The Chopper Compendium

Started slotting the drive gear on the sporty pump. Strangest setup I've ever made. An end mill would polish it a little This was actually pretty quick. I started grinding the teeth off and something broke in the lathe power feed so I'm headed in the lathe repaiir direction next.





Presto a .170" X .330" slot.


Dusty

Band aided the lathe back together maybe good enough to last until the new parts get here. But for sure long enough to get rid of those pesky gear teeth and make it fit into the adapter.

I now have a Sportster oil pump that drives by a slot and tang.

Dusty

This ought to make all the pristine parts restoration crowd cringe. Grinding the end off the front cam to get to the distance I need to grind the tang that will fit into the slot in the timer drive I'm going to make.
Dusty

Got the drive tabs ground onto the cams and the cams in place hopefully for a while. As far as I can on the adapter until I can until the timer is built and I just started making the shaft. If I was going to do anything with the bike other than race at Bonneville I would either shorten the pump or drive it with a worm gear and hang it to the bottom like the Sporty it came off of.

Dusty

i look forward to speed shots on the salt

Me too!
Dusty

Started building the timer.
A piece of 1" plate from the scrapyard and some quality time with a hole saw yielded this blank


A little time going in a circle yielded the basic shape.

Dusty

Got the bottom of the timer cut to shape and the guide plate relief cut in the side.

Dusty

Centering the A-dapter plates (as Johnny Cash said). Once they are centered I'll drill holes for the pins that will keep everything straight.

Dusty

Getting a little closer to shape. The timer rides on the outer bearing race that sets proud of the adapter with a slot and guide plate on the outside The reluctor mounting plates that allow each reluctor to be time seperately are made but the photo didn't come out.

Dusty

wow, just wow. thanks for putting this build up. it's great to read and learn from!

-dan

Got the timer mostly done today, I still need to set the timing with a meter on the pickups they are just visually aligned right now.



Dusty

Made a timer cap out of a tin can.

Dusty

Looking good as always.

Cut some 1/4 pipe fittings down to 7/16"-24pti straight threads

Then started running 3/8" nickel copper lines.




Dusty