from open pipes to help those massive pistons sling spent gases out and chomp on fresh air. And it feels weird rolling around on a big custom that’s all bad-ass and attitude while remaining hamstrung by EU emissions regulations. The engine is smooth

at all!  In 1983 the 125 law, restricting riders on provisional licenses to 125cc machines, had already been introduced, as had the two-part test, but there was a glaring loophole in these new regulations that me and most of my mates jumped straight

go fastest, no matter what regulations you throw at them.Dorna, however, seems hell bent on a path of increasingly restrictive rule changes, all introduced with unseemly haste. Who can doubt there will be more? A curb electronics next? Then maybe

happened to the “two year’swarning” rule for technical changes?) via a moving target of regulations.They settled in a rush on a single engine, and equally quickly on Honda as the supplier – Yamaha had not offered enough horsepower, figuratively as well

." The vacuum controlled fuel injection system combines the 'analogue' response feeling of a carburettor with the 'digital' precision of fuel-injection. This system uses a free suction-driven valve piston to regulate air intake flow independently from electronic

-spec machine for Colin, as current regulations allow for Supersports-style tuning, rather than the anything-goes Superbike regs which the 750 fours run to.Cheaper to build, too, by about £50,000. This is important when you're a Scotsman and you're paying, even

single pumping out a euro regulation friendly 15bhp, with a balance shaft smoothing out any vibes. In fact, with 30db ear plugs in I wasn't sure if it was even running. The narrow roads leading from the test venue gave an illusion of greater speed

enough, but owners of the old Fazer 1000, and certainly those acquainted with the current R1's twistgrip, may wonder what's going on in the lower reaches of the rev range.Perhaps noise and emission regulations, along with a desire to rein in power

engine control maps, regulating the fuel injection, secondary throttle valve and ignition systems. The two maps are designated A and B, with Map A delivering full power and acceleration and Map B producing more moderate acceleration. The S-DMS system

and soulful configuration. Newer rivals tend to have more power and midrange but typically due to larger capacity.Regulator/rectifierThey fail on the VFR800Fi model. Exactly a third of these bikes in our survey needed a new one and they often kill the battery