Wheelsets/Hubs tips

 

Does this wheelset fit a rider of my weight?
All our products excede Uni/Din safety standard requirements.
However you surely undertsand that rider weight plays a minor role in the energy q.ty count:
1) Speed itself increases by sqare factor the loads applied while hitting an obstacle. Suspension correct tuning is also playing a sensible rule.
2) Personal riding style can put extremely high or very limited loads on swingarm and seatube.

What type of manteinance I should do on UltraHubs?
On UltraHubs manuals you find "Manteinance Level 1" for basical cleaning, lubrification and reassembly.

Warning: Use only very soft density grease AluGrease Super 1.
Medium or hard density grease may cause un-complete pawl engagement and this will seriously damage freewheel mechanism.
Chemical additives may affect phisical properties of Lip-Seal, O-ring spring and Bushings.

Is Campagnolo UltraHubs compatible with Campagnolo 11-speed?
Yes, it's compatible. However 11-speed Campagnolo cog can (depending on tolerances) sligthly rub against drivetrain spokes/holders. We supply special thin spacers (0.3mm) to fine tune cleareance.
Warnings
1) Use our spacers if strictly necessary (cog rubbing against drivetrain spokes/holders).
2) Do not insert any other spacers.
3) Properly align all cogs in contact with to freehub splines.
4) Tighten cassette locking ring to a moderate torque (10-15Nm).

I have a Shimano compatible rear UltraHub SX, how do I convert it to Campagnolo?
Changing UltraRear hub cassette type is possible but not as simple as it might seem.
The following parts have to be changed:
Freewheel body
Left and right axle ends Hub
Internal tuning and spacing
Rim lacing camber

It's normally easier to send your wheel/hub to us for this sevicing, in this case it will cost approx. € 180 + shipping.

I have a Shimano compatible rear UltraHub SR, how do I convert it to Campagnolo?
Changing UltraRear hub cassette type is possible but not as simple as it might seem.
The following parts have to be changed:
Freewheel body
Main axle
Left and right axle ends Hub
Internal tuning and spacing
Rim lacing camber

It's normally easier to send your wheel/hub to us for this sevicing, in this case it will cost approx. € 250 + shipping.

Can I service UltraHubs/Wheels?
UltraHubs are fully serviceable, however we divided hub maintenance into 3 levels of technical know how:
Level 1: Frewheel cleaning/oiling is in. 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.

I want to buy an UltraHub SX could you tell me spoke lenght for my rim?
Go to this page for SX wheelbuild instruction.

I want to buy an UltraHub SPD could you tell me spoke lenght for my rim?
Go to this page for SPD wheelbuild instruction.

I want to buy an UltraHub SL could you tell me spoke lenght for my rim?
Yes, we offer a spoke calculation service for alloy rims.
Basically a correct spoke calculation requires exact "spoke-end" diameter, this depends on your rim and nipple type.
1) Insert nipples into 2 opposite rim holes.
2) Precisely measure distance between nipples.
3) Add 2x nipple height to distance above, this is "spoke-end" diameter.
4) Hub/rim drilling and lacing pattern, (our normal chioce is radial front and rear left side, crossing on drive side only).

We recommend Sapim spokes since their regular spokes accept thick hub flanges, DT normally fits thin flanges only and reqest special ordering specifying "elbow" for 3.9mm thick flanges.

Elder models: ExtraDisc , ExtraDisc v2.0 , ExtraDisc UL, ExtraTerra, ExtraTerra UL, ExtraRoad SL, ExtraClimbSLC.
Axle micro tuner setting.
Remove right axle end using 5mm allen wrench.
In case left axle end unscrews first, remove it and insert 10mm allen 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 internal race, proper bearing insertion requires pressure on its external race only.
Tighten left axle-end, insert freewheel (without pawls), tighten right axle end.
Try wheel  rotating smoothness and play (with tightened quick release).
If necessary adjust bearing tuner again (shorten bearing distance if you feel play, opposite to increase smoothness)
Bearing axial tuning involves axle lenght vatiations of +/- 0.05mm max, that means 1/10 of a turn of the micro tuner device (thread is counterclock).
Adjusting procedure is simpler than appears once you did it few times.
Partially insert freewheel (with pawls), check correct pawls positioning/engagement, insert freewheel, tighten right axle end.