[Tigers] high speed generator pulley

Tue Apr 7 19:16:14 MDT 2015

Thanks guys for the additional info. I had always wondered about what the original generator pulley might have been. And I learned the hard way that the Tiger mounting bracket was different fro the stock 260 falcon one. Anyone need a stock 260 falcon generator mounting bracket?! 

Best regards, Gene 

----- Original Message -----

From: "D or G at sbc" <orr4sale at sbcglobal.net> 
To: "Mark Rense" <mark44124 at gmail.com>, genepadgett at comcast.net 
Cc: "tigers" <tigers at autox.team.net> 
Sent: Tuesday, April 7, 2015 7:48:17 PM 
Subject: Re: [Tigers] high speed generator pulley 

The Tiger generator pulley is standard Ford C2OF-10130-A, the Tiger mounting bracket is special. 

David 

From: Mark Rense via Tigers <tigers at autox.team.net> 
To: genepadgett at comcast.net 
Cc: 'tigers' <tigers at autox.team.net> 
Sent: Tuesday, April 7, 2015 4:53 PM 
Subject: Re: [Tigers] high speed generator pulley 

Also keep in mind the Tiger uses a special pulley that has a ¼” longer base to align with the drive pulley. 

From: genepadgett at comcast.net [mailto:genepadgett at comcast.net] 
Sent: Tuesday, April 07, 2015 6:59 PM 
To: Mark Rense 
Cc: tigers 
Subject: Re: [Tigers] high speed generator pulley 
Many thanks to all of you for sharing your collective wisdom. The expertise available through all of you here on the List, and the willingness to share it, continues to amaze. 
I did find what might be a useful under drive pulley. 
https://www.npdlink.com/store/products/mustang_pulley_generator_stamped_fins-100767-431.html 
But at $280 it does not make sense to spend that amount of money together with the $110 for the remanufactured generator, I would have $390 invested in a solution that is inferior to an generator look-alike alternator for about the same amount of money. Plus something tells me that the pulley may only be 3.75 inches in diameter, whick would onlu give me about a 12 percent speed reduction. That is based on what I see for $900 on ebay: 
http://www.ebay.com/itm/Ford-Mustang-AC-Cobra-OE-Restored-Fomoco-HIPO-Generator-Dynamo-/350893612053?hash=item51b2e39c15&vxp=mtr 
Cost aside, I had not factored in the possibility my 347 may need a pusher fan for cooling in very hot, slow speed weather/driving conditions. So far in 80 degree weather last year, the griffin radiator, 6 blade fan and reduced diameter pulley keep things nicely in the desired 195-205 degree engine temp range. Have not had a chance to see how things go under more stressful conditions. Thanks Mark L for mentioning a cooling aspect I had not thought of. Hate to have a generator setup that will not drive a pusher fan near idle if it turns out I need one. 
So for the time being I will just stick with the new generator and stock pulley. We will see it it lasts through its one year replacement warranty.! 
I learned a lot through asking the questions, thanks again everyone for sharing your knowledge. 
Best regards, Gene 

From: "Mark Rense" < mark44124 at gmail.com > 
To: genepadgett at comcast.net 
Cc: "tigers" < tigers at autox.team.net > 
Sent: Monday, April 6, 2015 5:35:02 PM 
Subject: RE: [Tigers] high speed generator pulley 
I don’t think the Hi-Po pulley has the same offset as the Tiger pulley, you will have to redo the mounts if that is the case to get the belt aligned. 
I’ve been through this dilemma on Tigers and other old Fords with generators. They were marginal when five grand was the upper rev limit, today most modern engine rebuilds are good for 6500 or more. Mechanically the generator is not really designed to spin at high speeds very long (Tigers run around 3K at 70), the bearings will overheat and spall, the brushes float and arc, the commutator breaks down, and then really ugly things begin to happen. Going to the Hi-Po larger pulley helps but you now have a lack of current at lower speeds from a 25% or so reduction in rpm. The combination of your headlamps, tail lamps, gauges, fuel pump, and ignition will consume around 270 watts, that’s 20 amps at 13.5 volts, and the generators I’ve had rebuilt might pump out 25 amps on a good day at max rpm, but at cruising speeds you’re lucky to get half that. Add a GPS, cooling fan or other accessory and you will run out of juice. 
So what’s the option? Obviously an alternator is the way to go, even under-driven they put out three times the current. But they look so modern. As an alternative I have now installed three PowerGen alternators that look just like the generator. They can generate over 30 amps at idle and are good for 7000 rpm engines. They ain’t cheap but they look just like the OEM generator. They make a one-wire and a two-wire version, the Tiger offset pulley bolts right up. 
http://www.summitracing.com/parts/PWM-82101/ 
The pictures are from my car. 
Bugz 
From: Tigers [ mailto:tigers-bounces at autox.team.net ] On Behalf Of genepadgett--- via Tigers 
Sent: Monday, April 06, 2015 2:57 PM 
To: Tiger's List 
Subject: [Tigers] high speed generator pulley 
Hi All, 
In the book Performance Tuning the Tiger there is mention and a picture of a larger than stock generator pulley which slows the generator down and makes it happier to be run at higher motor RPM's. Call me crazy, but I would like to find such a pulley and keep using a generator for the totally stock look on my higher reving 347 motor. BTW, my current pulley is about 3.25 inches in diameter. 
My current generator needs to be replaced and I have a remanufactured one on order. It comes without a pulley. So as long as I have to put a pulley on it, I am thinking if I could find a la rger diameter one that would fit, why not? 
I know there are alternators now available packaged in a generator looking style case but I really do not want to go there at the present time. 
So does anyone know anything about that larger diameter generator pulley mentioned in the book? A part number? Maybe it is stock for some of the other generators back in the day? 
Any and all info would be greatly appreciated, and thanks in advance. 
Gene 

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