Spoke Length Notes

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Measuring Hubs

Shimano specifies hub flange offsets from the dropout face to the outside of the flange. Some calculations specify the center of the flange. Some specify the inside of the flange. This will change your results.

http://www.geocities.com/spokeanwheel/measure.htm#hf

http://www.damonrinard.com/spocalc.htm#MeasureHubAndRim

http://www.wheelpro.co.uk/spokecalc/measure.html

Measuring Rims

http://www.geocities.com/spokeanwheel/measure.htm#rm

http://i32.photobucket.com/albums/d7/k4drd/Bicycles/MeasuringERD.jpg

http://www.damonrinard.com/spocalc.htm#MeasureHubAndRim

Rims

  • Mavic 819 Disc ERD - 532mm (Official), 518.5g. with special nipple nipples.
    • Use 534mm or 533 erd in practice. QBP uses 535mm
  • Velocity USA 650B Blunt rims - ISO 44-584. 32 hole. 562 ERD. Claimed weight 459g. Actual weight 464.8g.
  • Velocity Synergy 650b OCR rims - ISO 44-584. 32 hole. 567 ERD. 3mm offset
  • Salsa Delgato 29er Rims - ERD 604
  • Alex DA28 - ERD 584.8, 480g. (Quality lists ERD as 587mm, but 585mm in fact builds better)
Quality lists ERD as 597, DT lists ERD as 599. I belive it's really 596mm.

Hubs

Shimano XTR

Rear FH-M975

  • Hole PCD (mm) - Left 44/Right 45
  • Dish - 6.6mm
  • Flange distance - Official -le. 35.3mm, ri. 22.1mm (on center -le. 33.65mm, ri. 20.45mm)
  • Ø of spoke hole - 2.6mm

Front HB-M975

  • Hole PCD (mm) - Left 44/Right 40
  • Dish - 5.4mm
  • Flange distance - (on center -le. 23mm, ri. 34mm)
  • Ø of spoke hole - 2.6mm

Front HB-M978 QR15

  • Hole PCD (mm) - Left 44/Right 44
  • Dish - ?mm
  • Flange distance - QBP -le. 22mm, ri. 33mm
  • Ø of spoke hole - 2.6mm

http://techdocs.shimano.com/media/techdocs/content/cycle/EV/bikecomponents/HB/EV-HB-M978-2839A_v1_m56577569830648101.pdf
http://techdocs.shimano.com/media/techdocs/content/cycle/SI/SI_26P0A_001/SI-26P0A-001-EN_v1_m56577569830646827.pdf

Shimano XT FH-M775 Centerloc

Rear

  • Hole PCD (mm) - Left 44/Right 45
  • Flange Distance - 57.4mm (on center - 54.1
  • Dish - 6.6mm
  • Flange distance - Official -le. 35.3mm, ri. 22.1mm (on center -le. 33.65mm, ri. 20.45mm)
  • Ø of spoke hole - 2.6mm

Front

  • Flange Diameter - Left 44/Right 41
  • Center to Flange - Left 22/Right 33
  • Ø of spoke hole - 2.6mm

Deore XT FH-M765 Centerloc

Front

  • Pitch Circle Diameter: 44mm L., 41mm R.
  • Flange Distance: 24.8mm L., 35.8mm R.
  • Ø of spoke hole: 2.6mm
  • Holes: 32

Rear

  • Pitch Circle Diameter: 45mm L., 45mm R.
  • Flange Distance: 35.35mm L., 23.05mm R.
  • Ø of spoke hole: 2.6mm
  • Holes: 32

Shimano 105 HB-5600

Front

  • Pitch Circle Diameter: 38mm
  • Flange Distance: 34mm
  • Ø of spoke hole: 2.6mm
  • Holes: 32

Formula CL-91

Rotor Adapter Type.

  • Front 100mm hub. 32 hole
  • Flange Distance from Center: L- 27.5mm, R- 17.5mm
  • Pitch Circle Diameter: L- 44.5mm, R- 44.5mm
  • Ø of spoke hole: 2.5mm

Velocity USA 'Road Disc' 130mm rear hub

32 hole. Actual weight (no QR) - 349g.

  • Pitch Circle Diameter: 62mm L., 51.5mm R.
  • Flange Distance: 31mm L., 17mm R.
  • Ø of spoke hole: 2.6mm
  • Holes: 32

Hadley H500405 Single Speed Hub

  • Pitch Circle Diameter: 60mm L., 60mm R.
  • Flange Distance: 33.2mm L., 33.2mm R.
  • Ø of spoke hole: 2.5mm
  • Holes: 32

CycleOps PowerTap SL

  • Pitch Circle Diameter: 70mm, R&L
  • Flange Distance: 31.7mm L., 17.4mm R.
  • Ø of spoke hole: 2.5mm
  • Holes: 32

Shimano Alfine SG-S501

Non-Drive Side Center to Flange: 31.8 mm Drive Side Center to Flange: 25.5 mm Non-Drive Side Flange Diameter: 104.3 mm Drive Side Flange Diameter: 104.3 mm

Wheelsets

MTB Wheels

  • XTR Front on Mavic 819 Disk, 259L, 260R
  • XTR Front M978 QR15 on Mavic 819 Disk, 260L, 261R
  • XTR Rear on Mavic 819 Disk, 260L, 258R

Road Wheels

  • Dura-ace 28 hole hub on DT Swiss 1.1, 2 cross, 288mm spokes on both sides.
  • Dura-ace 28 hole Rear hub on DT Swiss 1.1, 2/3 cross, D294mm, ND286mm
  • 105 HB-5600 Hub / DA-28 Alex Rim / 2 Cross, 280mm Spokes both sides.
  • Shimano XT 775 centerloc front 32 hole laced 16 on Alex R390 650c, 2 cross, L276 R277
  • WTB Single Duty 32 hole laced 16 on Alex R390 650c, 2 cross, L277 R278

650b Powertap Wheel

  • CycleOps PowerTap 32 hole Rear hub on Velocity Synergy 650b OCR, 2/3 cross, D272mm, ND261mm

650c Powertap Wheel

  • CycleOps PowerTap 32 hole Rear hub on Alex R390 650c (571x13), 2/3 cross, D264mm, ND253mm

Cross Wheels

  • XT M775 32h Front on Alex DA28 700c rim, 3 cross, 286L, 287R
  • XT M775 32h Rear on Alex DA28 700c rim, 3 cross, 286(-)L, 284(-)R
  • Velocity 130mm Disk hub on Alex DA28 700c rim, 3 cross, 282L, 282R
  • Shimano Alfine 32h Rear on Alex DA28 700c rim, 3 cross, 279.33L, 278.64R

DH Wheels

  • Hadley H500145 R2.2 20mm Front on Mavic EX823 UST, 3 cross, 32 hole, 256(-)L, 257(-)R

Cheapo 29er

Salsa Delgato Rims w/ Deore XT Centerloc hubs

Front:

  • ERD 604
  • Pitch Circle Diameter: 44mm L., 41mm R.
  • Flange Distance: 24.8mm L., 35.8mm R.
  • Dia of holes: 2.6mm
  • Holes: 32
  • Crosses: 3 L, 3 R.
  • Spokes: DT 1.8 Straight
  • Nipples: DT 1.8/12mm
  • Spokes 293mm L., 295mm R.

Rear:

  • ERD 604
  • Pitch Circle Diameter: 45mm L., 45mm R.
  • Flange Distance: 35.35mm L., 23.05mm R.
  • Dia of holes: 2.6mm
  • Holes: 32
  • Crosses: 3 L, 3 R.
  • Spokes: DT 1.8 Straight
  • Nipples: DT 1.8/12mm
  • Spokes 294mm L., 293mm R.
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