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Old 02-11-2007, 06:19 PM
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front caster angle

hello, I am trying to modify an old non ford frame to accept a 34
3 window coupe . I have been trying to design the front cross member
that will let me use a straight axle . I have noticed that several companys
offer one to fit the ford frame and say that it has the proper caster angle built in
can any one explain this .
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Old 02-11-2007, 08:31 PM
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Quote:
Originally Posted by 34pain
hello, I am trying to modify an old non ford frame to accept a 34
3 window coupe . I have been trying to design the front cross member
that will let me use a straight axle . I have noticed that several companys
offer one to fit the ford frame and say that it has the proper caster angle built in
can any one explain this .
The angle that the spring bracket welds to the frame sets the caster.
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Old 02-11-2007, 10:49 PM
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If you haven't already chopped up that 34 3W body I would recommend that, short of buying a new or used correct 33-34 Ford frame to use, you buy some rectangular box tubing and fab up a frame which you build to fit the body rather than wrecking a good(I assume your body is good) body trying to "Fit it" to another frame, non-Ford even. You will end up with a real car rather than the usual rolling stuff that these oddball frame deals tend to be.
Not looking to hurt your feelings but trying to get you on the right path. If any of your friends know anything about early Ford hotrods and haven't said anything about this, they are not your friends.
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Old 02-11-2007, 11:23 PM
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I would agree with Pasadena..as when I built my chassis I looked at the alternatives and went with the box tubing as it looks much nicer and is easier to work with..also if one is on a tight budget rolling your own works out well..

The question on the caster angle is a good one as we angle the spring perch so the spring does not have any twist to it when in the final position..doing that allows the spring to work freely without binding in travel..

I personally like somewhere in the area of 7-10 degrees of caster in those early Ford front ends as they seem to drive better in that area..I also like the 4bar version as opposed to hairpins as those handle better and I am a guy who goes for the performance rather than some "style" that may be in vogue at the moment..

Now on the front end I would recommend getting a kit from TCI or Speedway or any other favorite supplier that you may like and get the plain finish to keep the cost down..at the end of the day you will be glad you did..

Just my opinion..

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Last edited by OneMoreTime; 02-12-2007 at 12:00 AM. Reason: Other stuff to add
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Old 02-12-2007, 04:42 AM
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Talking to all the blokes at Lake Gairdiner last year, the concensis was - over 7 degrees and all 4 bar. (Lake Gairdiner is our Bonneville).
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Old 02-12-2007, 07:41 AM
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front caster angle

Just to be clear ,is the spring is mounted on a forward angle with the
front crossmember ?
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Old 02-12-2007, 09:13 AM
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You really can't set this angle of perch until you have established your car's ride height at each end and tire size. A big rubber rake after setting up with frame level can "modify" your setting a lot.
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Old 02-12-2007, 03:28 PM
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front caster angle

I'm starting to see . There is more involved than one simple angle.
Thanks for the help.
just for the record , i'm reworking the frame , not the body
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Old 02-12-2007, 03:51 PM
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Normally on a straight axle, the CAMBER angle is built in to the axle if using kingpins for example. The caster is set as described above depending on what you have.
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