DRILLED BACKING PLATES

[51deluxe]

so what do you think there an upgrade from a 320i i drilled holes in them to help with cooling and plus it looks cool.

[c.d.iesel]

it is cool - and does offer cooling to both brakes and wheel bearings.

BUT when it rains - you need to plan ahead with a light ride of the brakes BEFORE your REALLY NEED THEM to wipe away the water that will enter.

Now tack on small air scoops to catch incoming air

and your a Vintage Motorcycle. Bob's yer Uncle !

....hairs some more brake cooling ideas :

http://atspeedimages.com/search.php?s=brake

......." The cooling scoops on the brake drums had the effect of sending large amounts of water into the MGA brakes, which meant that the drivers had to remember to allow increased braking distances"

[Guest Anonymous]

Unless the point is to minimize unsprung weight, it might be just as effective to "slot" the plate and form/bend the slots either to duct the air in or out of the drum area. (See: food grater)

[TobyB]

When I raced with drums, the PO had welded on 2 smallish tubes

and ducted air in at the leading edge ofeach shoe.

There were 2 matching holes for exhaust at the trailing edge.

Whenever I knocked the ducts off, I had rear brake problems,

but with the ducts, things worked fine.

t

[slowpoke]

Toby, 

 

i know, long time, but got pics?

[kbmb02]

Like this (ish), @TobyB?

 

 

Edited January 19, 2020 by kbmb02
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[kbmb02]

Another method, same as the original post back in 2009.

 

With either method, we never have issues with rear brakes (short races, for the most part). -KB

 

Edited January 19, 2020 by kbmb02
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