09-11-2017, 08:10 PM
From various spec sheets I have, SU seem to have avoided the term dashpot. However other books apply it to just the oil filled damper fitted to late 30s and subsequent SUs. The main body has the construction of a dashpot but does not primarily function as one. The term is best avoided for carbs with solid guide rod and undamped pistons.
An attraction of the SU is that with most needles, part operating the start enrichment device richens the mixture in all situations. On other carbs with strangler chokes this convenient test is compromised.
I stumbled across a print of Jeffs original article, Feb 2014. The lack of identity numbers on the carb bodies complicates identitification.
An attraction of the SU is that with most needles, part operating the start enrichment device richens the mixture in all situations. On other carbs with strangler chokes this convenient test is compromised.
I stumbled across a print of Jeffs original article, Feb 2014. The lack of identity numbers on the carb bodies complicates identitification.