E-Bones W F.A.Q/TIPS
What about E-Bones W stiffness?
Deformation is only 1.5mm at pedal eye under 100kg load.
Wich E-Bones W version fits my frame ?
Unlike mass-produced
crankset E-BonesW are available different BB versions:
1) BSA 68mm
2) BSA 73/68mm (fits also BSA68mm shell + E.type deralier)
3) BB30-68 (42mm internal diameter, 68mm wide)
4) BB30-73 (42mm internal diameter, 73mm wide)
5) BB91-42 (42mm
internal diameter, 84.5mm wide, 68.5mm bearing to bearing)
6) PF30-68 (46mm internal diameter, 68mm wide)
7) PF30-73 (46mm internal diameter, 73mm wide)
Check your BB size, check frame manual or ask your frame manufacturer otherwise
measure it yourself.
We recommend
to use BSA73/68mm only where strictly necessary for the following reasons:
1) BSA73mm puts chainline to MTB limits
2) Wider chainline affects shifting performance
3) Crankset weight a bit more and have a larger "Q" factor.
We hope it helps you.
What about E-Bones W models compatibility ?
Compatibility
of E-BonesW BSA68mm & BSA73-68mm.
BSA 68mm version fits BSA68mm shells (with regular derailleur only)
BSA73-68 can fit BSA73mm shells and BSA68mm shells (using 2 included spacers).
BSA 73-68mm version fits also BSA68mm shell + E.type deraillieur (using only
1 included spacer).
Frames equipped with BSA 73mm shell + E.type deraillieur are not compatible
with E-BonesW cranks. Additionally note that in these frames chainline is
way too wide to allow proper shifting performance (unless you use a DH specific
rear hub spaced over 140mm).
Compatibility
of E-BonesW BB30-68, PF30-68 and BB30-73, PF30-73.
E-BonesW BB30-68 version fits BB 30 frame shells (68mm wide) E-BonesW BB30-73
version fits BB 30 frame shells (73mm wide)
E-BonesW PF30-68 version fits PF 30 frame shells (68mm wide) E-BonesW PF30-73
version fits PF 30 frame shells (73mm wide)
Compatibility
of E-BonesW BB91-42.
E-BonesW BB91-42 version fits standard "Press Fit" frame shells (84.5mm wide
/ 68.5mm bearing to bearing)
Compatibility
of E-BonesW with 41mm internal diameter BB
Unfortunately some bike
manufactures have introduced a weird 41mm bore that has been deliberately
made to force customers to use tipical oem cranksets tipically featuring
smaller axles and smaller 6805 bearings (25-37-7mm).
The weird 41mm bore can't fit the contemporary cranks nor the durable bearings
6806 (30-42-7mm).
In the most cases the frame bb-shell can be re-bored to 42mm but to do this
rather simple operation you'll need a special tool that's not commonly available
yet.
To solve this crazy compatibilily problem we working on a reduced version
of our 6806 bearings that fits the weird 41mm BB shell bore, however it will
take few months.
To know your BB shell size check frame manual or ask your frame manufacturer. Otherwise measure it yourself.
How do I measure my BB shell ?
To do it put your bike up-side-down and measure your frame bb shell. Measure "left to right bb" shell faces in mm. Just measure distance of frame BB shell "left face" to "right face" , do not iclude your actual bb flanges or parts.
For pressed-in
bearings:
Precisely make the
following measures to get the correct E-BonesW BB standard (pressed-in bearings):
1) BB width (+/- 0.1mm accurancy)
2) Distance between left and right bearing shoulders (+/- 0.1mm accurancy)
3) "Press-Fit" Bearing fitting diameter (+/- 0.02mm accurancy)
How do I complete E-Bones W cranckset ?
To complete
a 3x9 setup you need OctaRamp 44-32-22E and 2 sets ExtraBolt1
To complete a 2x9 set up you need OctaRamp 44-30T (or OctaRamp Gara) and
1 set ExtraBolt1.2
Can
I convert my E-Bones W to fit another BB standard ?
How to convert E-BonesW BSA68mm into BB30-68
(or PF30-68)
E-BonesW BSA68mm can be easily converted into E-BonesW BB30-68 (or PF30-68)
with the following parts:
1set E-BonesW Mounting-ring Euro 10.-
2pc. E-BonesW BB30 (or PF30) bearing cups Euro 19.-/each
E-BonesW BB30-68 (or PF30-68) installation manual
How
to convert E-BonesW BSA73/68mm into BB30-73 (or PF30-73)
E-BonesW BSA73/68mm can be easily converted into E-BonesW BB30-73
(or PF30-73) with
the following parts:
1set E-BonesW Mounting-ring Euro 10.-
2pc. E-BonesW BB30
(or PF30)
bearing cups Euro 19.-/each
E-BonesW BB30-73
(or PF30-73)
installation manual
How
to convert E-BonesW BSA68mm into BB91-42
E-BonesW BSA68mm can be easily converted into E-BonesW BB91-42 with the following
parts:
1set E-BonesW Mounting-ring Euro 10.- 2
BB91-42 internal spacers Euro 4.-
E-BonesW BB91-42 installation manual
How
to convert E-BonesW BB30-68 into BSA68mm
E-BonesW BB30-68 can be easily converted into E-BonesW BSA68mm with the following
parts:
1pc. E-BonesW BSA68mm "R" bearing cups Euro 19.-
1pc. E-BonesW BSA68mm "L" bearing cups Euro 19.-
E-BonesW BSA68mm installation manual
How
to convert E-BonesW BB30-73 into BSA73/68mm
E-BonesW BB30-73 can be easily converted into E-BonesW BSA73/68mm with the
following parts:
1pc. E-BonesW BSA73/68mm "R" bearing cups Euro 19.-
1pc. E-BonesW BSA73/68mm "L" bearing cups Euro 19.-
1set E-BonesW BSA73/68mm spacers Euro 5.- (optional, to fit BSA68)
E-BonesW BSA73/68mm installation manual
My left crank/axle bolt gets loose after riding, what can I do?
Probably
in your case the left crank does not properly press onto the axle hexagon,
it pushes instead on the "bearing-preload and locking OR".
(Warning: This can damage the Axle thin thread and "Bearing Preload"itself)
These conditions can happen only when BB shell is wider than the nominal size
of crank axle version (or when you insert additional spacers or e-type deralier).
As for installation instructions BB shell tolerance should be nominal size
+/- 0.2mm.
To double check it you can try the left crank/axle proper fitting simply taking
out the "Locking Or" and reassembling. This way the crank will not push on
the "Bearing Preload" and will properly press onto the axle fitting. If this
works fine you have found the reason.
In this case change the Locking OR (3x22mm) with a thinner unit (2.5x22mm
or 2x22mm) as quick and symple solution. Please note that we can provide them
if you can't find them locally.
Clean well hexagonal fittings on axle and left crank, assemble as manual instructions,
apply anti-seize grease on fittings and threads, DO NOT use Loctite.
No "Locking O-ring" Test - (for expert mechanic only)
In
case your left crank does not press properly onto the axle hexagon it could
push instead on the "bearing-preload and locking OR".
(Warning: this can be dangerous for your safety, additionally will damage
the Axle thin thread and "Bearing Preload"itself)
These conditions can happen only when BB shell is wider than the nominal size
of crank axle version (or when you insert additional spacers or e-type deralier)
or for incorrect tolerance matching at factory assembling.
As for installation instructions BB shell tolerance should be nominal size +/- 0.2mm.
To
double check it you can try the left crank/axle proper fitting simply taking
out the "Locking Or" and reassembling. This way the crank will not push on
the "Bearing Preload" and will be free to press-fit onto the axle fitting.
Carefully use the bike for a test ride only.
If this works fine you may have found the reason.
In this case change the Locking OR with a thinner unit (2.5x22mm or 2x22mm) ant test again.
Warning: do not race or ride intensly before repeated tests give repeated positive results.
Alternatively send your Right Crank/axle + Preload Ring + Left Crank to us for a check.
How can I find the correct preload O-ring?
Matching
the correct Locking O-ring E-BonesW/QRC preload O-ring are factory matched
for a correct crank axial tolerance.
The Locking OR factory matching employes 3 different thickness OR sizes to
properly match axial tolerances.
In case you have to re-select the correct "Locking OR" for your crankset strictly follow this procedure:
1) Start
installing the thin Locking OR (22x2.0mm)
first precisely following the E-BonesW/QRC installation procedure.
Check it's function: the Preload Ring should have enough stiction to be hardly
turned by hand (normally use the E-BonesW/QRC tuning tool) and still allow
enough room for the left crank press-fitting onto the axle hexagonal-cone.
2) In case
the Preload Ring turns too easily install the medium
Locking OR (22x2.63mm) precisely following the E-BonesW/QRC installation
procedure.
Check it's function: the Preload Ring should have enough stiction to be hardly
turned by hand (normally use the E-BonesW/QRC tuning tool) and still allow
enough room for the left crank press-fitting onto the axle hexagonal-cone.
3) In case
the Preload Ring still turns too easily install the
thick Locking OR (22x3.0mm) precisely following the E-BonesW/QRC
installation procedure.
Check it's function, the Preload Ring should have enough stiction to be hardly
turned by hand (use the E-BonesW/QRC tuning tool) and still allow enough room
for the left crank press-fitting onto the axle hexagonal-cone.
Note: in this case your frame BB shell width is probably below its nominal
dimensional tolerance.
The "locking O-ring kit" is available as spare part and includes includes 22x 2.0mm / 2.63mm / 3.0mm O-rings.
It's function is to add stiction to Preload Ring and avoid unwanted turning while riding.
My crank make strange noises, what can I do?
Noises can
come from bolt-on parts only, to eliminate them check well the following:
1) Left crank / axle tightening (try the procedure described above)
2) BB bearing cups/frame tightening, (additionally you can secure them with
Loctite 243).
3) Chainring bolts tightening (especially check theit complete threading in
on OcaRamp 30T)