I used a donor section of equal size and material from another steering tube.

The 20? fork is coming tomorrow. 

Hopefully have it built by the weekend.

I?ll do a better job documenting the build this time- in case anyone wanted to replicate the process.

I can?t believe I waited this long to correct the problem with this stiff fork and SUPER rigid CHASSIS.

The bike is now completely comfortable to ride.

I just mounted my 26? fork this morning.

I had to weld an extension to the existing steering tube.  The local bike shop (Bicycle Sport Shop in Austin) gave me a donor set of forks with a 1-1/8? straight steering tube.

I chamfered the edges of both and butt welded the tube to gain the extra length.

Bolted right up!

The ride is night and day. That frame ans fork were so STIFF- nearly shaking me off the bike if you hit anything at speed.

This setup allows you to actually ride over stuff and not notice it, and keep a straight line without deflection.

I?m building a setup from a 20? fat tire suspension fork next week.  I think this will work better in terms of height (the 26? fork choppered the bike out a bit.  Good for me because I?m 6?3?.  But a shorter person might not like it.

Let me know if anyone is interested in having a front suspension fork built- or getting instructions on how I did it. (Need a welder, chop saw, etc etc.

I was able to weld an extension onto the steering tube of a suspension fork and mount it on my RadWagon4. It is night and day for the ride quality.  No more jarring hits!

The fork is for a 26? wheel- so it choppers it out a bit.

I?m building a 20? wheel suspension fork next week.

Anyone interested in getting this setup for their bike?