I was noting a general trend, not speaking specifically of the nuvinci...for all I know about it, this contraption may suck totally. If not now, at some point soon a viable non-gear torque/rpm converter will come to market as a complement for the chain-less drivetrains available.Dude, the nuvinci isn't lighter, it's about twice heavier then a comparable geared hub. As for being stronger and lower maintenance, where did you read that? I've not seen anything regarding it's maintenance requirements, and to my knowledge it's not been out long enough for it's reliability to be compared.
Exclusive Alloy Shell DC Brushless Geared Hub Motor
Good question! I think it might well do-so. Here's why:xyster wrote:Is the bicycle nuvinci stout enough to handle 500+W motor torque?
Thanks for your words and the pointer. Here, from their LEV page,Well if not, the company has ones that surely are:
Though widespread adoption will take awhile, decades perhaps, the CVT seems superior to trannies in many ways. Eventually we'll all be driving/riding some kind of continuously variable torque/rpm converter whether automatic, or manual "shifting" like the nuvinci.
They could probably use a lighter metal instead, like titanium. Probably they're looking to keep the price down at first to spur adoption, coffer the capital, so they can manufacture lighter, higher-end units later.I don't see how they can not be heavy, what with the steel balls and the steel disks, and probably more steel than that,
owing to the need for great contact pressure of the rolling surfaces.
I'll take you up on that since I have put nothing on the table to lose. And instead of your life, if you lose I'll take your oath of fealty and a lifetime of slavery (don't worry, just household chores and stuff...nothing weird or too de-humanizing)In this case I'd wager my life, that only ball bearing-hard steel will do.
You have a point. But we all know that just lately you've also gotten on a sort of shaving jagMathurin wrote:Nuvinci: 350% variation, ~4.2kg, max torque 130 Nm
Rohloff: 526% on 14 speeds, ~1.8kg, max torque 250 Nm
Nexus8: 307% on 8 speeds, ~1.6kg, max torque ???
That Izip could have been about 2kgs lighter...
I shall not let my fanbase ponder such questions anylonger.Q: Do you shave balls?
And how. It's not a Gman kind of place. In fact it's almost not a place at all.PS: Leave your dignity at the door all who dare find out.
April 1, 2008
NuVinci Warranty Dept.
Our inspection of your returned transmission shows that the unit was abused by such overloading as is impossible to create by manual pedaling of a bicycle.
When we see this sort of overheating (evidenced by blue balls), we know we're dealing with another ebiker.
Your warranty claim is therefore denied.
NuVinci Customer Satisfaction Team Member
Look, Kinko I am not a metallurgist either, and I know nothing of specialty balls aside from those rolled in leather bars.xyster wrote:Reid, I'm still awaiting your submission for losing the bet. See last post, previous page, ceramic balls. Time is money! Interest is accruing! Hop to it, buddy or I'll dock your zero pay, making you an indentured servant yoked to debt for life!
Oh wait, if you're anything like most Americans, you're probably yoked to debt for life anyway.
See, this slavery arrangement won't be that different
Crudcakes, looks like I'm doing the dishes again tonight.But such bearings are for very light loads.
Ah, yeah,TylerDurden wrote:Here come the Cyclone Yakuza... I did so enjoy the poems. Oh, well.
Of course, another alternative might be to draw-up a nice plug-n-play dual-freewheel. That might actually be patent worthy.