Subject: Re: Effect of the Advance & Retard Lever
No it’s not that scary at all.
You will have gapped your magneto already, so all they will do is strobe your flywheel as you advance and retard the mag adjusting the Vernier couplings if required until you get the optimum performance (this might be at 44 degrees BTDC, 50 degrees, etc… etc…
What they are really ace at, is getting your carbs adjusted perfectly.
It’s a good experience and worth every penny (I think I paid £80.00 for just under an hour the last time I went, but I now get 80 BHP at around 4,200rpm & 22mpg instead of 16mpg)