Reproduction Parts for 1916-1964 Chevrolet Passenger Cars & 1918-1987 Chevrolet & GMC Trucks


Previous Thread
Next Thread
Print Thread
Rate Thread
Page 2 of 2 1 2
Joined: Dec 2011
Posts: 1,019
Likes: 3
ChatMaster - 1,000
Offline
ChatMaster - 1,000
Joined: Dec 2011
Posts: 1,019
Likes: 3
Hello Chev Nut,

Would you send me a copy of those instructions ?? Could my current 3 brush be up graded to this type of system ??


Dave
old cars are meant to be driven !!
VCCA # 047832
Joined: Jan 2002
Posts: 30,699
Likes: 141
ChatMaster - 25,000
Offline
ChatMaster - 25,000
Joined: Jan 2002
Posts: 30,699
Likes: 141
No, because it requires a generator that can safely put out 30 amps. The 1937 was onlly good for 20 amps.


Gene Schneider
Joined: Dec 2007
Posts: 4,021
Likes: 99
ChatMaster - 4,000
Offline
ChatMaster - 4,000
Joined: Dec 2007
Posts: 4,021
Likes: 99
Technically you could add the 2 coil 1938 regulator to your ‘37 system. The regulator would replace the cutout that sits on top of the generator. It would better control the voltage in the system to reduce the energy going to the battery.

Gene is correct that this change will not increase the amperage output of your 1937 generator. Generator output is a function of the amount of wire (windings) in the armature and field coils. Plus there has to be enough air flow to keep the generator cool.

You could adjust the third brush position on your 1937 generator to produce current well above the 18 amps that is is rated to produce. Except it would not do that for long. The most likely failure would be that the armature would get so hot that the solder between the windings and the commutator would melt.


Rusty

VCCA #44680
Joined: Jan 2002
Posts: 812
Likes: 12
Lou Offline
ChatMaster - 750
Offline
ChatMaster - 750
Joined: Jan 2002
Posts: 812
Likes: 12
. The standard generator for 1937 Chevys was the 3 brush, 17 Amp generator with a cut out and no voltage regulator. If you had Radio, Heater and the headlights on at night, you would quickly have a dead battery.
Chevy offered many upgrade options. One of which was a 12 volt alternator. (See first photo). Because Diodes had not been invented, rectifier plates were used. One of my 37 Chevys has a 6 volt alternator and 2 six volt batteries in parallel. With grille removed, you can see the rectifier plates and three wire regulator in second photo.
. Lou .
.

Attached Images
37Volt12.jpg July 2 Flx Q03 Alt.jpg
Joined: Jan 2002
Posts: 30,699
Likes: 141
ChatMaster - 25,000
Offline
ChatMaster - 25,000
Joined: Jan 2002
Posts: 30,699
Likes: 141
Besure to read my Sunday PM.


Gene Schneider
Joined: May 2021
Posts: 72
Shade Tree Mechanic
OP Offline
Shade Tree Mechanic
Joined: May 2021
Posts: 72
Thank you all for the input and discussion. I now have what I need thanks to members here on the site. Thank you all.

Jon Ketron


Jonathan W. Ketron
1937 Master Deluxe Business Coupe
Joined: Jul 2009
Posts: 302
Likes: 4
Backyard Mechanic
Offline
Backyard Mechanic
Joined: Jul 2009
Posts: 302
Likes: 4
Current regulator only operates when battery has low volts due to a run down condition to protect the armature. In normal use with a charged battery it does not function. Only the voltage regulator functions to keep the voltage at a preset value around 7.3 volts. The 3 brush generators maximum current was set by the position of the third brush. The manual states not more than 2 commutator bars between the negative brush and the third brush. That setting takes care of the maximum charging current for 3 brush generators.

Page 2 of 2 1 2

Link Copied to Clipboard
Support The VCCA!

Enjoy the forum? Become a VCCA member! The World's Best Chevrolet and GMC Club!


Member Photos
1964 Chevrolet Impala SS
1964 Chevrolet Impala SS
by DreamChevy, February 17
My 1933 Chevy 2 Dr. Sedan
My 1933 Chevy 2 Dr. Sedan
by 1939Chevy1, November 24
Back on the road 79 years later
2 1927 Chevrolet Trucks
2 1927 Chevrolet Trucks
by 1927TRUCKS, June 7
Who's Online Now
3 members (Mr87Monty, Shorty, wesb), 60 guests, and 20 robots.
Key: Admin, Global Mod, Mod
Newest Members
NeilA, Jayhicks, Tomvanhouten, Dads29Chevy, Tractorman
18,308 Registered Users
Today's Birthdays
aristech, RalphL, tonysk
Forum Statistics
Forums58
Topics59,070
Posts429,051
Members18,308
Most Online1,133
Jan 22nd, 2020
 

Notice: Any comments posted herein do not necessarily reflect the official position of the VCCA.

Powered by UBB.threads™ PHP Forum Software 7.7.5