isitafox Posted August 17, 2014 Report Share Posted August 17, 2014 After months of my front brake not self adjusting I finally decided to take it off to have a look (was gonna rebleed to see if that helped) I found that one of the pistons has corroded so when you pull the lever it only came out a tiny bit, this made the lever feel like it was squeezing onto the rotor as it stopped about a centimeter from the bar which is obviously why the pads weren't self adjusting like they should. Anyway, my point is does anyone know if Hope would take it as a warranty repair? The corrosion is purely incidental and I'm pretty sure it shouldn't happen, if I swap the piston it's going to end up costing me over £30 (may as well change both pistons at once so I know they're both sound, also may as well replace seals, will need tool to remove bore cap and then need some fluid) so thought it's worth an ask knowing how good their after sales is. Final note that the brake is 2nd hand but I know this doesn't usually cause any problems. EDIT: Just emailed Hope to see what they say, gonna leave this here so I can update the reply I get in case anyone else gets the same problem in future. Quote Link to comment Share on other sites More sharing options...
psiron Posted August 18, 2014 Report Share Posted August 18, 2014 I've had the same problem but not with just Hope trialzone the Avids on my Enduro did the same thing and now i regularly apply a small amount of copperslip to the pistons which seems to stop them corroding. Basically, i remove one of the pads squeeze the lever as much as i dare exposing the piston surface then apply the CS and then repeat for the other side. I hope you have luck with your warranty claim. Personally i think its a price we have to pay for weight saving materials not being very good at resisting our damp climate. Quote Link to comment Share on other sites More sharing options...
MartMini Posted August 18, 2014 Report Share Posted August 18, 2014 I've had the same problem but not with just Hope trialzone the Avids on my Enduro did the same thing and now i regularly apply a small amount of copperslip to the pistons which seems to stop them corroding. Basically, i remove one of the pads squeeze the lever as much as i dare exposing the piston surface then apply the CS and then repeat for the other side. I hope you have luck with your warranty claim. Personally i think its a price we have to pay for weight saving materials not being very good at resisting our damp climate. I'd advise against using copperslip on the piston. For a start it's an anti seize compound, and im pretty sure it has small partials of copper in it, which would score the piston/bore over time. Brake grease would be a better idea Quote Link to comment Share on other sites More sharing options...
psiron Posted August 18, 2014 Report Share Posted August 18, 2014 will give the brake grease a try, although copper slip is heat resistant not a prob on the trialzones not sure about the avids on my Enduro. :'( Quote Link to comment Share on other sites More sharing options...
eskimo Posted August 18, 2014 Report Share Posted August 18, 2014 No offence, but this is the dumbest thing i've ever seen from you. Second hand. Emailed them but posted here anyway. Do i need to write a post about why, how, WHYYYYYYYY. I hope not >.< 1 Quote Link to comment Share on other sites More sharing options...
AdamR28 Posted August 18, 2014 Report Share Posted August 18, 2014 I'd advise against using copperslip on the piston. For a start it's an anti seize compound, and im pretty sure it has small partials of copper in it, which would score the piston/bore over time. This. No offence, but this is the dumbest thing i've ever seen from you. Second hand. Emailed them but posted here anyway. And this (Sorry Dave) Try this: Quote Link to comment Share on other sites More sharing options...
isitafox Posted August 18, 2014 Author Report Share Posted August 18, 2014 No offence, but this is the dumbest thing i've ever seen from you. Second hand. Emailed them but posted here anyway. Do i need to write a post about why, how, WHYYYYYYYY. I hope not >.< Felt a bit cheeky asking them hence the post on here then I remembered that people have in the past sent 2nd hand, 3rd hand, etc brakes and hubs to them and had them fixed. I ended up emailing them anyway as I was on nights last night and obscenely bored. That is my excuse..... 1 Quote Link to comment Share on other sites More sharing options...
CC12345678910 Posted August 18, 2014 Report Share Posted August 18, 2014 Isn't hope's aftersales renowned for being class?? They seem to do stuff for people that most companies wouldn't even think of. Just dont expect it, like its a god given right, be reasonable and IMEx, like all in life, they'll be sound back and do what they can. U are after all trying to get something for nothing where out of T&Cs warranty claims are concerned. That's my attitude anyway Quote Link to comment Share on other sites More sharing options...
Mark W Posted August 18, 2014 Report Share Posted August 18, 2014 be reasonable and IMEx Is that some kind of weird acronym? Quote Link to comment Share on other sites More sharing options...
eskimo Posted August 18, 2014 Report Share Posted August 18, 2014 No disrespect but i would of gone for the, email them and ask "for a possible fix/ repair of my second hand product". But you're right, people have somehow claimed warranty on second hand products, BIZARRELY Your excuse is acceptable, for now. 1 Quote Link to comment Share on other sites More sharing options...
CC12345678910 Posted August 18, 2014 Report Share Posted August 18, 2014 Short for In my experience mark, like IMO. I was being lazy but it's clearly backfired. I'm typing this after all Quote Link to comment Share on other sites More sharing options...
dann2707 Posted August 19, 2014 Report Share Posted August 19, 2014 I just wire wooled mine when they were corroded and causing air to get in. Worked a treat. Much like when car pistons do the same in the brake calipers. Quote Link to comment Share on other sites More sharing options...
isitafox Posted August 19, 2014 Author Report Share Posted August 19, 2014 To cut a short story short, I asked Hope the best way to go about fixing it and if they could give me a price (didn't want to just ask for them to do it for nowt) and they just said replacement pistons were around a tenner from suppliers. Order is in to the Tarts! Quote Link to comment Share on other sites More sharing options...
dann2707 Posted August 19, 2014 Report Share Posted August 19, 2014 Why not just wirewool them down whilst you're at work? Quote Link to comment Share on other sites More sharing options...
isitafox Posted August 19, 2014 Author Report Share Posted August 19, 2014 Would rather stick with new then I know it'll be sorted for good. And can always rub the old ones down and hold them for spares or sell them on. 1 Quote Link to comment Share on other sites More sharing options...
isitafox Posted August 21, 2014 Author Report Share Posted August 21, 2014 Well I just swapped them along with a new red bore cap to match my lever blade and I'm glad I got new. This is the worse of the two Can't wait to bleed it and refit, should be like a new brake! Quote Link to comment Share on other sites More sharing options...
dann2707 Posted August 21, 2014 Report Share Posted August 21, 2014 Jesus. You let that near your son??! Looks like he's been munching it haha Quote Link to comment Share on other sites More sharing options...
isitafox Posted August 21, 2014 Author Report Share Posted August 21, 2014 Yeah I think it's past a bit of wire wool! Quote Link to comment Share on other sites More sharing options...
dezmtber Posted August 21, 2014 Report Share Posted August 21, 2014 the main reason why all the other hope brakes use phonolic pistons and not alloy ones. Quote Link to comment Share on other sites More sharing options...
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