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Re: Leaking caliper
Posted: Sat Jul 08, 2017 9:11 am
by SteveD
THOSE SEALS AROUND...oops,...the pistons can deteriorate and split. Probably worth changing them every 15 years or so!
Re: Leaking caliper
Posted: Sun Jul 09, 2017 1:42 am
by Zombie Master
SteveD wrote: ↑Sat Jul 08, 2017 9:11 am
THOSE SEALS AROUND...oops,...the pistons can deteriorate and split. Probably worth changing them every 15 years or so!
Mine were manufactured in 1983 and look perfect.
Re: Leaking caliper
Posted: Sun Jul 09, 2017 3:51 am
by barryh
I'm still on original 79 seals and they seem fine. There is still enough hysteresis in the rubber to pull the pistons back and have the wheel spin free.
Re: Leaking caliper
Posted: Sun Jul 09, 2017 12:51 pm
by Zombie Master
barryh wrote: ↑Sun Jul 09, 2017 3:51 am
I'm still on original 79 seals and they seem fine. There is still enough hysteresis in the rubber to pull the pistons back and have the wheel spin free.
This world has too much hysterics!
Do you have a dual disk set up?
Re: Leaking caliper
Posted: Sun Jul 09, 2017 12:58 pm
by barryh
Single disc with Ate caliper.
Can't see why the seals shouldn't work the same on dual disc. Only difference is they push twice as much fluid back into the master cylinder reservoir.
Re: Leaking caliper
Posted: Sun Jul 09, 2017 8:31 pm
by Zombie Master
barryh wrote: ↑Sun Jul 09, 2017 12:58 pm
Single disc with Ate caliper.
Can't see why the seals shouldn't work the same on dual disc. Only difference is they push twice as much fluid back into the master cylinder reservoir.
That's a much different caliper, and with two discs rubbing I would imagine any drag would be increased.
Re: Leaking caliper
Posted: Mon Jul 10, 2017 6:12 am
by barryh
It's a dual piston Ate caliper so very similar to a Brembo.
If there is drag from the pads then I suppose dual discs are bound to make it worse. If the drag is zero then 2 x zero is still zero. That wasn't my wheel spinning video but mine does behave the same and will spin for close to a full minute so zero drag or close to zero drag is possible.
Re: Leaking caliper
Posted: Mon Jul 10, 2017 6:42 am
by ME 109
Zombie Master wrote: ↑Sun Jul 09, 2017 8:31 pm
That's a much different caliper, and with two discs rubbing I would imagine any drag would be increased.
Our brakes need all the help they can get.
Re: Leaking caliper
Posted: Mon Jul 10, 2017 12:20 pm
by Rob
barryh wrote: ↑Mon Jul 10, 2017 6:12 am
It's a dual piston Ate caliper so very similar to a Brembo.
If there is drag from the pads then I suppose dual discs are bound to make it worse. If the drag is zero then 2 x zero is still zero. That wasn't my wheel spinning video but mine does behave the same and will spin for close to a full minute so zero drag or close to zero drag is possible.
That was my '79 R65 in the video, Barry.
I just think those '79s were freaks of nature.