Front disc brake, normal functioning and adjustement

[spetom]

I've owned 3 bikes including my current bike with front disc brakes, I notice on my last 2 bikes that while the rear drum brake wheel could be adjusted so it moved freely until the brakes are used, it seems the front wheel is never really free of the brake ever so slightly touching at all times.

Is this how discs are supposed to be? My current bike and my last bike both had discs and both operated in the same way, so the wheel turns but always has some slight resistance.

I've been searching for literature on the subject but nowhere can I find how you can adjust disc brakes.

[Paxovasa]

With floating disc's this shouldn't happen.

The pistons are not releasing properly, you need to give them a clean
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Suzuki GSF600 K3 (in the fastest colour, black).

[Ingah]

Aren't you riding a CB500? (sorry if you're not, it's hard to keep track )

If you are, it's perfectly normal (if a little bit strange as it seems like it should be an avoidable inefficiency)
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-- Ingah

[spetom]

Yea I'm on a CB 500. BTW Ingah I got those bits for the carb from davidsilvers.

I thought it was normal as I'd had the same previously with the Wuyang and CG.

[Ingah]

The jets and the washers?
Cheers, will update the website.
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-- Ingah

[Frost]

The pads get pushed into the disc by pistons which retract when the lever is eased off. The pads however aren't attached to the pistons and will therefore continue to rub a little. Pulling the brake on will result in a front wheel that's hard to turn by hand, but the momentum of the bike easily turns it. This eventually causes the pads to free off from the disc. Try going for a ride, then when coming home using the engine and rear brake to stop, then try spinning the front wheel by hand, it'll be easy.

[Teflon-Mike]