Super Bronc Progress

#1
Decided to put the narrow front end on until I can find the wider front rim. I have a running 9.5HP Tecumseh but the crankshaft is only 7/8”. I have a 7/8 to1” sleeve but need the keyway to 1/4”. I might attempt using my mill/drill/lathe to widen the keyway. I mostly use it as a lathe. Will see how it goes.
 

Attachments

#5
Installed new tires. It was a little hard to get the bead to seat but I finally got it. Loosely put it together to see what it will look like with the wide front end on. Still waiting for warmer weather to paint the forks. I need two 5/8-18 nuts and washers for the front but otherwise have everything.
 

Attachments

#9
We finally got some warmer weather so I was able to paint the wide front forks.So I started putting the Super Bronc together. A friend of mine made me a new seat cover, I made a new plywood base, I just have to staple the cover on, the foam is good. Any recommendations on installing seat covers? I was mounting the kickstand and the original holes won’t work unless I stack a bunch of washers. I mounted it in a single hole father back and that worked much better but I’m not sure if the chain will rub on the kickstand in that position. Anyone have the drilling template for the older frame? Thanks
 

Attachments

#12
I installed the Taylor muffler, seems to fit well and look good. I was hoping to install the Nelson muffler I had. It’s not stock but I had a plan to make it work. Using diesel heater exhaust pipe for the end would have worked decent I think. But it has a hole in it and needs welding and a bracket needs to be made. I’ve run out of time to mess with it. I also want to make a head stay like the newer Super Broncs but that will have to wait until winter now. I’m trying to figure out the best way to use this throttle linkage? Any suggestions? I made brake pins and jackshaft for the TAV they are working good.I need to finish this before June, so I can use it as a pit bike at Unadilla vintage motocross and cross country races I’m spectating at then.
 

Attachments

#14
Been so busy this summer haven’t had a lot of time to work on my Super Bronc. Had planned on riding it in our village 4th of July parade, that’s not happening. I’m trying to make it look as close as I can to the one in the ads. I did find a horn that looks very original. I made a bracket to mount it, I still need to cut the litt mounting screws or rivet it on. I got the TAV Comet cover mounted. Now I’m looking for a speedometer kit, if anyone has one please let me know. I found a VDO head that looks very similar to the original. But I don’t know what I need for a cable or drive. What was the original speedometer ratio, I think it’s marked on the drive and bottom of speedometer? Does anyone have the speedometer installation instructions, just a clear picture would be good. Thanks
 

Attachments

Last edited:
Top