[BEB]

I tried a Barry Grant Speed Demon 650 vac. sec. but it suffered from a bog/stumble when the secondaries were opening. I tried every different spring with particular emphasis on the heavy, slow, black springs to slow the opening of the secondaries until later, but it still bogged. I even had it set up on a chassis dyno.

Going back to my old 750 Street Avenger immediately cured that but the problem I now have (as described in my first post) is still there.

I think I shall try playing with the accelerator pump system and check it is working immediately instead having a slight delay.

Any views?