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It is extremely important to the performance,
enjoyment and safety of Lafree and yourself
to understand how many of the features of
Lafree operate. You should not assume that
the way things have worked on previously
owned bicycles operate similarly on Lafree,
even if you’re an experienced bicyclist. Be
sure to read - and to understand - this section
of the owner’s manual. If you have even the
slightest doubt about how any of the
mechanical features of Lafree operate, talk to
your authorised Lafree dealer.

7.1 Variable Power Control

(VPC Throttle)

Lafree’s Variable Power Control (VPC) Throttle
gives you instant access to the motor’s power
for going up hill or into a headwind, or if you
simply don’t want to use any of your own
power! You control the amount of power output
simply by twisting the right VPC Throttle.
Twisting the VPC Throttle in a
counterclockwise direction against the grip’s
spring tension (rearward) applies power from
the electric motor, while releasing the grip in a
clockwise direction (forward) decreases power
from the electric motor (fig. 7A).

The ignition-lockset and safety switch must be

ON. Lafree requires pedal input for motor
output. This means that under any pedal
exertion, Lafree will respond with electrical
assistance. You can control the amount of
power output simply by twisting the VPC
Throttle, which is located on the right side of
the handlebars.

When your speed reaches or exceeds 25 km/h,
Lafree’s motor will automatically disengage and
stop assisting until the speed drops below 25
km/h. You must pedal to enable the motor to
engage VPC Throttle. If you stop pedalling
while VPC Throttle is in the ON (twisted
counterclockwise) position, motor assist will
cease until pedals begin turning again. The
throttle must also be twisted completely
clockwise (no power) then twisted counter
clockwise again for VPC Throttle to engage.

For safety, do not pedal Lafree while the bike
is leaned over in a turn and VPC Throttle
engaged, as the pedal may come in contact
with the ground or other elevated obstacle. It
is best to put the pedals parallel to the ground
at nine and three o’clock, or with the inside
pedal (side the bike is leaning toward) at 12
o’clock and the outside pedal at six o’clock.

WARNING: For safety, do not pedal
Lafree while the bike is leaned over in
a turn and VPC Throttle engaged, as
the pedal may come in contact with the
ground or other obstacles and cause
you to lose control and fall.

CAUTION: Using VPC Throttle exclusively
drains energy more quickly. Use VPC Throttle
sparingly for optimum energy range and
consumption.

7.2 Power Assisted Pedal

Lafree’s power assisted pedal system utilises
a fuzzy logic CPU (central process unit) to
provide constantly monitored power
assistance based on speed and pedal force. 

7

HOW THINGS WORK

FIGURE 7A

0288 Opm Binnenwerk  11-02-2000  10:46  Pagina 18

Summary of Contents for giant

Page 1: ...any of the most advanced developments in bicycle design and manufacturing technology For further Lafree information see page 2 Now with the introduction of the Lafree electric bike Giant has given tra...

Page 2: ...18 7 1 Variable Power control VPC Throttle 18 7 2 Power Assisted Pedal 18 7 3 Energy set Ignition 19 7 3 1 The ignition switch 19 7 3 2 The safety switch 19 7 4 Self Diagnostic Check 19 7 5 Light Emit...

Page 3: ...nents or the entire bicycle Even though Lafree functions as a standard bicycle you should still review the chapters on bicycle operation especially if you haven t ridden owned a bicycle within the las...

Page 4: ...17 hub 18 quick release cam lever 19 bottom bracket inside motor housing 20 crank arm 21 chainring inside motor housing 22 drive chain 23 pedal 24 rear derailleur 25 freehub gearhub 26 seatpost 27 sa...

Page 5: ...rge level indicator lights 2 2 Control centre handlebar 1 Variable Power Control twist throttle 2 Variable Power Control cable 3 grip 4 rear derailleur gear shifter Grip Shift 5 shifter cable 6 shifte...

Page 6: ...u control the amount of power output simply by twisting the VPC Throttle 3 1 Frequently Asked Questions FAQ s Q Do I need any special skills or licenses to ride Lafree A Special permits or licensing m...

Page 7: ...Q What happens when the Energy Set becomes depleted A When the energy level in Lafree s battery reaches one percent of maximum capacity the battery needs to be re charged Simply plug Lafree s power c...

Page 8: ...Check the adjustment as described above Under no circumstances should the seat post protrude from the frame beyond its Minimum Insertion or Maximum Extension mark Fig 4C 8 4 BIKE SIZING AND SAFETY FI...

Page 9: ...d cause you to lose control and fall 9 Handlebar position can be adjusted as follows 4 1 3 2 Handlebar stem height There is no general rule for the height of the handle bar For a more sportive riding...

Page 10: ...o place when ignition is at ON position Self Diagnostic Sequence Automatically checks that VPC Throttle Brake Actuated Motor Shut off and the torque sensor are functioning Safety switch disables the m...

Page 11: ...brakes Fig 4E 4F and with disc brakes Visually inspect for proper cable routing Squeeze the brake levers Brake levers should engage hoes rear roller brake at approximately half way through their arc o...

Page 12: ...4 3 6 Handlebar and saddle alignment Are the saddle and handlebar stem correctly in line with the bike s top tube and tight enough so that you can t twist them out of alignment 4 3 7 Handlebar ends Ar...

Page 13: ...ing the front suspension compresses and the front end may drop noticeably You could lose control and fall if your riding skills are not sufficient to negotiate this mechanical function of the suspensi...

Page 14: ...not touch battery while charging is taking place as battery can reach temperature of up to 50 degrees Celsius Lift the Energy Set s charging cord cover grasp the plug and pull to extend cord If the c...

Page 15: ...2 Storage Transportation 6 2 1 Removing Charging and Storing Energy Set Lafree s Energy Set can be removed from the bicycle for easier charging and storage When removing carrying and storing the Energ...

Page 16: ...y after three months If you have stored the Energy Set for longer than two months without charging discharge and recharge the battery Please repeat this every two months In case you forgot to discharg...

Page 17: ...ned with water only Do not use solvents or cleaning solutions of any kind Do not attempt to open Energy Set s battery case or charging unit There are no user serviceable parts in the Energy Set If you...

Page 18: ...mply by twisting the VPC Throttle which is located on the right side of the handlebars When your speed reaches or exceeds 25 km h Lafree s motor will automatically disengage and stop assisting until t...

Page 19: ...tomatically locked into the Energy Set compartment when ignition is in the ON position OFF Lafree s electronic features will not function The Energy Set is locked into the Energy Set compartment and t...

Page 20: ...inate depending on how much pressure torque is being applied CAUTION If any of these features fail the diagnostic check take your Lafree to an authorised Lafree dealer immediately Operating Lafree wit...

Page 21: ...ED1 will flash 7 7 Front Wheel Quick Release Lever Cam WARNING Riding with an improperly adjusted wheel quick release can allow the wheel to wobble or disengage from the bicycle which may cause damage...

Page 22: ...er these tabs are not designed to keep the wheel in place should the quick release lever open accidentally If you hear or feel looseness coming from the front wheel stop riding immediately and check t...

Page 23: ...heel firmly to the top of the slots in the fork dropouts and at the same time centring the wheel rim in the fork rotate the quick release lever upwards and push it into the CLOSE position Fig 7G To do...

Page 24: ...s 1 2mm Some models are equipped with internal gear hub Removing and installing the rear wheel with internal gear hub requires special tools Consult your dealer 7 8 Seat Post Quick Release Lafree is e...

Page 25: ...rating while the brakes are applied take it to your authorised Lafree dealer immediately for service WARNING Always run the Self Diagnostic test before every ride to ensure Brake Actuated Motor Shut O...

Page 26: ...gear disengage VPC Throttle by rotating the throttle forward clockwise and resuming power assisted pedal by putting manual power to the pedals Whenever shifting gears shift early before pedal pressure...

Page 27: ...take your Lafree to an authorised Lafree dealer for inspection 7 13 Rear fork lock Operating the rear fork lock mechanism Fig 7K Push the lock pin slightly in the direction of the pin Now rotate the p...

Page 28: ...ss of which option you select we recommend that the first time you work on something on your bike ask your dealer to check the quality of your work before you attempt to ride the bike There may be a s...

Page 29: ...ice any of these problems or if your brakes and or shifter are not functioning smoothly ask your dealer to check and replace the cables and or wires if necessary Squeeze spokes in adjoining pairs on e...

Page 30: ...0 3 Stem inclination bolt 20 30 4 Crank arm bolt 40 55 5 Wheel axle bolts front and rear 35 50 6 Brake lever bolts 6 10 7 Saddle retention bolt front 8 12 8 Saddle retention bolt rear 15 18 NOTE The s...

Page 31: ...e of plastic milk carton etc Either patch the tube follow the instructions in your patch kit or use a new innertube It is always a good idea to have a new innertube as well as a patch kit in case the...

Page 32: ...rning the brake cable adjusting barrel s clockwise to slacken the cable and open up the brakes see Section 4 3 4 If the wheel still won t turn open the brake s quick release see Section 7 7 and secure...

Page 33: ...r construction defects for a period of 1 year 6 The original parts of other manufacturers applied to the Lafree bicycle will be guaranteed by Lafree according to the terms and conditions of the manufa...

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