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Re: Freewheel
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Posted by spiv (more from spiv) on Sun, 19 Aug 2001 13:56:53 Share Post by Email
In Reply to: Re: Freewheel, kansas, Sat, 18 Aug 2001 21:48:36
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Re the 'official' SAAB version of the benefits of freewheel: Some patient soul has scanned the entire owner's manual for the 1960 SAAB 96 and placed it on the Web at <http://www.geocities.com/vintagesaab/Manual/1960Saab96/>
About freewheel, it says:

"Generally the free wheel should be engaged, thus enabling the car to coast with idling engine, when the accelerator is released. This gives more miles per gallon of fuel and reduces engine wear. Gear-shifting is also carried out more smoothly and the driving becomes more comfortable. Take advantage of the free wheel, not only downhill, but also on level roads. the only occasions when the free wheel should be locked are when the motion of the car is required for starting the engine, and when descending long, steep grades in order to use the engine for braking the car."

While I'm sure the main motivation for fitting the freewheel was preventing oil starvation, as Andy has posted, these other advantages seem significant enough that I can see why SAAB continued to offer it after they switched over to four-stroke power. As to why they eventually dropped it, I wonder if the higher power and torque of the later engines had anything to do with it? The later-type freewheel mechanism sometimes failed even under the load of a V4, or so I've heard...

posted by 24.3.2...
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