UltraHubs SPD / HyperLefty
wheel-building
Here you find all the necessay 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 spoke length on table A & B
3)Find your rear spoke length on table B
(All measures are expressed in mm)
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)UltraFront SPD / HyperLefty
Radial lacing - Straight-pull spokes
|
Spoke-end
Diameter
|
Spoke
Lenght
|
|
26'
Rims
|
|
|
515
|
244
|
|
520
|
246-247
|
|
525
|
249
|
|
530
|
251-252
|
|
535
|
254
|
|
540
|
256-257
|
|
545
|
259
|
|
550 |
261-262
|
|
555
|
264
|
|
560
|
266-267
|
|
29'
Rims
|
|
|
580
|
276-277
|
|
585
|
279
|
|
590
|
281-282
|
|
595
|
284
|
|
600
|
286
|
|
605
|
289
|
|
610
|
291
|
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 lenght consequently.
Example 1: your "spoke-end diameter" is 553mm use 263mm spoke.
Example 2: your "spoke-end diameter" is 548mm use 260mm spoke.
Example 3: your "spoke-end diameter" is 549mm use 261mm spoke.
Example 4: your "spoke-end diameter" is 550mm use 261 or 262mm spoke.
UltraFront SPD / HyperLefty
Crossed sides - Straight-pull spokes
|
Spoke-end
Diameter |
Spoke
Lenght
28H |
Spoke
Lenght
32H |
|
26'
Rims
|
||
|
515
|
261-262
|
256-257
|
|
520
|
264
|
259
|
|
525
|
266-267
|
261
|
|
530
|
269
|
264
|
|
535
|
271-272
|
266
|
|
540
|
274
|
269
|
|
545
|
276-277
|
271
|
|
550 |
279
|
274
|
|
555
|
281-282
|
276
|
|
560
|
284
|
279
|
|
29'
Rims
|
||
|
580
|
294
|
288-289
|
|
585
|
296
|
291
|
|
590
|
298-299
|
293-294
|
|
595
|
301
|
296
|
|
600
|
303-304
|
298-299
|
|
605
|
306
|
301
|
|
610
|
308-309
|
303-304
|
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 lenght consequently.
3)UltraRear SPD
Crossed sides - Straight-pull spokes
|
Spoke-end
Diameter |
Spoke
Lenght
28H |
Spoke
Lenght
32H |
|
26'
Rims
|
||
|
515
|
261-262
|
256-257
|
|
520
|
264
|
259
|
|
525
|
266-267
|
261
|
|
530
|
269
|
264
|
|
535
|
271-272
|
266
|
|
540
|
274
|
269
|
|
545
|
276-277
|
271
|
|
550 |
279
|
274
|
|
555
|
281-282
|
276
|
|
560
|
284
|
279
|
|
29'
Rims
|
||
|
580
|
294
|
288-289
|
|
585
|
296
|
291
|
|
590
|
298-299
|
293-294
|
|
595
|
301
|
296
|
|
600
|
303-304
|
298-299
|
|
605
|
306
|
301
|
|
610
|
308-309
|
303-304
|
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 lenght consequently.
Lacing: correct lacing patterns with straight-pull spokes must be tangential, as shown below (and not as the traditional 2 or 3 crossings used for elbow spokes)
100% made in Italy