Originally Posted by J-Mech (Post 234524)

Honestly, I have the exact same cab, and wanted to do the exact same thing as macman. I wasn't going to post anything about it till I had it figured out and installed. So, I had already been working on the best solution. My plan was the small alternator I listed, but hadn't settled on an exact one because I hadn't found the amp ratings yet. Just like any other alternator, I'm sure there are different amp rated ones.

Make a pulley like this:
(Please disregard the the other things in the pic, it's for another idea.)
Attachment 45718


Then mount the alternator off to one side, or below. I was looking to add about 30 amps. Just need to find an alt to do it. I run 6 30w lights, the win wiper, PTO and wanted to add a heater for a total estimated amp draw, (everything running) of 43amps. Adding a second alt to the system of 30 amp gives a total of 45 available. Plenty. Second alternators don't cause problems. Actually there are several trucks and vans that have 2. Wiring on the machine doesn't have to change, and the additional HP needed for this alt will be under 1 hp, so that really isn't a concern.

Roland mentioned a 30Amp stator for the Kohler. I can't seem to find one, but I did find a 25amp. Still not enough on it's own, but I might install it so I have an available 55 amps with the 2 alternators. It only draws amps when needed. That's the job of the V.R.

Originally Posted by Calvins66Cub (Post 234558)

Not sure if this relates to the Kohler alternator you are referring to, but I was told that alternators have a duty cycle (ex. 20%). Meaning full load amps for 2 minutes, rest (minimal load) for 8 minutes. Similar to a welder. I would not recommend pulling 43 amps from 45 available amps 100%. 1.5 times needed amperage at least. just my :TwoCents:

Originally Posted by J-Mech (Post 234587)

While the duty cycle claim may in fact be true, alternators don't carry a rating. It would be almost impossible to figure out, without torture testing one, what the rating is. It isn't listed in specs, and I doubt you could get a manufacturer to give an honest answer. I've never had a problem with running an alt at max before.... never had one overheat, not a good alternator anyway. Old wore out one sure. I've been running 6 lights on my 1811 for about 10 years now, and the alt is still fine. I'm not scared at all to run two alt's, or to run them that close to max. An alternator is not a welder. A welder uses a big transformer to step up power, and they overheat. I really wouldn't worry about it. If I can get up to 60 amps, that would be great. But, dunno if I can. If the duty cycle was a big deal, it would be listed in the specs for the alternator.

Originally Posted by Calvins66Cub (Post 234594)

I was just using the welder as an example of duty cycle. Just another thought. Could one alternator back feed the other and fry the v/r? Do you need isolation diodes for dual charging circuits?

Originally Posted by prairiequad (Post 234652)

hello; I have the same tractor, did you ever have issues with the lift mechanisim as I'm having some with mine. are these hydraulic or electric.my lift is only about 2"travel and now my blade doesn't go all the way down

Originally Posted by J-Mech (Post 234587)

While the duty cycle claim may in fact be true, alternators don't carry a rating. It would be almost impossible to figure out, without torture testing one, what the rating is. It isn't listed in specs, and I doubt you could get a manufacturer to give an honest answer. I've never had a problem with running an alt at max before.... never had one overheat, not a good alternator anyway. Old wore out one sure. I've been running 6 lights on my 1811 for about 10 years now, and the alt is still fine. I'm not scared at all to run two alt's, or to run them that close to max. An alternator is not a welder. A welder uses a big transformer to step up power, and they overheat. I really wouldn't worry about it. If I can get up to 60 amps, that would be great. But, dunno if I can. If the duty cycle was a big deal, it would be listed in the specs for the alternator.