In rec.aviation.owning Del Rawlins wrote:
In wrote:

What is the one statement that is ALWAYS true about dual SU carbs?
They are out of sync.

You are speaking for yourself here. Once properly set, they typically
stay that way until the next idiot decides to screw with them in an
attempt to fix some problem caused by the Lucas ignition.

Not quite...

I still remember the picture quiz in one of the car mags that showed a
pair of SUs with the question "What are these?", the correct answer
being "Out of sync".

Other than cleaning the points and plugs at 3k and replacing them at
6k, I never had any problems with the ignition systems. Of course this
was before gold or platinum plugs became available.

I especially loved the carb on the Triumph. It didn't take long to learn
to keep a spare diaphram and a screwdriver in the trunk for when the
damn thing cracked and started leaking air limiting your max speed to
about 15MPH. Armoralling them seemed to make them last a bit longer.

--
Jim Pennino, spender of way too may Sundays sitting on the tyres of
British road oilers

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