Wheelsets/Hubs Tips

 

Does this wheelset fit a rider of my weight?
All our products exceed Uni/Din safety standard requirements.
As a general rule just realize that Uni/Din safety standards and tests consider a 90kg. (200Lb.) extremely strong athlete's effort as reference.

Are you that strong?
If yes plan to replace your frame/component after a whole racing season since you can have partially fatigued it.
An average good racer outputs 20% lower loads and this will double the component fatigue life.
The loads applied by an average rider affect only marginally the fatigue life of the component.

Additionally you can surely understand why the rider weight plays only a minor role in the energy q.ty count that can be applied to the bike parts:
1) Speed itself increases by the square of the loads applied to the front wheel when hitting an obstacle. Therefore speed, terrain and the correct pressure of the front tire are the critical factors.
2) Personal riding and sprinting style can put very limited or extremely high loads on the rear wheel’s spoke-rim structure. Key factors are bike/rider lateral angle under sprint, leg impulsive force and gear ratio.
3) Low gear ratios increase chain pull and this directly increases the mechanical stress on hub freewheel, hub bearings, crank bearings etc. (especially on MTB bikes)

About Carbon Fiber Road Rims
Always remember that carbon fiber rims are typically sensitive to impacts.
Carbon fiber rims offer a very high stiffness/weight ratio but can't absorb impacts and don’t tolerate deformation or bending as well as alloy rims.
Therefore, despite the extremely careful engineering, all road wheels equipped with lightweigh carbon fiber rims should be used only on well-paved roads.
Brake shoes should be carbon friendly and the surface of rim sidewalls should be periodically cleaned/degreased with acetone in order to mantain good braking performance and reduce rim wear.

About Carbon Fiber MTB Rims
MTB Carbon fiber rims are typically over-dimensioned for X-C use since the material is very sensitive to impacts (such as when the fibers get in direct contact with a stone).
Carbon fiber rims offer very high stiffness/weight ratio but can't absorb impacts nor get deformed or bent as alloy rims.
Therefore, despite the extremely careful engineering, the suspension setup and the cyclist's handling ability are the most relevant factors in carbon fiber rim durability.


Can I service UltraHubs/Wheels?
UltraHubs are fully serviceable, however we divided hub maintenance into 3 levels of technical know how:
Level 1: Freewheel cleaning/oiling. While no special tools are required, we recommend it only to technically skilled owners and mechanics.
Level 2: Tolerance matching of freewheel bushings, axial tuning. Special tools are required, we recommend it only to highly technically skilled owners and mechanics.

Level 3: Bearing change. Factory only.

Can I convert my Road wheel to Shimano 11s?
Yes. The Shimano 11 speed cassette requires a wider freewheel body and different hub center-line.
Extralite UltraRear SX/SLX/SPX Shimano 11s standard are now ready available. Retrofit kits are available for UltraRear SX/SLX/SPX.

Important tech note:
The freewheel installation requires rather high tech skills, precise caliper, tools and a well-lighted, clean working environment.
In some cases the installation may require also "Bushing Tolrance kit + seal preload washers kit".
Specify whether the hub-shell of your UltraRear SX/SLX/SPX has the writing "version 2.0" or does not.
Before orderingcarefully read and consider the Level 1 & 2 instructions (our website's Tips & Manual section) to decide if you can really do it by yourself.

How to convert UltraRear SX/SLX/SPX (Shimano 9-10s) into Shimano 11s, 131mm (recommended)
UltraRear SX/SLX/SPX Shim. 10s hubs can be converted into Shimano 11s with the following parts and operations:
1) Matched installation of special Shimano 11s freewheel body
2) Right Axle-end
3) Re-adjustment of rim camber (slight only)

How to convert UltraRear SX/SLX/SPX (Shimano 9-10s) into Shimano 11s, 130mm
UltraRear SX/SLX/SPX Shim. 10s hubs can be converted into Shimano 11s with the following parts and operations:
1) Matched installation of special Shimano 11s freewheel body
2) Right Axle-end
3) Left Axle-end
4) Re-adjustment of rim camber

How to convert UltraRear SX/SLX/SPX (Campagnolo) into Shimano 11s, 131mm (recommended)
UltraRear SX/SLX/SPX Campagnolo 11s hubs can be converted into Shimano 11s with the following parts and operations:
1) Matched installation of special Shimano 11s freewheel body
2) Left Axle-end
3) Re-adjustment of rim camber (slight only)

How to convert UltraRear SX/SLX/SPX (Campagnolo) into Shimano 11s, 130mm
UltraRear SX/SLX/SPX Campagnolo 11s hubs can be converted into Shimano 11s with the following parts and operations:
1) Matched installation of special Shimano 11s freewheel body


Can I convert my MTB HyperRear / HyperCamber wheel (standard 135mm or QR12) to Sram XD-Drive XX-1 system?
To convert HyperRear / HyperCamber (135mm or QR12) into Sram XD-Drive (XX-1) you need:
1) XD drive kit.
2) Manual.

3) Re-execute hub bearing preload tuning.

 

Older models: ExtraDisc , ExtraDisc v2.0 , ExtraDisc UL, ExtraTerra, ExtraTerra UL, ExtraRoad SL, ExtraClimbSLC.


Axle micro tuner setting:

Remove right axle end using a 5mm allen wrench.
In case left axle end unscrews first, remove it and insert a 10mm allen key into axle. Re-assemble left axle. Pull out freewheel body.
Push axle from right to left side.
As left bearing pops out avoid any movement of the internal preload tuner (mark its position with the axle, use a permanent pencil)
Unscrew axle and left axle end, then remove bearing.

In case you have lost original bearing tuner setting use as starting position (left to right bearing distance on axle fittings ):
ExtraDisc: 43.95mm
ExtraTerra / ExtraRoad SL: 43.75mm
ExtraRoad SLC: 43.80mm

Insert axle into hub-shell, insert left bearing into hub-body.
Warning: do not push bearing pressing on its inner race. Proper bearing insertion requires pressure on the outer race only.
Tighten left axle-end, insert freewheel (without pawls), and then tighten right axle end.
Try rotating the wheel, checking for smoothness and play (with a tightened quick release).
If necessary adjust bearing tuner again (shorten bearing distance if you wish to reduce play, lengthen to increase smoothness)
Bearing axial tuning involves axle length variations of +/- 0.05mm max, that means 1/10th of a turn of the micro tuner device (thread is counter-clockwise).
The adjustment procedure is simpler than it sounds, once you have done it a few times.
Partially insert freewheel (with pawls), check for correct pawls positioning/engagement, insert freewheel, tighten right axle end. Done!