Mark Allanson
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| posted on 8/12/02 at 09:48 PM |
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Good Old Uncle Ron?
This is probably old ground but here goes.....
Today I planned to make the rear axle brackets ready to weld on next weekend. I am using Bluebird trailing arms (302mm between centres) so a bit of
maths to calculate different centres would be in order. Checked the book to find out what it shoud be, and bugger me there are two lengths (at the
pivot centres)for the trailing arms, page 64 says 11.5" and 12" on page 86.
Pages 72 and 73 also have conflicting diagrams for the pivot centres for the rear ends of the trailing arms.
There's more, the vertical distance between the upper and lower trailing arms is 4.3" on page 72 and 5.75" on page 64.
I have already set my chassis brackets to 5.75" so I will make taller axle brackets to compensate ( a larger distance between the trailing arms will
give an increased effective axle arc so I am not worried about this).
It is pretty obvious that I will have to do my own thing, but what I need to know is what is the ideal axle centreline height above the base of the
chassis and the ideal measurement from the centreline of the axle to the rear edge of B1
I know it wont make a load of difference because I havent fitted my rear arches or bought a prop, The only thing I am worried about is the rear end
geometry, shock deflection centres etc.
Uncle Ron doesn't seem to have made his mind up yet!
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Jasper
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| posted on 9/12/02 at 12:57 PM |
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I've set mine about 1.5 in above the chassis, but may have a bit of extra clearance at the top of the wheelarch once I've bought my wheels. As for
the other dimension, I just hung my axle on the brackets from the shocks to get them vertical then made the trailing arms to fit.
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