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Post by johna745 on Nov 1, 2006 15:51:00 GMT -7
Does anyone know why most people use the end of the block with the wheels farthest from the end as the front of a car? My son and I where starting to build a car for some upcoming district time trials,and he asked why it is done that way.All I could think of was it has something to do with weight distribution.It almost looks like if the longer end was in back,it would let the weight stay farther back longer on the drop.I guess you would have to make sure the front end was'nt too light.Can anyone help?
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Post by 2FAST4U on Nov 1, 2006 17:55:03 GMT -7
JAC, you are right on the money. ;D but you need to put the long end in the front and the short end at the back...
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Post by PDDR on Nov 2, 2006 14:21:28 GMT -7
Does anyone know why most people use the end of the block with the wheels farthest from the end as the front of a car? After doing some research on this this is what I found. If the weight is in the back of the car, the wheels and weight will remain on the downhill portion of the track longer and let gravity work longer.
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Post by johna745 on Nov 2, 2006 14:54:15 GMT -7
Thanks guys!
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Post by JOKER on Nov 8, 2006 12:56:30 GMT -7
[glow=red,2,300] MAXIMIZING THE FORCE OF GRAVITY ON A PWD CAR:[/glow] - WEIGHT & REAR WHEELS AS FAR BACK AS POSSIBLE
- WEIGHT AS LOW AS POSSIBLE (MANY OVERLOOK THIS)......WEIGHT BACK/LOW PUSHES LONGER ON CAR THAN WEIGHT BACK/HIGH....GET IT?
- ALIGNMENT & SET-UP IS CRUCIAL WHEN YOU DO THIS DUE TO FRONT BEING SO LIGHT
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Post by 94 GT Laser RC on Jan 24, 2007 19:32:53 GMT -7
Why is the weight better LOWER on the car.
Also, if in this example you use a 3/8" lead piece and put one piece behind the back axle, there is no room for another behind, so you would put one just in front. Now, isnt it better to put one led bar on top of the back one than having it lower on the car and in FRONT of the rear axle??
Just a thought High up and back better than lower and 3/4" more in front? RC
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Post by P D D R 2 on Jan 24, 2007 21:01:27 GMT -7
Why is the weight better LOWER on the car. Also, if in this example you use a 3/8" lead piece and put one piece behind the back axle, there is no room for another behind, so you would put one just in front. Now, isnt it better to put one led bar on top of the back one than having it lower on the car and in FRONT of the rear axle?? Just a thought High up and back better than lower and 3/4" more in front? RC
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Post by Blue Dawg on Feb 8, 2007 9:01:25 GMT -7
Why should the rear wheels have to be as far back as possible? I got a 3.14 car that was made with a stock block backwards.
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Post by M7 Racing on Feb 8, 2007 9:48:05 GMT -7
We have built cars that were fast with the block being technically backwards. However, we are now at the stage where we are looking at shaving thousands of a second off of our times so minor changes to weight placement are key to us. We have to use original slots but can cut from the back and add it to the front. By moving the wheels back we have been able to move our COM slightly back and still keep the front stable which has been our receipe for success. 1/4" difference in COM is one of the keys from our cars running in the top 5 in the district to now blowing away track times. We are now looking at how far to push the limit but where we have our weight placed now if we did not have the wheels pushed back our front would be all over the place. Currently we are running 2.18's on an old wood 32' track with a standard wheel base (and some special wheels that have a little edge to them )
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