Rocker offset question / problem
Thread Starter
Burning Brakes
Joined: Jan 2007
Posts: 1,104
Likes: 12
From: Woonsocket Rhode Island
Rocker offset question / problem
Looking for anyone and everyone who can explain why our rockers are offset.
I am getting a lot of great help with measurements from members including “out2kayak” who started the following thread with his project who suggested that I post this thread.
http://forums.corvetteforum.com/c1-a...free-bird.html
I have rebuilt most of the bird cage and it is “close” to being OK and can be fine with a
few tweaks with the right tools and/or shims. Mine was slide slammed sometime in it’s past but there is no documentation supporting that. I suspect that the bottom of my drivers hinge pillar is pushed in about 3/8”. The windshield frame measures fine on both cars.
The question: When I drop a plumb line from the top corner brackets of the windshield frame to the base line of the left and right rockers, there is an offset of as much as 1 1/2”
or less if you split the difference from left to right. Out2kayak has a photo in his thread showing that his is also offset. We cannot figure out why! Figuring that the cars are symmetrical left to right I can’t find anything causing this issue so there is doubt that there really is a problem?
Any comments?
I am getting a lot of great help with measurements from members including “out2kayak” who started the following thread with his project who suggested that I post this thread.
http://forums.corvetteforum.com/c1-a...free-bird.html
I have rebuilt most of the bird cage and it is “close” to being OK and can be fine with a
few tweaks with the right tools and/or shims. Mine was slide slammed sometime in it’s past but there is no documentation supporting that. I suspect that the bottom of my drivers hinge pillar is pushed in about 3/8”. The windshield frame measures fine on both cars.
The question: When I drop a plumb line from the top corner brackets of the windshield frame to the base line of the left and right rockers, there is an offset of as much as 1 1/2”
or less if you split the difference from left to right. Out2kayak has a photo in his thread showing that his is also offset. We cannot figure out why! Figuring that the cars are symmetrical left to right I can’t find anything causing this issue so there is doubt that there really is a problem?
Any comments?
Race Director
Joined: Feb 2004
Posts: 11,030
Likes: 2,587
From: Del Boca Vista FL
I would think that the bodies of the cars are symmetrical from side to side.
I do know that the mounting brackets that attach in the inner fender wells for side exhaust shields are physically different for right and left; with an offset front to rear measurement on the bracket.
Maybe it is the inner fender wells that are different.
Rich
I do know that the mounting brackets that attach in the inner fender wells for side exhaust shields are physically different for right and left; with an offset front to rear measurement on the bracket.
Maybe it is the inner fender wells that are different.
Rich
Last edited by BADBIRDCAGE; Jul 13, 2010 at 02:22 PM.
Thread Starter
Burning Brakes
Joined: Jan 2007
Posts: 1,104
Likes: 12
From: Woonsocket Rhode Island
Your name says it all... bad bad birdy cage, 
.
I am really confused with the fact that I can't figure out where the offset is created! The doors seem to fit each side but what ever I am measuring is not where it is.
I will take a different approach tonight and measure from the windshield fame centerline to the outside. Up to now I have worked the full left to right sides.
It has to be there... I just got to find it. Another member told me, just make it fit!
.I am really confused with the fact that I can't figure out where the offset is created! The doors seem to fit each side but what ever I am measuring is not where it is.
I will take a different approach tonight and measure from the windshield fame centerline to the outside. Up to now I have worked the full left to right sides.
It has to be there... I just got to find it. Another member told me, just make it fit!
Thread Starter
Burning Brakes
Joined: Jan 2007
Posts: 1,104
Likes: 12
From: Woonsocket Rhode Island
BBCage, I agree with you now that I have exhausted every possible way of finding the difference between left and right.
Instead of checking the rocker offset, I looked into the hinge pillars and found that they are different from beyond the w/s frame outward. On mine, the drivers outer edge is 1" beyond the frame more than the pass side. Doing a crisss cross from the hinge bolts and metal stampings everything matches.
Search is done... time to move to the next part of the project.
Instead of checking the rocker offset, I looked into the hinge pillars and found that they are different from beyond the w/s frame outward. On mine, the drivers outer edge is 1" beyond the frame more than the pass side. Doing a crisss cross from the hinge bolts and metal stampings everything matches.
Search is done... time to move to the next part of the project.
