Liste des Groupes | Revenir à rb tech |
Am 25.09.2024 um 14:46 schrieb Catrike Ryder:On Wed, 25 Sep 2024 10:57:52 GMT, Roger Merriman <roger@sarlet.com>>
wrote:
Catrike Ryder <Soloman@old.bikers.org> wrote:>A few weeks ago, after posting about braking, I tested the Catrike's>
brakes at 15 MPH. I stopped at about 6 feet, keeping the chain rings
off the ground.
Thats really hard to see how, youve mentioned that the trike pitches
which suggests that its weight is quite forward.
Indeed it does pitch forward. It's easy to lift the rear tire off the
road, however, the center of gravity of me on the Catrike compared to
someone on a two wheeler is much lower. LIfting the rear wheel of the
ground still requires a lot of braking force.
Pitching forward is a clear indicator that for your Cattrike (like for
most upright bike but unlike some recumben bicycles) , the limiting
factor for braking performance is the geometry rather than tires or brakes.
>I run Magic Marys at 2.40 they are soft and gummy tires and on tarmac they
are effectively glued to it! Even with that 6ft at 15MPH seems ambitious!
I use road tires, of course. 40MM at 70/80 psi. I suspect my tires are
glued to the road better than your knobby MTB tires.
Irrelevant; as long as the front tire(s) don't lock and slip, it's all
the geometry.
>
IIRC, some realistic numbers are:
road bike: 0.6g
MTB (bum behind saddle): 0.7g
>
standard car: 1.0 g
race car: 1.2 g
(spoilers to increase pressure, special tire s etc)
>
I'm speculating
Cattrike 0.9g
>
>
Les messages affichés proviennent d'usenet.