Monday, August 18, 2008

ontario law on power-assist mopeds

(above pic of Revopower internals... if only they'd make a for-sale product, LOL!)

A limited-speed motorcycle is:

  1. a motorcycle that:
    1. can attain a rate of speed of more than 32 km/hr on level ground within a distance of 1.6 kilometres from a standing start;
    2. has a maximum attainable speed of 70 km/h or less;
    3. has steering handlebars that are completely constrained from rotating in relation to the axle of only one wheel in contact with the ground;
    4. has a minimum seat height, when the vehicle is unladen, of 650 millimetres;
    5. has a minimum wheel rim diameter of 250 millimetres and a minimum wheelbase of 1016 millimetres;
    6. has a maximum engine displacement of 50 cubic centimetres or less; or,

A motor-assisted bicycle is a bicycle that:

  • is fitted with pedals that are operable at all times to propel the bicycle;
  • weighs not more than 55 kilograms;
  • has no hand or foot operated clutch or gearbox driven by the motor and transferring power to the driven wheel;
  • has a piston displacement of not more that 50 cubic centimetres; and,
  • does not attain a speed greater than 50 km/h on level ground within a distance of 2 km from a standing start.
D: I guess the 32 kph rule must be common - Revopower hit the legal nail right on the head.
It is half the price of competing electrics.

There is whole lotta legalese here. Read the rest over if you want.

Most power assists seem to think I'm decrepit. They're substitutes, not 'assists'.
Guess what? On a half-dead steel frame mountain bike junker, for an HOUR, I can already sustain 32kph on pavement.
At first, I wondered what math was wrong.
I mean, I KNOW I am not generating anything near a full horsepower.
Yet the Revopower needs to, to go 30kph.
So what gives?
Heat loss inefficiencies.
A typical combustion motor only manages to deliver a few 10s of percents of initial power to the wheel.
Ergo, all is well in math-land.
I am just dang efficient that I might as well be a full horsepower.
Likely more like half a horse though. <: <: Tee hee.

No comments: