
6
votes
2answers
264 views

Fork Failure on Vintage Steel Tandem Bikes - Any insights?

I'm wondering if you guys can share any knowledge regarding fork failure on old steel tandem bikes. I just bought a 1988 Santana Elan tandem. It's in beautiful condition. I contacted Santana to ask ...
8
votes
2answers
600 views

Looking for bike trailer with pedals for a disabled, older adult

Is there a way to have a pull-along bike trailer w/pedals (similar to the child sized trailer in the pic above) -- but sized for a disabled adult?
8
votes
1answer
472 views

A two successive wheel trailer ; would it work? (followme-tandem)

TL;DR Why does the followme-tandem have the kids front wheel off the ground? I'm looking into the followme-tandem, which attaches a child's bicyle to the back of an adult's bike to make a trailer-...
3
votes
1answer
272 views

Who's the manufacturer and what year was this tandem bike manufactured? [duplicate]

The previous owner said this could possibly be a Schwinn:
2
votes
1answer
127 views

Updating brakes on a vintage tandem

I have a 25 year old Colnago road tandem on which I would like to update the brakes. The problem I am having is that they are 27" rims and I can't find a proper brake setup that will work. What ...
3
votes
2answers
180 views

How can I replace an oversized Chater-Lea bottom bracket with cotterless cranks?

I'm building a tandem at the moment. The frame appears to be threaded for a 1.45" Chater Lea bottom bracket: http://www.classiclightweights.co.uk/components/bottom-brackets.html I'd like to fit a ...
2
votes
1answer
93 views

Help Identify North Woods “6 Speed” Tandem?

I came across a North Woods "6 Speed" tandem at a yard sale, and am trying to track down its provenance: Unfortunately, the closest I've come across is Northwoods bicycles (no space), which are sold ...
3
votes
4answers
329 views

How tight should the tandem front chain be?

I have a Thorn Me'n'u2 triplet (three seater tandem), and was having a problem where whenever I tried to accelerate suddenly (either solo or with stoker(s)), the front chain seemed to fall off (...
3
votes
2answers
136 views

Rear-steer tandem with middle child saddle

I saw a bike for hire in France, and I'd like to track down more details on it or something similar. Unfortunately the hire logos covered the manufacturer logos and the bike was locked up to others (...
5
votes
3answers
560 views

How old is this rear steer skip tooth tandem?

How old is this Tandem Rear Steer Skip tooth ??
6
votes
1answer
288 views

timing chain keeps dropping/derailing only with partner

For a volunteer project biking with blind riders (NiewidomiNatandemach.pl), we've been partnered up and provided a tandem bike, that seems new enough and in good condition. Unlike the guy behind me--...
4
votes
1answer
564 views

Axle adjustment in Atom drum brake?

I have a tandem with a drag brake in the hub of the back wheel. It works perfectly, providing a steady drag when descending. QUESTION: Can I simply treat it like a normal rear wheel with cups/cones, ...
3
votes
3answers
480 views

Cranksets for tandem with internal gear hub

I am thinking about assembling a trekking tandem bike. I would like to use an internal gear hub and put both chains on the right side of the bike. I have some questions about the cranksets: What ...
3
votes
2answers
401 views

1970 Schwinn Tandem - How to move rear seat further away from handlebars

I scored a cool sierra brown, 1970 Schwinn Tandem 5 speed bike on craigslist (one owner even). I grew up in the 70s and loved the look of this bike, but I guess I had to turn 45 before I got one. So ...
30
votes
6answers
10k views

Is it difficult for one person to ride a tandem bike?

About 4 miles away from me, there is a bike hire shop that has tandems. I'm trying to work out the logistics of getting the tandem to my house to pick up the other rider. I'm an experienced cyclist, ...
4
votes
3answers
297 views

Pull Inexperienced Tandem Stoker?

Is it feasible for an experienced single seat cyclist to serve as captain of a tandem bicycle and effectively "pull" the stoker behind as if the said stoker was riding in a trailer? It's understood ...
20
votes
5answers
6k views

Why is a tandem harder to ride uphill than a single rider bike?

With equal power to weight ratio, why is a tandem bike harder to ride uphill? I have friends whose Cannondale tandem bike weighs the same as their single rider bikes combined. But they find it easier ...
3
votes
1answer
136 views

What should I check with set up of a tandem?

Particularly with reference to hired tandems, or when you're first setting one up. A bit of context: I hired a tandem today and went for a ride with my wife. I've been riding for about 20 years, she ...
0
votes
2answers
127 views

Trek T-900 Tandem rear hub

I have a Trek T-900 tandem that I bought used. It's probably about 12 or 13 years old. I'm having some rear hub issues with it, but I can't identify what hub it is. Trek's website and other ...
3
votes
2answers
844 views

Derailleur hanger moves when tightening quick release

I have an old Trek T-900 tandem that my wife and I ride quite a bit. It's got an 8-speed rear setup. It's a standard (tandem) 145mm rear-spacing with matching hub, but tightening down the quick-...
6
votes
1answer
581 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
390 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
495 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 ...
9
votes
2answers
737 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 ...
5
votes
1answer
755 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 ...
7
votes
3answers
3k 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?
5
votes
1answer
283 views

Claud Butler Tandem - add a front derailleur?

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 ...
11
votes
1answer
1k 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
1k 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
686 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
490 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 ...
2
votes
2answers
604 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 picture ...
10
votes
4answers
606 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
1k 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
482 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 ...
7
votes
5answers
645 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) ...
11
votes
2answers
5k 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 ...