the 'there's no such thing as a stupid question' bike maintenance thread

Jim2007 · 19-03-2023 06:04PM

https://www.boards.ie/discussion/comment/120376383#Comment_120376383

OK, sounds good... I'm always a bit doubtful about little or no maintenance adds. BTW, this is the actual bike. Thanks for your feedback.

https://www.cube.eu/ch-en/cube-travel-pro-denim-n-silver/650200

68 lost souls · 19-03-2023 06:05PM

Yeah it’s a Shimano BB-RS500PB press fit. I’m going to see if a little bit of heat from the heat gun will persuade it a bit.

I’ve cleaned it up a bit to make sure there’s no hits of grit getting in the way and I’ll try add some gt 85 too maybe.

68 lost souls · 19-03-2023 08:14PM

Well a bit of heat and force it looks like the cup is mostly still attached but smashed to bits now. Not sure where to go next, think it’s nearly time I dropped it to a bike shop to be honest

EDIT: it was more stubborn but finally we have daylight. Once the bearing came out the cups were still stubborn but easier to get

at1withmyself · 19-03-2023 08:23PM

https://www.boards.ie/discussion/comment/120376496#Comment_120376496

The red bike has IS mounts, you can see the adaptors fitted to the brakes. You should be still able to swap, just keep the adaptors on the red bike.

Large bottle small glass · 19-03-2023 09:44PM

https://www.boards.ie/discussion/comment/120376634#Comment_120376634

That's a very low maintenance bike, the belt drive takes the hassle of chain/drivetrain maintenance out of equation.

It's not particularly light at 15kg, and you will pay well to make that type of bicycle light if you go that way. You would be looking at more expensive wheels, lighter mudguards etc

As a comparison the Canyon Commuter 9 Ltd is almost exactly 3kg lighter

I wouldn't rule out a well specified ebike to keep you in the long range game and even the odd alpine pass.

I regularly meet a local 80 yr old north of 300m on his ebike, I think they are great for lots of different cyclists.

T-Maxx · 20-03-2023 12:13AM

https://www.boards.ie/discussion/comment/120375952#Comment_120375952

I have last year's model and think it's a fantastic bike for the money. Out of the box it needs nothing. Maintenance requirements = zero. The weight of the bike is irrelevant.

Jim2007 · 20-03-2023 03:44PM

https://www.boards.ie/discussion/comment/120377646#Comment_120377646

Thanks I'll take a look at Canyon.

Jim2007 · 20-03-2023 03:49PM

https://www.boards.ie/discussion/comment/120378000#Comment_120378000

Good to hear. Yes I think it does offer good value and "Travel" version looks like excellent value if you are looking for a full set of gears. The weight will matter for the short term as I will take it on the train several times a week - the Swiss Federal Law requires all stations to raise the platform by the end of next week, so after that there will be no need to lift the bike on to the train.

CantGetNoSleep · 20-03-2023 09:57PM

https://www.boards.ie/discussion/comment/120377325#Comment_120377325

Thanks for your help

CantGetNoSleep · 21-03-2023 06:17AM

https://www.boards.ie/discussion/comment/120381457#Comment_120381457

Sorry I made a mistake. Both (I think) are post mount - I'm much more used to flat mount and neither of these bikes seem to have normal flat mounts.

It is indeed a Triban RC520 (and a Genesis Tour de Fer)

Picked up the Genesis cheaply but I don't like triple chainsets at all and it has cable only disc brakes, so I'm using the Triban as a donor bike then rebuilding that up and selling it on, while hopefully getting a fairly cheap Genesis

CramCycle · 21-03-2023 08:27AM

https://www.boards.ie/discussion/comment/120375952#Comment_120375952

Very few new tools presuming you have Allen keys, flat head screwdrivers etc.

Only thing you won't have is a bleed set for the hydro brakes but to be honest, I bought one and 4 years in, haven't needed to use it yet, although you might if you start long alpine descents on it.

Jim2007 · 21-03-2023 12:59PM

https://www.boards.ie/discussion/comment/120382051#Comment_120382051

Thanks for the info. Yes long descents would definitely be in the picture as I live in the oberland and once you get out of the village it is a long descent to pretty much anywhere - I usually end up putting the bike on the train to get home these days ;-).

CramCycle · 21-03-2023 03:51PM

https://www.boards.ie/discussion/comment/120382988#Comment_120382988

So if you are doing heavy braking and going at race speed, the idea is it might cause the hydraulic fluid to heat up and possibly lead to air bubbles or issues. I can't comment on this as the longest descent I have done on them has been from the Sally Gap and I done very little braking. This said, whether it is simply a concern or an actual thing is not clear, as with many concerns you read about online, I haven't read any stories of it actually happening.

Jim2007 · 21-03-2023 08:36PM

https://www.boards.ie/discussion/comment/120383991#Comment_120383991

That does not sound good.... certainly over heating on a long descent in mid summer when the temps are in the high 20 or low 30s can be a thing.

CramCycle · 21-03-2023 09:27PM

https://www.boards.ie/discussion/comment/120385227#Comment_120385227

Like I said, these are claims on random internet sites but I've yet to meet anyone were this actually happened. The pros do it the last 3 years in world tours without issue, so don't make this a deciding factor.

blackbox · 21-03-2023 11:34PM

I expect that the fluid is designed for high temperatures and is very unlikely to boil, even on a very severe descent. Hydraulic disc brakes have been used for aircraft and cars for a long time and the technology is very mature.

Large bottle small glass · 22-03-2023 08:58AM

https://www.boards.ie/discussion/comment/120385993#Comment_120385993

Hydraulic fluid will inevitably contain some moisture and this is what will likely boil.

Brakes work on the basis of creating friction and therefore heat will be generated; this is obvious and indeed a selling point of discs and calipers especially for mtb/downhill use.

Unless it is a very long and technical descent I couldn't see it happening with a road bike (or unless a very nervous descender); although the small discs diameters on road bike don't give much leverage compared to mtb bikes or indeed cars but then again the braking demands are much much lower

magicbastarder · 22-03-2023 09:13AM

i've always thought brakes are amazing. in a few seconds they can absorb enough energy that would total your car (or bike) and continue working away.

DaveyDave · 25-03-2023 07:56AM

New bike isn't staying on the lowest gear properly. It clicks every few pedal strokes but doesn't jump a gear so that's fine but when downshifting it takes a few rotations to shift which isn't ideal when struggling on a 10% climb.

Don't want to take it back to the shop as I'm keen on riding it for the next few weeks. Deore 12 speed. Do I start with the limit screw, cable tension or just do it all from scratch?

marcuslally2 · 25-03-2023 09:07AM

Hope someone can advise here. Looking to change the disc rotors on my mtb, Shimano sm-rt64-s type to be specific. Looking online at a certain German bike discount website purchase of the replacement rotor has two variants, internal and external. Anyone know what the difference is between external and internal or does it matter?

magicbastarder · 25-03-2023 10:01AM

https://www.boards.ie/discussion/comment/120398768#Comment_120398768

does it only happen at one end of the cassette? if it was consistent across the cassette i'd say the general tension, but if it's simply failing to shift to the largest cog i'd suspect the limit screw is in too far.

magicbastarder · 25-03-2023 10:03AM

https://www.boards.ie/discussion/comment/120398908#Comment_120398908

a quick google shows that it might be internal lockring vs external lockring?

cletus · 25-03-2023 10:21AM

https://www.boards.ie/discussion/comment/120398768#Comment_120398768

As magic said, most likely a limit screw issue. Bring it to the shop, they'll have it sorted in a few minutes, and you won't spend the next few weeks being annoyed at the bike 😀

marcuslally2 · 25-03-2023 10:23AM

Thanks. It is internal I have as I use the Shimano locking tool/nut to remove the rotar

DaveyDave · 25-03-2023 10:44AM

https://www.boards.ie/discussion/comment/120399025#Comment_120399025

Only seems to happen at the lowest gear so I'll have a look at the limit screw.

https://www.boards.ie/discussion/comment/120399070#Comment_120399070

Ah sure I'll have a look myself this evening or tomorrow, I can't make it any worse! If I can't sort it I'll give them call. They're usually quite busy but I forgot I'm working nights next week, should be able to drop it in after a spin and collect before work another day.

cletus · 25-03-2023 10:49AM

https://www.boards.ie/discussion/comment/120399121#Comment_120399121

Here's a much used video that may help

https://youtube.com/watch?v=UkZxPIZ1ngY&feature=shares

paddie9 · 25-03-2023 03:06PM

Need to replace the freehub on my Giant SLR carbon wheel. However very hard to source one.

Number on it Z1620-1 does nothing in spares etc. Don't know the year.

LBS x 2 showed little interest in helping out. It looks very like sDT swiss. Anyone know

cletus · 25-03-2023 05:37PM

Bought a generic valve core removal tool, like in the picture below

It's crap. After maybe the 4th use, the jaws had spread, and the threads of the core were just cutting into the aluminium.

It seems like this is a rip off of the Park Tool version, so I was going to just buy that, but I wanted to ask two questions.

First, is the Park Tool one any good, or should I expect the same problems.

Second, does anyone have any recommendations for a decent core removal tool.

07Lapierre · 25-03-2023 09:16PM

https://www.boards.ie/discussion/comment/120399816#Comment_120399816

You know you can buy the bearings separately? its a bit fiddley to swap them out, but with a bit of patience its very doable.

dahat · 25-03-2023 09:26PM

You need to go to a Giant dealer who will be more than willing to assist I’m sure.

the 'there's no such thing as a stupid question' bike maintenance thread

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