Simplex JUY 543
Author and images - Peter LowryThe
Juy 543 shown below is fitted to a 1954 Carlton
'Jewel'. It has two outer cables, one for tension,
as per the
Juy 51, and one for the gear change. Because there are two outer cables
there must be two cable stops on the chainstay. The
two inner cables are joined together by a pinch-nut and bolt just ahead
of the cable stops.
 Double chainstay stops essential
for this gear
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 Simplex down tube boss mounted
lever
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 Side view of 543 gear
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 View two of 543 showing nut to
adjust range of gears plus tension cable
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 Front rod changer Simplex
'Competition'
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