Braking action too is mechanical and precise — Honda's regenerative braking works well, with
friction brakes not engaging under milder stops at speeds below 5 mph.
Not exact matches
But it's
not only the sheer stopping power that impresses, it's also how the car copes with split -
friction turf, hot
brake discs, and wet pavement.
When performing a very strong
braking from medium - to - high speed on good surface, chances are that the limiting factor is
not the ABS system nor the
friction with the tarmac, but
braking power.
Basic physical laws (e.g.
Friction = NormalForce * ConstantCoefficient), by the way, can
not describe correctly such a complex scenario as a great mass
braking on an uneven surface, with tyres deforming, car pitching on the nose, vibrations from the ABS kicking in.
This however does
not hold true for rear wheel drive vehicles which can have a strong weight transfer (high, soft - suspension cars, as most US vehicles), as the added
braking force on the rear wheels without added (weight - transfer caused)
friction could cause wheel lockup and possibly loss of control of the vehicle.
I had drum
brakes on my Land Rover (8», 10» single and twin leading shoe), and what you can try is to chamfer the leading edge of the
friction material - only needs 1/8» depth 60 degrees - so that the shoe does
not «grab» on first contact.
Note that it will
not spin completely freely as there is some
friction provided by the
brakes even when
not applied, but usually you can get at least one revolution.
The
brake system is
not related to tires, other than to provide
friction between the ground and the bike.
Rimac hasn't scrimped on the car's
friction braking system either — enormous 390 mm Brembo CCMR carbon - ceramic rotors fill each wheel rim, gripped by six - piston calipers all round.
Since the regen slows the car at a rate of about 0.2 g, you don't use the
friction brakes often in normal driving, but I finally gave the AP Racing
brakes a workout tearing down the back roads.
The Leaf's
braking response is smooth and predictable, and that's a big deal; in some alternative - fuel cars,
brake - pedal feel is half - baked, with the traditional
friction brakes and regenerative
braking system
not well - synchronized.
You're still confusing the two types of classical
friction due to the use of ABS: it's
not enough to say «sufficient
braking power to lock the wheels» as that would just be a skid.
Be careful
not to get grease on the discs
braking /
friction surface.
Regenerative
braking is
not by itself sufficient as the sole means of safely bringing a vehicle to a standstill, or slowing it as required, so it must be used in conjunction with another
braking system such as
friction - based
braking.
The low -
friction design of the
brake calipers reduces energy losses when the
brakes are
not in use, directly improving fuel efficiency.
Making extensive use of the regenerative
braking will
not only extend your range, but will also extend the life of the
friction brakes.
In milder stops, Honda says the
friction brakes may
not engage until 5 mph and below.
On very low
friction surfaces, the full 6ms - 2
braking may
not be achieved and the full benefit of Multi Collision Brake may
not be realised.
This includes but is
not limited to: ceiling and floor tiles, roofing shingles, heat, sound and electrical insulation, and
friction materials such as automobile
brake lining and transmission parts.