A couple years back I came across a company that was making multiple v-belt pulleys for supercharger setups. I am pretty sure the company was from new York or new jersey but I can't find it now. Does anyone know about these? Or the name of the company? Thanks, Joe.
Being the cheap bastard that I am, I wonder about adapting something like the item in this ad (and available else where) http://cgi.ebay.com/ebaymotors/CRAN...ptZMotorsQ5fCarQ5fTruckQ5fPartsQ5fAccessories For the set up I am piecing together, 1-1 drive seems like a good ratio for 5 pounds boost. Maybe I can get a triple crank pulley, and turn a small adapter to put another similar pulley on the blower drive. Making the pulleys on my small lathe turns out not to be as simple as I thought. I would need a piece of AL 2-3" thick and about 6" x 6" . Such AL pieces aren't super cheap or available and push the limits of my little machine, not to mention my getto-hack skills.
you could stack single pulleys, just machine a lip on one side a recess on the other, and leave room in the middle for some bolts.
http://www.jalopyjournal.com/forum/showthread.php?t=229860&page=2&highlight=blower+belt I think Kerry runs one on his car.
or use thick wall aluminum tube. McMaster-Carr has some 5" od with 1/2" wall thickness. 9056K571 You'd have to make a hub to bolt or weld onto one end. http://www.mcmaster.com
I'm loving the HAMB this morning. Thanks for the great info. I am trying to school myself on belts in general now. I found this interesting chart from Gates. http://www.gates.com/catalogs/file_display.cfm?file=Belt_ID_Chart_bkmrks.pdf&thisPath=gates\catalogs I think my SBF uses "A" belts, and the double pulley that came on my 4-71 drive uses "B" belts (the double pulley is exactly 2" thick) I am seeing a number of solutions to my problems now. I will do more measurements when I get home.