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Re: [Fot] TRANSPONDER location - frame works ok

To: Scott Janzen <s.janzen@comcast.net>
Subject: Re: [Fot] TRANSPONDER location - frame works ok
From: Gary Schneider <garygret@sbcglobal.net>
Date: Tue, 10 Aug 2010 17:29:06 -0700 (PDT)
Scott,
Sounds like 8" is still in the workable range then. We had trouble in the 4-6" 
area on two different cars. If there's ever any question, your T&S folks can 
tell you how many hits they get from each transponder.
Thanks and regards,
Gary
To: Gary Schneider <garygret@sbcglobal.net>
Cc: n197tr4@cs.com; fot@autox.team.net
Sent: Tue, August 10, 2010 6:55:23 PM
Subject: Re: [Fot] TRANSPONDER location - frame works ok

I have mine mounted on the frame rail, center about 8" above grade, and had no 
troubles.


On Aug 10, 2010, at 6:01 PM, Gary Schneider wrote:

Joe,
An important point is that the transponder needs to see the track not only 
straight down but also forward and back by at least a few inches. As you cross 
the line the transponder makes a number of hits: weaker as you approach/depart, 
strongest as you pass directly over. It triangulates on the signal strength 
coming and going to find the exact millisecond you are centered over the loop. 
Ideally there should be an uninterrupted cone of vision from the transponder 
bottom to the asphalt. AMB tells you the maximum height is 2 feet. But they do 
not tell you there is a also practical minimum height of around 9-12 inches: 
too 

small a cone of signal means too few hits to accurately position you. That 
means 

don't do the obvious and mount it on the frame. This generates a weak-signal 
warning to the T&S system and you will likely get a love note at pit in to 
change it. (Been there, done that.) Mid-height inside the wheel well is AMB's 
suggestion, but outside the front valance works great too and provides easier 
access for removal.

Hope this helps,
Gary Schneider






________________________________
From: "n197tr4@cs.com" <n197tr4@cs.com>
To: fot@autox.team.net
Sent: Tue, August 10, 2010 2:57:10 PM
Subject: [Fot] AMB RECHARGEABLE TRANSPONDER Questions

I am about to install.

What is the favored location on a TR3-6 chassis for location of the
transponder?

Any caveats?

Orientation?

Thanks!

Joe
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