|A project for one of you engineers||OffTheBack|
Nov 6, 2002 6:56 AM
|We all know that (all else being equal) lighter wheels are faster. And, we know that manufacturer's advertsied weights are not always comparable, since some do not include the skewer, rim tape, etc. We also know that mass at the rim contributes more to rotational inertia than mass at the hub or spokes.
So here is your assignment:
Take several of the most popular boutique wheels and a few good handbuilts, put the same rim tape on all of them, and measure the tourque (or wattage, or whatever the heck it is) necessary to accelerate the wheel from rest to the equvalent of 40 kph. This would even reflect some of the aerodynamic properties of the wheel! Then us techno-weenies could compare wheels on a level playing field.
Post the results when you're done, and next time you're in Pittsburgh I'll take you to Fatheads for chicken wings and beer.
Nov 6, 2002 10:03 AM
|email me and I will send you my address. As soon as you send everything on the list below, I will begin testing. I will need one set each:
Mavic Ksyrium SSC SL
Mavic Cosmic Carbone
Mavic Classic SSC
Mavic Open Pro (Black) w/ Record hubs
Mavic CXP33 (Black) w/ Record hubs
Your choice of rim tape, skewers and tubes
Nov 6, 2002 10:31 AM
|As a scientific methodology would require as large a testing group as possible.. for this cause I am willing to participate. Also, don't forget to include a pair of Lightweight and ADA deep rip carbon wheels as well.|
Nov 6, 2002 3:54 PM
|You bring up a good point...we will need to test for variations in the manufacturing process. Please send each of us three of each of the wheelsets.|
|Go to analyticcycling.com and do it yourself? (nm)||Kerry|
Nov 6, 2002 5:18 PM