Quote:

What is the size of the engines in these dyno runs? Particularly the ‘PERFECT DYNO’.



I run an '05 Speedmaster with the 865 cc engine, built in December of '04. The 'perfect' designation caused some extended audible discontentment in that if mine has such low horsepower compared to others, why was mine considered perfect? That was only a word the dyno tech used because I hit the Dyno Jet brand software's suggested air to fuel number, which I believe was 13.6 : 1?

There are many ways to tune, and my way may be exactly wrong for someone else. I question the word 'perfect', but again, it didn't come from me, nor did I write it on the results print out. ;-) For what it's worth, and perhaps to the dismay of some, I figured I have enough headroom to lean it out just a little bit more, so I detuned the engine a bit farther after the dyno run, so as to increase fuel efficiency. It suits the way I tend to ride most of the time, which is to get from point A to point B & back. I don't seem to miss the 1 or 2 horsepower or little bit-a torque twist I may have lopped off in detuning. I get a very consistent 50 US MPG on a 10% gasohol blend, which with my currently limited finances, works for me.

On the other side of the coin, If Santa were to drop 6 or 8 bags of cash down the chimbley, I'd love to take one of these twins and do a turbo campaign, cams, racing rods & pistons, bore & stroke, maybe even accomplish the unlikely of variable valves, EFI with a thumbwhweel on the left handle bar to adjust the map on the fly, and maybe even a little old tiny bottle of laughing gas, and a very big box of head gaskets. I would eventually be known around town as "Some old guy on a Triumph who went by me on the back wheel doin' a buck 20."