Went for my evening ride a couple of days ago and noticed my drive belt was slipping a wee bit in 3rd gear when stress on it is the greatest. Beat it back to the shop and started rummaging through 20 years worth of springs salvaged from appliances, motorcycles, burned out tools, etc. Found one identical to the one already installed except the gauge was slightly larger making it stronger. So I swapped them out and while cruising through an adjacent neighborhood on a test drive, I realized reaching down to my crotch for the shifter was not ideal.
I decided to duplicate the suicide shifter on pre-war Harleys and Cushman scooters. The placement of their shifters next to the fuel tank is intentional to minimized the movement from handlebar to shifter and back. I pulled a worn out hood lift support and to recover parts for my new shift rod. A little tip to those of you who have a little Sanford & Son streak like me-support struts are gas filled and are under tremendous pressure. When I was cutting into the housing to salvage the rod, I assumed the gas would leak out slowly. Man was I wrong! As I was grinding away the think exploded like a roadside bomb, shooting the end across the garage. Lucky for me, it was aimed at an empty wall, so nothing was damaged.
Anyway, the rod from a strut is the finest steel, much better than steel rods you get at the hardware, plus it's threaded on the end so it's simple to install a shift knob. After fabricating the new rod with proper length and bend, I cut the shaft on the Shimano indexed shifter and drilled a hole for a mounting screw for the linkage between the new shifter and the Shimano one. The Shimano unit had to be turned upside down on the crossbar so it lined up with the new linkage. The new shifter clicks crisply through the index points on the Shimano unit and I retained all of the clever adjustments between the original Shimano shifter and the 3-speed hub. The linkage is simply a section of scrap 1/4" steel tubing flattened on both ends for pivot points.
Here is a photo of the discarded portion of the original Shimano shifter.
Here is a side view of the new setup. Sorry for the distracting Cub Cadet in the background, my room is limited. The shift knob has been in my parts bin for 50 years. It came from an old VW Scirocco. If anyone remembers, these cars had an engine about the size of a 6-pack but it would scoot pretty good with its 5-speed tranny. Mine was white with all red interior that made it look like a French Gentleman's Parlor! Anyway, when I sold it I kept the shift knob for posterity and now it's getting a second life. Note the rusty/crusty J.C. Higgins fenders on the tractor seat!
Here is the shifter in 1st gear.
One click to the rear for 2nd gear.
Another click back for 3rd gear.
View of shifter from the saddle.
And for you sharpies who are wondering what happened to the new dash, I can only say life is full of distractions. That project is coming up next.