New CVT hub

In article <[email hidden]>,

Ted Bennett said:

http://www.fallbrooktech.com/default.asp

Quoted message said:

Okay, but what is the range? Surely someone at Fallbrook knows! The
Rohloff has a range of 527%, the Shimano 8-speed Nexus has a range of
307%. I would be very interested in the efficiency and how it was
determined; it's obviously important in a human-power application.

i have no more info, but there was a note in cyclingnews' coverage
of interbike last year:
http://www.cyclingnews.com/tech/2005/shows/interbike05/?id=results/interbike0525

they mention 400%, but not much about the efficiency of the unit.

ratio range is 3.57

a meaningful number for efficiency is difficult even for a chain as it
involves many variables (chain speed etc.) and they haven't released
any information here

Ted Bennett said:

http://www.fallbrooktech.com/default.asp

As usual, the site provides plenty of breathless prose, but is very
short, even evasive, on the important details, such as:

Quoted message said:

What is the ratio range and efficiency of the NuVinci CVP hub?

From bench and road testing by potential consumers and industry experts, the
NuVinci CVP compares favorably with the internally geared hubs on the market
today and has the same or better ratio range.

Okay, but what is the range? Surely someone at Fallbrook knows! The
Rohloff has a range of 527%, the Shimano 8-speed Nexus has a range of
307%. I would be very interested in the efficiency and how it was
determined; it's obviously important in a human-power application.

Quoted message said:

How much does the NuVinci CVP Hub weigh?

Weights will vary between model and application. The first model is designed
for cruiser/comfort and commuter bicycles. The weight of the NuVinci rear hub
is greater than that of a rear derailleur drivetrain. However, multiple chain
rings, a cassette and dual shifters are no longer required.

Other manufacturers seem to be able to weigh their products, and even
report that weight.

Quoted message said:

What will a NuVinci CVP hub cost?

Fallbrook is dedicated to developing affordable advanced techology.
Fallbrook's licensees will determine the cost of the NuVinci CVP. Prices are
expected be competitive with internally geared hubs currently on the market.

Sigh. Competitive with the Rohloff(US$1100), or with the Shimano
Nexus(US$200), or with the Sturmey-Archer (US$100)?

I would be interested in some comments from others in this group on the
mechanical aspects of the CVT hub.

Allow me to translate for the marketing guys:

Quoted message said:

Quoted message said:

What is the ratio range and efficiency of the NuVinci CVP hub?

Not sure yet. If they go cheap and not enough people won't buy it. If it has
the magic number ratio and costs too much, it wont sell either.

Quoted message said:

Quoted message said:

How much does the NuVinci CVP Hub weigh?

We don't know yet. If it's too heavy and cheap, people won't buy it. If it's
light but costs too much, people won't buy it either.

Quoted message said:

Quoted message said:

What will a NuVinci CVP hub cost?

Read the last two answers.

H. Guy said:

In article <[email hidden]>,

Ted Bennett said:

http://www.fallbrooktech.com/default.asp

i have no more info, but there was a note in cyclingnews' coverage
of interbike last year:
http://www.cyclingnews.com/tech/2005/shows/interbike05/?id=results/interbike0525

they mention 400%, but not much about the efficiency of the unit.

The website's other page (http://www.fallbrooktech.com/03_Bicycle.asp)
makes a point of touting its use for "pleasure/commuter" applications.

I think they know it'll never be good enough for any kind of race.

--Blair

Blair P. Houghton said:

The website's other page (http://www.fallbrooktech.com/03_Bicycle.asp)
makes a point of touting its use for "pleasure/commuter" applications.

I think they know it'll never be good enough for any kind of race.

Who cares? The kinds of cars most people drive would never be good for
any kind of race either. That doesn't keep them from outselling race
cars by a thousandfold.

The key question (which Fallbrook haven't managed to answer in the
couple of years they've been teasing the public) isn't whether it's
good for racing, but simply whether it's good.

Chalo