>
>> Changing the diodes in an alternator will increase the output only if
the old
>> diodes were BAD!
>> It is only necessary to change the stator winding in most alternators to
get
>> a higher output. It is not necessary to change the rotor in the 80 amp
>> alternator on the GMC.
>> I do not believe that the diodes in the 80 amp alternator will stand a
>> CONTINUOUS full output AT 80 amps much less 100.
David,
One of the differences in the GM MH alternator vs most automotive
alternators is that the GMC OEM unit was rated at continuous output. Most
automotive alternators specify peak output, with the continuous rating
somewhere near 80-85% of the peak.
Marine alternators intended for use as battery bank chargers are often
rated according to the continuous output. These alternators have
comparatively better cooling, heavier frames, etc. Some put the diodes
outside the frame to improve cooling and accessibility.
As the amperage capacity goes up, the ability of our OEM belts to drive the
alternator becomes problematic. A better solution is to use a serpintine
belt like Heinz, or go to a gear driven system.
Ideally, I'd like a much larger capacity alternator on my coach sized as
follows:
1. 50A for recharging my house battery bank (2 golf car batts)
2. 12A for the headlights
3. 20A for marker lights, etc
4. 5A for stereo
5. 13A for PC
6. 12A for recharging the engine battery
7. 5A for misc house systems
Total of 117A
Since I prefer to use less than 85% of the capacity, that means about a
150A alternator.
Henry
Henry Davis Consulting, Inc / new product consulting
PO Box 1270 / product readiness reviews
Soquel, Ca 95073 / IP reviews
ph: (831) 462-5199 / full service marketing
fax: (831) 462-5198
http://www.henry-davis.com/ http://www.henry-davis.com
