Extralite HyperBoost3 R Owner's Manual

H y p e r B o o s t 3 R
Destination Cross country, Enduro.

Guideline

Periodically clean hub internals (every 6-12 months in normal and dry conditions, every 3 months in wet conditions and always before
leaving the wheel un-used for more than 1 month) see Level1 instructions next page.
Never use high-pressure spray washing directly on hubs. Clean hubs externally with warm water and soap.
W ARNINg Avoid the following errors that will seriously damage the hub internal parts (immediately or in a very short time):
- Too much greasing.
- Uncorrect positioning of grease.
- Wrong grease type (Lithium grease is the most dangerous).
- Micro Tuner way off its correct range (this increases also the clearance between engagement teeth)
- Never couple new engagement parts in contact with worn-out ones.
Once engagement teeth got damaged by a slow / un-free movement of the Floating Ring there is no other way than replace the entire
Freewheel assembly.

Bearing preload set-up:

Optimal bearing preload is important for a long bearing life. Incorrect bearing preload can damage bearings and freewheel parts
additionally decreases hub performance.
Micro Tuner comes pre-adjusted from the factory. Do not modify its position if not necessary.
W arning
- Riding with a too-tight Micro-Tuner reduce bearing life and performance.
- Riding with a loosen Micro-Tuner may causes an uncomplete freewheel engagement and damages mechanism permanently.

Checking

Before modifying bearing preload carefully check the
complete wheel as follows:
1) Gently push Axle from right side using a plastic mallet.
2) Install wheel into dropouts and normally lock skewer.
3) Check there is no play at rim diameter.
4) Leave wheel free to completely stop spinning and carefully
control latest instants of movement. Stopping should be very
smooth.
Micro Tuner:
21mm wrench.
Ø 50

Lacing

Respect specific lacing pattern (see drawing).
See www.extralite.com to find pre-calculated spoke lengths.
Make sure hub is properly assembled and adjusted before lacing.
Hub maximum spoke tension:
Drive Side: 130 Kgf
Left Side: consequently
In any case never exceed the maximum tension recommended
by rim manufacturer.
Do not laterally over-push Axle at the spoke stretching procedure.
Excessive lateral load may damage external bearings.
Secure rotor bolts with mild
threadlock (Loctite 243)
6Nm
Ø 2.75
148
Center line
36
Owner's manual

Preload Tuning

If necessary fine tune as follows.
1) Gently push Axle from right side using a plastic mallet.
2) Install wheel into dropouts and normally lock skewer.
3) If you feel play at the rim turn in Micro Tuner (clockwise). Use a
21mm wrench, very delicate torque and manners.
4) Unscrew Micro Tuner for ca 1/4 of turn to release excessive preload
on bearing balls and achieve max rolling smoothness.
5) Repeat Preload Checking and eventually slightly correct it.
6) The optimal bearing preload cancels play at the rim without
affecting rolling smoothness.
Ø 48
25
24H
Lock Ring maximum torque:
Shimano 10/M11s --> 25Nm
Shima 12s compatible --> 12 Nm
Use only Extralite S12 Lock-Ring
Never use original Shimano Lock-Ring
28H