Should you have any questions relating to the Vincent H.R.D. Owners Club, or Vincent H.R.D. motorcycles in general, please contact Graham Smith, Hon. Editor and Webmaster by calling 07977 001 025 or please CLICK HERE.
You are unrecognised, and therefore, only have VERY restricted access to the many features of this website.
If you have previously registered to use this forum, you should log in now. CLICK HERE.If you have never registered to use this website before, please CLICK HERE.
Every bike will be different, and it depends on so many factors.
I have bought a real time wide band fuel air meter to take the guess work out of it.
With the standard 276s on my Rap I am down to 140 main jets and the mixture is still rich.
I have checked several Vins and they are all way to rich.
And yes I do ride the bike hard and have done approx 1500 miles with those main jets in, that included thrashing around the IOM for a week.
The only way to do the job is either buy a meter or pay for dyno time.
Don't be tempted to buy other peoples set ups (I have heard of some people selling there results on to try an cover some of the cost) because as above every bike will be slightly different.
Remember most of the advice in the books is old now and the octane rating has changed, this will have an effect.