Tractor Posted July 8, 2007 Report Share Posted July 8, 2007 I've been doing some upgrading on my offroad trucks charging system. I replaced my stock GM 70 alt with one of the 140amp newer style GM alternators. I need to run a 2nd belt from the main alternator down to a 2nd alternator that I modded to run as a 110volt generator/welder. I don't really want to go to all the trouble to design and build a belt tensioner and all that and the weldernator doesn't need to spin unless I'm using it so I'd have a quick and simple method of putting a belt on it. I'm thinking if I could get a supply of heavy duty rubberbands I could just pop one on when needed. Other thoughts are a chain with a quick disconnect for one of the gears for removal. The main alternator is powered by a v-belt running from the crank pulley, around the water pump and alternator. A bigger belt wouldn't allow for enough tension on the big alternator or I'd just do that and leave it like I had it. I'm probably going to run the 2nd alt off a double pulley on the main alt (to make what I"m planning more clear.) Any ideas or places I could get something neat like that? I think I've even seen some type of emergency belts for cars at some point. Evan Quote Link to comment Share on other sites More sharing options...
Dave1647545494 Posted July 8, 2007 Report Share Posted July 8, 2007 I prolly have a gm double pulley you could have if I can find it mount the second alt on a slotted arm just like a normal one and just put a belt on it and tighten it up when you need it Quote Link to comment Share on other sites More sharing options...
Tractor Posted July 8, 2007 Author Report Share Posted July 8, 2007 I'd do the arm thing, but its not really an option. Besides the last thing I want to do on a trail ride is mess around in the engine bay any more than I have to. Its always covered in mud and dangerously slippery. I wonder if I could change everything over to the serpentine belt design in some ghetto way? I've seen kits, but this truck ain't something I spend money on. Its more fun to rig stuff up to work cheaply and poke fun at the guys who spend money and still have there shit break. Evan Quote Link to comment Share on other sites More sharing options...
Dave1647545494 Posted July 8, 2007 Report Share Posted July 8, 2007 take the front drive off of a late model 4.3 or 305/350 in the junkyard Quote Link to comment Share on other sites More sharing options...
Tractor Posted July 9, 2007 Author Report Share Posted July 9, 2007 Ah cool. Do you know if that will work on the older externally balanced 350's? Evan Quote Link to comment Share on other sites More sharing options...
Clifford Automotive Posted July 9, 2007 Report Share Posted July 9, 2007 yes it will Quote Link to comment Share on other sites More sharing options...
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