Brembo caliper adapters

Checking with printed plastic is a great idea. I have seen clearance issues with spokes on, funnily enough, spoked wheels.
 
steph said:
Here you go Roland
Thanks to Michael 😘

B + C = 38,5mm

(B and C piston centered)
B = 19
C = 19,5mm

Pad material width = 55,5mm (not 47mm)
Pad material height (middle) = 38,5mm
Pad material height (sides) = 35mm

There are no signs of wear left by the disc, as the entire surface of the brake pad is in contact with it.

View attachment 108491
Click to expand...

Found this on the Brembo web site

Plaquette Brembo 07BB1410

La plaquette 07BB1410 est synonyme de fiabilité
www.bremboparts.com www.bremboparts.com

1792686675596.png
 
my 15°version as shown is at 295g.
at a density of 2.71.

It still has some unnecessary material, perhaps i shave another 20g.
Could result in ... 275g?

And it is more organic 😁
 
There's not much in the way of tensional or bending forces involved, mainly compression. At a guess, the mounting bolts are under more stress than the actual bracket. Reckon you'd get away with not much more than a skeleton if made from decent material. Looking at contemporary racing machines of the pre-titanium and carbon fibre era, it's amazing what aluminium alloy can do when not building to ten- or twentyfold safety margins.

I haven't actually calculated it, I'll leave that to our learned member Cam. ;) Pretty confident though, compared to some of the cazy stuff I've made for myself, this design is pretty conservative.
 
You can start with F= M x a where M ist the mass of the bike lets say 200 Kg, a is braking acceleration, which ist about 1,5 g or 15 m/ s2.
So force at the bottom of the front wheel is 200kg x 15 m/ s2 approx. 3000N

Then you compare the lever length wheel dia/ brake dia which is approx. 2, but you have two discs, so it will be half of the amount.
The result is 3000 N x 2 : 2 which is 3000 N at the brake caliper- approximately.

🫣
 
When I gave my perspex template to my mate Dirk to convert into Ally I was very surprised how much material he removed. Personally, not being an engineer my gut feeling it was too light.
Being German and a pretty bloody smart engineer he assured me it was fine. 12 years later and lots of track time they have stood the test of time so I'm pretty comfortable with the results.
When I get back home Im going to weight them out of interest.
 
motoddrob said:
When I gave my perspex template to my mate Dirk to convert into Ally I was very surprised how much material he removed. Personally, not being an engineer my gut feeling it was too light.
Being German and a pretty bloody smart engineer he assured me it was fine. 12 years later and lots of track time they have stood the test of time so I'm pretty comfortable with the results.
When I get back home Im going to weight them out of interest.
Click to expand...
Weight's not everyting Rob. Cross-sectional area and direction of force mostly dictate where material can be removed... or best left as is!

piet
 
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