CyberRear SP From 129g

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Road-race straight-pull rear hub, optimal spoke camber, QR 10x130mm standard, oversized axle Ø17mm, ABEC5 cartridge bearings (high load capacity) with external hexagonal preload tuner. Titanium 32T ratchet wheel, OR-spring oversized and sealed freewheel body. Black anodized hub-body with laser etched graphics. Flanges options (for straight pull spokes): 24-28h Freewheel options: ShimanoR 12s/Sram 11s - Sram XDR Drive - Campag. N3W - Campag. 11/12S Bearing options: Abec5 Steel, 440C Stainless Steel, HyperCeramic, XD-15 Ceramic. Weight: 134g (28h)

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Drillings Cassette standard Bearings

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Description
Hub Dimension
Lacing
Spoke-End-Diameter
Manuals
Spare Parts

Tech info

Hub Dimension

Lacing

CyberRear SP wheel-building

Here you find all the necessary instructions to realize your dream wheels with pre-calculated spoke lengths.

Follow instruction step by step:

1)Measure your "spoke-end diameter"

2)Find your rear spoke length (left side) on table A

3)Find your rear spoke length and lacing pattern (drive side) on table B

(All measures are expressed in mm)

4)Lace the wheel respecting correct lacing pattern (see below)

Rim offset:
(normally 2 - 3mm) influences the spoke length for an average 0.3mm.
You may neglect it or eventually use that tiny amount just for rounding lengths to the available spoke size.

Maximum spoke tension:- Refer to manual

Warning: spoke lacing and tensioning require skills and experience,refer to an expert professional wheel builder for these operations.

1)"spoke-end diameter"

Rim manufacturers always offer ERD figures however we warmly recommend to precisely measure the rim+nipple combination.

Basically a correct spoke calculation requires exact "spoke-end diameter" and rim drilling.

Spoke-end diameter depends on your rim internal diameter and nipple type.

How to measure "spoke-end diameter"

2)CyberRear SP

Left side - Radial lacing - Straight-pull spokes

Spoke-end Diameter	Spoke Length
515	245
520	248
525	250
530	253
535	255
540	258
545	260
550	263
555	265
560	268
565	270
570	273
575	275
580	278
585	280
590	283
595	285
600	287
605	290
610	292
615	294

Table A

Note: We list "spoke-end diameters" every 5mm step. If your "spoke-end diameter" measure is in between 2 steps adjust your spoke length consequently.
Example 1: your "spoke-end diameter" is 563mm use 269mm spoke.
Example 2: your "spoke-end diameter" is 567mm use 271mm spoke.
Example 3: your "spoke-end diameter" is 569mm use 272mm spoke.

3)CyberRear SP

Drive side - Straight-pull spokes

Spoke-end Diameter	Spoke Length 20H	Spoke Length 24H	Spoke Length 28H
515	261	253	261
520	263	256	263
525	266	258	266
530	268	261	268
535	271	263	271
540	273	266	273
545	276	268	276
550	278	271	278
555	281	273	281
560	283	276	283
565	286	278	286
570	288	281	288
575	291	283	291
580	293	286	293
585	296	288	296
590	298	291	298
595	301	293	301
600	303	296	303
605	306	298	306
610	308	301	308
615	311	303	311

Table B

Note: We list "spoke-end diameters" every 5mm step. If your "spoke-end diameter" measure is in between 2 steps adjust your spoke length consequently.

Lacing: correct lacing patterns with straight-pull spokes must be as shown below.

Spoke-End-Diameter

How to measure "Spoke-End-Diameter"

Spoke-end diameter depends on your rim and nipple type and length.

Below you see how to measure SED for both nipple types:
External nipple configuration
Internal nipple configuration

Take measures very precisely because a well correct nipple/spoke assembly accepts a spoke-length tolerance of +/-1mm only.
(All measures are expressed in mm)

External nipple configuration

1) Insert two J-spokes (random size) with the nipples (of your final build) into 2 opposite rim holes.

This simple trick helps to keep spokes aligned and slightly tensioned.

2) Precisely measure distance between nipples.

Be careful to take measure between the 2 nipple-ends.

3) Add 2x by the nipple height (of your final build) to the measure above.
This gives "Spoke-End-Diameter".
Note: with slotted nipples measure height inside the cut.

cutted nipple

Internal nipple configuration

You can get the necessary data following the procedure below:
1) Precisely measure outer rim diameter (A).

2) Insert a nipple of your final build into a hole (use a spoke to hold nipple in position).
3) Precisely measure distance between nipple-top and outer rim diameter (B).