Center of Gravity for Rotisserie? - Team Camaro Tech
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  #1  
Old Oct 10th, 05, 08:37 AM
RockinRob's Avatar
RockinRob RockinRob is offline
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Rob
 
Join Date: Jul 2004
Location: Valrico, FL
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Default Center of Gravity for Rotisserie?

Is there anyone with a 67 convertible on a rotisserie that could measure from the pivot point of their rotisserie to the mounting point at the firewall and also at the rear.

i'm trying to fab up some arms that will allow me to mount mine either by the bumper mounting holes or by the leaf spring mounts. Just want to see where I need to be on length of arms.

I have seen bonecrushers plans, but am not certain on what the measurements should be for the convertible.

Any help would be appreciated.

Thanks
Rob
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67 base convertible, GMPP 350/330 HO, TKO500....
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  #2  
Old Oct 10th, 05, 01:23 PM
BBCamaro BBCamaro is offline
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Default Re: Center of Gravity for Rotisserie?

not sure on center of gravity, but most rotisseri's have an adjustable height at the pivot point so you can have multiple cars on it, i will include some pics, mine has 2x2x 3/16 tube for the connecting arms, they ar 15 inches long, and is a direct copy of accessible systems, 3000 lb model
http://hobbystage.net/camaro/media.c...8975116-006986
http://hobbystage.net/camaro/bbcamro...193-006987.jpg
2nd pic is how car attachment can be slid up and down to get cars weight as close to center of gravity as possible, making it turn very easy,
and for the rear bracket just copy the first pic i sent, you add 1/8 flat bar oin bottom of u bracket so it cannot turn, although it would not anyway.
go to www.accessiblesystems.com
the 2000-300 lb is ther version i copied for my own use. friend has one.
also do not mount it by rear tail panel it is only sheetmetal, mount right to rear leaf mounts andf call it a day, my mounting arm lengths are 15 inches.
jake
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1968 Camaro streetfighter, 18x10,18x12 ccw's,tq arm rear,apex c6 front sub,ls6 asa cammed dry sump,t-56,335/30/18 and 275/35/18 toyo r888
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  #3  
Old Oct 10th, 05, 01:48 PM
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RockinRob RockinRob is offline
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Rob
 
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Default Re: Center of Gravity for Rotisserie?

Jake, thanks for the info. I'll post some pics of what I have tonight.

What I'm really looking for is, when the car is mounted and easily rotated, what is the vertical distance from the center of the rotating pipe to 1) the subframe mounts at the firewall and 2) the same vertical distance from the leaf spring mounts in the rear frame rails.

Photo 1 on your webpage shows the mounting I am most concerned about. Can you measure what the distance is from the bushing at the frame rail to the center of the horizontal arm on your rotisserie, then from the horizontal arm up to the pivot pipe?

Thanks,
Rob
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67 base convertible, GMPP 350/330 HO, TKO500....
Taken around the block for the first time 12/2/07
Finaly getting some paint Sept. 2009
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Old Oct 10th, 05, 01:54 PM
rmadsen55 rmadsen55 is offline
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Default Re: Center of Gravity for Rotisserie?

I have some pics and diagrams with dimensions of BoneCrusshers Camaro rotisserie at my website http://www-personal.umich.edu/~rmadsen/rotator.htm This may answer some of your questions.
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  #5  
Old Oct 12th, 05, 05:03 PM
bonecrusher67conv bonecrusher67conv is offline
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Location: Arroyo Grande/SLO, ca usa
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Default Re: Center of Gravity for Rotisserie?

It was 8.25" drop from center in the front bracket for the convertible. But I've also used the 9.25" drop bracket for setup for the coupe on my convertible body and used 40lbs of lead shot in a diver's weight belt on the top of the windshield frame to counterbalance the longer arms. Don't worry about mounting to the bumper sheet metal as long as you use the three main rear bracket points. I've not seen any body deflection by using the bumper holes. Feel free to pass the plans along. I've know of folks in a Datsun 510 forum that have modified the design for that use too.
I've spent too much time on my new Road Glide and not enough time on my convertible. Maybe this winter I'll get some filler on it and paint it next spring. I hope!
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Old Oct 12th, 05, 05:15 PM
BBCamaro BBCamaro is offline
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Default Re: Center of Gravity for Rotisserie?

the other nice thing to not mouting to tail panel is you can work, blast, bodywork the panel when its on rotisseri, not when its back on ground, niether here nor there its all preferance
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1968 Camaro streetfighter, 18x10,18x12 ccw's,tq arm rear,apex c6 front sub,ls6 asa cammed dry sump,t-56,335/30/18 and 275/35/18 toyo r888
www.jakesrodshop.com
Jake's Rod Shop
207-595-0677
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  #7  
Old Oct 12th, 05, 06:57 PM
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RockinRob RockinRob is offline
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Default Re: Center of Gravity for Rotisserie?

thanks guys, as usual everyone is quick to help.

Rob
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67 base convertible, GMPP 350/330 HO, TKO500....
Taken around the block for the first time 12/2/07
Finaly getting some paint Sept. 2009
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