Ulf,

The speedometer 2-speed adaptor is calibrated to match the same ratio as your Hi and Low gears. Your 1959 will have 9.04 Low and 6.50 Hi ratio gears, so in Hi range your speedometer cable will spins 29% slower than in Low range.

Mike B smile


Mike Boteler

1956 Chevy 3100 Resto Rod
1956 8400 Wrecker w/Holmes 525
1956 9200 Tractor w/Allison Automatic
1952 Willys M38 Army Jeep
1953 Willys M38A1 Fire Jeep
1978 Jeep CJ-5 Navy Jeep
1984 Jeep CJ7
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Hughesville, MD