Thursday, 26 November 2009


Not Alan Whicker's jet set, but that from an 18mm Kehin carb. Where to start ? Induction issues with the CB Special are well documented on these pages, and as part of the earlier attempts to get the creature to run properly a matching pair of carb refurb kits was ordered from the great David Silver Spares. The refurb kit includes a bundle of gaskets, o rings, float jet and needle, pilot jet, emulsion tube, main jet, jet needle, mixture screws etc etc - what it doesn't include is a needle jet for the jet needle to run in. What I have discovered is that the OEM Needle Jet Set from Honda (part no 16012-354-004) comprises both, crucial, matching parts - tolerances here are down to 1/100th mm so size matters. Needless to say the kit pictured above appears to be the only OEM part in the world and I need a pair !! I can think of a bunch of goodies that come in pairs and that's great but in the case of carbs for my project I'd be happier to run a single. In the same way that I really need two eyes to fully appreciate distance, scale, perspective and allow my brain to perform lightening quick calculations of on-coming vehicle speeds, my little twin needs two very clever, minutely detailed, perfectly machined, finely balanced, infinitely variable fuel metering and delivery instruments to enable it to run properly. It's not. MORE JET SETS !

1 comment:

Peter Ashley said...

Never mind about all that, tell us about the Capstan packet.

(Oh God sorry. That was so predictable.)