shimano nexus 8 hub gear

A few questions:

Is there any link available which explains in detail how the nexus hub
gear works? If not, how about hub gears in general, as I presume it is
not a million miles from the old Sturmey Archers?

I have seen the manual on sheldon's website for stripping down one of
these hub gears. Is there any place where this manual can be purchased
or otherwise downloaded? The manual says it is volume one. What is
volume two?

The shimano website appears to have nothing more than a fully detailed
diagram but no service instructions - I can't be 100% sure because it
keeps seizing up my computer when I go on there. Is there any other
documentation available on these gears from Shimano?

The diagram and the manual on sheldon's page recommends the use of
shimano grease and special tools, and part numbers are provided. Can
anyone recommend an internet supplier that is used to ordering
specific and relatively obscure parts off shimano - my lbs's are a
waste of time - do you think wiggle would be up to it?

Apologies for all the questions, but the hub will be due for its first
5,000 km strip and grease in a few weeks, so I want to get as much
information together as I can before I go in there, and try to limit
downtime.

Many thanks for any help.

Ray

Response to raisethe:
I have seen the manual on sheldon's website for stripping down one of
these hub gears. Is there any place where this manual can be purchased
or otherwise downloaded? The manual says it is volume one. What is
volume two?

Putting it back together. This manual is unavailable. ;-)


--
Mark, UK
"The origin of all science is the desire to know causes, and the origin
of all false science and imposture is the desire to accept false causes
rather than none, or, which is the same thing, in the unwillingness to
acknowledge our own ignorance."

On May 17, 4:59 pm, Mark McNeill wrote:
Response to raisethe:

I have seen the manual on sheldon's website for stripping down one of
these hub gears. Is there any place where this manual can be purchased
or otherwise downloaded? The manual says it is volume one. What is
volume two?

Putting it back together. This manual is unavailable. ;-)

Some time ago, I found a manual with diagrams on line for the 4 speed
Nexus hub. It was all in German. The on-line translator couldn't
handle technological terms so it was fun to read the output.

Response to raisethe:
I have seen the manual on sheldon's website for stripping down one of
these hub gears. Is there any place where this manual can be purchased
or otherwise downloaded? The manual says it is volume one. What is
volume two?

Mark McNeill wrote:
Putting it back together. This manual is unavailable. ;-)

Not to worry. As the British car manuals say, "assembly is the reverse
of disassembly".

--
Andrew Muzi
www.yellowjersey.org
Open every day since 1 April, 1971

On May 17, 10:26 pm, A Muzi wrote:
Response to raisethe:
I have seen the manual on sheldon's website for stripping down one of
these hub gears. Is there any place where this manual can be purchased
or otherwise downloaded? The manual says it is volume one. What is
volume two?
Mark McNeill wrote:
Putting it back together. This manual is unavailable. ;-)

Not to worry. As the British car manuals say, "assembly is the reverse
of disassembly".


Or "installation is the reverse of removal".....eeekkkkkk!

I will never buy another Brit car
I will never buy another Brit car
I will never buy another Brit car

(must keep repeating this to self until I am not longer tempted by the
very nice MGA I saw for sale.........)

"A Muzi" wrote in message
...
Response to raisethe:
I have seen the manual on sheldon's website for stripping down one of
these hub gears. Is there any place where this manual can be purchased
or otherwise downloaded? The manual says it is volume one. What is
volume two?

Mark McNeill wrote:
Putting it back together. This manual is unavailable. ;-)

Not to worry. As the British car manuals say, "assembly is the reverse of
disassembly".

--
Andrew Muzi
www.yellowjersey.org
Open every day since 1 April, 1971
With no offense to the OP, saw a show on the military channel about tanks -
one of the segments showed an enlisted man who'd just removed one link of a
track, and asked his commander (Sergeant?) how to put in the replacement.
The commander said, "You need a special tool for that, common sense. You
may not have been issued that yet."
Kerry

In article ,
A Muzi wrote:

Response to raisethe:
I have seen the manual on sheldon's website for stripping down one of
these hub gears. Is there any place where this manual can be purchased
or otherwise downloaded? The manual says it is volume one. What is
volume two?

Mark McNeill wrote:
Putting it back together. This manual is unavailable. ;-)

Not to worry. As the British car manuals say, "assembly is the reverse
of disassembly".

You're doing well if that's what it says. My father's 1958 AJS user's
manual described the bus routes that would take you to the factory.

I am not making this up,

--
Ryan Cousineau http://www.wiredcola.com/
"I don't want kids who are thinking about going into mathematics
to think that they have to take drugs to succeed." -Paul Erdos

in message . com, raisethe
') wrote:

A few questions:

Is there any link available which explains in detail how the nexus hub
gear works? If not, how about hub gears in general, as I presume it is
not a million miles from the old Sturmey Archers?

It's not a million miles from. They're all epicyclics. Any single epicyclic
train gives three potential speeds: cage locked to shaft, shaft driven,
cage driven. Hubs with more than three speeds have more than one epicyclic
train. A hub with two trains will have five potential gears, because
the 'cage locked to shaft' gear is the same for both trains; a hub with
three trains, seven gears. I don't personally understand how eight gear
hubs work...

General explanation he
http://en.wikipedia.org/wiki/Epicyclic_gearing

What's tricky - and gets trickier as the number of trains goes up - is how
you switch between the different gears.

--
(Simon Brooke) http://www.jasmine.org.uk/~simon/

I'm fed up with Life 1.0. I never liked it much and now it's getting
me down. I think I'll upgrade to MSLife 97 -- you know, the one that
comes in a flash new box and within weeks you're crawling with bugs.

Simon Brooke wrote:
in message . com, raisethe
') wrote:

A few questions:

Is there any link available which explains in detail how the nexus hub
gear works? If not, how about hub gears in general, as I presume it is
not a million miles from the old Sturmey Archers?

It's not a million miles from. They're all epicyclics. Any single epicyclic
train gives three potential speeds: cage locked to shaft, shaft driven,
cage driven. Hubs with more than three speeds have more than one epicyclic
train. A hub with two trains will have five potential gears, because
the 'cage locked to shaft' gear is the same for both trains; a hub with
three trains, seven gears. I don't personally understand how eight gear
hubs work...

General explanation he
http://en.wikipedia.org/wiki/Epicyclic_gearing

What's tricky - and gets trickier as the number of trains goes up - is how
you switch between the different gears.

I've the 7 gear version that must have done c 20k. I was worried it
might be getting dry so I took the gear train out of the hub (the ball
races are caged) and cleaned it with solvent. Whilst doing that I
'brushed' off a cam toggle and had a little trouble find where it had
come from and getting it back. I regreased it with special grease that
you can buy, and after a little trouble with linkage all is now fine.

I did have an 'exploded' diagram, but hoped it wouldn't explode.

I don't think I'd take it further apart with the 100% expectation of
getting it back together and working in all gears.

Jim Chisholm

raisethe wrote:
A few questions:

Is there any link available which explains in detail how the nexus hub
gear works? If not, how about hub gears in general, as I presume it is
not a million miles from the old Sturmey Archers?

I have seen the manual on sheldon's website for stripping down one of
these hub gears. Is there any place where this manual can be purchased
or otherwise downloaded?

You could try this link

http://www.bruegelmann-shop.de/shima...E/TN_10_EN.PDF

HTH

--

Geoff