61 Charging system
Thread Starter
Burning Brakes
Joined: Jan 2000
Posts: 812
Likes: 42
From: Dallas, TX
Thanks for all the help from all of you - amazingly prompt! Looks like the generator is the culprit. First thing I noticed was Field and Armature were reversed beween regulator and generator - hopefully that was not fatal to either component. The generator produces no voltage or current in any of the tests I have tried and I am informed the the prior owner that the regulatro was overhauled, but the generator has unknown history, so I figure it cannot hurt to throw brushes, etc at it. Hopefully that resolves the issue
Le Mans Master
Joined: Dec 2007
Posts: 8,000
Likes: 659
From: Puget Sound
I'm not sure about about 1956 but the 58-62 Corvette 4" pulleys are different than the one shown in your pics. The pulley is spaced out from the fan 3/16". Is that the ALMOST you are referring to? The correct repo. 4" pulley is readily available.
Jim
Burning Brakes
Joined: Oct 2004
Posts: 953
Likes: 27
Thanks for all the help from all of you - amazingly prompt! Looks like the generator is the culprit. First thing I noticed was Field and Armature were reversed beween regulator and generator - hopefully that was not fatal to either component. The generator produces no voltage or current in any of the tests I have tried and I am informed the the prior owner that the regulatro was overhauled, but the generator has unknown history, so I figure it cannot hurt to throw brushes, etc at it. Hopefully that resolves the issue
you'll need a good battery, a set of jumper cables and another jumper wire.
jumper the field 'F' terminal to the generator case.
connect the negative battery cable to the generator case.
connect the positive cable to the armature 'A' terminal. (connect to the generator first then the battery).
the generator should run as a motor.
it should draw ~5 amps and run at ~900 rpm.
Melting Slicks
Joined: Jul 2004
Posts: 2,454
Likes: 315
From: Scottsdale AZ
generators, drum brakes and Points.....Archaic
The good guys who caveat generators as OK if "everything is working properly" Like drum brakes, are correct, but unfortunately these 50 year old cars dont often fall into that category. Alternators work REALLY well, (notice how they were installed starting in 1963 and disc brakes work REALLY Well, (notice they were installed in 1965) so my opinion is that you will have nothing but trouble when you least want it if you keep your generator, same for the drum brakes. If you want to drive and enjoy your car a few MID SIXTIES upgrades will serve you Well......Alternator....disc brakes.....electronic ignition. Then you will have reduced frequent failure points in your car! Drive....enjoy
See Madelectrical.com for electrical upgrades (check out the relays)
Engineered components for disc brakes
and get a HEI from whomever you like!
http://fototime.com/inv/DA6D990661BC04B
See Madelectrical.com for electrical upgrades (check out the relays)
Engineered components for disc brakes
and get a HEI from whomever you like!
http://fototime.com/inv/DA6D990661BC04B
Team Owner
Joined: Aug 2007
Posts: 58,061
Likes: 7,146
Army
The good guys who caveat generators as OK if "everything is working properly" Like drum brakes, are correct, but unfortunately these 50 year old cars dont often fall into that category. Alternators work REALLY well, (notice how they were installed starting in 1963 and disc brakes work REALLY Well, (notice they were installed in 1965) so my opinion is that you will have nothing but trouble when you least want it if you keep your generator, same for the drum brakes. If you want to drive and enjoy your car a few MID SIXTIES upgrades will serve you Well......Alternator....disc brakes.....electronic ignition. Then you will have reduced frequent failure points in your car! Drive....enjoy
See Madelectrical.com for electrical upgrades (check out the relays)
Engineered components for disc brakes
and get a HEI from whomever you like!
http://fototime.com/inv/DA6D990661BC04B
See Madelectrical.com for electrical upgrades (check out the relays)
Engineered components for disc brakes
and get a HEI from whomever you like!
http://fototime.com/inv/DA6D990661BC04B
Melting Slicks
Joined: May 2000
Posts: 2,743
Likes: 146
From: Chuckanut WA
Anything mechanical can fail including alternators, disk brakes, and electronic ignition. Not knocking anyone that installs upgrades but really part of the charm of owning a piece of history is experiencing the operational characteristics and nuances these historic pieces exhibit. This "old tech" stuff was state of the art at that time and performed very well by the standards of the day. The old stuff is super reliable if maintained and is fun and rewarding to drive. 35 years without a generator, ignition, or brake failure is a far better record than I've enjoyed with many newer vehicles. Different strokes for different folks and I'll never slight someone for upgrading to newer technology but I for one find the "old stuff" experience enchanting and rewarding. It also gives you a good perspective and comparison to the the advances of engineering and modern technology. 
Team Owner
Joined: Aug 2007
Posts: 58,061
Likes: 7,146
Army
Not to stray too far off topic but some things don't hold "charm" for me in this regard. Cutting my fingers up on ignition shielding to change points/condensor when I can have an undetectable electronic ignition in place that I basically never mess with after installation makes sense to me. And adding a vacuum advance with current fuel prices makes sense. Likewise when you have to do a 'panic stop' (and this happens sometimes I don't care how much following distance you keep) its nice to have close to the same technology as the car quickly braking in front of you or to keep your braking ability after driving through a deep puddle. These are my only concessions from the original equip on my '61.
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Race Director
Joined: Nov 2002
Posts: 12,142
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From: Taylor Michigan
Burning Brakes
Joined: Oct 2004
Posts: 953
Likes: 27
i'd have to say that it may not matter either way. i've never done it with the field disconnected and had no adverse effects.
basically what happens during polarization is you draw current thru the generator in the correct polarity (direction of current flow). the most important thing is to jump the BAT to the armature (GEN).
any idea what that regulator in the pic is from?
basically what happens during polarization is you draw current thru the generator in the correct polarity (direction of current flow). the most important thing is to jump the BAT to the armature (GEN).
any idea what that regulator in the pic is from?
Team Owner
Joined: Aug 2007
Posts: 58,061
Likes: 7,146
Army
Obviously a "restamped" voltage regulator with incorrect information..
Seriously, I also have never disconnected the field lead when polarizing and never a problem. I'd have to check the '61 Passenger Car Manual but I'm almost positive it doesn't mention this either. Strange.
Seriously, I also have never disconnected the field lead when polarizing and never a problem. I'd have to check the '61 Passenger Car Manual but I'm almost positive it doesn't mention this either. Strange.
Race Director
Joined: Nov 2002
Posts: 12,142
Likes: 54
From: Taylor Michigan
i'd have to say that it may not matter either way. i've never done it with the field disconnected and had no adverse effects.
basically what happens during polarization is you draw current thru the generator in the correct polarity (direction of current flow). the most important thing is to jump the BAT to the armature (GEN).
any idea what that regulator in the pic is from?
basically what happens during polarization is you draw current thru the generator in the correct polarity (direction of current flow). the most important thing is to jump the BAT to the armature (GEN).
any idea what that regulator in the pic is from?
Race Director
Joined: Nov 2002
Posts: 12,142
Likes: 54
From: Taylor Michigan
Obviously a "restamped" voltage regulator with incorrect information..
Seriously, I also have never disconnected the field lead when polarizing and never a problem. I'd have to check the '61 Passenger Car Manual but I'm almost positive it doesn't mention this either. Strange.
Seriously, I also have never disconnected the field lead when polarizing and never a problem. I'd have to check the '61 Passenger Car Manual but I'm almost positive it doesn't mention this either. Strange.
Burning Brakes
Joined: Oct 2004
Posts: 953
Likes: 27
Race Director
Joined: Nov 2002
Posts: 12,142
Likes: 54
From: Taylor Michigan
There a really nice car Paul. The ride is much better than any early series Vette. And unfourtinately about 1/2 as fast under the best of conditions for both cars. 
Except there was a Paxton equipped option Bird and also a dual quad car valued way up with some rare Vettes. Comparison to Vettes would be the 75-82 years in my opinion. With the Birds styling beating out those Vettes. Another thing they are both difficult to get into with a taller person. I like the late model Vettes now because the 638 HP..
Except there was a Paxton equipped option Bird and also a dual quad car valued way up with some rare Vettes. Comparison to Vettes would be the 75-82 years in my opinion. With the Birds styling beating out those Vettes. Another thing they are both difficult to get into with a taller person. I like the late model Vettes now because the 638 HP..
Burning Brakes
Joined: Oct 2004
Posts: 953
Likes: 27
i always liked them as a kid. but, my dad brought home a '54 vette back in 1962. so it's been vettes ever since. the big 'advantage' back then over the birds was that vettes didn't rust. of course, the frame on the '54 rotted out real bad and i replaced it in 1970.
you're a detroit area guy; do you remember bill kennedy? he had a '55-7 t-bird. he always talked about the car etc. on his show...
you're a detroit area guy; do you remember bill kennedy? he had a '55-7 t-bird. he always talked about the car etc. on his show...
Thread Starter
Burning Brakes
Joined: Jan 2000
Posts: 812
Likes: 42
From: Dallas, TX
Back to topic? I did the test to run the generator from my charger and it spins I'm the correct direction but draws well over 20 amps and the pulley can easily be stopped with finger pressure. Makes me worry there is a short in the armature windings but maybe it is just brushes. Any thoughts?
Burning Brakes
Joined: Oct 2004
Posts: 953
Likes: 27
a battery charger is not the best way to test the motoring. but if you can stop it by hand i would say there is a possible problem. you should first try testing it with a battery. there are several checks that can be made with the generator apart. you should really get a service manual and start there.
almost any GM manual for a car with a generator would have the info you can use to check it out. there is a check for the armature which requires a "growler" that you can't do at home. you'd have to find a rebuilder with one of those to test it.
almost any GM manual for a car with a generator would have the info you can use to check it out. there is a check for the armature which requires a "growler" that you can't do at home. you'd have to find a rebuilder with one of those to test it.
Thread Starter
Burning Brakes
Joined: Jan 2000
Posts: 812
Likes: 42
From: Dallas, TX
Turns out it was the generator and FYI Bob Reams electric in Arlington TX did a fantastic job on an complete mechanical and cosmetic restoration, including going through my regulator to be sure it works. All is well now and thanks for the troubleshooting advice.
