Brake discs?

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Brake discs?

Post by shocker on Mon Oct 28, 2013 8:48 pm

What are the preferred brake disc's - floating or non- floating??

I always assumed the floating one's better,  but seem to have cured a weird feeling at the lever by sticking a spare rim with a solidly mounted disc on it scratch
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Re: Brake discs?

Post by steve on Mon Oct 28, 2013 9:10 pm

Gary who the fucks Gary? That just dont look right
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Re: Brake discs?

Post by shocker on Mon Oct 28, 2013 9:15 pm

Bog off, and just answer the question Mr bloody Caveman!!
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Re: Brake discs?

Post by Gareth Gates on Mon Oct 28, 2013 9:20 pm

float on brother !afro afro 
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Re: Brake discs?

Post by wolfy on Mon Oct 28, 2013 9:32 pm

I thought a floating disc just took heat off the hub...?
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Re: Brake discs?

Post by steve on Mon Oct 28, 2013 9:41 pm

Right then 2 SHOCKER lol! 
You paying attension? Here go,s

Motorcycle and scooters disc brakes have become increasingly sophisticated since their introduction in 1962 on the Lambretta TV175 Series 3.[citation needed] Motorcycle discs are usually stainless steel, drilled and occasionally slotted, to help remove rain water. Many motorcycle discs are of a floating design where the disc rides on small dowels and is allowed to slightly move laterally. This allows for better disc centering when used with a fixed caliper. It can also prevent heat transfer to the wheel hub under hard braking. This allows the disc to expand while heating up without increasing tension in such a way that the disc would become warped. Calipers have evolved from simple "single-piston" units to two-, four- and even six-piston items. Since (compared to cars) motorcycles have a higher centre of gravity:wheelbase ratio, they experience more weight transference when braking. The front brake(s) provide most of the required deceleration, while the rear brake serves mainly to "balance" the motorcycle during braking. A modern sports bike will typically have twin front discs of large diameter, but only a very much smaller single rear disc. This is because the rear wheel can only transfer a fraction of the stopping power due to the weight transfer to the front that occurs when braking. The same effect lets the front wheel transfer a lot more stopping power before locking up.

Wink
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Re: Brake discs?

Post by shocker on Mon Oct 28, 2013 9:43 pm

Maybe mine's either a chepo or knackered disc?
When you apply the brake, just as the it's going solid and you expect maximum braking, it then goes a bit soft at the lever and looses it's bite.
Fitted the other rim with the other type of disc, and it just bit with no weird squidgyness at the last second

Obviously need a new disc on the one rim, and was wondering what type/make was best - but it looks like a decent quality, solid type will do it Very Happy 
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Re: Brake discs?

Post by steve on Mon Oct 28, 2013 9:48 pm

Braking are suposed to be a good make.
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Re: Brake discs?

Post by wolfy on Mon Oct 28, 2013 10:05 pm

Yep warped disc Mr Gary Shocker.
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Re: Brake discs?

Post by shocker on Mon Oct 28, 2013 10:19 pm

Thank you Mr Paul Wolfy, but thought warped discs gave either a pulsing effect at the lever if slightly warped or pushed the piston's back in so far that you have to pump like buggery to make the brake if really bent??
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