I have looked up the 13-32 parts list and manual and haven't found that design, but I'll just work from the information you have posted. It appears to have a Ferguson-like pivoted front axle, which requires some way to limit the movement of the axle on the pivot. The easy way would seem to be to have a stop on the frame for the top of the axle to hit, but you could do it with a slotted guide such as your diagram shows. You then need a rod or bolt that is rigidly attached to the axle, and slides in the curved slots in the guide plate, with its travel limited by the ends of the slots. Normally that rod or bolt would be attached strongly to the axle, and would just have a pin-projection to slide in the guide. That means it would be a special part, not a bolt, and the part that projected through the guide would just be a smooth pin. Has someone lost or thrown away the special parts, and stuck in a couple of bolts, somewhere along the line?
Addendum: I've now found the parts list your main illustration above comes from (it's Illustration 5 in "Evolution 14-32.pdf") but I can't find your slotted plate. Can you give me a reference for that please? I hope it will also show these special parts.
Last edited by grumpy; 01/05/11 05:07 PM. Reason: Addendum
