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Tire Rack

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Surprise, AZ
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Local Time: Feb 22 2020, 07:18 PM
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14 Feb 2020
Awhile back I purchased an IR camera attachment for my iPhone for another project. But, it can also be useful for autocross and other engine diagnostics.

Here is a scan of my tires after a run in the last event. Shows multiple temps across the tread, but also suggests that the deeper temps in the tread grooves show the deeper tread temperature.

I also use it to diagnosis engine cooling issues as shown in the engine picture after the runs.

This FLIR accessory is kind of pricey unless you are either a really serious autocrosser or have multiple reasons to buy it.

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14 Feb 2020
For sale... a used Innovate LM-1 wideband air/fuel ratio meter with internal data logging. Includes standard parts:

LM-1 data logger and control unit
Used wideband O2 sensor
New wideband O2 sensor
Extension cable for wideband sensor
Cigarette lighter power cord

Additional options:
Analog input module
Ignition pickup for analog module
Tailpipe O2 sensor mount

Instructions and software CD not included, but these can be downloaded from:


PC software Logworks:


The basic unit is still available as a new purchase from some sources for about $289 which does not include the extras of the ignition sensor, analog signal module of tailpipe adapter. A newer basic LM-2 costs about $349.

I bought the newer LM-2 because it supports OBDII interface and uses a direct USB to PC. The LM-1 has a RS232 interface to the PC which requires an readily available RS232-USB adapter. The LM-1 is very useful in setting older engines using carbs to get optimum air-fuel ratio and monitoring parameters from various sensors during test runs.

I'm asking $150 for this setup. It can be brought to the autocross on 2/15.

Please reply with PM or email to mark@windupkey.com

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27 Dec 2019
Ross Meyer decided he had to sell off his 1985 Scirocco which he used years ago in AZ Solo events. It was well maintained and he made some serious mods to the engine and chassis. It runs really great, but needed some new shoes. The old, hard Sumitomo's are pretty scary with the increased power.

Problem is... it has been a few years and hte SCCA has gone really off the rails with classes. Hard to tell where this car is classed these days.

"Stock" is gone in favor of "Street" and then there are the endless categories off of that basic classing. What makes it worse is that I can determine that this car could fit into a number of classes which have PAX factors that make no sense..... running what was historically considered a more competitive class can actually yield a better PAX factor. Logic escapes me here...:-(

In any case, I am giving it some new shoes (Falken Azenias) and will try to bring it out in January to test the waters.

Or, I could ponder bringing out the 1949 Ford with a warmed over 255 flathead V8; but the SCCA decided to exclude any version of the historic flathead V8 by making CAM-T only from 1954 and later. As it is now, my 1949 Ford has NO class it can run in.... :-( But, it is clear that the SCCA is really not interested in supporting any vehicle that is more than 10-years old in autocross.

Old dogs in old cars? Not relevant today.

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3 Nov 2019
I just purchased a 1985 Scirocco from a long time autocrosser, Ross Meyer. It is well prepared and fun to drive.

So, I thought that maybe I should enter it in an upcoming AZ Region solo event.

But then I looked at today's classes and WTF......?

Are we kidding...? Back in the 1990s there were minor suggestions to modified and/or add maybe a couple of new classes. Anybody who tried that was rebuked because they were trying to create a special "my class"...

Decades later I cannot grasp the range of "street" and other classes that have resulted today. Near as I can tell we now have a massive number of classes to reward competitors who could not either enter or compete back in the 1990s. What has changed? The message back then was that you either had to accept the classing structure or go elsewhere.

The hypocrisy of this should be obvious to those of us who had supported the SCCA Solo program as far back as 1990.

The good...maybe there is some new class of many which might let me enter a car with some mixture of mods.

The bad...I might actually have a modified car which has no chance....

Same old issue with the SCCA since the late 1980s.....pick and choose who will win....
31 Aug 2019
Has anybody tried DirtFish up in WA?


I became aware of this rally cross driver's school on an episode of "Roadkill".

Looks interesting, challenging, and fun.
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