[TR] zenith or su's ?

[Wayne Lee]

Here's a Wide Band Setup Complete with a Gauge that wouldn't look out of 
place in a Vintage Car
for less than one might pay for a single Weber DCOE Sidedraft Carb.
http://www.innovatemotorsports.com/xcart/product.php?productid=16277&cat=262&page=1

I understand the Throttle Disc position doesn't determine potential Airflow 
on CV Carbs hence me
sending the links to pictures of the Piston Lift Detection Gadgets.
Again here's the link to the Piston Position Indicator I was talking about 
getting a reading on by TPS
or Analog Rheostat. The Electronic means he described seems best.
http://www.terryhunt.co.uk/mini/pics/tech/picsc/pics.htm
Wayne

--------------------------------------------------
From: "Randall" <tr3driver at ca.rr.com>
Sent: Wednesday, December 02, 2009 2:56 PM
To: "'Triumph List'" <Triumphs at autox.team.net>
Subject: Re: [TR] zenith or su's ?

>> They sell Air/Fuel mixture gauges that are cheap enough
>
> Unfortunately, the cheap ones don't tell you what you want to know.  They
> are only accurate right at Lambda = 1.0; which is neither best power nor
> best fuel economy.  "Wide band" sensors are available, but are 
> substantially
> more expensive.
>
>> If you could get a throttle position sensor or something like
>> a rheostat hooked up to a rig like this it would be very informative.
>
> But, throttle position doesn't directly translate to piston position.  You
> can infer piston position from throttle position & engine rpm (with maybe
> some correction for altitude/air density), but it varies with your
> particular setup and how are you going to calibrate it?
>
> These are exactly the same problems one faces when setting up a fuel
> injection system.  You need to know the actual airflow into the engine to
> know how much fuel it needs.
>
> -- Randall