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rustyorange45 
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Joined: 01 Sep 2013
Location: Vernon Co. MO.
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 Topic: Alternator for a CA
Posted: 10 Aug 2021 at 11:19am |
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Any suggestions for an alternator for my CA. Best fit, output, etc. Thanks, Tim
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1953 WD45 WF/Model 90 Loader, Oxnard Rear Blade, 80R Mower, Model 209 Disc, WD Rear Mounted Scoop, Model 184 & 160 Rotary Mowers, 1952 CA NF/L306CA mower, 1953 CA WF/Model 8 Loader.
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steve(ill)
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Joined: 11 Sep 2009
Location: illinois
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Posted: 10 Aug 2021 at 11:25am |
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Old style is Delco 10SI... Newer Delco ( General Motors) is the CS130. You only need about 15- 20 amps.. The 130 is capable of 100 amps if you add lights/ radio. The CS130 is also smaller than the old 10 SI..... Now they have come up with "MINI" alternators that are an inch smaller than the CS130.. That would be a nice upgrade. Some overseas alternators now as replacements / mini .... About any of them work OK.. If you need wiring / advice and a walk thru, you might talk to Steve at B&B.
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Like them all, but love the "B"s.
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steve(ill)
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Posted: 10 Aug 2021 at 11:26am |
https://www.allischalmers.com/forum/alternator-size_topic179856_post1524745.html?KW=alternator#1524745
see the "chevy mini" picture and discussion about half way down the post..
Edited by steve(ill) - 10 Aug 2021 at 11:35am
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Like them all, but love the "B"s.
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Goose
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Joined: 07 Oct 2009
Location: Melrose, Wis
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Posted: 10 Aug 2021 at 12:42pm |
Does the "chevy mini" alternator have a built-in voltage regulator, or must one be installed in-line?
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"People are human beings, produced by the society in which they live. You encourage people by seeing the good in them." ~ Nelson Mandela
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PaulB
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Location: Rocky Ridge Md
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Posted: 10 Aug 2021 at 1:37pm |
The standard Delco will fit, although it is a tight fit. Here how it mounts with the bracket that I make. This also uses the standard belt. For use with the wide belt I get a wide pulley from WWW.Brillman.com. They also have a wiring harness on the shelf for a 1 one alternator on a CA. The smaller Delcos give a bit more wiggle room. |
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If it was fun to pull in LOW gear, I could have a John Deere.
Real pullers don't have speed limits.
If you can't make it GO... make it SHINY
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steve(ill)
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Location: illinois
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Posted: 10 Aug 2021 at 2:10pm |
Goose... yes the mini has an internal voltage regulator... I think the auto industry stopped using EXTERNAL by 1990.. Anything built in the last 30 years should be INTERNAL. Depending on what you get, you may need a RESISTOR in the EXCITATION line to get the alter to start charging...I would use the "3 wire", not the single wire type.
something like this.. resistor will vary depending on which alternator you choose.
Edited by steve(ill) - 10 Aug 2021 at 2:13pm
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Like them all, but love the "B"s.
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Steve in NJ
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Joined: 12 Sep 2009
Location: Andover, NJ
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Posted: 10 Aug 2021 at 7:19pm |
In the C & CA 12V conversion kits that I build, I use the Denso mini Alternator for drag link clearance. Why use an Alternator you need to stuff in there, and hope it doesn't interfere when the Denso fits in with plenty of room. Our Alternator bracket works fine with the Denso to. A second choice would be the "CS" series Delco Alts as Steve mentioned. The chassis on that unit is a bit smaller than its "SI" cousin. Check out our website. Our mini Alt is 35 amp and is a three wire unit with diode instead of a one wire. Three wire units work much better on Tractors. The Denso unit works sweet! Your call there..... Steve@B&B bb-customcircuits.com
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39'RC, 43'WC, 48'B, 49'G, 50'WF, 65 Big 10, 67'B-110, 75'716H, 2-620's, & a Motorhead wife
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John426
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Location: France
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Posted: 27 Aug 2021 at 9:42am |
hi,
what pulley diameter did you use to have the correct rotational speed of the alternator at low engine speed?
What must be the minimum number of Rpm for the alternator to charge at idle |
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steve(ill)
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Posted: 27 Aug 2021 at 6:29pm |
If you use a 3 wire alternator, it SHOULD start charging at an idle... you can bump it up to 1000 rpm if needed, then back down to your idle speed.. I have never had to do that using the standard pulley...
If you put the SINGLE WIRE alternator on, it does need more RPM to kick in.. REV it up or use a smaller pulley.....good reason to go with the 3 wire.
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Like them all, but love the "B"s.
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Les Kerf
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Location: Idaho
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Posted: 28 Aug 2021 at 8:30am |
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I have used several One-wire alternators on my tractors over the years; my first Model C had to be revved WAY up to get it to start charging but after that it would charge at any reasonable idle speed.
The one I have on my present Model C starts charging even at idle and performs quite satisfactorily.
The only issue with it is there is inadequate adjustment room for tightening the belt; I have to do that by adjusting the width of the water pump pulley which is very unhandy.
I strongly recommend using one of the mini-type units for that reason.
Any one of the modern alternators have more than enough charging capacity for normal tractor usage.
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John426
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Posted: 29 Aug 2021 at 5:04am |
Hi Is it this pulley size diameter of 2.60" O.D, that you have on your alternator Delco 10SI? Or on the other alternator?
Edited by John426 - 29 Aug 2021 at 1:15pm
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Steve in NJ
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Posted: 31 Aug 2021 at 7:17am |
If you wire your Tractor as a three wire system, after 400-450 rpm, the unit will start charging. No need to rev the snot out of the engine to get it to charge. Pulley diameter doesn't matter with a three wire system. The pulley pic you posted looks like a 3/8" belt. You need a 5/8" belt to match the other pulleys on the engine. Most 1 wire Alternators can be changed over to a 3 wire system with the VR's that are in them. HTH Steve@B&B
Edited by Steve in NJ - 31 Aug 2021 at 7:18am
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39'RC, 43'WC, 48'B, 49'G, 50'WF, 65 Big 10, 67'B-110, 75'716H, 2-620's, & a Motorhead wife
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John426
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Posted: 31 Aug 2021 at 2:19pm |
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What is the difference between alternator 1 wire and 3 wire?
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steve(ill)
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Posted: 31 Aug 2021 at 3:23pm |
A three wire alternator is the STANDARD used on cars and trucks.. One big wire, like a #8 that supply amps to the battery. One small wire like #18 to feed power into the alternator.. one small wire like a #18 the puts a lower voltage signal to the alternator to KICK IT IN and start charging. Normally this is done with a resistor, light bulb, or diode in that line, and turned on and off with the key or toggle switch.
A one wire alternator is more recent and used for hot rods or race cars.. It has one BIG wire to the battery to charge.. The wire also feeds the alternator internal with power to " turn it on"... try to do everything with one wire.. Very simple, but sometimes not as reliable.. Sometimes have to go to HI IDLE to get the alternator to kick in.. Not a problem with a hot rod... might be with a tractor.
Look about 8 posts up and you will see a 10SI 3 wire alternator. BIG wire to charge, small #1 and #2 wire for power and signal... They take those two wires off and "try" to take care of that circuit internal.
Edited by steve(ill) - 31 Aug 2021 at 3:27pm
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Like them all, but love the "B"s.
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steve(ill) wrote:
