Hitchcocks Forum

My 350 classic has just been rebuilt with a goldie silencer. It has a 26mm Amal breathing through a conical filter. Perhaps surprisingly, even with the needle on the top notch, it is running rich with the plug getting sooty(not oily). I can tinker with the jetting some more, but I was thinking of taking the baffle out of the Goldie, and perhaps refitting a bellmouth (though I don't think that makes much difference).
I'll experiment, but how much difference does anyone think the baffle will make in terms of mixture and noise?

Sorry, thought it hadn't posted previously.

Hello John,
My bike had a conical S&B filter with a Hitchcocks 50's style exhaust/silencer. When I put a more restrictive silencer on and added a tea caddy style air filter I found that it the mixture was far too rich (thanks for everyone's help here). My Amal carb was fitted with a 200 jet. I ordered a 180 so I hope this will help. I'll let you know.
regards,
Alan