Handlebars

After I got the ride height about where I wanted it, I then started working on the handlebars. As a reminder, here are the rules specific to handlebar location for the class:

...
2.G. HAND/ FOOT CONTROLS
Hand controls (clutch and brake) must have a minimum 1/2” ball
on the end. Flattening of the ball end is acceptable, however all
edges must be rounded. All control ends must be an integral part of the lever. Foot operated controls must pivot independently. Foot throttle
must have toe clip with return throttle. All controls are subject to
scrutinizing. Riders in the riding position must have 10” between
thumbs. All handlebars must extend outside the fork tubes at a
minimum of 6” (streamliners excluded). Riders may be asked to
demonstrate their ability to navigate with the current controls.
Stops to steering must limit riders hands from touching the fairing
or tank at full right or left turns. A hydraulic dampener cannot act
as a fork stop.

and from the Modifed Frame opening paragraph

The lowest part of seat and handlebar grips must not exceed
an imaginary line drawn between the tops of the rims.
...


So, the bars have to extend at least 6-inches wider than the fork tubes, and there must be 10-inches between the thumbs when gripping the controls. And the position of the hands have to be higher than the top of wheel rim when viewed from side.

I quickly realized that I wanted to mount the bar much lower and farther ahead than could be accomplished using the stock handlebar clamps, to allow a much more stretched out seating position. As it happens there are several bolt locations on the front forks that would be suitable for mounting a plate too, which could then have a set of standard fork clamps. This was my solution:


Steel plate cut out to fit into the open space between the front fork tubes, bolted solid with 5 bolts. The handlebar clamps came off a Honda S90 parts bike, as did the 7/8" diameter handlebar.


I cut about 4-inches out of the center of the bar, then cut about 4-inches off each end. I'm left with roughly 11-inches between thumbs, while the bar extends a tad more than 7-inches past the fork tubes. And yes, there is clearance between the top of the tire and the steel plate at full compression of the front suspension.


Next up will be foot pegs and rear brake lever.

Chris H.