Re: [DML] Re: Speedo gear rpm
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [DML] Re: Speedo gear rpm



Huh?

Your calculation of the number of revolutions the tire goes through in a 
mile is way off.  You used the diameter of the tire in the place of the 
circumference.  The circumference of a 23.23" diameter tire is 72.97". 
Thus the revolutions per mile of the tire = 63,360" / 72.97 =~ 868.3 
revolutions per mile.

However, that assumes that there is a 1:1 gear ratio between the wheel 
and the speedo cable (that the speedo cable spins 1 revolution for every 
1 revolution of the tire).  Is this the case?

Regards,
Jon Heese

Bruce Benson wrote:
>  The 195/60/14 tire is 23.23" in diameter. A mile = 5,280 feet x 12"= 63360" 
> . Divide that by the tire's 23.23" = 2727.5 revolutions per mile. 60 mph is 
> a mile a minute so at 60mph the speedo gear is turning 2727.5 rpms.
> 
> Bruce Benson
> 
> _______________________________________________________________________
> 
> 
>> 6a. Speedo gear rpm.
>>    Posted by: "Bob Brandys" BobB@xxxxxxxxxxxxxx bob6351
>>    Date: Sun May 4, 2008 5:24 pm ((PDT))
>>
>> Does anyone know what RPM the speedo cable operates at?
>>
>> Bob
>>
>>
>>
>> Messages in this topic (4)
>> ________________________________________________________________________

------------------------------------

To address comments privately to the moderating team, please address:
moderators@xxxxxxxxxxx

For more info on the list, tech articles, cars for sale see www.dmcnews.com

To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnewsYahoo! Groups Links

<*> To visit your group on the web, go to:
    http://groups.yahoo.com/group/dmcnews/

<*> Your email settings:
    Individual Email | Traditional

<*> To change settings online go to:
    http://groups.yahoo.com/group/dmcnews/join
    (Yahoo! ID required)

<*> To change settings via email:
    mailto:dmcnews-digest@xxxxxxxxxxxxxxx 
    mailto:dmcnews-fullfeatured@xxxxxxxxxxxxxxx

<*> To unsubscribe from this group, send an email to:
    dmcnews-unsubscribe@xxxxxxxxxxxxxxx

<*> Your use of Yahoo! Groups is subject to:
    http://docs.yahoo.com/info/terms/



Home Back to the Home of PROJECT VIXEN


Copyright 2006 ProjectVixen.com.  All rights reserved.

Opinions expressed in posts reflect the views of their respective authors.
DMCForum Mailing List Archive  DMCNews Mailing List Archive  DMC-UK Mailing List Archive