To ensure 12+V to the Boyer I have bought a electronic box that takes 5V to 30V in and puts out 13V (or whatever you set it to between 6V and 28V) with 8A max current draw. So it's both a step up and step down voltage stabiliser. So it not only stops kickbacks but protects the boyer if the regulator fails and the volts go too high.
I looked at the online reviews for the one I bought, its says max 8 amps but to achieve that you need to be up close to max volts, but the reviews confirm that at 12V it will pump out enough amps for a Boyer.
Cliffs, your first link looks to be good, but the second is limited to 3A which is not enough.
Rear brake safety spring
Rear sets
mud flaps
and JD Cornhead grease.
I am glad I bought tires, brakes and cables.
Mike, I'm sure you'd get far more grip with Tyres![]()