Date: 18 Mar 1996
From: hajo@quijote.in-berlin.de (Hans-Joachim Zierke)
Newsgroups: rec.bicycles.tech
Subject: Re: Lubricating a Sachs Freewheel

RR Hunt writes:

> Does anyone know how to get to the lube port on a Sachs Freewheel?  I've
> already removed the top two cogs (which I suppose operate as a sort of
> lockring), but the 5 remaining cogs seem fixed to the freewheel
> mechanism--and its my suspicion that the lubrication port is somewhere
> under those 5 cogs.  Any help appreciated. bob.


Both the 7-speed and the 8-speed have three screwed sprockets. The first 
screwed at, the second and third screwed on. One more removed sprocket will
make you happy.

The oil hole is there since 1993 or '94. Old ones don't have it. You may 
tap me on the shoulder for it, since I could convince the chief developer 
to put it there, when I met him on a trade fair. "Drilling a small hole 
can't add a lot of cost, if done before heat treatment, come on..."

hajo

From: jbrandt@hpl.hp.com (Jobst Brandt)
Newsgroups: rec.bicycles.tech
Subject: Re: SunTour freewheel lubrication
Date: 31 Mar 2000 17:46:52 GMT

Brian Oberbeck writes:

> I have an older Suntour Winner Pro freewheel that I would like to
> lubricate.  I see a very small hole in the threading of the body.  I
> recall being told not to inject grease into a freewheel.  What
> lubricant do I use, and what tool or how do I inject into the
> freewheel?  Also does this push out the old/contaminated lubricant
> through the front of the freewheel?

The reason for this on the New Winner Pro is that it has such tight
labyrinth seals that lubrication is impossible without an oil port or
immersion (a mess).  Grease does not belong in a freewheel.  Lubricate
it with conventional motor oil, no more viscous than 30W.  This type
ratchet doesn't make audible sound anyway.  It was ratchet noise that
got people to grease freewheels in the first place, but it interferes
with proper ratchet engagement and works miserably in near freezing
temperatures.

Jobst Brandt      <jbrandt@hpl.hp.com>