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Old 05-01-2022, 11:22 AM
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Scott Stoneburg Scott Stoneburg is offline
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Default Air fuel meter

Hey guys, I have a FAST Air fuel meter, but have no way to reference the playback with RPM or time in the run. I don't have any other type of data logging system. What are you guys using to track and review this info? I have used the one I have and just used best guess to tune it in the past. But would like to see the A/F at rpm if possible.
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Old 05-01-2022, 01:18 PM
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No experience with this unit myself. A brief look at the product description makes it seem it is capable of outputting a signal to datalogging devices. Seems like your overall plans/goals would dictate a path forward on this. Lots of options. Most of the aftermarket engine controllers are capable of datalogging now and really more cost effective than standalone datalog systems. Hopefully someone experienced with this unit will have an easy option to offer.

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Old 05-01-2022, 02:56 PM
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I use a FAST unit mounted on my dash and have a GoPro mounted so all the gauges are visible in the frame. I start logging data just before I get to the line and stop logging after the stripe. It's been very easy to tune watching the data log replay and video from the run. Here is a run, start at the 3 min mark.

https://www.youtube.com/watch?v=JaHlDAiBTR8

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1967 Firechicken, 499", Edl heads, 262/266@0.050" duration and 0.627"/0.643 lift SR cam, 3.90 gear, 28" tire, 3550#. 10.01@134.3 mph with a 1.45 60'. Still WAY under the rollbar rule.
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Old 05-01-2022, 04:14 PM
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Quote:
Originally Posted by AG View Post
I use a FAST unit mounted on my dash and have a GoPro mounted so all the gauges are visible in the frame. I start logging data just before I get to the line and stop logging after the stripe. It's been very easy to tune watching the data log replay and video from the run. Here is a run, start at the 3 min mark.

https://www.youtube.com/watch?v=JaHlDAiBTR8
I could do that. Thanks for the tip.
Cool ride along too !

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Old 05-01-2022, 10:03 PM
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Quote:
Originally Posted by AG View Post
I use a FAST unit mounted on my dash and have a GoPro mounted so all the gauges are visible in the frame. I start logging data just before I get to the line and stop logging after the stripe. It's been very easy to tune watching the data log replay and video from the run. Here is a run, start at the 3 min mark.

https://www.youtube.com/watch?v=JaHlDAiBTR8

Nice run. Any idea on what the Track altitude is on that run?

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Old 05-02-2022, 09:18 AM
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New England Dragway in Epping, NH. The track is full concrete with a 2680' shut-down length and 90' elevation.

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1967 Firechicken, 499", Edl heads, 262/266@0.050" duration and 0.627"/0.643 lift SR cam, 3.90 gear, 28" tire, 3550#. 10.01@134.3 mph with a 1.45 60'. Still WAY under the rollbar rule.
The Following User Says Thank You to AG For This Useful Post:
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Old 05-02-2022, 10:06 AM
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The car was running 13.0-13.1 AFR during that run. Need to increase all jet sizes up by one size to bring it down to 12.8-12.9 where it runs the best.

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1967 Firechicken, 499", Edl heads, 262/266@0.050" duration and 0.627"/0.643 lift SR cam, 3.90 gear, 28" tire, 3550#. 10.01@134.3 mph with a 1.45 60'. Still WAY under the rollbar rule.
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Old 05-02-2022, 12:31 PM
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My LM1 had an input for an LM3 that would do rpm(I had to use a variable resistor to get it correct), G force and vacuum so I could plot it all out and log. It might had had one more channel also.

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Old 05-02-2022, 05:28 PM
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Quote:
Originally Posted by Scott Stoneburg View Post
Hey guys, I have a FAST Air fuel meter, but have no way to reference the playback with RPM or time in the run. I don't have any other type of data logging system. What are you guys using to track and review this info? I have used the one I have and just used best guess to tune it in the past. But would like to see the A/F at rpm if possible.
Scott, Back when I bought my FAST meter I did buy the RPM sensor for data logging and could never get it to work.

I do the same as Tony (AG) does

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