Brake advice: 4 pot...
 

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[Closed] Brake advice: 4 pot rear, 2 pot front,

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Just received an order and whilst on support chat regarding missing lever boot and olive/barb, I realised they have sent me rear 4 pot Shimano M6120 (with M6100 on the bag which would be a 2 pot to match the front). They don't seem bothered, I don't think I'm bothered.

Both brakes are prefilled but need connecting to the levers, which I don't think will need bleeding if it goes to plan.

But...

My head says swap the hoses at the caliper and have the 4 pot at the front, but I'll need to bleed them. Will it actually make a difference having 4 pots on the front or an I just creating hassle for no gain? Levers are presumably the same so can't see there being more power, but the pads are bigger so they should wear better...


 
Posted : 18/02/2022 6:19 pm
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If I was going to run 4pot 2 pot the 4 pot would be on the front. Swap at the caliper and if you are careful you shouldn't loose much if any fluid but if your bleeding anyway its probably better to do it all at once.
Sounds like a win to me


 
Posted : 18/02/2022 6:24 pm
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Yep, 4 on the front. If you're careful, you may get away without a bleed, but even if you don't, it's worth the effort.

Think about brake pads though. You now need to carry two sets of spares.


 
Posted : 18/02/2022 6:27 pm
 si77
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Conventional wisdom is to have the bigger brakes on the front. However, I really like having the better modulation that 4 pots give on the back. You could try that first and swap over if you don't like it. Or even just upgrade the front to 4-pot at a later date?


 
Posted : 18/02/2022 6:29 pm
 feed
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Yeah, I'd be switching the 4 pot to the front, especially given Shimano are so easy to bleed.


 
Posted : 18/02/2022 6:30 pm
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Thanks everyone 🙂

Classic Yeti 575 getting rebuilt 🙂


 
Posted : 18/02/2022 6:40 pm
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Pictures when rebuilt OP!


 
Posted : 18/02/2022 6:59 pm
 poah
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put the hose on the lever then swap the callipers over. That will minimise the fluid loss. Then just do a bleed.


 
Posted : 18/02/2022 7:43 pm
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As above, 4 pot on the front.
What size Rotors?
180 each end will be good, if you can do 203/180 even better.
Shimano brakes are really easy to bleed.
I use LHM fluid from a motor spares shop which is way cheaper than Shimano mineral oil. I’ll haven’t had any issues…


 
Posted : 18/02/2022 9:02 pm
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I used to use LHM certainly didn't damage the seals, but personally I think it a bit thicker. Levers seem to be a touch easier to move and return with actual Shimano fluid.


 
Posted : 19/02/2022 6:06 pm
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3 rides in and 50 miles and it's doing great 🙂

[img] [/img]

@jamj1974


 
Posted : 02/03/2022 8:18 pm
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Nice! How's the main pivot? No play? Mine went very waggy at the end of it's life.


 
Posted : 03/03/2022 10:17 am
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Sweet, I had the same model, but with a rubbishy DHX air shock.

Did you swap the calipers? I'd have been tempted to try the 4-pot on the rear to test a theory.


 
Posted : 03/03/2022 10:23 am
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For no reason other than being too lazy to swap it, i am running a 4 pot rear 2 pot front on my hardtail. Cant say whether i prefer it or not really but the back brake has always been the one that i cook on any bike ive had before, so im quite happy to have the brake that is better equipped to deal with the heat on the rear.


 
Posted : 03/03/2022 11:14 am

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