speedometers

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I am working on getting my instruments in shape for my 1930 Model A Pierce. I have two speedometers, one Waltham and one Northeast. I have a speedometer cable that fits the transmission on one end and the Waltham speedo on ussue the Northeast speedometer. I have seen other 1930 Model As with this speedometer. However, the cable doesn’t fit it.

Question 1: I am wondering whether both types were used in 1930 Model As, and what kind of adapter is needed to attach the cable to the Northeast speedometer.

Question 2: I have replaced the original ring and pinion, which was a 4.417 ratio, with a Phil Bray set, which is 3.83. Where can I get an adapter for the speedo cable that will make the speedo read correctly?

Thanks.

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Arnold: When I put the Phil Hill rear end in my ’31 I had the same situation. Phil Marshall owned a large truck terminal. Apparently they changed drive trains a lot. You need to find the adaptor that attaches to the cable, and then you adjust it as you go down the road. Mine came from some large truck repair place.

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Thanks, Tony.

Clark Brothers Instruments offers ratio boxes of a wide variety. I think one of theirs will meet my need.

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