Holding hub when wrenching off cassette body??

daveornee

I need an effective and non-damaging way to hold a couple of older
Shimano 7 speed hubs so that I can wrench off the cassette bodies. The
hubs are new old stock. I don't think I am dealing with a corrosion
problem as the grease is perfectly clean and the hubs have never been
used or stored in a corrosive environment. I want to take off the
cassette bodies to perform a swap of HG and UG bodies. I have the
required 10 mm Allen wrench, but I can't seem to find an effective way
to hold the hub in the vice. I am currently trying to hold the hub in
the center with wooden pine blocks that are lined with inner tubes. The
hub spins before I am able to apply sufficient torque to unscrew the
retaining fastener. Please share any effective methods.



--

dvt

daveornee wrote:

> I need an effective and non-damaging way to hold a couple of older
> Shimano 7 speed hubs so that I can wrench off the cassette bodies.

Lace it to a rim with a few spokes; hold the rim.

--
Dave
dvt at psu dot edu

MSeries

daveornee wrote:
> I need an effective and non-damaging way to hold a couple of older
> Shimano 7 speed hubs so that I can wrench off the cassette bodies. The
> hubs are new old stock. I don't think I am dealing with a corrosion
> problem as the grease is perfectly clean and the hubs have never been
> used or stored in a corrosive environment. I want to take off the
> cassette bodies to perform a swap of HG and UG bodies. I have the
> required 10 mm Allen wrench, but I can't seem to find an effective way
> to hold the hub in the vice. I am currently trying to hold the hub in
> the center with wooden pine blocks that are lined with inner tubes.
> The hub spins before I am able to apply sufficient torque to unscrew
> the retaining fastener. Please share any effective methods.

I did the same swap last autumn and had no such problems. The hub is built
into a wheel and I simply held the wheel with my left had and wellied the
socket wrench with my right. My hub was 14 years old at the time, had done
thousands of miles with only regular bearing maintenance. Are you using a
sockect wrench or a smaller allen key ? You probably know this but it is a
regular right handed thread so turn anti clockwise to undo.

I must confess I was expecting the job to be much harder than it was. My old
body came off easily and the new one went on with no compatibility problems.
I have not fitted a HG cassette yet but intend to do the 8 of 9 on 7 trick
on this and my tourer (which will actually be 8 of 9 on 6).

NB I have a used but servicable UG body on offer,

Rick Onanian

On Wed, 14 Apr 2004 16:44:53 GMT, daveornee
<usenet-forum@cyclingforums.com> wrote:
>I need an effective and non-damaging way to hold a couple of older
>Shimano 7 speed hubs so that I can wrench off the cassette bodies. The

If you won't build them into wheels for this purpose (you could just
build the wheel you'll eventually build anyway), maybe you can screw
a piece of wood to the NDS with a thin screw in each hole. Or, a
couple pieces of wood with cutouts for the inside of the hub,
properly thick to screw both DS and NDS into...
--
Rick Onanian

Paul Kopit

On Wed, 14 Apr 2004 16:44:53 GMT, daveornee
<usenet-forum@cyclingforums.com> wrote:

>I need an effective and non-damaging way to hold a couple of older
>Shimano 7 speed hubs so that I can wrench off the cassette bodies. The
>hubs are new old stock. I don't think I am dealing with a corrosion
>problem as the grease is perfectly clean and the hubs have never been
>used or stored in a corrosive environment. I want to take off the
>cassette bodies to perform a swap of HG and UG bodies. I have the
>required 10 mm Allen wrench, but I can't seem to find an effective way
>to hold the hub in the vice. I am currently trying to hold the hub in
>the center with wooden pine blocks that are lined with inner tubes. The
>hub spins before I am able to apply sufficient torque to unscrew the
>retaining fastener. Please share any effective methods.

Use about 6 spokes and lace the hub into a rim. Then use your 10 mm
hex key.

Jeff Wills

dvt <dvt_spam@psu.edu> wrote in message news:<c5jrao$1e3s$1@f04n12.cac.psu.edu>...
> daveornee wrote:
>
> > I need an effective and non-damaging way to hold a couple of older
> > Shimano 7 speed hubs so that I can wrench off the cassette bodies.
>
> Lace it to a rim with a few spokes; hold the rim.

Ditto here. I did this a little while back when I was swapping
cassette bodies between bare hubs. You need half as many spokes as a
whole wheel- 18 spokes and a 36-hole rim in my case.

Remember that you'll need the same thing to tighten the body on the
hub.

Jeff

daveornee

Jeff Wills wrote:
> dvt <dvt_spam@psu.edu> wrote in message
> news:<c5jrao$1e3s$1@f04n12.cac.psu.edu>...
> > daveornee wrote:
> >
> > > I need an effective and non-damaging way to hold a couple of older
> > > Shimano 7 speed hubs so that I can wrench off the cassette bodies.
> >
> > Lace it to a rim with a few spokes; hold the rim.
> Ditto here. I did this a little while back when I was swapping cassette
> bodies between bare hubs. You need half as many spokes as a whole wheel-
> 18 spokes and a 36-hole rim in my case.
> Remember that you'll need the same thing to tighten the body on the hub.
> Jeff



I was trying to avoid the obvious. I even bought a special set of jaw
covers with rounds in it. It came frome Sears and even has magnets in it
to keep it on the jaws. However, even with this nice extra, I still
couldn't get a good enough purchase to hold the hub in the vise. I
finally gave up, built the wheel that was to receive the cassette body
transplant, then partially laced the donor hub, and finally made the
switch. It was easier than I thought and certainly made the vise routine
look like "What were you thinking?" Thanks to all who put in their
convincing words of experienced of advice. My old 7 speed carbon fiber
bicycle is going to enjoy it's "new" HG cassette rear wheel.



--

John Everett

On Wed, 14 Apr 2004 22:26:08 GMT, Paul Kopit <p.kopit@SPAMverizon.net>
wrote:

>Use about 6 spokes and lace the hub into a rim. Then use your 10 mm
>hex key.

I've used as few as 8, but six ought to work also. Three on each
flange spaced at 120 degrees ought to do it. No need to tension the
spokes.


jeverett3<AT>earthlink<DOT>net http://home.earthlink.net/~jeverett3

charles ramsey

I have started a collection of 7 cog freehubs because they are not
making them anymore. Take some string and run it through the spoke
holes and tie the hub down to something a piece of wood with two holes
works great. You only need to use one spoke hole but one in each
flange works better. I use a steel railroad tie plate with some
newspaper between the hub and the steel. This does not damage the hub
the stresses are not that great.

Chris Zacho The Wheelman

Shimano 7 Sp. UniGlide? Are the cogs in good shape? What sizes?

I may just buy some from you!

My E-mail address is valid, if you want to right back :-3)

- -

"May you have the wind at your back.
And a really low gear for the hills!"

Chris Zacho ~ "Your Friendly Neighborhood Wheelman"

Chris'Z Corner
http://www.geocities.com/czcorner

Werehatrack

On Wed, 14 Apr 2004 16:44:53 GMT, daveornee
<usenet-forum@cyclingforums.com> may have said:

>I need an effective and non-damaging way to hold a couple of older
>Shimano 7 speed hubs so that I can wrench off the cassette bodies. The
>hubs are new old stock. I don't think I am dealing with a corrosion
>problem as the grease is perfectly clean and the hubs have never been
>used or stored in a corrosive environment. I want to take off the
>cassette bodies to perform a swap of HG and UG bodies. I have the
>required 10 mm Allen wrench, but I can't seem to find an effective way
>to hold the hub in the vice. I am currently trying to hold the hub in
>the center with wooden pine blocks that are lined with inner tubes. The
>hub spins before I am able to apply sufficient torque to unscrew the
>retaining fastener. Please share any effective methods.

Take the hub and the wrench (I assume here that it's a bit that fits
on a ratchet) and run down to the nearest car repair shop. Ask them
to use an impact wrench to undo the retainer for you. I've taken
these out with a 3/8"-drive impact while holding the hub in my hand;
no vise needed.

--
My email address is antispammed; pull WEEDS if replying via e-mail.
Typoes are not a bug, they're a feature.
Words processed in a facility that contains nuts.

A Muzi

Chris Zacho The Wheelman wrote:

> Shimano 7 Sp. UniGlide? Are the cogs in good shape? What sizes?
>
> I may just buy some from you!
>
> My E-mail address is valid, if you want to right back :-3)
>

You want UG Cassettes?
http://www.yellowjersey.org/friction.html
(bottom of page)

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