L
Finished building my first tricycle (tadpole) a few days ago. Never
ridden one before, in fact, I've never seen one other than on the
Internet. I've got most of the bugs worked out and have about 25 miles
on it so far. It's faster than my MTB and seems to climb better than
my "normal" LWB recumbent but so far I've been reluctant to go over
about 18 MPH. The reason being that it has very quick steering. It's
stable and straightens out if I let go of the steering bars with only a
small amount of oscillation about neutral. It may just be me not being
acclimated to a trike but I'm a bit scared of it at speed. After my
first tumble I've learned how to stay in the seat until the inside
front tire lifts Kind of like flying a hull on a Hobi.........
A few facts:
Wheel base 43in
Front track 32in
Center of gravity - The over all balance seems to be good.
Turning radius about 12 ft - Don't really need it that tight
Steering 2 bars direct to kingpin with neutral ackerman geometry
(I like the simplicity and ergonomics) Trail is around 20mm.
Wheel size(s) 20x2.125 front 26x2.1 rear
I don't really have any complaints about the steering geometry other
than a bit too much scrub radius, due to some poor jigging/measuring.
It's not all that much - about 15mm - and even with 100% asymmetrical
brake application is very controllable. Bump steer is noticeable but
not objectionable.
What I would like to know is, if this steering quickness and
sensitivity are normal for a trike and if not what might I do to reduce
the sensitivity?
2 obvious solutions are increased wheelbase and/or a steering mechanism
with reduced ratio. I really don't want to mess with the wheelbase as
I find the overall balance of weight front to rear to be very good the
way it is now. I also like the simplicity of the direct steering, but
I'll change whatever needs to be changed to feel comfortable at higher
speeds.
It's fun to ride the way it is but I was hoping for a practical
commuter vehicle. I'd really like to be comfortable/confidant at 45+
mph. Is this at all realistic?
================
Leon McAtee
I can't pedal 45mph but we have plenty of hills.........
ridden one before, in fact, I've never seen one other than on the
Internet. I've got most of the bugs worked out and have about 25 miles
on it so far. It's faster than my MTB and seems to climb better than
my "normal" LWB recumbent but so far I've been reluctant to go over
about 18 MPH. The reason being that it has very quick steering. It's
stable and straightens out if I let go of the steering bars with only a
small amount of oscillation about neutral. It may just be me not being
acclimated to a trike but I'm a bit scared of it at speed. After my
first tumble I've learned how to stay in the seat until the inside
front tire lifts Kind of like flying a hull on a Hobi.........
A few facts:
Wheel base 43in
Front track 32in
Center of gravity - The over all balance seems to be good.
Turning radius about 12 ft - Don't really need it that tight
Steering 2 bars direct to kingpin with neutral ackerman geometry
(I like the simplicity and ergonomics) Trail is around 20mm.
Wheel size(s) 20x2.125 front 26x2.1 rear
I don't really have any complaints about the steering geometry other
than a bit too much scrub radius, due to some poor jigging/measuring.
It's not all that much - about 15mm - and even with 100% asymmetrical
brake application is very controllable. Bump steer is noticeable but
not objectionable.
What I would like to know is, if this steering quickness and
sensitivity are normal for a trike and if not what might I do to reduce
the sensitivity?
2 obvious solutions are increased wheelbase and/or a steering mechanism
with reduced ratio. I really don't want to mess with the wheelbase as
I find the overall balance of weight front to rear to be very good the
way it is now. I also like the simplicity of the direct steering, but
I'll change whatever needs to be changed to feel comfortable at higher
speeds.
It's fun to ride the way it is but I was hoping for a practical
commuter vehicle. I'd really like to be comfortable/confidant at 45+
mph. Is this at all realistic?
================
Leon McAtee
I can't pedal 45mph but we have plenty of hills.........