Retrospec BEAUMONT, Руководство пользователя

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User’s Manual Electric Bike
Step 7: Derailleur Gears Maintenance and Adjustment
The gears/derailleur(s) on your bicycle should be correctly adjusted from the factory.
However, as cables do seat and stretch. It is important to check the function of your
shifting after your first ride. It is not unusual for your shifting system to need some
adjustment after being used a few times.
We strongly recommend you have your e-bike serviced by your dealer or professional
bike shop/mechanic.
To ensure long life and efficiency for your drivetrain system, it must be kept clean and
properly lubricated. Before attempting any adjustments, make sure you understand the
drivetrain components functions and feel confident to attempt such maintenance.
• Left shifter controls the front derailleur and chain wheel(s); Right shifter controls
the rear derailleur and rear cogset.
• The largest/larger rear sprockets on the cogset are the low [speed] gears used for
hill climbing and low speed technical riding; the smallest/smaller rear cogs are for
cruising and high(er) speed and downhill riding.
• For maximum efficiency, best riding experience, and long life, avoid using
“crossover” gears, for example: the large front chainring with the large rear cog,
OR or the small front chainring with small rear cog.
NOTE: For good shifting and riding experience, follow these 4 actions:
1) Shift only when pedaling (forward), do not shift when stopped.
2) Do not use hard, aggressive pedal pressure while changing gears.
3) Never back pedal when changing gears.
4) Never force the gear shifting levers.
Rear Derailleur Adjustment:
There are two limit adjustment screws on the rear derailleur - High/”H” and Low “L”.
Looking from the rear of the bike forward, the limit adjustments center the chain on
the high/large and low/small rear cogs which prevents the chain from going over the
large cog and into the wheel/left (the “H” or high adjustment screw) or into the frame/
right (the “L” or low adjustment screw).
First, the derailleur cable tension needs to be correct:
Position the shifter(s) so the chain is on the smallest rear cog and largest front sprocket
- check for cable slack at point “B” (Refer to Fig. 20) . If there is slack, loosen the cable
nut or hex bolt, pull the cable with pliers and retighten the cable nut/bolt while pulling
cable taut (tightening torque: 5-7N.m or 4-5 lbs)
High/Large Cog (“H”) Limit Adjustment
Turn the “high limit” adjust screw marked “H” on the rear derailleur so that, again
looking from the rear, the upper guide pulley is below the vertical plane of the center
of the top/large cog.
Low/Small Rear Cog (“L”) Limit Adjustment
Turn the “low limit” adjust screw marked “L” on the rear derailleur so that, again
looking from the rear, the upper guide pulley is below the vertical plane of the center
of the low/small cog.
1) Operate the shift lever to shift the chain from top gear to 2nd gear.
• If the chain will not move to the 2nd gear, turn the cable adjusting barrel on the
rear derailleur to increase the tension (counterclockwise)
• If the chain moves past the 2nd gear, decrease the tension (clockwise)
2) Next, with the chain on the 2nd gear, increase the inner cable tension while turning
the crank forward. Stop turning the cable adjusting barrel just before the chain make
noise against the 3rd gear. This completes the adjustment.
Make sure the drivetrain is clean. We suggest “dry” lubricants for most applications.
Step 8: Check Before Riding
Make sure the wheels are tight and secure. Tighten the front and rear hubs nuts
securely. (Tighten torque: about 30N.m for front wheel, about 25 ot 30 N.m for rear
wheel).
For Quick-Release (QR) hubs/axles, make sure the QR levers are in the locked/closed
position. Before riding, lift the front of the bicycle so that the front wheel is off the
ground, lightly bounce it to the ground and give the top of the tire a few downward
strikes. The wheel should not wobble or come off and there should be no rattling. Do
the same for the rear wheel.
Small Front Sprocket
Large Front Sprocket
(Front Derailleur)
Chain Guard
Spoke Protector
Smallest Rear Sprocket
Point “B”
Tension Roller
Sprocket Cluster
Largest Sprocket
Cable
Chain Line
Chain
Pulleys
Largest Rear Sprocket
(Rear Derailleur)
Fig. 18 Check for Cable Slack
13 14
Fig. 20