>It should be noted that the overdrive unit number for Laycock De
>Normanville D-Type, which consists of three sets of figures seperated by
>oblique strokes, is made up as follows:
>     First number:  Percentage change of drive ratio, e. g. 32% or 25%.
>     Second Number: Type Designation
>     Third Number:  Serial number.
>I think all Alpine OD's were 25%.   Is this true?  My Late 50's Singer 
>book lists a 32% OD.  Does anyone know of any other OD ratios?
>Thanx.  Tom
***** NOTES from Jay Laifman (JLAIFMAN (at) PNM) at 12/6/96 11:41a
I just so happen to have my numbers handy:
"25/63314/050946 J"
There's 25% for you.  The "J" was stamped later by John Roseby, which he 
does whenever he rebuilds a trans/od.
Jay Laifman
Pircher, Nichols & Meeks
Los Angeles
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