Lister Engines > Lister Based Generators

poly-v belt tension

<< < (2/2)

solarguy:
I also run a six rib AC Delco serp belt.  Casting and machining the custom pulley was fun/challenging.  It took a couple tries to get a nice blank cast.  Once dialed in, I've only had to adjust the tension once in 1,500 hours of operation.  The lister is fixed/bolted to the frame, the gen head slides on a captive sled that rides on the I-beams of the gen frame.  I bought a spare but suspect it will die of dry rot before I ever wear the first one out.  I sort of prefer not have an idler/tensioner.  One less thing to fail.

Finest regards,

troy

Tom:
Hey ShipChief,

Is it possible that your mounting frame has too much flex and that is why the belt won't stay tight? Also is the axis of the crankshaft parallel to the generator shaft? I'm having good luck with a generic 93" 6 rib napa belt.

SHIPCHIEF:
Troy;
I had .063" crankshaft end clearance, so the belt tried to follow the crank as it battered back and forth. Also I think the mount holes in the frame had the engine setting a little crooked. I don't think the heavy wall I beam and Square tube frame is too flexible, it's pretty massive. The sub frame is too flimsy, and I've got more steel to truss it up. All in all, I plan to work on each aspect you mentioned, aslo a shorter belt with the gen head closer to the engine, I have a 102" 8 rib belt.
Scott E

solarguy:
Good luck Scott/Shipchief,

Sounds like you have an excellent plan of attack.


But I think it was TOM who made the helpful suggestions, and not I.  Don't want to pinch credit that's not mine.

Finest regards,

troy

SHIPCHIEF:
OH! Thanks TOM
Scott E

Navigation

[0] Message Index

[*] Previous page