TAC Tech => Exterior => Topic started by: 737driver on December 29, 2021, 11:30:41 PM
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Just curious if any one has ideas to find a reference point to balance the body on a rotisserie. Specifically, the balance pivot point so that the rotisserie can rotate the body easily and balanced.
Thanks,
Jim
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I always though you'd have to do it on the rotisserie. If you spend more, you can get one with an adjustable swing just for that. Of course, if one person figured it out on a 2nd gen F-body and then told us, yeah, we'd all know then. I've got one here, but never had a car on it.
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There is a lot more mass at the floor than roof.
For a body shell, I would guesstimate 6-10” off the floor.
Set and adjust an inch or two at a time.
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Jim, I built my own rotisserie. I made brackets out of tube steel that mounted where the stub frame bolts to the body, and I made a plate with the same bolt pattern as the rear bumper welded to a piece of tube steel for the back. I have long ram hydraulic jacks to raise the car. It did not spin freely so I hooked up a come along winch and as I cranked on that it turned the car. Contrary to what it sounds like it was pretty safe, I had the bottom of the car at a 90 to the floor and every thing worked great. I will see if I have any pics of car rigged up.
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Jim, I attached mine to the front subframe holes in the body and into the rear bumper brackets. It wasn't completely balanced, but close enough. When I rotated the body I would just clamp down the rotisserie hold downs to keep it from rotating. It worked out well for both the work I did on it and the work the shop did. Here are some pictures. The brackets for the front worked right out of the box. For the rear mounts I used some boxed channel steel to make some brackets to bolt to the back side without damaging the sheetmetal. It worked out well. This was a used rotisserie I purchased from someone and then ended up trading to my body shop for labor for a few more dollars worth of work than I paid for it.
(https://lh3.googleusercontent.com/qJmxluj87hXekf2vEKQoisNtwo9jQC9uBp17TysLisrW7dvMqdP7vcbuf9l1urm_OPyaLLnCywrRiBAd5uy8FOuR2wPpklRW5rlFmIvn-wIcAjTCSX1gVDiddsQU7qnqYpGltf_lmA=w2400)
(https://lh3.googleusercontent.com/e6SLn1pd9dVAfYDtPXOTVbrq_MFaXQcuNPWXtQxuJpuTSZdnZ7hurRuooQfd-LZHhYgbWGTnqF0yA8DZKRvfUxY6aqQtzQiZqytd75PCYxxZoHS1_qIuNNnHU6tpT8Hvn-jQgzmcgA=w2400)
(https://lh3.googleusercontent.com/4kUS3QZc6nZAKDbGkZqo2ypw2KnfhUDzllu5Y93yNxddyv7fcsDt6t7TFdAopr94xZPviUOtCuKyV8gv5pLHa97sDtwRm1VvOmkQYD2812UhjA8JJ_SAF4lqN_7mgo-8wDz9LJBs3A=w2400)