Wheelbulid of CyberRear SP-T

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

3)Check your rim for compatibility and hole distance, if uneven see correction factor

4)Find your rear spoke length (drive side) on table B and eventually apply correction factor

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.

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.

Compatible with standard and triplet specific rims.
On standard rims spoke holes must be with vertical drilling. Angled drillings are not compatible, spokes would bend and break.

Ceck your rim: if distance between spoke holes are all equal go to point 4)
if the rim has uneven hole distances a correction factor is necessary.

Central hole is for radial spoke, two adjacents are for drive spokes.
Measure distance between central hole and adjecent, see below.

Spoke-end Diameter	Spoke Length 24H
500	249
505	251
510	254
515	256
520	259
525	261
530	264
535	266
540	269
545	271
550	274
555	276
560	279
565	281
570	284
575	286
580	289
585	291
590	294
595	296
600	299
605	301
610	304
615	306

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.

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.

5) Spoke Materials

Steel Spokes: Hub f langes accept standard spoke heads however we recommend to use only high quality "butted" steel spokes.
Butted spokes are lighter and allow a better spoke aligningment that translates in a reduced stress of the parts and an overall stiffer lacing.

Berd spokes: Flanges are designed to fit Berd spokes too.
All edges are well rounded thereafter "Tangential Straightpull Inserts" are not necessary.
Consequently adjust Table A lenghts as follows:
- subtract 2mm from Table values if "Without Tangential Straightpull Inserts"
- keep same values on Table if "With Tangential Straightpull Inserts"

Berd Tangential Straightpull Insert

Carbon-Titanium Spokes: Hub flanges accept composite spoke that feature standard thin metal ends (Titanium or Steel) since
the short metal head should be well bendable in order to get the spoke correctly aligned with the rim.
When lacing Carbon Titanium spokes make sure to add this important step to the lacing process:
- As spokes are fully tensioned settle spoke heads (before final truing).
- To settle spoke heads push the metal area of the spoke immediately after the hub flange with
a small wood/plastic rod in order to settle them permanently to the exact direction.
- Then execute the final truing.

Note that cabon-metal spokes are extremely sensitive to the following:
- Twist: thread-to-head section should never get twisted not even during lacing.
- Spoke to nipple-alignment: each nipple should get perfectly aligned with its spoke.
- Avoid exposure to hi-temperatures as behind car windows under hot sun, transport, storage etc.
- Avoid hits with any hard object during riding, transport, storage etc.

Fully respect these basic info before and after installation.

Spoke-end Diameter	Spoke Length
500	237
505	239
510	242
515	244
520	247
525	249
530	252
535	254
540	257
545	259
550	262
555	264
560	267
565	269
570	272
575	274
580	277
585	279
590	282
595	284
600	286
605	289
610	291
615	293