miercuri, 13 aprilie 2016

Road tire width dimension

@www.slowtwitch,com

I searched on the Internet to find relevant information about the real tire dimensions mounted on different rims. Yes, are plenty information out there but not the needed one. So I choose to measure myself the tires that I have.

Those are the results:

700x28c Continental Grand Prix 4000S II (front): 29.40mm
Mounted on Giant PR-2 rim (20.73mm external rim widthl), pressure 7.7 bars (110 PSI)

700x25c Mavic Yksion Pro GripLink (front): 26mm width
700x25c Mavic Yksion Pro PowerLink (rear): 26mm width
Both are mounted on Mavic Ksyrium Elite wheels (17 mm internal rim width), pressure 7.7 bars (110 PSI)

700x25c Mavic Yksion Elite Guard (front and rear): 24.5mm width
Both are mounted on Mavic Cosmic Pro Carbon Exalith wheels (13 mm internal rim width, 19mm external), pressure 7.7 bars (110 PSI).

700x23c Hutchinson Atom Comp (front and rear): 23mm width
Both are mounted on DT Swiss RR585 (RR1.2) rims (14 mm internal rim width, 19.5mm external), pressure 8.7 bars (125 PSI)

sâmbătă, 2 aprilie 2016

Aero wheels don't like cross wind gusts

A well known rule said the aero wheels don't like cross wind gusts. Well, I tested on me, and yes, it's true!

Yes, I know... There is no wind in the photo, but was much in the open road
At 22 km/h constant cross wind speed with gusts exceeding 28 km/h, was a nightmare ride. You may ask why I chose those wheels if I knew the weather forecast. Well, from my home window I see only a tiny waft.

So, I learned a lesson on my own. Before ride, read the fucking forecast and look for the wind even if it is beautiful outside!!!