I looked up Red Line vs the Shell Darina EP. Red Line has a much
higher dropping point (basically the temp at which the stuff turns to
liquid) - 900 degrees F vs 500. The load wear index (measurement of
load bearing capacity relative to wear of the bearing surfaces) is 70
(Red Line) vs 50, with a higher number being superior.
My main concern would be over the temp, not sure how hot the front
hubs get from braking. I hope to report back on this, however, as I
have temperature indicating paint on the brake and hub pieces for this
weekend's race.
It may be that both of these are well within operating range. All the
specs are on the Shell and Red Line websites.
On Sep 21, 2010, at 11:25 AM, Greg Solow wrote:
We have been using Shell "Darina" grease for years. It was developed
by shell for lubricating the wheel bearings of the carts that carried
molten steel around in the steel foundries. They make it in Grade #1
and 2 ( this refers to the viscosity, we use Grade 2), and in EP (with
extreme pressure additives) and non-EP. We use the EP suffix grease.
We have used it for years as an all purpose grease in our shop. We buy
it in 56 lb. pails. I do not know what the minimum standard packaging
size. We do have some empty grease tubes that we could fill if someone
wants us to do so.
I am sure Shell would be happy to supply spec information on this
grease to anyone who is interested.
In an old Sunbeam workshop manual that we have, there is an
illustration of a "properly packed wheel hub". It shows the cavity
between the bearings filled with grease around its' periphery so that
the level of the grease is level with the outer races of the bearing.
This will prevent grease from migrating from within the bearing
rollers to an empty cavity leaving the bearing dry.
Greg
Solow
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