checking my work

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Tore into MudShovel late last night and found not only did I drill bad causing the left rear to be toed out, I was off center by a 1/16" for my weight hole causing a 25 gram differential on the rears with that extra weight being on the non-dominant side. Now I know I checked for square after the drill but then again I removed the weight pocket after the drill. I highly doubt doing so would've tweeked that axle hole but who knows. The disc weighs 3.8oz. Gonna drill the rears back a 1/4" to achieve the standard 5/8" and switch the DFW to the other side just to see what happens. Maybe a lighter disc so I can balance the weight more by adding cubes. Being able to dissect old cars like a forensic at a crime scene is causing me great joy
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I like your use of the graph paper, using it as a check for squareness of a drilling. Quick, cheap and easy. Great idea. I know it has been mentioned before, but it certainly is worth another mention and actually seeing it in use. A picture is worth many words. BTW, great Car Scene Investigation work too!
 
Re: Being heavier on the NDFW side rear wheel.......You only have one wheel on the ground on that side. On the DFW side the load is shared by two wheels. So unless you offset the weight behind the rear wheel on the DFW side you will have different rear wheel weights. Offsetting the weight in front of the dominant side rear wheel also adds to the DFW load so it has a lesser effect on shifting load from the ND side to the dominant side. (If being balanced in the rear even matters.)

IMHO, the heavier loaded rear wheel is more dominant than the lighter loaded rear wheel. It controls the direction of the rear end of the car. On your now unweighted car, if you put an unbent axle in the DFW, tape 25g of cubes (the amount of your discrepency) to the body next to the toed out axle and roll it down your tuning board you can see how hard it's pulling. If the NDFW is toed out, it tries to turn the car (in your case) to the right.
 
Car Scene Investigator- I like it!! Sitting here thinking about, if my drill press was unsquare then both axles should still be parallel. I think my Proxxon XY table flexed and is my #1 suspect! I did roll the car front and backwards and the wheels migrated to the axle heads but with such a slight toe it did not show up.(?) My eyeballs aren't the best these days, guess it's time to bust out the ol' glasses. Witnessed a video where shims were placed under the XY table suspending the actual unit. Guess I know what's on my agenda today/images/boards/smilies/smile.gif

Bracketracer- that is awesome advice, never looked at it that way! Unfortunately I drilled my DFW at a compound angle which I now realize may not be the best route. But then again my floater was drilled straight so I should be able to tinker around somewhat.

Update:
Hopefully this will eliminate any drilling inconsistencies I've been having. Tried to snap the pic with Lucy in mid air but was a spit second too early!
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I see Lucy, the cat I'm guessing, to the left of the picture, she looks focused on something. Oh yeah... the setup looks good too. Rock solid and sturdy looking.
 
I rescued Lucy 2 years ago as she was destined to become a snack to her neighbors German Shepard. This past summer a huge feral tom cat attacked her and bit into her joint on her right shoulder resulting in a massive infection and 3 trips to the vet- a drain tube was inserted. Needless to say the bill exceeded the Proxxon and the XY table combined/images/boards/smilies/eek.gif.