Adjusting the leg length
In order to check the adjustments have another person hold the bicycle while you are sitting on the recumbent.
Adjust the front boom in such a way that your leg is fully extended when your heel (wearing flat shoes) is in the foremost position on the pedal. Experience shows that the
While you are pedaling, the ball of your foot should be positioned over the center of the pedal axle.
It is important that your leg is not fully straightened when the crank is in the foremost posi- tion. If the distance is too great it is difficult to overcome this dead point, pedaling becomes uncomfortable and there is too much strain on the sinews of your feet and legs. If the distance is too short you may suffer from knee pain or your legs bump on the handlebar.
For riders with a short leg length the front boom has to be cut by a bicycle mechanic, so that it can be inserted to the maximum. It is important to trim the end of the tube neatly. The bare metal of the shortened tube end has to be protected against corrosion with a paint stick or wax spray.
The opening of the main frame is padded with a plastic paper sleeve that accomplishes the required clamping and protects the surface of the front boom.When the front boom has been completely removed take care not to damage the plastic paper adding while inserting it again.
Caution! The minimum insertion depth of the front boom into the main frame is 10 cm (4"). In no case may the end of the front boom be visible in the clamping slot when you look at the main frame from below, since it may result in a damage of the frame.
Adjust the front boon so that your knee will not be fully straightened when pedaling.
The rear end of the front boon must never be visible in the clamping slot.
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