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Re: Tachometer Error

To: Ned Smith <smithn00@kitepilot.net>
Subject: Re: Tachometer Error
From: Dave & M <rusd@velocitus.net>
Date: Sun, 06 Aug 2006 12:15:20 -0700
Ned,

Some of the "multi function timing lights" are notoriously unreliable & 
inaccurate. Before changing anything, I would check rpm with a known 
good electronic tach such as used by the better service shops.

Dave Russell

Ned Smith wrote:
>  Now that the engine is running reliably, I broke out my brand new, multi
> function timing light to fine tune things. This revealed a large difference
> between actual and Tach RPM. Roughly 55%. The Tach reads 1550 when actual is
> 1000, 3100 vs. 2000. The archive shows that this is adjusted by the loops of
> white wire on the back of the Tach.
> 
> In this case should I have more or fewer loops? Larger or smaller diameter
> of loop?
> 
> 
> 
> Your comments are greatly appreciated,
> 
> 
> 
> Ned Smith
> 
> BJ8
> 
> near Chattanooga, TN




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