I check the front rotor temps and front bearing temps (measured at the outer
edge of the sheet metal hub cap) and the normal range of temperatures is
about 350 to 450 for the discs and 150 to 225 on the hub caps. This is with
an infrared thermometer. The checks are made as soon as the car gets into
the paddock so the brake rotors have had some time to cool. I think the
hubs, being a larger mass and not getting as much cooling air, might retain
their temperature quite a bit longer. I just use the temps for comparative
data to see how things are working.
Tim
-----Original Message-----
From: fot-bounces@autox.team.net [mailto:fot-bounces@autox.team.net] On
Behalf Of Mark J Bradakis
Sent: Tuesday, September 21, 2010 11:13 PM
To: 'Friends of Triumph' Triumph
Subject: Re: [Fot] Hub grease
> My main concern would be over the temp, not sure how hot the front
> hubs get from braking.
>
I did a temp profile on Killer's brakes a number of years back when
we were racing at Wendover. As I recall the caliper was about 800 - 850
degrees F, the outer portion of the disk around 900. If I recall correctly
the hub and bearing area was around 450 - 500. When I start racing
again I promise to actually write down this sort of stuff.
And based on the few times I checked with my little infrared meter
the concrete never got more than 50 - 60 degrees above air temp
when it was in full sun.
mjb.
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