can anyone confirm that the cam barrel Challenger box can be altered to one up or one down operation by moving how he barrel is fitted?
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Most challengers are 1 up although I had an MX2 in 1978 that was to American spec (1 down).
My 24MX4 Challenger albion boxes (1968) are both 1 up,
but I'm thinking of converting them both to 1 down if I can find another reverse cam barel as i have the 2 indent shafts required and 1 reverse cam barrel already. My understanding is you need to change the indent shaft and Cam barrel but I'm the least technical person here, so I'd give both gearboxes to Geoff Nunn (the gearbox whisperer) to do his magic.
(see image)Last edited by John macleod; 22/05/2021, 07:36 PM.
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