[mikey]

Just checking the set up as I bolted it straight on. Butterflies were !0 thou primary and zero secondary. Adjusted to 20 thou both primary and secondary so tickover and metering should improve.

The bog comes in at around 2500 to 3000 RPM which coincides approx with when the secondaries should be kicking in with the purple spring on a 415. Its a violent bog when accelerating hard and seems to last a long tine but i guess its about half a second(which seems an eternity) before it goes and acceleration comes in again.

In response to the question its a 750 vac secondary which should be OK with the 415 - I didnt want to overcarb and reduce airflow speed.

And hey guys thanks for any Advice given, I ve come to respect and value your replies over the times I have posted.

Can misadjusted secondary idle adjustment affect bog. I wouldn't have thought so, but I am sure the setting at all corners is not right yet.

Thanks again
Mike

By the way whats the weather like over there. Its actually a heat wave over here which if you have visited in the past you will come to realise is a rare occurance.