CyberRear SPD(2) wheelbuilding
Here you find all the necessary instructions to realize your dream wheels with precalculated spoke lengths.
Follow instruction step by step:
1)Measure your "spokeend 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)
Maximum spoke tension: Refer to manual
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.
Warning:
spoke lacing and tensioning require skills and experience,refer to an expert
professional wheel builder for these operations.
1)"spokeend 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 "spokeend diameter" and rim drilling.
Spokeend
diameter depends on your rim internal diameter and nipple type.
How to measure "spokeend diameter"
2)CyberRear SPD(2)
Left side  Radial lacing  Straightpull spokes
Spokeend
Diameter

Spoke
Length

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 
294 
Table A
Note: We
list "spokeend diameters" every 5mm step. If your "spokeend
diameter" measure is in between 2 steps adjust your spoke length consequently.
Example 1: your "spokeend diameter" is 563mm use 268mm spoke.
Example 2: your "spokeend diameter" is 567mm use 270mm spoke.
Example 3: your "spokeend diameter" is 569mm use 271mm spoke.
3)CyberRear SPD(2)
Drive side  Straightpull spokes
Spokeend
Diameter

Spoke
Length
24H 
515

253

520

256

525

258

530

261

535

263

540

266

545

268

550 
271

555

273

560

276

565

278

570

281

575

283

580

286

585

288

590

291

595

293

600

296

605

298

610

301

615 
303 
Table B
Note:
We list "spokeend diameters" every 5mm step. If your "spokeend
diameter" measure is in between 2 steps adjust your spoke length consequently.
Lacing: correct lacing patterns with straightpull spokes must be as shown below.
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