Flathead starter question

I recently converted my '50 Ford from 6v to 12v. I put a rebuilt starter on it, converted the generator to 12v, etc, and the car has started very efficiently since. Now I have a problem - when I hit the start ****on I get a heavy click but no start up. Prior to this happening I thought the starter sounded like it was turning over way too quickly, but it worked. My question now is this; have I burned up the starter relay or the starter? Or something else?

 

If you did not change the starter relay to 12 volts then that is most likely the problem. More than likely burnt it up. Basically, change everything to 12 volts other than the starter itself. And limit the time engaging starter if engine is not starting easily.

 

we have two flatheads converted to 12 volts and still use the original 6 volt starters, keep a spare bendix spring on hand YOU WILL NEED IT

 

Bendix spring, they slam in hard on 12 volts.

 

Or you can put on a gear drive starter. They are 12v and have the solenoid built in.

 

Put a gear drive starter on and don't worry anymore

 

Byp*** the starter solenoid and see if the starter behaves correctly. The old style solenoids are actuated through the ground and not through a hot wire as you may have thought. If it was operating correctly after your 12 volt changeover initially. Just double check all your solenoid connections. Chances are you just have a ground continuity issue.
Another starter option is to install one of these.... I've use one for years. Alittle tricky getting it into position but they work great.

http://macsautoparts.com/early-v8-f...t-60-hp-b11350m/camid/F30/cp/JS0R3CHL1129454/

 

Let us know what the problem is when you find it.