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Holley 2 axis g meter #2746307
02/25/20 02:21 AM
02/25/20 02:21 AM
Joined: Jan 2003
Posts: 26,730
Oregon
A
AndyF Offline OP
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AndyF  Offline OP
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Joined: Jan 2003
Posts: 26,730
Oregon
Picked up a g-meter for my Duster project. The Duster is more of a pro street car than a g machine but figured I'd give it a try. Had we converted Tim's red brick to EFI this g meter would've been one of the first things for us to install. Cool technology. Just take it out of the box and plug it into the EFI system and bingo, you have X and Y acceleration data logged into the ECU.

https://www.holley.com/products/fuel_systems/fuel_injection/modules/parts/554-162

Re: Holley 2 axis g meter [Re: AndyF] #2747910
02/29/20 11:23 PM
02/29/20 11:23 PM
Joined: Nov 2008
Posts: 1,465
Lethbridge, AB, Canada
dangina Offline
pro stock
dangina  Offline
pro stock

Joined: Nov 2008
Posts: 1,465
Lethbridge, AB, Canada
hey andy cool product! My question is how would you use the data for autox? New to the technology so I'm not really sure how to turn this into useable data....teach me!

Re: Holley 2 axis g meter [Re: AndyF] #2748022
03/01/20 02:27 PM
03/01/20 02:27 PM
Joined: Dec 2003
Posts: 18,653
Trumussia
J
jcc Offline
No politics..
jcc  Offline
No politics..
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Joined: Dec 2003
Posts: 18,653
Trumussia
What sample record rate on the G meter?


"I am really smart"
Re: Holley 2 axis g meter [Re: jcc] #2748029
03/01/20 02:54 PM
03/01/20 02:54 PM
Joined: Jan 2003
Posts: 26,730
Oregon
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AndyF Offline OP
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AndyF  Offline OP
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Joined: Jan 2003
Posts: 26,730
Oregon
Sample rate is a variable in the Holley system. You can sample up to 100 times a second but the data files get really big. I usually set the system up to sample at 20 times a second. That works pretty well for drag racing. When I set up a drag car I have the data logger turn on once the throttle position is greater than 80% and then it turns off after 20 seconds. That usually captures the burnout and the pass. Autocrossing would probably require a different trigger and perhaps a different data rate and length.

Re: Holley 2 axis g meter [Re: AndyF] #2749465
03/05/20 11:52 PM
03/05/20 11:52 PM
Joined: Jan 2003
Posts: 26,730
Oregon
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AndyF Offline OP
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AndyF  Offline OP
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Joined: Jan 2003
Posts: 26,730
Oregon
I had a bracket made to mount the g meter sensor to the roll bar. The bracket looks nice and is super solid.

DSC_4116 (Large).JPG
Re: Holley 2 axis g meter [Re: AndyF] #2749501
03/06/20 08:49 AM
03/06/20 08:49 AM
Joined: Dec 2003
Posts: 18,653
Trumussia
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jcc Offline
No politics..
jcc  Offline
No politics..
J

Joined: Dec 2003
Posts: 18,653
Trumussia
I wonder how results are impacted by the sensors location on the chassis, seems in a somewhat central location, as pictured, measuring any yaw reaction would be difficult, vs say over rear axle, and this point is more in the frame of autocross/RR vs 1/4 mile.


"I am really smart"

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