will tell you something about the tricycle.
C21 has been developed from the succesful Newton tricycle
conversion. Unlike the conversion however, the C21
uses a purpose-built tricycle frame, which has been designed
to meet a variety of uses. The frame is mostly built
from Reynolds or Columbus tube, and construction is by
bronze welding. The absence of the traditional top
tube makes the machine easier to mount, which is especially
important to those with partial disability, while the use of
a specially modified large-bore tube gives ample
rigidity. The C21 shares with the Newton conversion
the "Tadpole" Kendrick-style layout with centre rear wheel
drive, which allows the use of almost any conventional
bicycle gear set and gives unrivalled traction as the
rider's weight is directly over the driven wheel. It
also has the same steering arrangement which gives excellent
stability and good handling.
The C21 can be built in a variety of frame sizes - both
length and height can be varied to suit your
preference. The frame is made with a fixed seat tube
and head tube angles of around 72° - the head tube
isn't, in fact, a head tube but it's in the same place as a
bicycle head tube would be from the rider's viewpoint.
Equipment can be specified for various cycling activities,
the one shown above is a fairly small frame set up as a
light touring machine. The frame is obviously heavier
than a bicycle, but the overall weight is not excessive with
lightweight wheels, tyres and equipment. The machine
can be specified with almost any normal cycle
equipment. Standard front brakes are mechanical discs
on Hope hubs, which are fitted with our own design of 20mm
quick-release axles; this makes it much easier to get the
machine into a car.
Prices depend very much on equipment specified, but
start at about UK£2000 for a good but not too
expensive setup, using mostly mid-range equipment. We
don't see the point in having a custom-built frame and
fitting cheap parts to it! Specifying a
top-of-the-range groupset can easily add another
UK£1000 to the price.
There are two fixed prices:
a) Complete C21 frame, painted and with front hubs, steering
gear and brakes: UK£1600.
b) Complete C21 frame, painted and with finished front
wheels (with tyres) : UK£1700
The design of the C21 has recently been extended to make a
tandem version. We've not really decided what this is
called - The C21 started out as "a new tricycle for the 21st
century", and the name stuck. In any case, the tandem
shares its basic frame design with the C21 although it is
obviously stronger, heavier and has an extra seat!
Using the same layout and geometry as the Newton tandem
conversion, is has unrivalled stability compared with a
"conventional" tandem trike, while the advantages of
traction and drive remain the same. The picture below
shows such a tandem: this one is a small frame fitted with
ATB size wheels, which makes the machine lower and improves
stability even more.
The principal visual difference is that the tandem comes
equipped as standard with front mudguards. These are
not normally necessary on a solo, but on the tandem, the
front wheels tend to splash the stoker, which is obviously
unpopular. The tandem like the solo C21 is fitted as
standard with twin front disc brakes and as with the C21,
can be supplied with a wide variety of equipment. As
above I have 2 fixed prices, these are UK£1900 for the
tandem with hubs and brakes only and UK£2000 for one
with complete front wheels. Guide price for a fully
built tandem is UK£2500 upwards.
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