Single Sprocket freewheels

Ryan Golbeck said:

Hey all,

I've come across some BMX style single sprocket freewheels, and I'm
thinking of converting a mountain bike to single speed for the winter.
But the freewheels don't seem to have any mechanism to remove them.
Is this common? Is there something I can do so that I might be able
to remove it from my hub?

Its just a cheap wheel, so I don't mind permanently attaching one of
these to it, but it would be nice to be able to remove it.

Many of them take a splined Shimano cassette remover these days. There
are a multitude of alternative designs including removers with 2 or 4
dogs to engage the freewheel.

On 14 Nov 2004 13:58:42 -0500, Ryan Golbeck <[email hidden]>

Quoted message said:

Hey all,

I've come across some BMX style single sprocket freewheels, and I'm
thinking of converting a mountain bike to single speed for the winter.
But the freewheels don't seem to have any mechanism to remove them.
Is this common? Is there something I can do so that I might be able
to remove it from my hub?

Its just a cheap wheel, so I don't mind permanently attaching one of
these to it, but it would be nice to be able to remove it.

Thanks,
ryan

I am not familiar with all the BMX stuff out there, but Shimano and
others use a 4-prong remover. ACS may have one that uses a Shimano BB
spline tool?

You can see the opening in some of these-

http://sheldonbrown.com/harris/singlespeed.html#freewheels

Zog The Undeniable said:

Many of them take a splined Shimano cassette remover these days.
There are a multitude of alternative designs including removers with 2
or 4 dogs to engage the freewheel.

I think this one is pretty old. I'm not sure what you mean by dog,
though. I put a picture of it up at [1], it looks like somehting
might be able to fit in the two round holes on each side. But they
aren't very deep.

Thanks for the help,
ryan

[1] http://www.student.cs.uwaterloo.ca/~rmgolbec/freewheel.jpg

On 14 Nov 2004 15:07:00 -0500, Ryan Golbeck <[email hidden]>

Quoted message said:

Zog The Undeniable said:

Many of them take a splined Shimano cassette remover these days.
There are a multitude of alternative designs including removers with 2
or 4 dogs to engage the freewheel.

I think this one is pretty old. I'm not sure what you mean by dog,
though. I put a picture of it up at [1], it looks like somehting
might be able to fit in the two round holes on each side. But they
aren't very deep.

Thanks for the help,
ryan

[1] http://www.student.cs.uwaterloo.ca/~rmgolbec/freewheel.jpg

Those two holes are to unscrew the cover plate, giving you access to
the pawls and bearings inside. *NOT* recommended that you open it
except for fun.

Turn it over....

http://www.albes.com/index.asp?PageAction=VIEWPROD&ProdID=210

Looks like it needs one of these-

http://www.parktool.com/tools/FR_8.shtml

Dan Daniel said:

Those two holes are to unscrew the cover plate, giving you access to
the pawls and bearings inside. *NOT* recommended that you open it
except for fun.

Turn it over....

http://www.albes.com/index.asp?PageAction=VIEWPROD&ProdID=210

Looks like it needs one of these-

http://www.parktool.com/tools/FR_8.shtml

The other side is less interesting then the front, that's why I didn't
post it before, but I put its picture up to [1]. It doesn't look like
the image you posted, there are no slots for any sort of removal tool
it seems. I guess some could be machined in?

Thanks,
-ryan

[1] http://www.student.cs.uwaterloo.ca/~rmgolbec/freewheel2.jpg

On 14 Nov 2004 15:07:00 -0500, Ryan Golbeck <[email hidden]>

Quoted message said:

Zog The Undeniable said:

Many of them take a splined Shimano cassette remover these days.
There are a multitude of alternative designs including removers with 2
or 4 dogs to engage the freewheel.

I think this one is pretty old. I'm not sure what you mean by dog,
though. I put a picture of it up at [1], it looks like somehting
might be able to fit in the two round holes on each side. But they
aren't very deep.

Thanks for the help,
ryan

[1] http://www.student.cs.uwaterloo.ca/~rmgolbec/freewheel.jpg

I'm not sure from your photo, but I think I might be seeing one notch
under the "R" in BRAND and a second above the "C" in CO. on the
opposite side? If so, that freewheel might take the old SunTour
2-notch BMX freewheel tool:

http://www.biketoolsetc.com/index.cgi?id=55295088700&d=single&c=Tools&sc=Freehubs%20and%20Freewheels&tc=Freewheel%20Removers-Notched&item_id=ST-TA101

or

http://tinyurl.com/63drl

Ryan Golbeck <[email hidden]> wrote in message news:<[email hidden]>...

Quoted message said:

Zog The Undeniable said:

Many of them take a splined Shimano cassette remover these days.
There are a multitude of alternative designs including removers with 2
or 4 dogs to engage the freewheel.

I think this one is pretty old. I'm not sure what you mean by dog,
though. I put a picture of it up at [1], it looks like somehting
might be able to fit in the two round holes on each side. But they
aren't very deep.

Thanks for the help,
ryan

[1] http://www.student.cs.uwaterloo.ca/~rmgolbec/freewheel.jpg

The two round holes are for disassembling the freewheel. There should
be notches (dogs) in the threaded portion for a remover. Since these
are not visible, I would guess that they have been stripped off.

Jeff

Ryan Golbeck said:

I've come across some BMX style single sprocket freewheels, and I'm
thinking of converting a mountain bike to single speed for the winter.
But the freewheels don't seem to have any mechanism to remove them.
Is this common? Is there something I can do so that I might be able
to remove it from my hub?

Its just a cheap wheel, so I don't mind permanently attaching one of
these to it, but it would be nice to be able to remove it.

The classic design, before Suntour's 4-notch EZ-Off which is
widely copied now, has no reasonable nondestructive removal
procedure.

Some have very small nicks in the body which can be struck
firmly with a cold chisel to break them free.

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

Quoted message said:

Zog The Undeniable said:

Many of them take a splined Shimano cassette remover these days.
There are a multitude of alternative designs including removers with 2
or 4 dogs to engage the freewheel.

Ryan Golbeck said:

I think this one is pretty old. I'm not sure what you mean by dog,
though. I put a picture of it up at [1], it looks like somehting
might be able to fit in the two round holes on each side. But they
aren't very deep.

Quoted message said:

[1] http://www.student.cs.uwaterloo.ca/~rmgolbec/freewheel.jpg

The two indentations open the cover plate - which you do
not want to do. (Anticlockwise if you're hellbent)

This standard model freewheel isn't a BMX component. It's a
roadster freewheel and doesn't have removal provision. They
are used until failure and then broken for removal.

ps - that model is current - not necessarily old.
--
Andrew Muzi
www.yellowjersey.org
Open every day since 1 April, 1971

Quoted message said:

On 14 Nov 2004 15:07:00 -0500, Ryan Golbeck <[email hidden]>

Quoted message said:

I think this one is pretty old. I'm not sure what you mean by dog,
though. I put a picture of it up at [1], it looks like somehting
might be able to fit in the two round holes on each side. But they
aren't very deep.
[1] http://www.student.cs.uwaterloo.ca/~rmgolbec/freewheel.jpg

Dan Daniel said:

Those two holes are to unscrew the cover plate, giving you access to
the pawls and bearings inside. *NOT* recommended that you open it
except for fun.
Turn it over....
http://www.albes.com/index.asp?PageAction=VIEWPROD&ProdID=210
Looks like it needs one of these-
http://www.parktool.com/tools/FR_8.shtml

That's a different model than the OP linked.

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

A Muzi said:

This standard model freewheel isn't a BMX component. It's a
roadster freewheel and doesn't have removal provision. They
are used until failure and then broken for removal.

But, but, you'd have to tear it apart if you broke a spoke. That doesn't
seem reasonable.

--

David L. Johnson

__o | If all economists were laid end to end, they would not reach a
_`\(,_ | conclusion. -- George Bernard Shaw
(_)/ (_) |

Quoted message said:

A Muzi said:

This standard model freewheel isn't a BMX component. It's a
roadster freewheel and doesn't have removal provision. They
are used until failure and then broken for removal.

David L. Johnson said:

But, but, you'd have to tear it apart if you broke a spoke. That doesn't
seem reasonable.

I just today replaced a spoke without removing the freewheel
or the tire. Slip the nipple in by threading it backwards
on a spoke, peel the tire to one side, push the nipple in
and then unscrew your spoke. Insert the replacement spoke
through the root of a freewheel tooth. It doesn't require
much of a curve.

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

Ryan Golbeck said:

I think this one is pretty old. I'm not sure what you mean by dog,
though.

From dictionary.com:

"A piece in machinery acting as a catch or clutch; especially, the
carrier of a lathe, also, an adjustable stop to change motion, as in a
machine tool."

Ryan Golbeck said:

Zog The Undeniable said:

Many of them take a splined Shimano cassette remover these days.
There are a multitude of alternative designs including removers with 2
or 4 dogs to engage the freewheel.

I think this one is pretty old. I'm not sure what you mean by dog,
though. I put a picture of it up at [1], it looks like somehting
might be able to fit in the two round holes on each side. But they
aren't very deep.

You can use these with a hammer and punch (usually LH thread) to unscrew
the bearing race. The freewheel will fall apart, and the remaining bit
will respond to treatment with vise or pipewrench

--
---
Marten Gerritsen

INFOapestaartjeM-GINEERINGpuntNL
www.m-gineering.nl