Hey Greybeard...then you'll be happy to know that Jenks is or was testing new Amals on his Bonnie.
From the NTBF...
Quote:
8928.1
A New Bonneville ran today with a pair of 36mm Amal Mk2 Concentric carburettors – and it was GOOD. With a pair of carbs out of the box, fitted with 300 main jets, 25 pilots and a No 3 cutaway slide the bike started first turn and I rode 25 miles on the first test run:
How was it?
Well, the good news is that between 3000 and 5000 revs the bike pulls like a train and the throttle response is instant – more like FI than CV carbs: really impressive. I couldn’t go above 5000 because the first set of cables made have too much slack in them so the carbs do not open fully. Also, the carbs need setting up to give a better idle and even tickover: clearly more work to be done. The next stage is to get a bike fitted with the carbs up to the dynamometer to see just what can be achieved with a good set up.
The installation is neat, looks good and uses the stock airbox and inlet manifold rubbers. We plan to offer a bolt on kit, complete with cables and all jets needed for the most common Bonneville and Thruxton exhausts.
More news as it develops: but the first step has been taken!
Peter
