"Bill Putney" wrote in message news: snipped-for-privacy@kinez.net... | | This is obvious to us older guys who had cars in the days of V-belts. | We all had times when our v-belts were loose or a little slick - they | would be fine with no lights or a.c. on, but you turn the bright lights | and a.c. on with cabin fan running full speed, and the belt would | screech. Turn the lights and/or fan off, and it would quiet down. | Why? Because of the extra load on the alternator/belt/engine. | | With these good serpentine belts and automatic tensioners, the young | pups don't get to learn the laws of physics first hand. |
Yep. Plus the engine carburetors back then didn't have systems that would compensate (by adjusting the throttle) for the added load. Engine RPM would actually go down 100RPM-150RPM (and stay down) when one would switch on the headlights. Add the cabin blower to that and the engine would almost stall out...and if you needed a tune up, it would! A/C?...nope, we didn't have that back then! :-) A friend of my fathers had a old Ford Falcon stationwagon with a 3-speed on the column back in the 1960's that must have had a 30HP engine in it....it couldn't climb a steep hill at a camp site up at Sugarloaf Mountain (Frederick, County, Maryland) we camped at one time unless he killed all the electrical drain. He had to go up the hill blind...lights out at night, with all of us and our gear at the bottom of the hill (we tried reducing weight first...wasn't enough). I've since learned that reverse gear is lower than 1st gear...so we may have made it if we tried going up backwards...live and learn.