

| Subject: | Re: Rolling Friction of a Vanagon (not a tire thread)! |
| From: | John Rodgers |
| Date: | Mon, 1 Jun 2009 04:30:04 -0500 |
Robert, Sometimes ya just gotta play! John Robert Fisher wrote: > I think this is John's inner child posting, not his inner aircraft mechanic. > :) > > Cya, > Robert > > -----Original Message----- > From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of > mark drillock > Sent: Sunday, May 31, 2009 9:12 PM > To: vanagon@GERRY.VANAGON.COM > Subject: Re: Rolling Friction of a Vanagon (not a tire thread)! > > Are you planning to factor in added clutch and tranny wear or just only > look at fuel economy while ignoring other costs from various behaviors? > > Mark > > > > John Rodgers wrote: > >> I have a favorite spot along a certain road, and I like to see just how >> much push momentum will give my 88 GL from a certain hill and at a >> certain speed in certain configurations when I crest that hill. I >> disengage the engine and just let the ol' 88 GL roll to see how far it >> will go. >> >> My question is: Which scenario below will offer the least resistance or >> friction to oppose momentum. >> >> Given: >> >> Scenario #1: At speed, the clutch is depressed, the transmission is >> placed in neutral, then the clutch pedal is released and remains there >> until roll out is complete >> >> Or; >> >> Scenario #2: At speed, the engine is disengaged from the tranny by >> simply pushing in the clutch and holding it there until my roll-out is >> completed. >> >> Anyone ever looked at this difference? >> >> Thanks, >> >> Regards, >> >> John Rodgers >> 88 GL Driver >> >> > > >
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