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

nicksnikita · 22-08-2021 9:53pm

https://www.boards.ie/discussion/comment/117788394#Comment_117788394

Tidy. If you’re comfortable doing it, remove the caliper, remove the pads so they don’t get contaminated, clean the caliper and spray the pivots with wd40 or equivalent. She’ll be right as rain

nicksnikita · 22-08-2021 9:58pm

he

https://www.boards.ie/discussion/comment/117788544#Comment_117788544

Here’s what I would try......remove tyre and warm it up. I’d leave mine in front of the fire for a bit but a hair drier might do the trick as well. Fit the tyre and inflate to approx.20psi. Roll the wheel around, pushing downwards on the tyre. Fully inflate. Never fails

mosstin · 22-08-2021 10:44pm

https://www.boards.ie/discussion/comment/117790229#Comment_117790229

It snapped where the cage plate is connected to the rest of the derailleur. Cage plate itself is intact.

Elvis Hammond · 22-08-2021 11:17pm

https://www.boards.ie/discussion/comment/117790850#Comment_117790850

RD is a pretty vulnerable component, so you'd have to be sure it hasn't been accidentally damaged.

Acquiescence · 23-08-2021 6:06pm

What are peoples opinions on replacing tyres individually?

I've GP5000s front and rear, the front looks to have a lot left on it. There are literal chunks missing out of the rear, I've been meaning to change it for about 1000km. I think it was a dud tyre (to be read as I'm the bones of 90kg and spend most of my time on backroads).

I have two new ones in front of me on the desk.

f1000 · 23-08-2021 10:14pm

https://www.boards.ie/discussion/comment/117794188#Comment_117794188

this is my take - put the better tyre on the front. I do rotate tyres

cletus · 24-08-2021 4:59pm

Right folks, here's one for ye.

Out for a cycle the other day, and I noticed what seemed to be a clicking from the crank/bottom bracket area while coasting.

Had a look at it earlier on (I'm away from home, so no tools, stand etc). Watching the crank as the rear wheel is spinning, there is a slight bit of sway. I looked back at the cassette, and there is slight lateral movement while coasting (so the cassette isn't turning).

I honestly can't say whether or not I've seen that before, or if it's new.

Any suggestions?

hesker · 24-08-2021 5:10pm

Is it the wheel that is swaying?

And are you describing cassette wobble. That is normal enough if so

BTW all noises sound like they are coming from the BB regardless. I have a knocking problem in my own bike atm. Suspecting rough wheel bearings

cletus · 24-08-2021 5:28pm

Could be cassette wobble, it's moving in a slightly elliptical motion. Doesn't seem loose or anything.

Brian? · 24-08-2021 5:32pm

https://www.boards.ie/discussion/comment/117798228#Comment_117798228

Take the cassette off, make sure the 10mm bolt that holds the free hub on is tight. Put the cassette back on and see it it’s any better.

Richard Hillman · 25-08-2021 6:03pm

Just want to give an update on my issue in case it helps anyone else. Thanks for the help btw.

Essentially I wasn't overinflating the wheel. I was just using a hand pump and thinking I was pumping it up really hard but I wasn't really. I bought a foot pump with a pressure gauge, actually pumped it up as hard as it would go and the tyres popped into place. I lubed it up inside with some coconut oil before it. The noise of the pop was beautiful.

Don't know how I will deal with it if I am out in the middle of nowhere without the footpump but it's a start.

Cheers.

25-08-2021 6:28pm

I'm trying to get a better bike fit and one of the most important steps is to measure the saddle height I know the suggested method is measure from the centre of the bottom bracket to the top of the saddle. My seatpost has a measurement scale on the back I presume the various numbers in centimetres and millimetres refers to the distance from the bottom bracket the seatpost is made by canyon.

Hope I explained that ok.

Squidgy Black · 25-08-2021 8:40pm

https://www.boards.ie/discussion/comment/117803110#Comment_117803110

Those markings are usually just distances on the seatpost from the minimum insertion point so you can easily measure changes

Brian? · 25-08-2021 9:57pm

https://www.boards.ie/discussion/comment/117803110#Comment_117803110

The critical thing is your knee angle at the bottom of the pedal stroke. There are apps you can film yourself on a turbo trainer that will allow you to make the correct adjustments. Is that something you can do?

Or it’s actually really worthwhile splashing out on a proper bike fit.

07Lapierre · 25-08-2021 10:23pm

https://www.boards.ie/discussion/comment/117798228#Comment_117798228

If the clicking noise is present when coasting ( not pedalling), it's not the BB. It's your wheel bearings. Rear wheel most likely.

cletus · 25-08-2021 10:29pm

https://www.boards.ie/discussion/comment/117803980#Comment_117803980

It's not clicking in cadance with the wheel rotation, maybe every three revolutions of the wheel, which led me to think chain/front derailleur/crank.

I can feel it on the crank arm, it's almost like a hitch or a catch

Seth Brundle · 28-08-2021 6:54pm

Planning on changing my 11-28 casette to something a bit more sympathetic to climbing such as 11-30 or 11-32.

To my knowledge, I have the short rear derailleur as part of my 105 groupset

So my question is, whilst I know I need to use a longer chain so this will be replaced, will the casette fit with my current derailleur (maybe adjusting the B-tension screw) or do I need new hardware?

Am I better off moving to the '30 or the '32 given that I do enjoy quick spins on normal terrain around Dublin/Kildare?

magicbastarder · 28-08-2021 7:21pm

a 105 short cage (5800 anyway) has a stated max of 28 teeth, but i've seen it claimed many times that this is quite conservative and many people have gotten it to work with a 30 tooth cassette. i wouldn't risk 32 teeth with it though.

hesker · 28-08-2021 9:23pm

https://www.boards.ie/discussion/comment/117804006#Comment_117804006

Sounds like a problem with your cassette/chain/RD. Worn or needing adjustment?

I solved my problem but I’m left with another. I’m trying to get a Shimano 11 speed groupset to play nice with a Campy type wheel/freehub using a new Miche cassette and new KMC chain. Perfect in all gears except when moving from cog 2 to 3 when on the big ring.

29-08-2021 9:52pm

I recently came across the website myvelofit.com

It's a bike fitting tool that uses Ai apparently it's been trained on data from thousands of previous bike fits.

I've made the saddle height and set back changes it has recommended however it still wants me to move the saddle back 5mm

However I think I might have reached the limit of my saddle setback range?

It also wants me to increase my stem length by 10mm but I'll wait until the setback is done first before continuing. The good thing about the service is you can request a manual review by a qualified fitter.

magicbastarder · 29-08-2021 9:56pm

my gut reaction is the adjustments being suggested are too much. and yes, you can't push the saddle back any further. did you feel you were sitting too far forward to begin with?

AI is not a panacea.

hesker · 29-08-2021 10:04pm

That doesn’t sound right unless your bike is way too small for you.

I like the bike fitter guy within this video. Fore aft saddle position is important to get the right balance between load on quads vs hamstrings. As well as weight balance between your hands and seat

https://youtu.be/ZX3fKolI25Q

Edit: forgot the link. Neill Stanbury is the guy’s name

It’s worth checking out his other videos too. Ultimately a face to face bike fit from a respected fitter is the best option.

29-08-2021 10:31pm

Thanks I don't think the frame is too small for me, canyon used to have a detailed questionnaire on their website that asked you to measure your self in different places and then would suggest a size based on those measurements I'm a size small according to them.

I definitely feel like I'm sitting better on the bike right now before making the adjustments before I was right up on the nose and had a lot of weight on my handlebars.

It's still my intention to visit a reputable bike fitter when able.

Just incase anyone wonders what the software does here is my video, also the garage isn't mine!

https://photos.app.goo.gl/ejuQ6AbL8weRjwKG6

hesker · 30-08-2021 8:29am

It might feel better because you’ve taken weight off your hands but that may not be the best way to go about it. You could end up over taxing your hamstrings and you’ll feel that on longer rides. Higher bar height could achieve the same without this issue or develop your core strength to cope.

30-08-2021 12:16pm

I definitely need to improve my core strength, unfortunately however I don't think it's possible to raise my handlebars any further my stem is already at its maximum height.

Someone I know did suggest a seatpost with a longer lay back the one I have only goes back 25mm but Canyon do have one with a 35mm lay back. Does anyone know of any other brands of seatpost that can be set back further than the standard?

Brian? · 30-08-2021 5:51pm

https://www.boards.ie/discussion/comment/117822599#Comment_117822599

Honestly, it seems like you bought the wrong size bike. The adjustments you’re making simply aren’t logical at this point.

at1withmyself · 30-08-2021 6:03pm

https://www.boards.ie/discussion/comment/117822599#Comment_117822599

The seatpost you have looks like an inline seatpost.

Assuming it's a standard 27.2 then you should be able to borrow one with 25mm set back. Or buy a cheap one.

I think it's worth trying. Also you could get a cheap stem or again try borrow one. Then if it works out invest in better quality ones if needed.

at1withmyself · 30-08-2021 6:08pm

https://www.boards.ie/discussion/comment/117824344#Comment_117824344

Just curious why you think an increase of 10mm on stem length and increasing layback on a seat are not logical? I would have thought 30mm or so would be fairly standard so 10mm should be no problem.

As everyone has different and unique dimensions then 1 size does not fit all.