Mechanics and Fixing Any Questions Answered

Pretty sure @snottyotter said he'd got GRX hydros working with Shimano MTB brake calipers.

More of the RD, calipers are compatible.

GRX RX400 and Tiagra 4700 series should be cross-compatible.

Thanks for the input all. Sounds like I’d need a new RD, but potentially could get away with that plus GRX shifters being the only new components (keeping the Deore callipers).

If I used a 2x left STI in a 1x setup would that be weird with the shifting not attached to anything? Would the levers just be flapping about sideways?

I have 8020 on the left as a brake only and nothing flaps around . Useful on boring roads to pretend your going to big ring it.

Haha thanks, good to know there are advantages!

Welcome to the world of modern bikes. Now please convince others to not balk at workshops charging so much to build it all. In a day or so.

I could do it faster the second time but I'm not enthusiastic about having to :)

That’s always the magic bullet.
Getting worse though, multiple brands, multiple times a week.

How’s the build coming?

How poignant is the ‘too much grease = skiddish balls’ thing?

I re-packed a set of ancient Chris King ISO hubs recently, and filled the bearings to the brim with grease. Will I be dieded?

How’s the build coming?

Just need to cut and connect the hoses, add fluid and bleed in terms of "complicated" bits. Need to swap a crankset off my gravel bike, then index the gears and add bar tape then I'm done but that's an hour one evening I reckon.

As long as it's not mega thick, a full-fill is ok by them:

https://chrisking.com/blogs/news/how-to-service-chris-king-bearings

Lovely, thanks. I used the official CK hub grease.

Committed to service this bottom bracket. Any advice on regards the bearings? Where to buy, model, price, etc..

It says 6002RS, but loads of options out there.

Cheers

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Just buy a new BB.

Seconded!

Get a Tange one, way nicer.

UN300, I've seen a bunch of tange fail and we've replaced them on the cheap, although could've been a bad batch.

UN300

Is there a NJS alivio crank I'm not aware of?

@AITOR
SKF 6002RS are 3GBP a pop.
Go ahead if you have a bearing drift/puller.
I've refurbed a few Campag cartridge BBs, 10min job.

It's fascinating folks still don't think twice before throwing shit away in 2022.

Is there a NJS alivio crank I'm not aware of?

No, but shimano BBs are JIS. I'm happy to fix up most things, but cartridge BBs you may as well just get a new shimano one in that'll do the job for years, the fixed cups aren't really designed to be removed or refitted and you're not gaining anything from saving the sugino and might end up fucking it up and need a new one anyway.

That Sugino BB above is JIS definitely not NJS...

Yes!

I bought a very neglected bike and I´m servicing every single bit of it, just to learn and also to not waste. I know that probably the time I´m putting into it it´s ten times the cost of replacing it but I love repairing.

I think I´m actually going to try and clean and regrease the bearings, I´ll get a new set if I can´t and will replace it as the last option.

I'm trying to DIY some extraction tool I shaw in this video https://www.youtube.com/watch?v=D1xAzt9cmt4

Probably a horrible idea, but want to try!

Not a question rather an oddly satisfying job removing a threaded octalink crank!

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shimano BBs are JIS

Well aware, UN300 is simply not produced with the corresponding spindle length.

not gaining anything from saving the sugino

except the satisfaction inherent to taking apart and servicing things not meant to.

@AITOR
more power to you.

Kudos to you but that's not a mechanic's job, that's for an enthusiast.

Says who, Big Bike™?
Several square taper BBs with user friendly replaceable cartridge bearings out there.
T.A., White industries, probably more.