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HudCo 
Orange Level
Joined: 29 Jan 2013
Location: Plymouth Utah
Points: 3864
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 Topic: alternator size
Posted: 14 Apr 2021 at 11:29pm |
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what one is physically smaller delco cs121 or the denso
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steve(ill)
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Joined: 11 Sep 2009
Location: illinois
Points: 87090
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Posted: 15 Apr 2021 at 8:33am |
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Like them all, but love the "B"s.
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steve(ill)
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Joined: 11 Sep 2009
Location: illinois
Points: 87090
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Posted: 15 Apr 2021 at 8:36am |
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Like them all, but love the "B"s.
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albatros_3
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Joined: 16 Apr 2012
Location: SE Michigan
Points: 450
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Posted: 15 Apr 2021 at 9:39am |
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I've been using Hitachi 14231 alternators on 12 volt conversions for Farmall Cubs and As. I actually have two Super As in the barn due up for the conversion. And two alternators just showed up from RockAuto yesterday. The remaining parts should be here today or tomorrow.
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Ed (Ont)
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Joined: 08 Nov 2009
Location: New Lowell, Ont
Points: 1476
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Posted: 15 Apr 2021 at 9:57am |
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Thanks. Good info. I wonder if we could get this in the knowledge section as a reference. 😀
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GregLawlerMinn
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Joined: 11 Sep 2009
Location: Lawler, Mn
Points: 1226
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Posted: 15 Apr 2021 at 10:00am |
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i installed a Denso on my D15. It did not spin up fast enough to charge so had to add a 2nd wire and resistor to it. Been working great since then and tucks away in the motor and under the sheet metal.
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HudCo
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Joined: 29 Jan 2013
Location: Plymouth Utah
Points: 3864
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Posted: 15 Apr 2021 at 11:08am |
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no one wire stuff ever gets installed here. looks like the denso is alittle smaller , thanks for the info guys
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HudCo
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Joined: 29 Jan 2013
Location: Plymouth Utah
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Posted: 15 Apr 2021 at 11:13am |
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what cars used the denso in case i go wrecking yard shopping for treasures
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steve(ill)
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Joined: 11 Sep 2009
Location: illinois
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Posted: 15 Apr 2021 at 12:44pm |
I would say the "FACTORY" alternators are not 1 wire... The "aftermarket" 1 wire alternators are popular with hot rodders...
Who makes alternators for Toyota? Overall, the Denso SC Alternator is 20% lighter and 50% more powerful than a conventional alternator. Why Should I Trust Denso? Denso manufactures the original equipment starters and alternators for makes including Toyota, Mitsubishi, Honda, Ford, BMW, Mercedes, Volvo, GM, Kia, Chrysler, and Hyundai.Jan 23, 2019 |
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Like them all, but love the "B"s.
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steve(ill)
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Joined: 11 Sep 2009
Location: illinois
Points: 87090
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Posted: 15 Apr 2021 at 12:59pm |
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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
Points: 11978
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Posted: 15 Apr 2021 at 2:04pm |
In order to run the wide 5/8" belt, you'll need to purchase a pulley for the small mainshaft the Denso has. We have the pulleys in stock along with the Alternators if interested. Matter of fact I offer the Denso with our pulley on it as a package... Steve@B&B
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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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jaybmiller
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Joined: 12 Sep 2009
Location: Greensville,Ont
Points: 24571
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Posted: 15 Apr 2021 at 6:29pm |
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hmm 1st alt is 35Amp, 2nd is 40Amp but $40 cheaper....hmmmmm
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3 D-14s,A-C forklift, B-112
Kubota BX23S lil' TOOT( The Other Orange Tractor)
Never burn your bridges, unless you can walk on water
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Ed (Ont)
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Joined: 08 Nov 2009
Location: New Lowell, Ont
Points: 1476
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Posted: 16 Apr 2021 at 8:16am |
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What are the pros and cons of 1 wire alternators on an old tractor? If you are going to update it would be the easiest way to do so. I have one on my old Camaro and like it. Eliminated lots of wires and voltage regulator. Charges at idle but idle speed on that engine is 850 rpm.
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jaybmiller
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Joined: 12 Sep 2009
Location: Greensville,Ont
Points: 24571
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Posted: 16 Apr 2021 at 11:25am |
cons... not original to the vehicle requires rewiring of vehicle may need different pulley, to get 'charging' speed
pros more amps for lights and things. recharges battery faster,better for 'short' trips...
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3 D-14s,A-C forklift, B-112
Kubota BX23S lil' TOOT( The Other Orange Tractor)
Never burn your bridges, unless you can walk on water
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Ed (Ont)
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Joined: 08 Nov 2009
Location: New Lowell, Ont
Points: 1476
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Posted: 16 Apr 2021 at 2:20pm |
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Thx Jay. So all that I know. Any alt on WD45 or CA is not original. My question is will a 1 wire work okay or are the 3 wire ones better and why. I may do some tests on Camaro and see what rpm the charge slows down or stops. Steve in NJ probably already knows. 😀
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jaybmiller
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Joined: 12 Sep 2009
Location: Greensville,Ont
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Posted: 16 Apr 2021 at 2:30pm |
1 wire 'senses' battery level AT alternator NOT at the battery whereas a 3 wire unit actually does 'sense' the battery level at the battery. Also a 3 wire unit allows for an 'idiot' light. It comes on before starting, then off while running. Break the fan belt it'll come on.... Some say a 1 wire alt needs a small pulley, to spin faster to tell it to charge. I use the CS130 series 3 wire alts for old GM cars(cavaliers) as I have 5-6 of them,free, on the shelf. Use the genny pulley, they work fine.
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3 D-14s,A-C forklift, B-112
Kubota BX23S lil' TOOT( The Other Orange Tractor)
Never burn your bridges, unless you can walk on water
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todmac
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Joined: 21 Dec 2020
Location: MN
Points: 4
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Posted: 17 May 2021 at 12:16pm |
Hello,
I am new parent to a WD, ..... not sure of year yet, I think a '51. While initially running the tractor to load and bring home, the pully on the alternator blew apart. Looking to hopefully just buy a pulley from my local napa store, I ended up just getting a whole new unit. Come to find out the belt is approx 0.60" wide, the pulley is much too small. Not sure if I should run a narrower belt. Came across your posting and am interested in sizing up my pulley. Not sure the brand of the alternator yet, I'll run out and look. Is there any other information you would need? or maybe direction you could point me in? Any info would be much appreciated. Thanks for reading.
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todmac
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Joined: 21 Dec 2020
Location: MN
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Posted: 17 May 2021 at 1:46pm |
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I think I got the reply wrong and went to the forum instead of Steve in NJ
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PaulB
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Joined: 12 Sep 2009
Location: Rocky Ridge Md
Points: 5044
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Posted: 17 May 2021 at 8:43pm |
For those replacing the generators with alternators, an alternator will drain the battery to nothing when not run for long periods. So for stored tractor, you'd need to remember to dis-connect the battery for long term storage. Unlike a generator system that has a cutout in the voltage regulator that does this automatically. When I was using my tractors on a regular basis, I was doing the alternator thing. Now that most of the sit more than they're used, I've been putting generators back on like they should have.
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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 in NJ
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Joined: 12 Sep 2009
Location: Andover, NJ
Points: 11978
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Posted: 19 May 2021 at 7:10am |
If you visit our website, and go down the header all the way to the right, you'll see "more". A drop down window will appear and look for "More Techical info". There is plenty to read on 12V conversions, the different Alternators, and one wire vs 3 wire information. Leave the one wire Alternators to Automobiles. A three wire system works fine on all Tractors. I use the three wire system on my hotrods also. You get a much better operating charging system hooking up two more wires. It isn't that tough....
If you connect a one wire Alternator directly to the Battery, an Alternator will drain the Battery in time. If you set up the system for a 3 wire through the key switch like my systems are designed, you won't have a drain problem. Whenever a Tractor sits for a long period of time, its always good to add a Battery Tender to keep the Battery active and keep the longevity of the Battery. This way when the time comes to use the Tractor, the engine fires right up and everything is up to snuff like it was used the day before. A nice addition also would be to install a Battery switch for those Tractors that sit a long time till called upon for certain work chores... Steve@B&B
Edited by Steve in NJ - 19 May 2021 at 7:14am
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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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