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

nicksnikita

https://www.boards.ie/discussion/comment/119757962#Comment_119757962

Yeah the hub design doesn’t inspire any confidence. Even when fully reassembled properly, nothing tightens or clicks into place to tell you it’s done properly and ready to go.

But it has done away with the pawls and springs of the old design.

Probably a cost saving for Mavic at the end of the the day.

JMcL

https://www.boards.ie/discussion/comment/119755392#Comment_119755392

Precisely - I didn't know it was a thing until the freehub fell off, that's after having had the rear wheel out several times previously to put in the boot. They're set up tubeless so if I ever DO end up with a puncture on a crappy winters night I have several paths to ending up a blubbering wreck at the side of the road 😬

Mundo7976

Right, obvious whatever of the day. Fiercely annoyed. Cleaning the bike and found this crack near the derailleur hanger. It's on the inside of the chainstay & touches into the weld for the seat stay. Is there any chance of repair or is the frame fcuked? 😡

magicbastarder

i'm no expert, but that's a good straight line - is that where the chainstay may be bonded to to a separate dropout piece?

Mundo7976

If only. Its at the end of the chainstay itself & the line then runs through the weld for the dropout attachment. I guess my question is can a weld be done on it & who is capable of doing it?

I'd presume it might also explain my recent shifting issues!

magicbastarder

alu frame?

Mundo7976

https://www.boards.ie/discussion/comment/119771332#Comment_119771332

Yes

07Lapierre

https://www.boards.ie/discussion/comment/119771206#Comment_119771206

if it was, there would be corresponding line on the seat stay?

CramCycle

Is there any give in it?

Mundo7976

Yeah, doesn't take much effort to move it, clean break by the looks of it.

JMcL

There'd be a fair load potentially going through that, and alloy frames aren't noted for their weldability. I don't think I'd personally be overly happy with that under me, though I'm open to correction

magicbastarder

what make/model is it?

Mundo7976

It's a GT grade c.2015. As jmcl says above I'd be quite wary even if repaired (I think). I asked in one shop in Santry for opinion, & apart from trying to sell me a new bike, were of the opinion that its to be scrapped.

Will have to start scouring for a new frame at the very least!

magicbastarder

I wonder if that's the one I don't go to anymore. Wouldn't surprise me that they'd try a hard sell on a new bike, if it is. Was it a kiwi lad you were taking to?

You might be able to get a secondhand frame if you're (very) lucky?

Mundo7976

😂

One of the other ones, they're always at it.

Not looking forward to the hunt, cheers.

Mundo7976

I've a madcap idea.

I have a trek fx2 hybrid, frame a little heavier but no biggie.

Would it be possible/recommend to strip all components from both units and put everything on to the trek, frankenstein it a bit. I understand geometry will be a bit different, but willing to chance it.

?

CramCycle

It is weldable but it won't be as strong with just a weld. Might weld across it, it will be ugly but stronger. Problem you'll have is no bike shop will do that, you'll have to look for a fabrication place that is small and won't ask questions. It will be cash in hand with no warranty. I'd do it but I'm a cheap skate, more sensible people would tell you just to buy a frame and transfer stuff across.

Mundo7976

Yeah cheers, its not worth the hassle or potential of possibly making it more dangerous. I'll do the switcheroo and look at options in the coming months. At least it's this time of year when I'll be on the roads less

magicbastarder

https://www.boards.ie/discussion/comment/119776710#Comment_119776710

it's probably possible, but it'd be a bit weird cycling a hybrid geometry bike with drop bars.

you may not be able to transfer the crankset across though.

Weepsie

https://www.boards.ie/discussion/comment/119781670#Comment_119781670

What size frame is it. There's a free frame going in the adverts section

Mundo7976

https://www.boards.ie/discussion/comment/119783778#Comment_119783778

Nice find & thanks alot. Unfortunately not suitable 👍🏻

tnegun

https://www.boards.ie/discussion/comment/119752377#Comment_119752377

In case it happens to anyone else I figured out why the ratchet/freewheel was sticking I'd put it back together in the wrong order with the damping rubber on the same side as the spring. It's fine like this and spins normally until tightened into the frame it just locks up and won't freewheel I eventually noticed the mistake while watching a video on how to service the hub!!

mazdamiatamx5

What are people's thoughts on chain replacement, I have seen recommendations online that chains should be replaced when there is 1% stretch (ie 12 links measuring 12 and one eight of an inch) others say that when there is only 0.5% stretch (ie 12 links measuring 12 and one sixteenth of an inch). My current chain is running fine, no clacking no skipping, but I have new hub and cassette installed so don't want to run the risk of the cassette being damaged by a chain that is too stretched. There is approximately 0.6% stretch on the chain currently so was hoping to get another few months out of it.

Bike is standard 21 speed Carrera Crossfire hybrid, nothing particularly fancy or high tech.

magicbastarder

i usually wait till mine gets to about 0.75%

Trekker09

Have an issue when I take my rear disc wheel off to use my Tacx Neo. When I replace the wheel the disc is rubbing. The 1st time it happened I thought I might have tipped the brake lever when I was on Zwift, but it's happened again.

SRAM Rival Axs 12 speed groupset. If anyone has any ideas........

Thanks in advance

DaveyDave

I replaced my chain at .75%...that's the smaller measurement on my chain tool :)

CramCycle

https://www.boards.ie/discussion/comment/119792141#Comment_119792141

Simplest guess is you did tip the brakes. A large flathead screwdriver wedged in there and press the pads/pistons back should sort it. The other option is that the brakes are slightly misaligned but only barely. Loosen the attachment bolts, squeeze the brakes with the wheel in place and retighten the bolts. Only takes about 2 minutes to do. Sometimes they just move slightly, I had the same issue.

iwillhtfu

https://www.boards.ie/discussion/comment/119771189#Comment_119771189

What frame is it?

I found a crack in a canyon frame I had. It was about a month shy of 5 years old which is their warranty life and they replaced it FOC.

magicbastarder

Mundo mentioned it's an approx 7 year old GT bike.

Weepsie

https://www.boards.ie/discussion/comment/119792141#Comment_119792141

Sram brakes ship with a shim that you slot in there when there's no disc.