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Re: Speedo out of calibration?

To: 6pack@autox.team.net
Subject: Re: Speedo out of calibration?
From: tr6taylor@webtv.net (Sally or Dick Taylor)
Date: Tue, 19 Apr 2005 12:30:41 -0700
Rick----As you and others know, the tach reading is independant to what
goes on with other instruments.  It is only by design when we compare it
to road speed. Triumph engineers figured out that when running with a
certain tire diameter, differential gear ratio, and the speedo gear
drive at the transmission, that we would see engine-to-road speeds as
shown in our handbooks and manuals.   Unless someone installed a tach
from another model, it should accurately read engine revolutions.

Dick

Rick wrote:
trinitygadget@alltel.net(<trinitygadget@alltel.neRE: Speedometer out of
calibration? 

Help me out here . . . how can our mechanical tach not be spot-on
"calibrated" when it's geared directly to the cam via the distributor
drive? 
Rick O.
72 TR6 




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