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The term camber as referred to a leaf spring is the amount of curvature
of the spring leaves.
An unloaded spring placed on a flat surface might have the eye ends
several inches higher than the spring center/axle attachment. This
difference is called free camber. Eg- A spring might have 3 3/4" of
difference, positive camber.
When the same spring is installed & loaded it flattens out to the
position called loaded camber. This might typically be zero - flat,
slightly positive - still a bit of curve upward on the ends, or negative
- center higher than the ends.
The shop manual for a BN1-2, shows a free camber of 3 3/4". When loaded
to 490 pounds the spring should have about 1/4" of negative camber. A
total of 4" deflection from no load to full load.
Dave Russell
BN2
Dave Porter wrote:
>Bob,
> Camber is of course the way that the tire and wheel stand vertically, so
>I can't see how the spring would affect it at all. That would be controlled
>only by the axle housing. The only thing that I can see that the spring
>could control would be the angle of the pinion shaft relative to the
>horizontal. The spring could of course have a front and rear, as well as a
>top and bottom. I think someone isn't interpreting the book correctly. I
>would be interested in the responses as well. Then again, maybe I didn't
>understand the question ?? I'll pull the book off the shelf and read what
>Rodger was saying ASAIGAC
>Dave
>
>frogeye@porterscustom.com
>
>Porter Customs
>Albuquerque, NM USA 87107
>505-352-1378
>1954 BN2
>Porter Custom Bicycles
>www.britishcarforum.com/portercustoms.html
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