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Re: Speedo revs/mile

To: Jay_Laifman@countrywide.com
Subject: Re: Speedo revs/mile
From: Larry Paulick <larry.p@erols.com>
Date: Tue, 17 Oct 2000 12:07:26 -0400
Jay, she is probably referring to the connections to the trans.  Changes
can be made to the gear that connects the speedo cable to the trans,
which will change the number of revs of the cable and therefore the
speed.  Toploader are the same.

Larry



Jay_Laifman@countrywide.com wrote:
> 
> > The speedo is a completely different issue.  It is not fixed by gears.  I
> > know I am going to get corrected on this one.  But, this is as close as I
> > know - and as always, I'm willing to be corrected.  Attached to the head
> of
> > the cable is a flat disk with a magnet.  This disc fits in a flat metal
> > dish to which the needle is attached.  There is nothing connecting the
> dish
> > to the disk.  When the disk on the cable spins, it creates a magnetic
> > force that lifts/turns the dish and the needle.  As the disK spins
> faster,
> > the force increases and turns the disH further.  In order to calibrate
> the
> > speedo then, they don't change gears, but change the amount of magnetism
> in
> > the dish or the plate or both.  There is also, I think, and adjustment to
> > the resistance against the plate.
> 
> Ugh, look at that, I have to correct myself.   See the capitalized letters
> that I switched (disk and dish were switched on one sentence).
> 
> For what it's worth, Mo-Ma says that I need a 45 tooth something or another
> and that I already have a 32 tooth that mates with the 45 tooth.  She knows
> she can get 41 tooth something or anothers.  32X45 = 1440, what I need.
> 32x41=1312, which would be about 8% slow.  But, she can't be sure until she
> opens it up - and she was in a rush to meet UPS.  I'll have to talk to her
> more later.
> 
> But, I just realized that doesn't make 100% sense.  I think she said the 32
> tooth came out of the 1040.  That means that 1040 divided by 32 should give
> what tooth thing a magig I have - but, that works out to 32.5.  Don't know
> how they get a half tooth in there.
> 
> Jay

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