I went to a local alternator shop and paid $8 to have a 2-groove pulley installed. I'm still only using one belt, but torquing it down as tight as I can has seemed to stop the squealing and I'm not having voltage problems anymore. Schweeet

William



1957 Ford Fairlane 500

292 Bored .30 over

Fordomatic

I think I bought it from Dennis Carpenter a few years ago. It was new (old-stock) That with the additional one for the power steering gives me 3 grooves.



I don't know if I really need to use both grooves but since i had them I thought I'd use them. I got the ALT from Autozone. I think it's for a mid 80's GM (Chev, Buick Olds etc.... I think rated at 90 or 100A .....)



OH. YOU mean the pulley on the ALT? I got it from EBAY. some outfit selling them. It was about $30 or so.

-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
1955 F-600/272/E4OD// Disclaimer: No animals were injured while test driving my F-600 except the ones I ran over intentionally!

---------------------
This post was created using OpenSuSE Linux x64 and Firefox

Where'd you get the dual belt pulley??? I was also thinking of looking into a LARGER pulley, which would allow more belt coverage on the pulley. But I'm also worried that it would cause charging problems...hmmmm

William



1957 Ford Fairlane 500

292 Bored .30 over

Fordomatic

Howdy,



I have those brackets. I am also using a 12si alternator with a dual groove pulley because I didn't want to have any slippage issues.





This picture shows the single groove pulley I removed and replaced with the double groove.



Since BOTH the 100A alternator and the A/C pump take a fair amount of torque I wanted to make sure I had double belts!

You will have to play with the spacers a little AND re-drill the mount where it bolts to the head below.



The upper pulley and shaft is my mock-up for the "high-mount" fan + clutch which I may bag altogether for a Flex-A-Lite dual electric fan system.







Cheers,





Rick


-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
1955 F-600/272/E4OD// Disclaimer: No animals were injured while test driving my F-600 except the ones I ran over intentionally!

---------------------
This post was created using OpenSuSE Linux x64 and Firefox

Yeah, I have a gut feeling that the bracket made wasn't long enough to compensate for pulley coverage, which is causing major belt pressure issues. I did notice that the alternator and compressor also seem to be a tad bit more forward than the fan and crank pulley..hmmmm

William



1957 Ford Fairlane 500

292 Bored .30 over

Fordomatic

Dont forget wire size, Wireing was sized for 30 amps, higher current draw will result in significant voltage drop, as in your original problem.

William

If your loss of current from the alternator to the battery is being caused by a slipping belt the early Ford Mustang with A/C used TWO belts to drive the alernator and waterpump. Could this system work for you? Pete

William;

I'm running the same set of brackets. I had to get the  big bottom bracket with the slot in it for belt adjustment completely re-cut. The slot did not have enough length to get the belt adjusted tight enough. Luckily, there was a company where I lived with a CNC Plasma cutting machine. I made a cardboard template of the bracket, but extended the slot. Below is a picture of the new bracket with the longer slot. After the bracket was made, there was ALOT of tinkering with spacers to get the belts aligned. This configuration only allows the alternator belt to contact about 1/3 of the pulley so you have to hope it won't slip. I'm using a "Tuff Stuff" 100 AMP 1 wire alternator and so far it's providing enough juice.

Rono

  Ron Lane,  Meridian, ID

It's definitely correct at the battery. Was a 3 wire and I converted it to a 1 wire. Was running to the voltmeter, but to double check, I rewired it to run straight to the battery. It's really dropping 2+ volts when the compressor is engaged. I'll try tightening up more, could just be major slipping I guess....

William



1957 Ford Fairlane 500

292 Bored .30 over

Fordomatic

When you added the alternator, did you do it as a 3 wire or a 1 wire? If your reading the output at the alt and not the battery, it may not be seeing the electrical load properly. When I added an alt several years ago, I used a 1 wire set up, and on my 'bird, I was down over one volt from the alt to the battery. Changed to 3 wires with the hookup at the battery, and it came right up to 13.7 at the battery. I also just added a/c, and the compressor and (in my case) electrical load for the fans, evap and condenser, was way more than I expected. I really saw it in the idle. My setup is classic auto air, but the brackets look very similar if not the same. No idea on the noise, except the belt as mentioned.

miker
55 bird, 32 cabrio F code
Kent, WA
Tucson, AZ