COG calculation - JKowners.com : Jeep Wrangler JK Forum
 
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post #1 of 7 Old 02-03-2015, 11:25 AM Thread Starter
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COG calculation

I am trying to figure out COG of my JK. To calculate the COG, one needs the following weight and height:
  • driver front
  • driver rear
  • passenger front
  • passenger rear
  • Wheel Base
  • Axel Height
  • Raised Axel Height

i have the height and wheelbase done but not the weight of the endivisual corners. anyone know where i can go to get all 4 corners wight in the MD, PA, and VA? I recently had my jeep on the scale but it only breaks down by front and rear. front = 2940 lbs rear = 2800 lbs

thanks
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post #2 of 7 Old 02-03-2015, 11:56 AM
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Look for race shops that have corner scales.


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post #3 of 7 Old 02-07-2015, 02:34 PM
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Out of curiosity what do you need the CG for?

Keep in mind that it varies with simple things like fuel level, top and doors on/off, passengers, gear, etc.
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post #4 of 7 Old 02-07-2015, 07:17 PM
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I am curious as well. The only COG calculations I have done are for aircraft.
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post #5 of 7 Old 02-07-2015, 07:51 PM
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I think with the height component in his data he is wanting to calculate at what point his JK will roll over.
It's too variable to go by a number on an inclinometer, though.
When it starts feeling light to the side, take action to level it out.

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post #6 of 7 Old 02-07-2015, 08:57 PM
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If this is to calculate the tip over angle then it also depends on the lateral traction of the tires. On a dirt incline the tires or ground could slip instead of the Jeep flipping. I was thinking the he was more interested in suspension calculations.

If I recall correctly, the number is around 24" for a stock TJ but I've never seen it for JK.

I agree, in practice the seat of the pants and the inclinometer are the best tools.
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post #7 of 7 Old 02-08-2015, 07:43 AM
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Exactly. It's not like you're going flying or anything.
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