Cyber SPC/SPD wheel building
CyberFront & Rear SPD3+ / SPC3+ (SPD-3) 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 front hub spokes length on table A
3) Find your rear spokes length on table B
(All measures are expressed in mm)
4) Respect the correct lacing pattern
5) See specific notes about spoke materials
Rim offset:
2-3mm of rim offset influences the spoke length for an average 0.3mm only.
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) CyberFront SPD3+ / SPC3+
Straight-pull spokes - 24H
|
Spoke-end Diameter
|
Disc Side
|
Right Side
|
|
515
|
253
|
256
|
|
520
|
256
|
259
|
|
525
|
258
|
261
|
|
530
|
261
|
264
|
|
535
|
263
|
266
|
|
540
|
266
|
269
|
|
545
|
268
|
271
|
|
550 |
271
|
274
|
|
555
|
273
|
276
|
|
560
|
276
|
279
|
|
565
|
278
|
281
|
|
570
|
281
|
284
|
|
575
|
283
|
286
|
|
580
|
286
|
289
|
|
585
|
288
|
291
|
|
590
|
291
|
294
|
|
595
|
293
|
296
|
|
600
|
296
|
299
|
|
605
|
298
|
301
|
|
610
|
301
|
304
|
|
615 |
303 |
306 |
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.
3) CyberRear SPD3+ / SPC3+
Straight-pull spokes - 24H
|
Spoke-end Diameter
|
Drive Side
|
Disc Side
|
|
515
|
253
|
256
|
|
520
|
256
|
259
|
|
525
|
258
|
261
|
|
530
|
261
|
264
|
|
535
|
263
|
266
|
|
540
|
266
|
269
|
|
545
|
268
|
271
|
|
550 |
271
|
274
|
|
555
|
273
|
276
|
|
560
|
276
|
279
|
|
565
|
278
|
281
|
|
570
|
281
|
284
|
|
575
|
283
|
286
|
|
580
|
286
|
289
|
|
585
|
288
|
291
|
|
590
|
291
|
294
|
|
595
|
293
|
296
|
|
600
|
296
|
299
|
|
605
|
298
|
301
|
|
610
|
301
|
304
|
|
615 |
303 |
306 |
Table B
We list "spoke-end diameters" every 5mm step. If your "spoke-end diameter" measure is in between 2 steps adjust your spoke length consequently.
4) Lacing pattern
Lacing: correct lacing patterns with straight-pull spokes must be as shown below.
Maximum spoke tension: Refer to manuals
CyberFront SPD3+ CyberRear SPD3+
CyberFront SPC3+ CyberRear SPC3+
Warning: spoke lacing and tensioning require skills and experience, refer to an expert professional wheel builder for these operations.
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:
SPD3+ and SPC hubs feature 3D angled spoke flanges thereafter the above process should be done only for checking and eventual minimal corrections.
Anyhow always remind 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.