Vanagon EuroVan
Previous messageNext messagePrevious in topicNext in topicPrevious by same authorNext by same authorPrevious page (December 2002, week 3)Back to main VANAGON pageJoin or leave VANAGON (or change settings)ReplyPost a new messageSearchProportional fontNon-proportional font
Date:         Sat, 21 Dec 2002 16:48:32 -0500
Reply-To:     mrvolkswagen@HOTMAIL.COM
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Chris S <mrvolkswagen@HOTMAIL.COM>
Subject:      Re: Engine RPMs
Comments: To: Jeffrey Schwaia <jeff@TSSGI.COM>
Content-Type: text/plain; charset="iso-8859-1"

Jeff sez:

> I posted this question a week ago and didn't receive any responses so I > thought I would try again. Any input is appreciated.

Jeff, here's a previous email I sent to a friend of mine about the subject of engine RPM at highway speeds. I hope you find it helpful:

"I plugged the Vanagon gear ratios into a ratio computer to see what RPM we are supposed to be turning on the highway. The gear ratios can be found

here: http://volksweb.relitech.com/helmut/GEARBOX.HTM and the calculator can

be found here: http://www.xse.com/leres/ss/calculator.html. It appears that

the rear end ratio is either 4.83 or 4.86 so I used 4.83 for the

calculations. The old 185R14 tires have a circumference of 25.7 inches

(tirerack.com figure for Yokohama Y356D tires). According to the figures

with the smaller tires we were turning 3798 RPM at 70 MPH and 4340 RPM at 80

MPH. The LT27x8.5R14 tires have a circumference of 26.5 inches, giving you

an engine speed of 3669 RPM at 70 MPH (130 RPM less) and 4193 RPM at 80 MPH

(147 RPM less). Theoretical top speed goes up to 103 MPH from 99 MPH.

Aren't you glad you can now go 4 MPH faster with the larger tires? Ha ha..."

Chris S.

www.knology.net/~vw/


Back to: Top of message | Previous page | Main VANAGON page

Please note - During the past 17 years of operation, several gigabytes of Vanagon mail messages have been archived. Searching the entire collection will take up to five minutes to complete. Please be patient!


Return to the archives @ gerry.vanagon.com


The vanagon mailing list archives are copyright (c) 1994-2011, and may not be reproduced without the express written permission of the list administrators. Posting messages to this mailing list grants a license to the mailing list administrators to reproduce the message in a compilation, either printed or electronic. All compilations will be not-for-profit, with any excess proceeds going to the Vanagon mailing list.

Any profits from list compilations go exclusively towards the management and operation of the Vanagon mailing list and vanagon mailing list web site.