Mechanics and Fixing Any Questions Answered

Do i need to add a chain link if I change my chain ring from 50/34 to 53/39?

Or is it a straight swap?

Ps. 11-34 cassette.

Depends how stressed the derailleur was in big - big I guess. id try and see how it goes

Yes, if you were already at the minimum length.

Thanks both.

If gears are in biggy-big and there's some flex in the derailleur arm I could be ok...

I'll check in the morn.

Muchas gracias.

We have housing but no workshop slots, in se24.

Another question…

My wheels are Vision Metron 40s from 2016-2018 with 6 bolt disc hubs.

I see plenty of centre lock to 6 bolt adaptors to attach a 6 bolt rotor to a centre lock hub, but I can’t find an adapter to go the other way - is there one? Can it be done?

This is on a C’dale SuperSix Evo Disc from 2018 which had a mish-mash of disc sizing.

There was talk a while back about how to get Mucoff and other plant based lube residues off bike parts.
I’m not saying this is the way forward, but I’ve just successfully cleaned a very black, very sticky and very clogged chain and cassette up.
How?
I hear you cry.
I filled an old sauce pan with about a litre of veg oil, in this case stainsbury’s cheapest of the cheap (my gawd that’s still not cheap now is it¿) put the chain and cassette in the oil. I then put the pan on the camping stove and a low/medium temperature and let it confit away. I got it hot enough to not want to put your finger in, but not a frying temp. I left it to cook for about an hour while I did other stuff. I them poured boiling water over the bits to rinse, then the normal degreaser, wash, dry cycle and they came out not spotless, but pretty bloody clean. All for minimal effort.
I’ve no pics because I didn’t take a before as I didn’t think it would work. And no after because I’d fitted them and they’d left the building before a thought to take one.
I also just used the same oil cold on a few splatters on the chain stay and dabbed it on, left it a while and rubbed it off, 95% ish came off.

is there one? Can it be done?

No, because no. Also, why would anybody in their right mind even contemplate swapping from the simple, cheap, strong bolt-on rotors to complex, expensive and weak splined attachment?

Are the axles (without the spanner flats) from a Shimano m540 or similar pedal a straight swap into an m520 body? I've got two damaged pairs of pedals I'd like to combine.

Look at the drawings and decide, to me it looks like it won't work because the lock bolt head of a 540 will interfere with the main body of a 520 before the pedal axle assembly is fully home
https://si.shimano.com/de/pdfs/ev/PD-M520-2235/EV-PD-M520-2235.pdf
https://si.shimano.com/de/pdfs/ev/PD-M540-2234/EV-PD-M540-2234.pdf

Thanks, it does seem like it won't work, I hadn't appreciated the bodies were different given both pairs of pedals are at the bottom of my spares box.

I am highly uneducated in the tech side of cycling…don’t know pros and cons of either system.

What a was considering was the choice of disc rotors. I only seem to have options for MTB ones and was thinking of Ultegra rotors as an upgrade.

Get Galfer, SRAM or something else. Lighter and a lot cheaper. Better system as well. We have been conned with centerlock, double price rotors

bon velo? can you sell the housing out?

Nope, no association.

There was talk a while back about how to get Mucoff and other plant based lube residues off bike parts.
I’m not saying this is the way forward, but I’ve just successfully cleaned a very black, very sticky and very clogged chain and cassette up.

Interesting. I have a couple of chains that need saving from muc-off muck.
Do you think a long soak in boiling water would work?

what’s the shop then? 😅

Thanks Netakure,

I’ll have a look at those discs. I have Swiss stop atm. They were a price based purchase, rather then performance.

Got to be worth a try, my other thought is bio washing powder and a long soak. That mucoff is meant to be plant based and bio wash gets heavy cooking stains off stuff, so??? I’ll try that next time as the oil was a faff to be sure.

OK, bare with me…

I run an exposure toro light and my mum wants the ebike version fitted to her bike. I’m not good with electrical theory so can someone look at my working out?

If the ebike like is the same brightness as mine on max (which it is) then it will consume 10,8000mah for running at max for two hours. If this is watt hr it would be 64.5? Her battery is 460whr so would the light use 14% of her battery over two hours?

presumably you mean 1o,800 not 10, 8000

what voltage is the bike battery

Lol, yeah. 5v but my working out was at 6v so it should be 54watt hours?

bare with me…

On a WNBR ride, or were you thinking of an FKK vacation? Probably not Studland, because I can't bear homophones.

Just looked it up. Never through it was bear. You’ll have to bear with my ignorance on more than one matter it seems.

Never through it was bear

Well, that's embarrassing 🙂