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Re: Bike speedometers in the roadster

To: VulForge@aol.com, datsun-roadsters@autox.team.net
Subject: Re: Bike speedometers in the roadster
From: Dan Neuman <dneuman@stars.sfsu.edu>
Date: Wed, 14 Jun 2000 23:31:23 -0700
Hi Russ,
        I think the driveshaft is the best idea.  I just need to figure out how
to mount the sensor... Hmmmm the driveshaft will move through an angle
as the rear end moves over bumps... maybe if I put the magnet on the output
shaft of the transmission.  Then I still have to figure out a way to mount the
sender within ~5mm. Oh, a trick a lot of MC guys use is to go to radio shack 
abd buy the strongest rare earth magnet possible, this will give a better 
signal and allow a slightly sloppier alignment. Another drawback is, is that it 
will probably take two people to do the circumfrence measurement-one to 
watch the wheel and one to watch the drive shaft-since you need to know how
far forward the car went in one revolution of the drive shaft...maybe I can
get this done this weekend.
        Daniel 69 2000\

At 11:29 PM -0400 6/14/00, VulForge@aol.com wrote:
>In a message dated 6/14/00 6:39:59 PM Central Daylight Time, 
>dneuman@stars.sfsu.edu writes:
>
><< Now I jsut gotta find a place to mount it. The tolerances between the
> magnet and the sender are very small. ~5mm.  I need to mount it somewhere 
> where that can happen and somewhere that will not get very hot. Any 
> suggestions??  >>
>
>How about the driveshaft?  That would be the shortest possible point, and the 
>circumference won't vary.  Of course it will read high when you spin the 
>tires!
>
>Russ
>67 1600




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