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I have a pair of Hope Mini brakes, pulled in pieces. I have to assemly them, but... Could You, please help me to pair the halves of the callipers? 😕 You'll see my problem on the picture... the pistons and piston seals are different.
[url= https://picasaweb.google.com/drotos.toth/HopeMiniBrakes#5728703142789949890 ]Hope Mini Pic[/url]
This may sound obvious but can't you just offer them up to see which half goes with which?
I've tried... but there are two possible combinations!
Small goes with large. The small ones are identical, although I notice that you've two different piston types - so just match the top left with the bottom right and you'll be fine. You'll need an o-ring at the fluid port between the two halves.
Yeah, I've two differet piston types. I don't understand, because all the two are no.3 callipers. I thought i had to pair the different piston types... 🙂
They look to be the same to me. However, two have the new style of piston. I'd match top right to bottom left and put these on the front and the other two on the rear. As stated, don't forget the port o-ring.
they're both no 3 caliper halves (the small caliper half os the same through the range. Two of the halevs have the newer "double" piston (not sure if they're phenolic or if that's something else.
Personally as suggested aboive I'd pair them up by piston type. PUt the caliper with "double" pistons at the front of the bike
The two-piece pistons aren't phenolic (plastic); they're just Hope's early attempt at keeping heat from the brake fluid. Phenolic pistons didn't appear until later versions of the Mono calipers, although they can be retrofitted to the original Mini/M4 calipers.
Thanks a lot for the help!