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+--- Thread: Ruby chassis central brace position ? (/showthread.php?tid=5074)
Ruby chassis central brace position ? - John Cornforth - 12-10-2020
Greetings
I am in the throes of setting up a Ruby semi-girling cross shaft. To help me get the multitude of bits all in their right positions before I start making felt seals, I need to know a critical chassis dimension. What is the offset from the closed face of the fore-aft central brace (the one with the row of big holes) to the centre line of the car ?
I have already had a couple of goes at getting this information:
Approach 1 was to grovel underneath and get a faceful of black oil. This resulted in a measured 2 3/8 inches, the brace itself has an upper and lower flange which I measure as 1 inch wide.
Approach 2 was to look at the A7CA archive, but the dimensions on the drawing I found were too fuzzy to read, unless I am doing something wrong.
Suggestions welcome !
P.S. I make the distance between the centres of the outer bearings 20 5/32 inches, but if anyone disagrees I'd be interested.
RE: Ruby chassis central brace position ? - Colin Morgan - 13-10-2020
Looking at the A7CA archive Ruby chassis drawing, I can see the dimension you need, and it is fuzzy, but it looks like 2 7/8 when blown up?
One dimension I can read on the drawing is 15". If I scale off the drawing, with that area magnified, then 2 7/8" seems reasonable for the offset dimension. (15" is 5.25 times longer than that dimension.)
RE: Ruby chassis central brace position ? - John Cornforth - 13-10-2020
Thanks Colin
A bit of lateral thinking !
I suspect that A7CA drawing is one of the ones in line to be re-digitised with better resolution.
Time to jack up the car a bit higher and dive in again with the tape measure.
When I finally get the cross shaft together I plan to share the detailed assembly drawing I an currently preparing. There does seem to be conflicting information about the number of felts and their positioning. If anyone knows for sure where the single cup shaped washer/felt ( 1 inch ID) goes, I would be interested.