Front-Wheel-Drive Center-Steer Semi-Recumbent Bicycle

Step 5: Install the Front-Wheel Drive

Mount the fork of the frameset onto the axle of the drive wheel. It may be easier to fit the fork dropouts between the rear dropouts.

Insert a seat post into the front seat tube. Attach the top of the seat post to the stem of the frameset. I used two strips of sheet metal. Depending on the stem you use, you may wish to turn the stem around to avoid interfering with the attachment to the seat post.

You may change the height of the pedals by adjusting the insertion of the seat post.

Comments

[Woodenbikes]

Very cool bike! I ought to build one too. Perhaps replacing the sheet metal U shaped piece with a thicker piece of flat stock with a 5/16" hole for the stem expander bolt to pass through. Twist it 90 degrees and have another hole for the Seat clamp binder bolt to pass through. (or more elegantly and stiffer is to find a longer replacement for the seat post and flatten the top of it and drill a hole through which to pass the stem expander bolt.)

[sennomo]

Thanks! Your latter suggestion (about replacing the seat post) sounds right on the money for the stem I'm using. Stiffness is sorely lacking as it is, making the wobbliness a bit worse. I'm even considering adding springs to the fork to "encourage" the wheel to center.

[2 stroke]

ill weld a post diagonlay from the frame to the sem to stop the wobbly ness

[sennomo]

It might be difficult to remove the wobbling without blocking the steering.

[cheesemanlovesrobots]

love it mate ill probably do this and put 2 wheels on the back. so its a trike

[sennomo]

Good idea. The added stability will be worth the extra work.

[bob48220]

ingenious!