Circe Cycles Morpheus Aurora Manuel du propriétaire - Page 5
Parcourez en ligne ou téléchargez le pdf Manuel du propriétaire pour {nom_de_la_catégorie} Circe Cycles Morpheus Aurora. Circe Cycles Morpheus Aurora 10 pages.
Imprimer la page3.2 Saddle height
This dimension is very important for bio-mechanical efficiency and for protecting joints from injury. As a working rule, with
the pedal at the furthest position from saddle and the rider's heel on the pedal, the leg should be straight to very slightly bent.
This means that when the foot is in the correct position with the ball of the foot on the pedal axle, the knee will be slightly
bent at full extension. The degree of bend is personal, but it is important that, at full extension during the pedalling cycle, the
knee is neither overstretched nor too bent.
'!' Certainly for children we advise the use of adjustable crank shorteners, and anyone outside typical average leg lengths
should consider such shorteners or appropriate length cranks.
3.3 Saddle angle and position
Ideally the captain's saddle should be adjusted fore/aft so that the centre of the knee joint is vertically above the pedal axle.
The saddle top should be approximately horizontal, but care should be taken with the angle of the saddle, particularly so that
the nose does not obstruct forward rotation of the pelvis. The stoker seat can be adjusted for/aft using the two frame
mounting points, and can be adjusted for incline using the bolt on the captain's head tube. Leg extension can be further
adjusted by moving the front boom in and out.
3.4 Forward extension and bar adjustment
For comfortable riding, the amount of stretch of the back, torso and arms are crucial. An experienced rider should use the po-
sitions with which they are normally comfortable, but for first time riders, a good starting position should not be too stretched
or bent over. With familiarisation this position can be gradually adjusted. The stoker seat offers a very comfortable seating
position with the handle bars under the seat which acn be pivoted for a comfortable hand postition.
4.0 Controls and Riding Technique
Traditionally the front rider is known as the 'Captain' and the rear rider, the 'Stoker' . On the Morpheus this is reversed the front
rider is the Stoker and the rear the Captain. The Captain steers, has control of the brakes and gears and is responsible for sta-
bilising the tandem when starting and stopping. The Stoker pedals and should otherwise relax and not attempt to steer! For
some applications, the Stoker may have an auxilliary drag brake.
4.1 Starting and Stopping
At start, the Captain will mount the tandem, keeping it stable so that the Stoker can sit on the front seat with feet on pedals
ready to go. The Captain will then sit, and, keeping the tandem upright with one leg, will, with the stoker, start pedalling. It is
important to start in a low gear and for both riders to give a good hard push to get the tandem underway!
To stop, the Captain should warn the Stoker and then, as on a single bike, put one leg down to stabilize the bike. The Stoker
usually remains seated with feet on the pedals, but must keep still so as not to unbalance the tandem. If the tandem is at rest
for a longer period, one or both riders should be prepared to place both feet on the ground.
4.2 Brakes and Braking Technique
The Circe is fitted with excellent brakes that are able to stop the tandem quickly and safely. However, it is important to remem-
ber that a tandem is heavy and, consequently, with braking distances being greater than on a single, it is very important to be
aware of traffic conditions and not rely on last minute, panic braking.
In use, both brakes should be used, but the front brake is the much more effective brake and does the majority of the stop-
ping. Consequently, a lot of heat can be generated in the front wheel braking surfaces and, if long descents in mountainous
areas are anticipated, some form of auxilliary braking should be considered. If the tandem is fitted with disc brakes then rim
brakes can be added and vice versa if rim brakes are fitted. This enables the different braking surfaces to be alternated and any
heat build up to be controlled better.
4.3 Gear Usage
Your Circe is fitted with a good range of gears, each model having an appropriate gear range for its intended use. It is im-
portant to use the gears to find a cadence (leg spin speed) that is comfortable for both riders and, by being aware of road
conditions, to use the gears to try and keep within this range. Although mutual comfort is the most important requirement, a
cadence of 80-100 is generally considered to give a good bio-mechanical balance, though, obviously this may vary depending
on a variety of physical factors, both personal and terrain. The stoker chainset is on a freewheel to allow independent
pedalling.
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