Newbie Question

Q&A for all things iSport

Newbie Question

Postby willycs » Thu Aug 12, 2010 12:53 pm

I have had alot of trouble with flats lately. I went through three on one mornings ride. So I went out and bought a real thick (thorn proof) tube (700 x 23). When I got on to ride the next day I noticed during my warm up the iSport displayed 40W while coasting downhill. All I could think to do was to run through the fast start setup. I did that and everything seemed fine. My question is: could the new tube have changed the orientation (tilt) of the front wheel enough to mess up the iSport? If it changed the circumference it would have just affected speed?


Bill Snyder
Posts: 2
Joined: Thu Jul 08, 2010 7:05 pm

Re: Newbie Question

Postby Velocomp » Thu Aug 12, 2010 4:04 pm

You likely need to do a new tilt calibration. Your thicker tire is pointing your bike uphill slightly, causing watts readings.
John Hamann
Velocomp CEO
Posts: 4456
Joined: Fri Jan 11, 2008 9:43 am

Return to iSport

Who is online

Users browsing this forum: No registered users and 1 guest