DIY: Simple Tandem Bike

Bikes Fun & Games
DIY: Simple Tandem Bike

This is a great instructable for making your own tandem bicycle. It is amazing how simple it is to make with just a bit of hacking and drilling. This is a lot cheaper than buying one since you can always pick up a couple of old bikes on Craigslist really cheap.

Make your own Simple Tandem Bike

22 thoughts on “DIY: Simple Tandem Bike

  1. sweavo says:

    Looks good if you don’t try to steer, like, for instance, you need to do to stay on.

  2. impossible says:

    Me and a couple of freinds made one of these before and it was impossible to ride, in the end we welded 2 bikes together.

    1. Marc de Vinck says:


      Out of curiosity, what made it impossible to ride?

  3. Captain Observant says:

    @Marc de Vinck: Look at the chain line to the rear bike. Unless the fork is welded in the steerer on the rear bike, preventing it turning, the chain will deflect sideways.

    And if you fix the middle wheel so it can’t pivot, then the bike won’t be able to turn.

    It looks cool, and it probably is eye-catching to ride, but it’d probably be better to simply mount up two bikes without the idler chain between ’em, and let each rider pedal independently.

    1. Marc de Vinck says:

      @Captain Observant

      So the Achilles Heel is the idler chain.

      I know that co-riders are fairly popular and seem to work well.

  4. RobinB says:

    Why stop at 2???

  5. Captain Observant says:

    After looking over the Instructable (doesn’t always cooperate at work), I see that they’ve bolted the fork through the steerer tube of the rear bike. And they admit it’s very difficult to turn around.

    Still, an interesting project, and probably really eye-catching to watch someone (try to) ride it…

  6. shecky says:

    Even if the rear fork/steering tube is immobilized to keep the chain from falling off, the whole thing about three wheels in line will make it difficult to steer, it seems. Normal tandems steer on two “pivot pints”, being the front and rear wheels. With three wheels, the rear two being fixed and inline, are acting as a single, very long, “pivot point”.

    I wonder if it would work if the drive chains for each bike were left independent and the stoker was allowed to turn? This would seem to fix both the steering and chainline problem, and be simpler to implement. The rear bike would act more like a trailer, it’s fork acting more like a trailer hitch

  7. Anonymous says:

    I built one of these yesterday. It did ok for a short while, but the two frames pivot against one another at the middle axle on any uneven ground. After a while this can cause the loosening of the nuts there. Some sort of bushing or bearing system is needed to allow motion without the axle coming loose. Be careful out there guys.

    1. Marc de Vinck says:

      Thanks for the information. Do you have any pictures or better…videos!

  8. Tandem Bikes says:

    A Tandem Bicycle Is Built For Two, But Not Twice The Price. Just like a normal bike, if you want to spend a lot of money on a new tandem you can get what you want. The frame is the most important and the most expensive part in a Tandem bicycle.

Comments are closed.

Discuss this article with the rest of the community on our Discord server!


Maker Faire Bay Area 2023 - Mare Island, CA

Escape to an island of imagination + innovation as Maker Faire Bay Area returns for its 15th iteration!

Buy Tickets today! SAVE 15% and lock-in your preferred date(s).