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Old April 12th 15, 04:49 PM posted to rec.bicycles.tech
Ralph Barone[_3_]
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Default Inside a Chainglider after 3500km with zero chain maintenance

Andre Jute wrote:
On Sunday, April 12, 2015 at 9:22:45 AM UTC+1, James wrote:
On 12/04/15 16:26, Ralph Barone wrote:
Lou Holtman @ wrote:
Joe Riel schreef op 12-4-2015 om 5:28:
James writes:

On 11/04/15 18:05, Lou Holtman wrote:

Hey Jay I'm not saying that anyone, Amaricans or Europians, should spend
whatever a Rohloff hub costs. I was wondering why you see more Rohloff
hubs in Europe on normal bikes (I count 5 or 6 in the bike parking at
work just on utility bikes) than in the USA. Ride whatever you like, or
can affort. I will only respond if the arguments to not buy a Rohloff
hub or an other IGH are not correct such as drag, complexity or weight etc.


Last I checked, the weight of a Rohloff hub was quite a bit more than
a rear hub with a cassette, front and rear derailleur and one
chainring. Did I not add up the weight of components correctly?

Besides the price, the wide range and rather coarse steps is a bit
off-putting. My normal road bike has a gear range (highest/lowest)
under 3, the Moulton's is 3.3. The Rohloff's range is over 5. I'd
prefer something with finer steps and smaller range. I might consider
one for the Moulton---its original Suntour shifters has remained in
friction mode 'cause the indexed never worked properly, and the shifting
on it really sucks. But the price would be hard to justify. I'd
presumably be stuck with a chain tensioner.


The 'big' 13% steps is a 'problem' for road use. Rohloff is meant for ATB
use or loaded touring were the gear range is necessary and the big steps
less important. My road bikes have derailleur system except the
winterbike where maintenance/reliability is more important.

Lou

Could you squeeze a 2 gear cluster onto a Rohloff hub? A 17-16 with a
derailleur would split the Rohloff ratios quite nicely (admittedly, by
throwing away the one main advantage of the hub).


You can get SA IGH that takes a cassette. You can then effectively do
away with the triple chainring and front derailleur.

--
JS


Barone needn't wreck the advantages of the Rohloff to get close-coupled
gear steps on a Rohloff installation. He can fit Florian Schlumpff's two
speed bottom bracket gearbox, and then still have all the Rolloff
advantages, including the capability and advantages of a totally enclosed
chain by fitting a Chainglider (which is the subject of this thread -- see first post).

Andre Jute


Except the Schlumpf comes with either a 1.65:1 or 2.5:1 ratio. To "fill in
the holes" on a Rohloff, you would be looking either for a 1:08.1 or two
1.04:1 ratios. Now it may be that the Schlumpf actually splits a ratio
further up in the box, but then you're back to that annoying "up one on
this shifter and down four on the other" that so confuses people with
derailleurs.

PS: Thread drift happens. Live with it.
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