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Old 05-09-2005, 11:36 PM
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rotisserie adjusting ??????

im looking for some tips on adjusting or balancing my rotisserie
im not sure if i built it wrong or if i should make a sliding center bar instead of the one with holes
i've made them before but back then i didn't really worry how hard it was flip the body completely . now i guess i want it to flip or rotate easier
currently it takes about 50lbs force to flip
what can i do
here is an idea of what i have and i've posted a picture
holes are 1 1/2" apart and there is like 8 holes
i'll try to post pictures tomorrow
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Old 05-12-2005, 02:44 PM
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Hey hoss-

I assume your center bar with the adjusting holes moves the spin center in relation to the car.

I also assume that in the current hole, the car wants to settle "top up" and if you move a hole down, it wants to settle "bottoms up". If this is the case, just drill a hole between these two, and you should be close.

If the car does not settle rather it turns hard all the way around, you may have your front and rear pivots out of adjustment. They need to be lined up as if they were connected by a single pipe (at the same height is usually good enough)
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Old 05-12-2005, 04:04 PM
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The front and rear mounts will be different. There is no real tried and true method as to calculating where it should be but you need to have the mount made to where the pivot point is midways or a little more towards the bottom of the car to balance out the weight. You want to have an even amount of weight at the top and an even amount at the bottom for ease of rotating the car. If the car wants to rest, roof down the pivot point needs to be moved down towards the bottom. If the bottom wants to go down all the time (roof up) then the pivot point needs to be moved up. Your mounting support should start out at midways on the car with enough adjustment up and down. Probably a foot to eighteen inches of adjustment should be adequate (6-9" each way of the pivot point) Check the sketch I attached. Hopefully this will help you out somewhat. Just don't laugh at the crude drawing. LOL!!

Kevin
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Old 05-13-2005, 02:06 AM
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should i center off the car to the center pivot point
if you notice my drawing the front of the car is taller than the rear ,should i center each side differently
as long as they are both centered or should i center both front and rear mounts the same
i haven't flipped the car over ,i've turned it both ways and it seems to be as hard when tilting both ways ,so i figure it could be that i just centered both arms the to the center of the front of the car.
i'll try to center both front and rear to center and see if it makes a difference

thanks

SDII, Kevin45
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Old 05-13-2005, 03:15 AM
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The car needs to set level. By this I mean the bottom of the car level. Then kind of pick a mid point to where it looks like the weight will be centered. It will take two hands and some to rotate it nut it should be mothing that you cannot do youtself quite easily. If it is hard to rotate then move the car and mounts higher towards the pivot point after initally mounting. That is if the bottom of the car is hanging down. Also when you built your rotisserie, did you make sure the pivot points were square and straight. You might try adding a little grease to them just in case they are on a slight bind. Like SDII stated..the pivot points needs to be straight in line. Check my next sketch. But the mounting brackets will vary in length from fron to back. Mounting is the same as mounting a turkey to the BBQ rotisserie. Too much weight (weight not centered) on one side or the other and it flops over.

Kevin
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Old 05-13-2005, 07:28 AM
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I have a similar problem, I built one for my 39 chevy and it has worked well. I built feet to level it the problem I am going to have is how do I rotate the body without touching it when it comes time to paint? How does everybody else do it?
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Old 05-13-2005, 09:59 AM
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Look Ma No Finger Prints

Hello Dant,

Rig up a crank handle on the end of the rottiserie. Build a stop so it wont go all the way over on both sides. First time I primed a body on a rottiserie, I was pumped up. I flipped the body upside down and it dawned on me now the bottom of the floor was as high as the roof was.

45 to 60 degrees is about all you need to paint the top or the bottom.

Keith
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Old 05-13-2005, 11:12 AM
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There's always another option. Wind about 3 wraps of cable around the rotating pipe and secure the middle of the cable to the pipe with some simple clamp. Mount a cheap boat winch directly underneath. Anchor about 3 winds of cable to the winch. This way, you can use the gear affect of the winch to turn the car over, and hold it in place. With the cable secured on both the winch and rotating pipe, you can wind it both ways. The only drawback is when you change heights, you will have to adjust the cable. The tighter you get the cable, the less the car will "over rotate" when off balance.
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Old 05-13-2005, 01:01 PM
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boat winch

Quote:
Originally Posted by Beenaway2long
There's always another option. Wind about 3 wraps of cable around the rotating pipe and secure the middle of the cable to the pipe with some simple clamp. Mount a cheap boat winch directly underneath. Anchor about 3 winds of cable to the winch. This way, you can use the gear affect of the winch to turn the car over, and hold it in place. With the cable secured on both the winch and rotating pipe, you can wind it both ways. The only drawback is when you change heights, you will have to adjust the cable. The tighter you get the cable, the less the car will "over rotate" when off balance.

Great idea thanks for the tip, I see modifications on the next project.

Keith
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