RogerC 136 Report post Posted May 30, 2008 Anyone got any idea where the CG is on a stock hardtop coupe? Quote Share this post Link to post Share on other sites
SlimeGold 69 15 Report post Posted May 30, 2008 CG? I tried to think of what that it is but sad to say I'm stumped:huh:. Quote Share this post Link to post Share on other sites
Arrowhead 10 Report post Posted May 30, 2008 Center of Gravity? Sorry, I don't know Quote Share this post Link to post Share on other sites
RogerC 136 Report post Posted May 30, 2008 CG = center of gravity Quote Share this post Link to post Share on other sites
cphsonic 11 Report post Posted May 30, 2008 Sorry no idea, only had mine weighed on a grain truck scale, never axle by axle or wheel by wheel. Quote Share this post Link to post Share on other sites
Truck 12 Report post Posted June 2, 2008 There's a way to calculate that with paper and pencil. It involves making a scale drawing in multiple views. Once you see how much your suspension "flexes" you can determine the CG. (on the Up/Down Axis.) I think the car weighs heavier in the front, so if you're looking for front/back bais-you're kinda outta luck, IIRC. Quote Share this post Link to post Share on other sites
d.reese 13 Report post Posted June 2, 2008 Yea, put it on a set of dirt scales at your local dirt tract shop. they can tell you rear and front percentages. Then do the math on the wheel base to percentage, should get you close. My guess will be 58% front 42% rear? Quote Share this post Link to post Share on other sites
d.reese 13 Report post Posted June 2, 2008 Another way would be (if you had the sub frames tied) to use 2 floor jacks and two pc's of say 1" pipe layed in the cups of the jacks. You could jack up both sides at the same time, moving front to rear until you got it to teater in one place. then you would know where ctr is. Do you need to know for racing , does it matter if it has an empty or full load of fuel? That will change the ctr, along with whether you are in the car or not also. Quote Share this post Link to post Share on other sites
bnickel 10,004 Report post Posted June 3, 2008 Another way would be (if you had the sub frames tied) to use 2 floor jacks and two pc's of say 1" pipe layed in the cups of the jacks. You could jack up both sides at the same time, moving front to rear until you got it to teater in one place. then you would know where ctr is. Do you need to know for racing , does it matter if it has an empty or full load of fuel? That will change the ctr, along with whether you are in the car or not also. that would be instant center not center of gravity, CG is an imaginary line that runs down the center line of the car from the side view, basically cutting the door, fender and 1/4 in half length wise and and you the plot the intersection points of the front and rear suspensions....that's not exactly right but it's close enough to give you a mental picture...sort of. Quote Share this post Link to post Share on other sites
coz 108 Report post Posted June 3, 2008 Well in my car the center of gravity is the passenger seat whilst occupied by my wife. She tells me she is the center of the universe so naturally she would also be the center of all gravity. Not sure she would like the word gravity to describe her though.... Quote Share this post Link to post Share on other sites
RogerC 136 Report post Posted June 3, 2008 I was just interested in knowing for myself where my car started at, if someone saw it in a book or spec sheet somewhere. I've started modifying the car so it would no longer be the same and I'm not concerned about it again till I'm done. coz, I can relate Quote Share this post Link to post Share on other sites
Truck 12 Report post Posted June 7, 2008 I've started modifying the car so it would no longer be the same It's better to say, "Raised" or "lowered" like it was intentionally done! Quote Share this post Link to post Share on other sites
