Let's offroad / mountain bike / mtb / ride dirt

Hell no. These are like 100 years old. Maybe "Louise" or something

"Magura Louise FR" seems to fit.

I want them replaced with Shimano to stop the levers rattling and because, Shimano.

Well I have purchased a Total Bleed Solutions kit and will have a crack at doing this myself.

Is there such a thing as a bicycle vacuum bleeder? It seems that the problem with my rear Magura is that no-one can get all the air out, so a vacuum bleed might make sense.

I don't know whether there's some fancy gizmo that does that but that's how my road Hope brake is bled which was more effective than Shimano's sandwich bag and push method.

A big syringe threads into the brake and you pull up the plunger creating a vacuum and it rather successfully sucks out a bunch of tiny bubbles

The difficult bit with these if fully filling the lever reservoir. It's easy to leave a pocket of air that then finds its way in to the lines when on the trail. Make sure you follow Magura's instructions on how to position the leaver on the bars for bleeding. If you can remove the brake from the bike and run the hose in a straight vertical line it's easier.

https://www.youtube.com/watch?v=GMRk916qJT

Sell the Maguras and buy some XTR 4pots? They'll work really well, match the rest of the bike and are easy to bleed.

Magura's have always been a bit finicky to bleed. I use this technique, which works fine, but with less posh tools https://www.youtube.com/watch?v=k91lB1zMhfk&ab_channel=ParkTool
but do the push pull three times. I also tap the caliper and hose gently with the handle of a small screw driver and flick the brake lever a few times to free stubborn bubbles between each cycle.

Sell the Maguras

Yeah this

Sell the Maguras and buy some XTR 4pots? Until you get the Shimano microleaks and then get some Hope E4s and still be using them 8 years later etc etc ha ha

Park tools tooling looks interesting:

https://www.youtube.com/watch?v=k91lB1zMhfk

A trick I used with my MTs: once the system is 'full' rubber band the lever to bars so as to isolate the line and the calliper. Then create a vacuum using the lever syringe. Release / Pull / Release / Pull until no more bubbled or boredom sets in. Then release the elastic band.

Aye that's the same method as the hope. Worked very well on the road bike

A trick I used with my MTs: once the system is 'full' rubber band the lever to bars so as to isolate the line and the calliper. Then create a vacuum using the lever syringe. Release / Pull / Release / Pull . Then release the elastic band.

This too

Its the technique I use on all my hydraulic brakes (Hope and Shimano, also Maguras in past) and seems to work. Last Maguras I have were some Mt4s last year and they bled fine, and worked really well. I just didnt like the rattly levers. Do they all do that?

Do they all do that?

No. The MT4s have a different interface at the master that doesn't allow lever swaps.

That said, I can't remember the MT4s on cargo bikes / GSDs rattling. Maybe you had a shonky pair?

Actually, just checked, they were MT6s Yeah they were a 2nd hand pair. Changed the hoses and bled them fine and they worked really well, just the lever rattle was annoying. Interesting as need a new pair for a build and cant afford Hope and dont want Shimano.

Martas bitd as well which were superb (once bled correctly)

It's possible the leavers were changed on the pair you had and it wasn't done right. IIRC the hinge pin is an interference fit.

Also noticed that if you crash hard, i.e. OTB or something, the levers can get driven backwards and the sacrificial tab on the lever itself (that prevent rattling!) gets snapped off.

So maybe your brakes were involved in a big off at some point.

FWIW MTs are superb brakes.

position the leaver on the bars for bleeding

the leavers were changed

Brexit thread >>>>>

Hnnngngggggggg

If Maguras were decent brakes they wouldn't be so hard to bleed.

Just look at Hope, no syringes required, just pour the fluid into the reservoir in from the bottle, job done.

Can you match the shifter and dropper control on those?

No idea, I'm afraid. The high price and long waiting time for them puts them slightly out of my reach

Seeing as everybody just recommends what they've got, I'm very happy with my 'budget' shiny brakes. Particularly how quiet they've been

Well, I'm going to try to make my existing brakes work, and will proceed from there.

Serious 90s bling CNC vibes!

just pour the fluid into the reservoir in from the bottle splashing that mildly corrosive DOT shit all over your sick fadez and everything else

I liked the Tech Evos I had but I paid @t_w and Soho Bikes to bleed them for me!

I'm having issues with some 4pot XTs on the rear, it seems one of the pistons will not fully retract, so is rubbing the rotor.
The front is quite soft too.
Might give it a proper bleed and see if it fixes it, but it is most annoying to be this shit out of the box.