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Alternators & Regulators - what is the difference between Fo

 
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Peter(at)sportingaero.com
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PostPosted: Sat Jun 16, 2018 1:51 am    Post subject: Alternators & Regulators - what is the difference between Fo Reply with quote

Hi All,

I wonder if anyone can help me determine the suitability of a regulator to an alternator as I need to install a new regulator?

I have a Ford DOFF10300JR alternator on my RV-6 (15v/60A), the O-320-E2D came from a C172 and the original builder retained the Cessna installed alternator. I replaced the alternator 3 years ago. It has a generic 2 ” square regulator which has failed – outputs only 0.05v when master is on and engine is not running.

I was going to install a B&C LR3C-14 regulator, but it will take a week or so (and $$) to ship across the Atlantic. I have now been offered a Lamar B-00371-1 regulator (http://www.lamartech.com/files/50018505.pdf) by a friend that will be here on Monday. I’m trying to figure out if this regulator will work with my alternator. Can anyone offer any advice?

I have a separate crowbar OV protection and a low volt monitor so do not need these functions – just the basic alternator control. I think the main differences between voltage regulators/alternator control units are packaging [not an issue as I will have to drill new holes], connections [not an issue as I will have to carry some wiring changes] and additional functions [OV protection, under volt warning, etc – not required as already installed].

The B-00371-1 is listed as suitable for many Pipers (and many other aircraft, but not Cessnas), the typical alternator it is used with is a Chrysler ALY8520R.

I have been unable to find any information on the differences between the Ford and Chrysler alternators, and how their respective regulators might differ, does anyone know?

Regards, Peter


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