1 Wire Alternator

The Cub Club -- Questions and answers to all of your Cub related issues.

Moderator: Team Cub

Forum rules
Notice: For sale and wanted posts are not allowed in this forum. Please use our free classifieds or one of our site sponsors for your tractor and parts needs.
ajhbike
501 Club
501 Club
Posts: 1144
Joined: Thu Mar 09, 2017 4:06 pm
Zip Code: 06405
Tractors Owned: 1957 Cub
1950 Cub
1951 Super C
1966 IH 504 Hi-Clear
1968 JD 3020
1949 Ferguson TO-20
1955 Ferguson TO-35
Location: Branford, CT

1 Wire Alternator

Postby ajhbike » Tue Jun 13, 2017 2:52 pm

I took the plunge to a 12V alternator from DB Electrical on my 56 Loboy since it didn't run with a battery and started by jumping with a 12V. Now searching for a simple 1 wire diagram for the system...plenty of 2 wire diagrams but couldn't find one for 1 wire. I have a 6V coil...no magneto (bought the resistor). Anyone have a diagram?

ScottyD'sdad
Cub Pro
Cub Pro
Posts: 6978
Joined: Thu Aug 31, 2006 7:00 pm
Zip Code: 02769
Tractors Owned: 6"F" cubs
5 lo-boys
1 154
1 184
1 IH444
1 Oliver OC3 crawler
1 AC D10
1 IH 100 manure spreader
1 IH model B corn grinder
3 power units
cub demonstrator
Circle of Safety: Y
Location: Ma. Rehoboth

Re: 1 Wire Alternator

Postby ScottyD'sdad » Tue Jun 13, 2017 5:56 pm

There'a a diagram, several pages back,on the forum. I'm not computerish enough to link you to it.
Ed
Image
Member of Chapter 18, and National
Circle of Safety

BenM
Cub Star
Cub Star
Posts: 91
Joined: Thu Apr 13, 2017 12:29 am
Zip Code: 30107
Tractors Owned: 63 Cub
Circle of Safety: Y
Location: Ball Ground, GA

Re: 1 Wire Alternator

Postby BenM » Wed Jun 14, 2017 12:57 am

Here's one I modified. I have to put my alternator in this week... hopefully. Been rough lately. Hope this helps.
Image

ajhbike
501 Club
501 Club
Posts: 1144
Joined: Thu Mar 09, 2017 4:06 pm
Zip Code: 06405
Tractors Owned: 1957 Cub
1950 Cub
1951 Super C
1966 IH 504 Hi-Clear
1968 JD 3020
1949 Ferguson TO-20
1955 Ferguson TO-35
Location: Branford, CT

Re: 1 Wire Alternator

Postby ajhbike » Wed Jun 14, 2017 5:56 am

thank you. So you are wiring to the light switch from the ammeter rather than powering from the run side of the ignition switch?

User avatar
Shane N.
501 Club
501 Club
Posts: 4613
Joined: Wed Nov 22, 2017 6:24 am
Zip Code: 00000
Tractors Owned: .
1970 International 140 (Norman)
1972 International 140 (Keeferdoodle)
1949 John Deere A
1993 Ford 4630 W/Loader
1965 John Deere 110
1961 Cub Cadet Original

Sold Cubs..
1947 Cub #1447 (Arnold)
1949 Cub (Walt)
1950 Cub (piece of junk)
1952 Cub
1975 IH Cub
1974 IH Lo-Boy
Circle of Safety: Y
Location: N.C.

Re: 1 Wire Alternator

Postby Shane N. » Wed Jun 14, 2017 7:20 am

That wiring diagram will work great for your conversion, put your 6V resistor you got in the wire going from "run" to the + side of the coil and your all set. And yes, won't hurt a thing to power your light switch the way this diagram is.
Every home is a school, what are you teaching?

Circle of Safety

ajhbike
501 Club
501 Club
Posts: 1144
Joined: Thu Mar 09, 2017 4:06 pm
Zip Code: 06405
Tractors Owned: 1957 Cub
1950 Cub
1951 Super C
1966 IH 504 Hi-Clear
1968 JD 3020
1949 Ferguson TO-20
1955 Ferguson TO-35
Location: Branford, CT

Re: 1 Wire Alternator

Postby ajhbike » Wed Jun 14, 2017 7:27 am

Awesome, will try to install everything this weekend. Thanks

ajhbike
501 Club
501 Club
Posts: 1144
Joined: Thu Mar 09, 2017 4:06 pm
Zip Code: 06405
Tractors Owned: 1957 Cub
1950 Cub
1951 Super C
1966 IH 504 Hi-Clear
1968 JD 3020
1949 Ferguson TO-20
1955 Ferguson TO-35
Location: Branford, CT

Re: 1 Wire Alternator

Postby ajhbike » Wed Jun 14, 2017 3:21 pm

It looks like the diagram is missing a wire from the starter to the ignition.....the battery cable and the ammeter wire are there. My other 6V cub has 3 wires on the starter post.

Eugene
Team Cub Mentor
Team Cub Mentor
Posts: 18621
Joined: Fri Jul 02, 2004 9:52 pm
Zip Code: 65051
Circle of Safety: Y
Location: Mo. Linn

Re: 1 Wire Alternator

Postby Eugene » Wed Jun 14, 2017 3:38 pm

ajhbike wrote:It looks like the diagram is missing a wire from the starter to the ignition.
Nope. The wiring diagram is good.

The amp gauge is hot (electrically) all the time, thus feeding the ignition system.

The ignition switch connects/disconnects the ignition system. The single wire alternator only charges when the engine is running. There is a very slight amp draw to the alternator when the engine is not running.
I have an excuse. CRS.

ajhbike
501 Club
501 Club
Posts: 1144
Joined: Thu Mar 09, 2017 4:06 pm
Zip Code: 06405
Tractors Owned: 1957 Cub
1950 Cub
1951 Super C
1966 IH 504 Hi-Clear
1968 JD 3020
1949 Ferguson TO-20
1955 Ferguson TO-35
Location: Branford, CT

Re: 1 Wire Alternator

Postby ajhbike » Wed Jun 14, 2017 7:42 pm

Okay then, thanks for answering my questions

BenM
Cub Star
Cub Star
Posts: 91
Joined: Thu Apr 13, 2017 12:29 am
Zip Code: 30107
Tractors Owned: 63 Cub
Circle of Safety: Y
Location: Ball Ground, GA

Re: 1 Wire Alternator

Postby BenM » Fri Jun 16, 2017 3:11 pm

Just wired mine up today although I don't have any lights. I only had dangling wires where the lights used to be. I removed all that and ran according to the diagram and-
It still wouldn't start. Looks like I am rebuilding the starter next. I tested everything with the multimeter and everything is getting 12 volts all the way down to the starter. Oh well. At least I got the new alternator in.

Hope it goes smooth for you.

Eugene
Team Cub Mentor
Team Cub Mentor
Posts: 18621
Joined: Fri Jul 02, 2004 9:52 pm
Zip Code: 65051
Circle of Safety: Y
Location: Mo. Linn

Re: 1 Wire Alternator

Postby Eugene » Fri Jun 16, 2017 3:15 pm

Load test the battery or have it tested at the auto parts store before you repair the starter.

Also check and clean corrosion on battery terminals and battery cable ends.
I have an excuse. CRS.

ajhbike
501 Club
501 Club
Posts: 1144
Joined: Thu Mar 09, 2017 4:06 pm
Zip Code: 06405
Tractors Owned: 1957 Cub
1950 Cub
1951 Super C
1966 IH 504 Hi-Clear
1968 JD 3020
1949 Ferguson TO-20
1955 Ferguson TO-35
Location: Branford, CT

Re: 1 Wire Alternator

Postby ajhbike » Fri Jun 16, 2017 7:23 pm

actually it is a brand new 12V that tested good. Here's a question...I have the resister that chipmaker suggested for my 6V coil...Is it flat out better to buy a 12V or is the resister/6V combo equally as good? I had read somewhere that they we less than $20 and if so and it is "better" than I may as well do it. Thoughts?

User avatar
Shane N.
501 Club
501 Club
Posts: 4613
Joined: Wed Nov 22, 2017 6:24 am
Zip Code: 00000
Tractors Owned: .
1970 International 140 (Norman)
1972 International 140 (Keeferdoodle)
1949 John Deere A
1993 Ford 4630 W/Loader
1965 John Deere 110
1961 Cub Cadet Original

Sold Cubs..
1947 Cub #1447 (Arnold)
1949 Cub (Walt)
1950 Cub (piece of junk)
1952 Cub
1975 IH Cub
1974 IH Lo-Boy
Circle of Safety: Y
Location: N.C.

Re: 1 Wire Alternator

Postby Shane N. » Fri Jun 16, 2017 7:40 pm

The points in the distributor will burn up quicker with 12V going to them.
Every home is a school, what are you teaching?

Circle of Safety

ajhbike
501 Club
501 Club
Posts: 1144
Joined: Thu Mar 09, 2017 4:06 pm
Zip Code: 06405
Tractors Owned: 1957 Cub
1950 Cub
1951 Super C
1966 IH 504 Hi-Clear
1968 JD 3020
1949 Ferguson TO-20
1955 Ferguson TO-35
Location: Branford, CT

Re: 1 Wire Alternator

Postby ajhbike » Fri Jun 16, 2017 8:13 pm

forgot about that, thanks. That's why I like this place...I can trial balloon all my misguided thoughts

tst
10+ Years
10+ Years
Posts: 3818
Joined: Tue Jan 12, 2010 2:08 pm
Zip Code: 12514
Circle of Safety: Y

Re: 1 Wire Alternator

Postby tst » Fri Jun 16, 2017 8:41 pm

if you buy a 12 volt coil buy one with an internal resistor, your points will not burn up quicker, yes its less than $20 , you do not need an external resistor, less connections and parts to go bad


  • Similar Topics
    Replies
    Views
    Last post

Return to “Farmall Cub”

Who is online

Users browsing this forum: Steve Butram, xbartx and 6 guests