Cheap Short Wheelbase Wood Conversion Recumbent Bike

Step 5 Conversion Frame

Start by attaching two long 2x4's to either side of the frame. They should run from the seat tube, through the headset and at least as long as the front wheel (we'll be trimming later). Fasten with a C clamp.

Now take your crank arm (boom) and slide in between the two long 2x4's in front of the front wheel. Gently fasten with a C clamp.

Using measuring tape, measure the distance from the seat tube to the furthest point on the crank and adjust until it matches your x-seam. Make additional adjustments to allow the crank to clear the front wheel - always making sure you don't go beyond your x-seam measurement (otherwise, you wont be able to reach the crank). Don't forget that you can swing the boom out in an arc and/or move the boom up/down. Don't worry about chain clearance just yet...

---

Once you've found a position you like. Take your drill and make three pilot holes. Two through the boom/outer wood bits and one though the long 2x4's near the seat tube. Drill your bolt holes and attach your bolts, tightly. Compression is what holds this frame in place.

As a tip, it can be useful to sit in the frame and gently rest your feet on the crank - to ensure your xseam measurements are correct and adjust if necessary ;)

Comments

[nanundo]

This's my inspiration I wish do this with my self
thank you.