Circe Cycles Morpheus Aurora 소유자 매뉴얼 - 페이지 5

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3.2 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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