Author Topic: MP EDGE: bearing sizes?  (Read 11233 times)

Offline Thingamajig

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MP EDGE: bearing sizes?
« on: April 29, 2024, 02:21:35 PM »
So my MP: Edge has developed a odd sound when running. Sorta like a loose bearing sound.

I disassembled the hub, and noticed the small bearing was alright, smooth motion, no noise or gritty feeling in it's movement.

The large one however had a bit of noise to it, and was a bit gritty feeling in it's motion -- due replacing it seems.

However, my idiot ass didn't write down the names of the bearing sizes, and from what i've found online replacements are costly (like, >$100 costly) which is just a bit crazy to me.


In the meantime I re-greased the noisy bearing in the hopes to get continued use from it for a few months. I do need to source a replacement though so if anyone can tell me what size this bearing is and/or a source with a reasonable price i'd really appreciate it.

Thanks

Offline Bikemad

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Re: MP EDGE: bearing sizes?
« Reply #1 on: April 30, 2024, 11:23:48 AM »
If you have the standard (Non-cassette) version of the Edge, the large bearing should be a 6817-2RS 85mm x 110mm x 13mm which is different to the Magic Pie bearing but the small bearing is the same as the MPIII, 4 & 5:



However, if yours is the cassette version, the large bearing should still be the same (6817) but the single 6302 bearing has been replaced by two smaller bearings within the free hub as shown below:



I recommend using a 6901-2RS instead of the 6901-ZZ for the freehub as the rubber seals should help to keep the grease in and the dirt and water out.  ;)

I suggest that you try searching eBay for a 6817-2RS bearing and see what you can find.

Alan
 
EDIT: Bearing information corrected.
« Last Edit: May 05, 2024, 12:37:28 AM by Bikemad »

Offline Thingamajig

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Re: MP EDGE: bearing sizes?
« Reply #2 on: May 04, 2024, 01:59:32 PM »
Just thought i'd come back with an update.

The large wheel bearing is definitely not the same size. Picture for comparison:


Top is the Magic Pie Edge large bearing (brake/controller side) bottom is the one recommended here.

I measured my MP Edge bearing size to be: 85x110x13 and NOT the 85x120x18 as recommended.

Not a big deal, can easily return and exchange -- just thought i'd update here as the infographic is not applicable to the MP Edge hub.


The other bearing size however is 100% correct (The small one/gear side) at least for a Freewheel type hub which is what mine is.

Hopefully this helps others. Thanks again for all the help.

Offline Bikemad

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Re: MP EDGE: bearing sizes?
« Reply #3 on: May 05, 2024, 12:39:30 AM »
Thanks for the update, and for clarifying the correct bearing size.

I apologize for the misinformation and I have amended my previous post with the correct details to prevent further confusion.

From your pictures and measurements, the correct large bearing for the Magic Pie Edge should be a 6817-2RS (85mm x 110mm x 13mm).

I'm now wondering if the Smart Pies also use the same size bearings as the Edge.  :-\ 
I'll have to take a sneaky peek inside one of my Smart Pies at some stage to confirm the bearing sizes.

Alan