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Magura brakes on P5

Old 02-16-19, 06:55 PM
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jrpappy
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Magura brakes on P5

I have a Cervelo P5 with Magura brakes. Love the bike, dialed fit, etc. So not looking to upgrade. But the Magura RT8 brakes are leaking, unsupported and unserviceable.

I've been given recommendations to swap brakes and levers to TRP mechanical. Problem is that this will make it impossible to cover the front and rear brake calipers with the aero brake covers.

Does anyone have any experience with mixing hydraulic brake levers and brake calipers? I'd like to keep the Magura calipers and replace the levers with the Shimano DI2 hydraulic levers as long as they are compatible. I know they may not be a perfect match, but they do both use mineral oil, so that's a start.

Any recommendations would be greatly appreciated!

John
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Old 02-16-19, 11:40 PM
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fietsbob 
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you on which continent ?

https://www.magura.com/media/1946/rt...2013_en_08.pdf


note last page, 3 regional distribution/ service centers contact addresses ...








....

Last edited by fietsbob; 02-17-19 at 11:30 AM.
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Old 02-17-19, 01:10 AM
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jimc101
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Originally Posted by jrpappy View Post
I have a Cervelo P5 with Magura brakes. Love the bike, dialed fit, etc. So not looking to upgrade. But the Magura RT8 brakes are leaking, unsupported and unserviceable.
5-year warranty, and totally serviceable (but use warranty first), you need to question the reasoning of this from whoever told you the weren't supported (if the LBS who sold you the bike is saying this, they shouldn't be selling them)

Originally Posted by jrpappy View Post
I've been given recommendations to swap brakes and levers to TRP mechanical. Problem is that this will make it impossible to cover the front and rear brake calipers with the aero brake covers.
So not a good choice!

Originally Posted by jrpappy View Post
Does anyone have any experience with mixing hydraulic brake levers and brake calipers? I'd like to keep the Magura calipers and replace the levers with the Shimano DI2 hydraulic levers as long as they are compatible. I know they may not be a perfect match, but they do both use mineral oil, so that's a start.
Technically, they both use the same type of fluid (minieral) but after that would stick with a brand, and not mix and match between brands.

Originally Posted by jrpappy View Post
Any recommendations would be greatly appreciated!
More info, how old is the bike. where you are helps for specifics? Get the Maguras fixed under warranty/service if over 5 years and ride?
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Old 02-17-19, 11:33 AM
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You want to convert whole hydraulic brake system to mechanical ? no half way .. remove the whole thing..

Cervelo P5 (web image) is rather high end, are your mechanical skills advanced, to match?


Last edited by fietsbob; 02-17-19 at 11:37 AM.
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Old 02-17-19, 06:28 PM
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Thank you fietsbob and jimc101. I'm in Phoenix, Arizona, so lots of good bike shops around here. This is the information I have gotten from two LBSs who rep Cervelo. I don't want to covert my bike to mechanical as I'm happy with the hydraulic brakes and the overall functionality. But I was told that this was my only option from both shops independently! I'll call Magura tomorrow to find out what they can do. Sounds like I've been the recipient of some bad intel.

If I find out anything of interest on this site, I'll make sure to let you all know.

John
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Old 02-18-19, 11:08 AM
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I have a Magura, brake set, but its their HS 33 Rim Brake for V brake post Frames 11 years back I replaced the Hoses, for longer,
After that all I did was replace brake pads .

'Olives' are what they call the sealing ring that grips the hose as you tighten the fittings , that is what can leak, you buy new olives,
and have to cut the hose shorter to get the old ones off..

Most shops only see hydraulic disc brake and predominantly Mountain bike.

Magura's rim brakes are a bit different , a Closed System, no expansion tank needed, like disc brakes
because applying the brakes does not heat the fluid,
so once the air bubbles are out , they don't need regular maintenance bleeding..






.....
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Old 02-22-19, 08:24 AM
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Well I called Magura and they confirmed that there are no more RT8 or RT6 brakes in stock and that the brake levers are indeed unserviceable. The guy I spoke with was helpful and sounded a bit frustrated that Cervelo, in their wisdom, decided to scuttle a product that took a lot of time to design and manufacture. I think it's crap that and expensive, high performance bike like the P5 would have this problem with no apparent ez fix.

The rep suggested to me that others have tried, with success, to swap out the levers for the Shimano DI2 hydraulic lever/shifters. I've asked my LBS to order a set and give it a go. I'm a bit concerned as I've heard that it can be tricky...that there's no pad wear adjustment on the Shimanos like there was on the Magura.

Hopefully will find out whether this works this week.
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Old 02-22-19, 10:01 AM
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Magura still make the cable to closed hydraulic converter that mounts under the stem? then your brake lever will be cable

and the Di2 multiple button set .. for both bull horn and aero bar shifting..
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Old 04-19-19, 09:11 AM
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Just as an update, I had my LBS replace my Magura brake levers with Shimano hydraulic lever/DI2 shifters. It was successful and works great. The Shimano levers have a longer pull then the Magura levers but I'm happy to keep my P5 mostly intact.
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Old 05-06-19, 11:40 AM
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Hello jrpappy- I hv the same issue with my P5 and the/my bike store made the same recommendation to go mechanical but then I lose the fairings....so just order the 2019 Shimano hydraulic lever/Di2 shifters, remove the magura levers and the Shimano levers connect just fine and the new set up holds the charge and oil pressure?
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Old 05-12-19, 06:43 PM
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Originally Posted by Steve Marshall View Post
Hello jrpappy- I hv the same issue with my P5 and the/my bike store made the same recommendation to go mechanical but then I lose the fairings....so just order the 2019 Shimano hydraulic lever/Di2 shifters, remove the magura levers and the Shimano levers connect just fine and the new set up holds the charge and oil pressure?
So far so good, Steve. Iíve only put a couple hundred miles in the new brakes so far so maybe too soon to tell. My LBS mechanic said that these brakes are really sturdy, as you would expect from Shimano. At first it took me awhile to get used to the longer lever travel. And I donít know if there is a way to adjust for brake pad wear. But they look and feel great and the shifting on the horns is great, especially when navigating busy roads on the way out onto the open roads.

I was getting so tired of the mushy brake feel that my Maguras developed. So riding now feels really secure. Youíre going to love them.
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