12 volt conversion

[obradovich08]

what is a good alternator to use for a 12volt conversion on an LA?

 

[old]

I always use the Delco 10si like what you would find under the hood os say a 1980 Chev pick up no AC no power any thing. Cost is around $45

 

[obradovich08]

ive heard that but wasnt sure what would be best because of the v pulley. i wasnt sure how wide the grooves were and if itd be alright

 

[Bob]

Often, you can take the pulley off of the old generator and swap it over to the alternator.

 

[Brent Zappe]

what I have used on a 12 volt conversoin has always been easy to do. I start off with the Delco/Remy 10-SI because it has a built in Voltage regulator and it only needs three wire hook ups. 1. Battery, 2.#1 termianl conducts battery current to the rotor windings for the excitation circuit and to the amp meter.2.terminal receives battery voltage so that the voltage regulator can reat to the system operating conditions. Remember that the #2 that feed the Alt. with voltage must have a shut off so it does not drain the battery when it is not runing. If you have a Dist. and coil you might have to run a ballist resister that is if you are burning the wire up from you ignition to the coil. I hope this might have help you out. good luck Brent.

 

[obradovich08]

ok i'll see what i can do. thank you

 

[JMOR]

(quoted from post at 10:05:47 01/18/14)
what I have used on a 12 volt conversoin has always been easy to do. I start off with the Delco/Remy 10-SI because it has a built in Voltage regulator and it only needs three wire hook ups. 1. Battery, 2.#1 termianl conducts battery current to the rotor windings for the excitation circuit and to the amp meter.2.terminal receives battery voltage so that the voltage regulator can reat to the system operating conditions. Remember that the #2 that feed the Alt. with voltage must have a shut off so it does not drain the battery when it is not runing. If you have a Dist. and coil you might have to run a ballist resister that is if you are burning the wire up from you ignition to the coil. I hope this might have help you out. good luck Brent.

rent, I think there may be some "mixing" as to the #1 & #2 functions, etc. Since you appear to have accomplished same, then maybe finger/keyboard problem. he he he

 

[Steve@Advance]

There are Delco alternators that only require one wire, the "Bat" wire goes directly to the ampmeter or battery. The rest of the wiring is already done internally. You can even get them in 6 volt if you want to keep your system original.

You will need to modify your mounting bracket regardless of which alternator you use.

There are many configurations of pulleys. If you change the pulley, watch the spacer behind the pulley. Be sure the new pulley has the right spacer, it can bind or even break the case when you tighten the nut. Find the pulley you will use before fabing the mount bracket so you can get the alignment right.

 

[old]

Problem with the 1 wire set up is common to have a battery drain and also needs high RPM to kick them in which is hard on a cold engine. Plus the cost of a 1 wire is 2 or 3 times that of a 3 wire and I have yet to ever find a 1 wire with more then a year warranty but I can buy 3 wire ones all day long that have a life time warranty

 

[nebken]

Are we talking about a Case LA or JOHN Deere LA?

 

[Steve@Advance]

Old, I've never checked the drain on a 1 wire. Is it more than a 3 wire internal? I know the 3 wire do show a minuscule drain with a volt meter. The old externals don't show any drain.

Never thought about the rev problem, learn something every day on here!

 

[old]

If wired correctly a 3 wire will have zero drain since the excite circuit is switched off when the ignition is off

 

[obradovich08]

sorry its for a deere la

 

[Brent Zappe]

To wire up the 12 volt 10-SI Delco Remy you must have three wires. The one that say's BAT. goes to Battery terminal connects altenator output to the insulated terminal of the battery. The No.1 terminal conducts battery current to the rotor windings for excitation circuit and is connected to the indicator lamp or the volt gauge if you have one. the number 2 teminal RECEIVS battery voltage, so that the voltage regulator can react to the system operating conditions ( i usally hookthis one to the starter area I think. I am sorry I thought I wrote it out right but I might had missed it up. Brent