PeterF said:
I'm not at all convinced that my low spoke, mid-aero Campy Eurus' are at all faster than my two sets of handbuits.
That Adrien guy at Roues Artisanales told me that a 28-spoke Deep V would come in at about 30w on this test he put togther. As you can see, one Eurus is only 2w less draggy than that; and that's at 50km/h
Drag at 50 kph
Great wheel test 2008 - Part 1 - Aerodynamics - Roues Artisanales - Bike tech magasine - handbuilt wheels boutique
.....................................................drag (w).......rim depth (mm)......spokes
Zipp 808 2007.....................................16.7............82...................18
Xentis MK 1 TT 2007............................17.1............58....................4
Citec 6000 Cx 2007.............................19.2............49..................12
Ritchey WCS Carbon 2005...................19.3............58..................16
HED 3 2006..........................................19.7............54...................3
Zipp 404 2007......................................19.9............58..................18
Sonic Super 50mm 2007.......................20.4............50.................20
Vuelta Carbon Pro WR 2006.................20.8............58..................12
Corima Aero 2007.................................21.0............45..................18
Easton Tempest II 2005.......................21.6............58..................18
CKT Splendor 2005...............................21.7............45..................16
Mavic Cosmic Carbone SL ....................21.9............52..................16
Lightweight Standard G3 2007.............22.2............53...................16
Shimano WH7801 Carbon 50 2006.......22.9............50..................16
Mavic Cosmic Carbone Ultimate ...........22.9............40..................20
Campagnolo Bora 2005........................23.0............50....................18
Rose Aerospoke 2006...........................23.0............53.....................4
Corima Turbospoke 2006......................23.1............38.....................3
Shimano WH7850 C50 2007.................23.2............50...................16
Bontrager Race light Carbon 2005........23.4............43...................16
Lew Racing Pro VT-1 2007....................23.4............46...................16
Shimano WH7850 C24 2007.................23.5............28...................16
Corima Tune 20 Aerolite 2007...............23.7............45....................20
Fulcrum Racing Speed 2006..................23.7............50....................18
Specialized Royal Rapid Star 2007.........23.8............32....................20
Gipiemme Carbon 5.5 2005...................24.1............55...................20
Tune Olympic Gold 2005........................24.1............45....................16
Shimano WH7801 Carbon 2006.............24.4............29...................16
FRM FL-R 23 SD 2006.............................24.6............37...................20
Lightweight Standard G3 2007..............24.6............53...................20
Lightweight Obermayer G1 2005...........24.8............53..................20
American Classic 420 2007....................24.9............34...................18
Ritchey Pro 2007...................................24.9............27...................20
Xentis Mark 1 2005 ..............................25.0............42.....................4
Speedcomposites Sinus 2007...............25.2............26.....................24
Citec 3000s Aero 2005..........................25.5............30...................12
Shimano R550 2007..............................25.9............24...................20
Shimano R560 2006..............................26.1............24....................16
Shimano R561 2007..............................26.2............24....................16
Campagnolo Scirocco 2007....................27.3............24....................20
Lightweight Ventoux 2006.....................27.3............28.....................20
Fulcrum Racing 5 Evolution 2007............27.6............24....................20
Campagnolo Eurus 2006........................27.8............24..................16
Tune Skyline KOM 2006..........................28.1............24.....................20
Mavic Aksium 2008.................................28.3............22....................20
Xtreme Light Wheels 2007.....................28.6............31.....................24
FSA RD-600 2006...................................28.7............30....................18
Easton Vista SL 2007.............................30.0............30.....................20
Mavic Aksium Race 2006.........................30.0............21.....................20
Mavic Ksyrium Equipe 2007.....................30.0............23.....................20
Citec 3000s Aero 16-spoke.....................30.6............24.....................16
Mavic Aksium Race 2007.........................31.1............21...................20
Ambrosio X-Carbo 2005..........................31.5............46...................28
Campagnolo Vento 2007.........................31.5............24...................24
A-Class ALX 440 SL 2007.........................31.9............23...................20
Campagnolo Hyperon 2006......................32.1............19...................22
Fulcrum Racing 7 2007..............................32.8............24...................20
Mavic Ksyrium ES 2006.............................33.2............21...................18
Mavic R-SYS 2007.....................................35.0............22.................16