Long Distance Competition/Ultracycling, Randonneuring and Endurance Cycling - Winter Riding

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bmike
11-03-09, 12:05 PM
I try to keep it outside as much as possible... but sometimes I do ride inside.
I took apart my Kreitlers and made a 'free motion' frame for long indoor rides...
(http://www.youtube.com/watch?v=p0BQsG5aqAA)

The rollers slide back and forth on skateboard wheels... and some hold down bungies keep me centered on the track.

http://lh3.ggpht.com/_0jkA5M3PGcY/SvB-lTb1LkI/AAAAAAAAN64/GvvXsEvHAd0/s800/IMG_7731.JPG

Ideas came from someone over in the road forum, as well as a commercially available product. These were tested last spring... but will see some use this winter.

*have no idea if I posted these here before...

CliftonGK1
11-03-09, 12:46 PM
Very nice work! I've seen other free-motion conversions, and yours only raises one question:
Do you find that there is enough tension from the bungee cords at the very shallow angle they're attached to the floating frame? All the other conversions I've seen use a straight-pull attachment between the fixed and floating frames.
bmike
11-03-09, 12:51 PM
Very nice work! I've seen other free-motion conversions, and yours only raises one question:
Do you find that there is enough tension from the bungee cords at the very shallow angle they're attached to the floating frame? All the other conversions I've seen use a straight-pull attachment between the fixed and floating frames.


seems to be enough.
i can bottom it out on the front or back if i really get out of the saddle and sprint... not something i do though.

i need to add some small bearings to keep everything centered, at which point i might be able to switch to a linear pull setup.