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Wacko Speedo/Tach?

To: "triumphs_list" <triumphs@Autox.Team.Net>
Subject: Wacko Speedo/Tach?
From: "Charles Ackerman" <C2H60_@email.msn.com>
Date: Mon, 21 Sep 1998 21:38:18 -0700
Hi everybody,

Recent posts about incorrect speedo/tachs got me wonder'in.
So I got the TR on the road with a pen and paper. (Tire size 195/65R15)
MPH        RPM        RPM (OD)
30            1500        1300
40            2000        1600
50            2400        2000
60            2800        2400
70            3300        2700
Is there a formula to determine if the speedo/tach. is wacko?

Charles Ackerman '70 TR6 CC51493LO North Bend WA






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