[Mgs] Moss Big Brake Kit
WSpohn4 at aol.com
WSpohn4 at aol.com
Thu Aug 2 11:43:16 MDT 2007
In a message dated 8/2/2007 10:14:59 A.M. Pacific Daylight Time,
doddk at mossmotors.com writes:
Comment: No stock engined MGB needs anything more than properly
serviced stock brakes.
And they also thought you couldn't drive faster than 40 mph or you would
asphyxiate. Sorry, but this comment is hogwash. Today's bargain basement
tires have a lot more grip than the original design specification and
many owners are going to 15" wheels specifically to be able to use high
grip modern performance tires. Our cars are on the road with vehicles
that have insanely good brakes so if I'm cruising at 70 mph I'd like to
be able to stop in an emergency without rear ending the modern car in
front of me. For safety sake any brake improvement is a positive thing.
____________________________________
Uh, Kelvin, I think that the hogwash comment applies to your statement and
my original one is accurate. If you can lock the wheels with reasonable feel
and modulation and you can do it repeatedly from high speed, no amount of
upgrading, including fitting Formula 1 brakes is going to improve the situation,
though it will certainly lighten your wallet.
MGBs were always built to function to100 MPH so your comment about 40 MPH is
gratuitous.
The fact that modern rubber has better grip enhances braking, it doesn't
challenge the braking components. With dead stock perfectly functioning original
components (I keep repeating this because so many people seem to switch from
thrashed original components that are hardly working and then swear that all
the improvement was due to the new brakes, which hardly gives the original
equipment its due), modern rubber will give better braking than in the 1960s.
The other area where braking technology has improved considerably is brake
pad material. Use a decent pad that is specified for the sort of driving you
are going to do. Don't put in a stock street pad and then complain if it
fades when you come racing down a mountain.
If you want to be ready for extreme use, put in some modern carbon-Kevlar
pads. Unlike the Good Old Days, a real racing pad won't decline to stop with
the first couple of tries, that is they don't just work when they are up to
operating temperature, they work pretty darned well from the first stop.
If you want more details, see my article on braking equipment scheduled to
be published in the September issue of the Namgar magazine.
There are some cars that have substandard brakes for modern driving. I would
include just about any front drum brake car like the MGA 1500 in this, as
well as some disc braked cars with inadequate brake specification - Mini
Coopers, for instance.
MGBs are not among these, and SCCA racers have been running for years with
stock equipment, optimised by attending to selection of pad material and
suitable cooling measures.
I understand that many people want to convert to neat brakes, but let's not
pretend that these conversions are necessary for safe braking performance.
Bill S.
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