Tom,
My Edelbrock gauge #6593 has 7 led steps, in 0.5 A/F ratio spacing, from
12 to 16 F.A, ratio.
(12, 12.5, 13, 13.5, 14, 14.5, 15, 15.5)
It is VERY sensitive to the slightest throttle, or load change. As it
is very sensitive to the changes,
it is a good deal better in sensing small changes, and the lights do
reach the limit of measurements,
depending on load, throttle position, tuning, etc. It is sensitive
enough to register even small increments
of loading and throttle position.
AND, it is very affordable.
Remember, even a dyno test is only good for 1 load/throttle setting at a
time. It is good for steady state
performance, but useless during the transients of acceleration/load change.
I believe Stewart-Warner has a needle (or light) round dial version, but
I cannot vouch for it's sensitivity.
It is cheap. Try it.
Steve
___
Steve Laifman
Editor - TigersUnited.com
Thomas Witt wrote:
>Steve,
> I think the main difference is that this model operates off a "wideband"
>sensor and thus indicates a broader range of rich and lean than the model
>you have. The style you have while still indicating theoretically ideal A/F
>ratios (and a sharp slope on either side) likely doesn't swing far enough to
>"customize" the range. If I could put into an archery analogy yours shows
>very near the bull's eye and this model shows more of the target. For those
>willing, a simple version can be built using an O2 Sensor, green, yellow and
>red LED's, resistors and possibly a small amplifiers circuit. There are web
>sites showing how.
>
> Too bad Club's don't buy one (to spread the cost) and owners install the
>sensor. It might gives Tiger owners incentive to meet and tinker.
>
>Tom Witt
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