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Hope mono trial issue


jnthebiker

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It'll either be...

- Bolts are too tight (undo then and just nip them up VERY gently, it doesn't have to seal under pressure, only gravity)

- Excess fluid, wipe off and away you go

I just tried the bolts. It's about 80% better, but still a few bubbles. How gently is VERY gently?

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  • 1 month later...

Turns out it's not mint at all... It's leaked ever since a week after that. When I fix one problem, another arises. I'm pretty much ready to be done with this brake, unless it can really be fixed in a way that it will STAY! :( Does anyone have any ideas for how to deal with it?

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It doesn't come out the wrong way at all. Where would you recommend for me? I'm in upstate New York in the United States. Even finding a bike shop is over an hour drive, and there's NO WAY that they service hopes. Do you guys do it there at Tarty? If so, what would the cost be including shipping?

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It doesn't come out the wrong way at all. Where would you recommend for me? I'm in upstate New York in the United States. Even finding a bike shop is over an hour drive, and there's NO WAY that they service hopes. Do you guys do it there at Tarty? If so, what would the cost be including shipping?

Tarty do this but couldn't you try to buy a new diaphragm first?

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Tarty do this but couldn't you try to buy a new diaphragm first?

Yes I could, but I'm pretty much done with this brake mentally, I have probably put close to 30 hours into this thing and it hasn't gotten any better. I would like to send it out and have it dealt with, or get rid of it. What's the fee for tarty doing a full overhall? I looked on their site and couldn't find it, maybe I looked in the wrong place?

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We charge £20.83 per hour (weird price cos it's £25 with VAT) for labour, and do things on a job-by-job basis. We prefer not to do a 'full overhaul' on something if it doesn't need it, but happy to do so if you wish. We prefer to start with a free of charge inspection and quote for the job from there.

Is there a leak anywhere? If so, where from exactly and when does it leak exactly?

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Ok. I would let you guys judge what it needs if i were to send it. My goal is to have a very good brake, that doesn't feel like a sponge with a lever. It leaks a lot from the diaphragm as in the first picture I posted in this thread. Also, I think it may leak in the master cylinder piston area, as it makes squelching noises when the lever is pulled. The diaphragm leak is when I pull the lever. Thanks

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Ok, all the above points to that it just needs a good bleed and a new diaphragm. The squelching will be fluid that's come out from under the reservoir cap and therefore 'farting' air through part HBSP102: http://www.roteccycles.co.uk/ekmps/shops/rotec/images/hope-mono-mini-master-cylinder-lever-lid-diaphragm-%5B2%5D-2107-p.jpg- it doesn't do this when it's dry.

If the reservoir cap bolts have been too tight in the past it can deformed the diaphragm, and will never seal properly again, which is the likely cause of your leak.

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