Re: Standard heel rise?

IV wrote:
The only differences would be effeciency of stroke and how you move your
body. Neither of those is a change in gearing. Both affect your speed greatly.
For instance, sprinters throw their bodies around (using more power in each
stroke), but this makes the stroke less effecient. Higher speed, but at a
cost.

I think you don't understand the change in MA you can get with
different angles on an inclined plane, or rather you haven't understood
how it applies to skating.


What, the same thing on geared bikes and cars doesn't make sense?
Dan's case is that all else remains the same, in which case force
produced decreases as the gearing increases, this is appropriate for a
discussion like this in order to keep things simple.

Bikes and cars have differing mechanical advantages based on different gears.
You cannot just pop out your knee and use a new piece of equipment when skating.
You don't choose a mechanical advantage, and you don't have to worry about
changing torque to straight force.

You don't need a new piece of equipment, you simply change the MA by
changing the toe-out angle. That is to say you choose the amount of MA
appropriate for the situation.

You're right in thinking that more power is needed at higher speeds.
On skates, that is achieved through increases in the force of the push
and a higher gear (i.e. skates being less toe out during the push).
This is rather similar to what happens on a bicycle, go faster, you
change into a higher gear to stay at your optimal cadence, yet you
need
to push harder to maintain the higher speed (i.e. more power).

It is true that there are different types of strokes for different parts
of skating, but these are not gears. For the most part, there is a tradeoff
with efficiency that would not be seen if it were truly a gear system.

LOL, no-one is trying to say skates have cut gears. That would be
silly, instead here we're talking about gearing, or the ability to
select the amount of MA you need. There is always a loss of
efficiency, be it with a gearbox, chain and sprockets on a bike, or
your skates. I would think that skates have the least efficient
transfer of those systems.

.

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