Help With Galli Headset?

I had one of these a long time ago - haven't seen them on the market for over 20 years. I don't
think you can get them apart. I would suggest just rinsing in solvent and then regreasing.

Nick

"David White" <[email hidden]> wrote in message news:ILaxb.118198$Dw6.542944@attbi_s02...

Quoted message said:

Hello. I just got a frame which has a Galli roller bearing headset on it.

I

Quoted message said:

wonder if anyone can give me some info about it? Specifically, I would

like to

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remove the rollers (in their cages) so that I can get a look underneath at

the

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race surfaces, clean, and re-grease. I suspected that the cages would

easily

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drop out but this does not seem to be the case. I don't want to apply too

much

Quoted message said:

force and risk trashing the unit. Is there some trick to get this off? If possible, please respond
via email as well as to R.B.T.

Thanks,

David Seattle

"Gallia est omnis divisa in partes tres." - Iulius Caesar On Wed, 26 Nov 2003 23:34:00 GMT, David

White said:

Hello. I just got a frame which has a Galli roller bearing headset on it. I wonder if anyone can
give me some info about it? Specifically, I would like to remove the rollers (in their cages) so
that I can get a look underneath at the race surfaces, clean, and re-grease. I suspected that the
cages would easily drop out but this does not seem to be the case. I don't want to apply too much
force and risk trashing the unit. Is there some trick to get this off? If possible, please respond
via email as well as to R.B.T.

There were three Galli-branded headsets with which I am vaguely familiar. The "Criterium" and
"Sport" models were rebadged versions of the ubiquitous Stonglight versions of the day (early-mid
'80s). The Criterium was the functional equivalent of Stonglight's JDA9; the Sport had the same
bearing and floating race complement, but with nylon cups.

It sounds like you may have the less common "Super Criterium" model that also had roller bearings,
but whose rollers were a larger diameter and were set at a more acute angle to the load path than
those fitted in the two models above. It was described as for heavier duty applications, possibly
including tandems.

As I recall, the Super Criterium's bearing retainers integrated with their inner races (at least
with the lower bearing) and were not separable. I believe the upper and lower bearings were
specific to location and not interchangeable. Once cleaned, any irregularities of the inner race
surface should be easily detected just by turning it in your hand. The outer races were located in
the top and lower cups and, except for shape and angle of the races, are similar to what is
commonly found with most ball-bearing designs. The bearing retainers *should* just drop from their
respective cups, but perhaps will want some gentle prodding.
-------------------------------
John Dacey Business Cycles, Miami, Florida Now in our twenty-first year. Our catalog of track
equipment: eighth year online. businesscycles.combusinesscycles.comOpen ↗

John Dacey said:

It sounds like you may have the less common "Super Criterium" model that also had roller bearings,
but whose rollers were a larger diameter and were set at a more acute angle to the load path than
those fitted in the two models above. It was described as for heavier duty applications, possibly
including tandems.

I would say that you are describing the headset I have here. I was surprised by the angle at which
the rollers are set. This came off a frame that was destined for touring so that fits with the heavy
duty aspect.

Quoted message said:

As I recall, the Super Criterium's bearing retainers integrated with their inner races (at least
with the lower bearing) and were not separable. I believe the upper and lower bearings were
specific to location and not interchangeable. Once cleaned, any irregularities of the inner race
surface should be easily detected just by turning it in your hand. The outer races were located
in the top and lower cups and, except for shape and angle of the races, are similar to what is
commonly found with most ball-bearing designs. The bearing retainers *should* just drop from
their respective cups, but perhaps will want some gentle prodding.

Thanks for the info. I think I will just clean the thing out with solvent and dry with compressed
air as it sits. I will then regrease and reassemble.

David

Quoted message said:

John Dacey wrote:

-snip successful ID of odd headset-

David White said:

Thanks for the info. I think I will just clean the thing out with solvent and dry with compressed
air as it sits. I will then regrease and reassemble.

Do be careful when you spray a set of rollers with compressed air. The first time I ever saw a Dura
Ace roller bearing BB I spent a half hour on the floor with a magnet. . .

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