Comments on: NuVinci Bicycle CVT

By: 500group

500group — Sun, 22 Nov 2009 08:35:03 +0000

the bottom line is its just physics, the nu-vinci will always require more pedalling effort and that is a big deal for certain conditions, for a trip around the corner not a problem for a long ride big problem
so the nu vinvi may find an application for casual biking over a short distance
it may be more reliable who know although the plates need constant pressure on them and may be prone to slippage up hills etc certainly deraillers are horrible when it comes to reliability also

By: 500group

500group — Sun, 22 Nov 2009 07:53:24 +0000

to recap basic physics:

balls, cones, toothless belts, variators, cvt’s. all have HIGH FRICTION and are no good for pedal power

chains or toothed belts, gears and deraillers all have LOW FRICTION and are great for pedal power

By: 500group

500group — Sun, 22 Nov 2009 07:47:23 +0000

additionally deraillers change gears under constant load, ie your pedalling up hill and you dont have to back off to go to a lower gear VERY IMPORTANT

deraillers chaind and gears with their service requirements and complications are by far still the best soloution

By: mwehlou

mwehlou — Sun, 22 Nov 2009 07:46:42 +0000

@500group: boy, am I glad I didn’t know this thing couldn’t work before I went out for an hour long ride today on my spanking new Crescent Nuvinci. I’m no expert, but there was not the slightest sign of the extra friction you guys claim. No slipping. I never noticed the weight either (but now you said it’s so heavy, I’ll think about it all the time). For all others, rest assured, it works. The “high friction” if it’s there at all, is much too small to be noticed even by my lazy legs.

By: JaleelJohanson62

JaleelJohanson62 — Sun, 22 Nov 2009 07:22:33 +0000

Sounds like most of the friction is coming from the folks here? LOL

By: phreezerburne

phreezerburne — Sun, 22 Nov 2009 07:21:00 +0000

wouldnt you have to keep calabrating it to keep the balls from slipping?

By: andythedarkone1982

andythedarkone1982 — Sun, 22 Nov 2009 06:56:11 +0000

nice idea, the basic design is simple in mechanical terms, but unless the internal parts are made from very strudy components, it would wear out very quickly!

By: ovelho1

ovelho1 — Sun, 22 Nov 2009 06:30:38 +0000

may i construct this machine?

By: wellsinmud

wellsinmud — Sun, 22 Nov 2009 06:26:24 +0000

thats fucking awesome,, damn i love innovation

By: atomichurley

atomichurley — Sun, 22 Nov 2009 06:15:05 +0000

this is great