Mechanics and Fixing Any Questions Answered

Thanks for the suggestion though!

Edit: Have given up and taken it in to the LBS, interested to see what they thought the issue was.

I work for a tiny bike repair operation and I want to order a few sealed bearings to deal with a mix of bikes - road bikes from 2005-present, modern gravel bikes and all types of MTB.

Below are the "most common sizes" of sealed bearing according to our supplier. Could anyone identify the most common 12-15 sizes from below, or otherwise convince me that we need to buy all 23 sizes?

Bottom bracket bearing 6805 25x37x7
Bottom bracket bearing 6805 D24 24x37x7
Bottom bracket bearing 6806 30x42x7
Bottom bracket bearing 6807 35x47x7
Bottom bracket bearing 19x28x5
Wheel bearing 6000 10x26x8
Wheel bearing 608 8x22x7
Wheel bearing 63803 D28 17x28x7
Wheel bearing 6800 10x19x5
Wheel bearing 6801 12x21x5
Wheel bearing 6802 15x24x5
Wheel bearing 6803 17x26x5
Wheel bearing 6804 20x32x7
Wheel bearing 6900 10x22x6
Wheel bearing 6901 12x24x6
Wheel bearing 6902 D26 15x26x7
Wheel bearing 6902 15x28x7
Wheel bearing 6903 17x30x7
Wheel bearing 6903 D18 18x30x7
Wheel bearing 63802 15x24x7
Wheel bearing 6902 D16 16x28x7
Wheel bearing 6902 15x28x7
Wheel bearing 6002 15x32x9

.... and it appears that they've left headsets off completely! What are the most common sizes?

Bottom bracket bearing 6805 25x37x7 Campag UT, use OEM bearings if you ever need to
Bottom bracket bearing 6805 D24 24x37x7 HT2/GXP etc., use a complete BB, it's cheaper after allowing for labour
Bottom bracket bearing 6806 30x42x7
Bottom bracket bearing 6807 35x47x7 Not common
Bottom bracket bearing 19x28x5 Use complete cartridge BB
Wheel bearing 6000 10x26x8
Wheel bearing 608 8x22x7 Only used on weight weenie front hubs, avoid
Wheel bearing 63803 D28 17x28x7
Wheel bearing 6800 10x19x5 Only used on weight weenie front hubs, avoid
Wheel bearing 6801 12x21x5
Wheel bearing 6802 15x24x5
Wheel bearing 6803 17x26x5
Wheel bearing 6804 20x32x7
Wheel bearing 6900 10x22x6
Wheel bearing 6901 12x24x6
Wheel bearing 6902 D26 15x26x7
Wheel bearing 6902 15x28x7
Wheel bearing 6903 17x30x7
Wheel bearing 6903 D18 18x30x7 Not common
Wheel bearing 63802 15x24x7
Wheel bearing 6902 D16 16x28x7 Not common
Wheel bearing 6902 15x28x7
Wheel bearing 6002 15x32x9

they've left headsets off completely! What are the most common sizes?

41.0×36°×45° ACB
41.8×45°×45° ACB

For anything else, just buy the headset.

👏 Top man.

Thanks tester, you da man

I’m going to pair a Shimano R685 lever with a Hope RX4 caliper. I think I need Hope fittings for the caliper and Hope hose but what size insert for the Shimano end. I have many BH 59 hoses so I’m guessing not this one…

Ignore me sorry

The barb for whatever hose you use, shimano olives are all the same.

I think what I mean is what Barb to fit a Hope hose to a Shimano lever….what’s the id of a Hope hose?

Use a hope barb and olive, although you'll be better off with Shimano hose and fittings.

So can I get a BH59 hose to fit a Hope Barb they are a different shape and seem to use a copper washer

I’ve used the hope fittings on shimano hoses with success (hope banjo and fittings on zee callipers with both shimano and jagwire hoses)

No, use shimano fittings on Shimano hose (BH59 or 90 barb for BH59 or 90 hose), use hope fittings on a hope hose. But the shifters cost a lot more and are more prone to breaking than the calipers where the hose enters, so I'd use Shimano hose rather than hope.

But most of it's just bike plumbing, if you can smush it together and it seals, it'll probably work.

It’s what I’m using now (sorry for poor photo) and seals / works fine.

1 Attachment

if you can smush it together and it seals, it'll probably work

Yeah, what's the worst that could happen at a pressure of 300 bar?😀

Eugh hopefully nothing directed at soft tissue 😅

So Hope RX4 caliper, Shimano R685, what hose? Can I use Hope fittings on a BH59 hose?
What’s the outside diameter of this bit?

1 Attachment

I said probably.

https://www.hopetech.com/_repository/1/documents/2017-RX4-Shimano-Instructions-Website-1.pdf

That tells me to use a Hope hose but not whether to use a BH59 or a BH90 Barb in it at the Shimano lever end

Do you have both? Try the 59 first.

I’m going to buy the Hope connector and measure it

If you can remind me on Monday I'm pretty sure I can do it for you.

So I managed to do this somehow (photo). Guess I’ll be needing some new cranks (£10 Chinese pedals are unharmed). I’ve never really understood bottom brackets - these cranks are shimano non-series R563/R565, so will any shimano 5xxx cranks do the job?

Many thanks for any advice,

Dan

1 Attachment