Braking
Method
Determined
By Speed
We
have all heard that 'up to 70% of your stopping power comes from the
front brake.' Not desiring to start another war, but it is my opinion
that this is historic information - up to 100% of your stopping power
comes from your front brake now!
With today's modern brakes and tire compounds it is entirely possible,
with speed and good road surfaces, to get so much stopping power with
the front brake that you can break your rear wheel entirely off the
ground (known as a 'stoppie'). [This is not good. <g> Not to
worry, in a later article I will demonstrate that it is virtually
impossible to do a 'stoppie' with a GoldWing.] But raising the rear
wheel off the ground at high speeds is not the typical problem with
over-applying your front brake - it is locking the front wheel and
dumping the bike at slow speeds.
So?
Well, traditional training argues that for most effective braking you
should try to obtain about 75% of your stopping from the front and 25%
from the rear if the road is dry, and 50% from the front and 50% from
the rear if the road is wet. This might no longer be the best advice
because speed is not being considered.
That
is, in my opinion, the advice should better focus on what you should
do at various speeds. For example, if you are moving at less than
about 20 MPH, regardless of the condition of the road surface,
virtually all of your stopping can be derived from the
rear brake, and if the road surface demands it (slippery, grass, loose
gravel, etc.) exclusively. [I advocate using BOTH brakes
virtually every time - I am here only arguing that you can
rely on the rear brake for most of your stopping at slow speeds - not
that you should only use your rear brake.] The slower you go, the more
likely your front brakes will grab - thus, you should not be trying to
get 75%, or more, of your stopping power from the front brake at slow
speeds. (We have already talked about how fast a bike goes down if the
front brake locks.)
When
moving faster than 20 MPH then traditional advice (75%/25% or 50%/50%)
applies depending on road surface condition, paying particular
attention to NEVER applying brakes so quickly that you lock either of
them, and that during hard braking you should tend to ease up on the
rear brake as weight shifts towards the front wheel.
The
next Tip argues this far more clearly, and suggests 75%/25% should now
be more like 85%/15%. More importantly, it describes 'Taper Braking'
as a method to be used at all times. I fully endorse that thinking.
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