Source for Magura Motor Cutout Switch

6zfshdb

6zfshdb

Well-Known Member
Region
USA
City
Northeast Pennsylvania
Anyone find a source for the motor cutout micro switch imbedded in a Magura brake handle? It's a replaceable part, but I have yet to find one. I can usually clean the buildup of road debris from the mechanism but I have two with bad contacts inside the sealed switch. So far, I've only been able to find the complete lever assembly and the $65 price tag is a big turnoff.

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Amazon.com : Magura MT5e Disc Brake Lever Blade for E-Bike Aluminum : Sports & Outdoors

Amazon.com : Magura MT5e Disc Brake Lever Blade for E-Bike Aluminum : Sports & Outdoors
www.amazon.com

If I have to, I'll convert to the hyd. pressure switches used on newer brake systems:
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www.performancebike.com

Magura eBike Brake Pressure Switch (For Magura Rim and MT Disc Brakes)

The Magura hydraulic brake pressure/motor cut-off switch is specifically designed to control functions such as the on/off features of the lights and... 0_724_344
www.performancebike.com www.performancebike.com

A bit cheaper but a lot more work than just replacing a switch.
 
Gionnirocket said:
Are the Magura mineral oil?
If so I wonder if you can use a Tektro lever... the brake sensors are easily found/replaced
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Yes, Magura uses "Royal Blood" mineral oil.
I'll look into the Tektro, but I doubt the parts are compatible.
Thanks for the tip though.
 
6zfshdb said:
Yes, Magura uses "Royal Blood" mineral oil.
I'll look into the Tektro, but I doubt the parts are compatible.
Thanks for the tip though.
Click to expand...
Yeah I don't know how you can know other than testing as those types of specs are not published. You might have a different line fitting but that's easily changed. More important is the operating pressure/fluid travel amount with a lever squeeze.
That said... How different can it be??
 
Curiosity got me and after doing a little reading consensus is that my suggestion isn't as plausible as I thought....basically for the reasons I stated.
That said I couldn't find any results from anyone that actually tried it. So maybe if I had the hardware lying around I might try it but I wouldn't spend any money to.
You find any source for the sensor itself? Does Magura have any helpful customer service?
 
The switch wasn't the only problem. It turned out to be a much more expensive repair. After I disassembled the brake handle, I found the hydraulic reservoir had a fine crack that was slowly leaking oil. It was the reason I had to keep bleeding the system to restore good braking action. I had to replace the entire handlebar assembly. The replacement part came with a new handle and switch, so problem solved.

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6zfshdb said:
The switch wasn't the only problem. It turned out to be a much more expensive repair. After I disassembled the brake handle, I found the hydraulic reservoir had a fine crack that was slowly leaking oil. It was the reason I had to keep bleeding the system to restore good braking action. I had to replace the entire handlebar assembly. The replacement part came with a new handle and switch, so problem solved.

View attachment 200826
Click to expand...

So much for the touted lighter composite material... and like that amount of aluminum really needs to be eliminated.
Supposedly it has a 5 year warranty... I assume you're past that point?
 
Gionnirocket said:
So much for the touted lighter composite material... and like that amount of aluminum really needs to be eliminated.
Supposedly it has a 5 year warranty... I assume you're past that point?
Click to expand...
Yes, the warranty expired last year.

It's likely my fault anyway. The crack probably happened when I dropped the bike 2 seasons ago. The leak was so slow, I never noticed it because it was in the reservoir, not the high pressure plumbing. It was likely the reason I needed to bleed the brake at the beginning of every season.

You're right though. Aluminum would have taken the shock better than the "new and improved" composite material Magura is using now.
 
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