could be the mounting ears they are talking about cause that is what i did with mine just used a grinder and a longer strap to go around the alt change pullies
good to go

 

Here is a pic of the Certified bracket
..:: Certified Auto Electric - Products ::..
If you check their site, they have several different brackets as well as the pulleys.
I am seriously considering buying the whole set up from them, has anyone here dealt with Certified Auto Electric before?

 

I did, but as I said, my setup is a hybrid. Their price is hard to beat and I wanted a turnkey setup. (in fact I think the price is lower now than when I bought 6 yrs ago)

 

So you would recommend them?

 

Yes, but I'd ask them if their slingshot needs modification for use on a truck.

 

Well I email four co.s that offer the slingshot alt. conversion bracket and got two responses so far. Heres the one that made sense:

> Hello,
> I am wondering if the brackets you offer are made to fit the 1952 Ford F-1 half ton pick-up with the 239 flathead V-8. I have viewed these brackets from several sources and some warn that they are for use on pasenger cars and not for use on wide belt trucks. One site also mentions long shaft water pumps being a problem. I believe that the belts and pulleys on the passenger cars were 3/8's and the ones on the trucks are 5/8's. Not a whole lot of difference, but maybe you guys know about this for sure? Any info will be much appreciated.
>

From certified auto electric:

Our 1949-53 brackets will fit your truck. As for pulley size cars changed from 9/16" wide belts in 1950 and trucks were late 1951 into 1952. The tall water pumps were used on all Ford cars, trucks and Mercury engines starting in 1949. Prior to this they used short pumps. Looking at the generator mounting. 1949 and newer the generator sits in a saddle mount. 1948 and older the mount is part of the housing
>
>

 

Well, since none of the other co.'s ever contacted me via e-mail, I called them on the phone. The "flathead tech" at speedway assured me that their note about wide belts was refering to the Ford truck. He said that the designer had made the bracket for the more narrow belt car engines not knowing there was a difference.
So, I called Certified Auto Electric and spoke to one of the owners. He repeated the info from the email (earlier post) and said he thought their brackets were different. He was not sure so he suggested we measure. I measured from the Gen. bracket (front) to the center of the pulley and got about 2.5 inches. He measured from the slingshot (front) to the center of an alt. pulley and got about 2.75 inches. We were both fumbling and maybe off, but thats a quarter inch difference and the same difference between 3/8's and 5/8's (the difference between the car and truck belts). Back to the drawing board.

M Joiner

Update: Just for future reference the correct numbers are: Gen. bracket (front) to center of orig. pulley is 2 7/16.

 

Just a thought here, did you find out if the Gen bracket and the slingshot are both the same thickness? Probably a better point of measurement would have been from the Back (engine side) of each, in case there is a difference.
I have not seen one of the slingshots myself, but looking at the pictures on the website, they look thinner than my generator bracket.
Another point is that in their photo on eBay it appears that they use spacers to mount the alternator to the slingshot and you could probably cut a 1/4" off the spacers if needed.
1949-53 Ford Flathead Alternator for 3 Stromberg 97's : eBay Motors (item 310197378061 end time Feb-04-10 12:42:28 PST)

Oh, one more thing, you are aware that the generator has two mounting positions right?

 

Harley's right, the correct measurement would be from the back of the bracket; that is, the front surface of the intake manifold in the "slot". On mine, with narrow belts, "X" = 3.5". (This is looking down on the bracket from the top) PS, mine has 1-3/8" long spacers like shown on the ad. Y think you would want to make them longer, not shorter, for wide belts?

One thing never discussed is that these really need a brace back to the manifold IMO.

 

According to CAE, his bracket base is 7/8 inches thick and thats the same as my gen bracket. And cutting off the spacer is what the other sites (that mentioned the problem in the 1st place) recommend that truck owners do. But, then you also have to cut down the other side of your alt. (which is thicker to match).- See pasted/copy quotes from said co.'s in previous post.

As far as moving it out for wider belts, it is kind of hard to get your brain wrapped around. But, if you think about the bracket being designed for the more narrow belt car, which would put the center of the new alt. pulley(3/8) where the center of the original gen. pulley was... and then think of using that same bracket/alt. setup, but with a wider pulley (5/8).... everything is the same except the center of the wider pulley will now be farther out to the front of the truck. In other words the backs of either pulley would have the same position from the engine side, but the wider pulley (and therefore its center) would be out farther to the front.

I have my gen. off the truck, but I may put it back on and compare to Ross's numbers. Also may start a new thread to see if anybody else has used one of these brackets.

Whats the other mounting position?

M Joiner

 

If you look at the mounting bracket, there is a pin in the bottom. The generator has two small holes, front & rear, allowing two different mounting locations.

 

Very interesting. I only saw one, but I wasn't really looking for it. I wonder if it had something to do with belt sizes on different applications? I just got in contact with the only other person I can find that used one of these brackets and he has sold the truck but still has pics. Looks like his was working but I don't know where he got the bracket except Ebay a long time ago. I've asked if he can remember any more details.

Mitch J

 

Just to be clear I did not have any trouble with my alignment of the belts on my setup I just couldn't get the belt on.

 

Pete,
I was reading post looking for alt. conversion bracket info. Did you use the slingshot, or wishbone type? I've been told that some won't work with the wider belts (5/8's) without trimming the alt. and supplied spacer. Any info much app.

Thanks
M Joiner

 

Is that a 6v or 12v gen? Later gens had holes for Y-blocks and for that matter, people used to drill hole in gens that didn't have them. I've never seen more than one hole on a flathead (6v) gen. Could 6-cylinder gens have a different hole position? I've no idea how they even mounted.