Any question answered...

Would be ding out rear stays on a track bike to fit a wheel damage it? It flexes but is tight it's a track hub that's been converted to fit an old racers spacing. But I now have a track bike so fitting it in there now.

Just remove the spacers.

I've been trying.. but was thinking of riding it to a workshop to get them to do it. Don't have the proper cone spanners at home.

And idea what size of cone spanner if need to for a spacer..? I could bio in past on way home.

Isn't that just the usual advice for road bikes, to avoid locking up the rear wheel?

Obvs not normally loaded with bike packing kit and 200kg of prime Aussie beef.

That doesn't make sense. If locking up was an issue they wouldn't leave the 160 on the front would they? The only thing I can find is clearance issues with people using post-mount Spyre calipers.

But all your weight goes forward during braking, its much harder to lock a front than a rear.
I can lock my rear wheel with shitty tektro long reach brakes but my front only locks for mad brown pants moments in the wet

^ This - 99% of your braking power is from the front, in fact under maximum braking force your back brake is useless as the rear wheel has effectively no contact with the ground (any more force and you start to endo/stoppie)

So? If the wheel locks, you're skidding.
If you skid the front, you're crashing.
If it's more likely that a larger disc locks the wheel, why would they use 160 front and 140 rear?
I think it's a clearance thing.

Anyway, I now have 160/160 installed.

They put that note on the site after I got in touch to say that the 160mm I fitted a) scratched the shit out of the frame whilst I was fitting the wheel and b) appeared to be rubbing the frame when I was out of the saddle and 'sprinting'.

Edit: There was, as far as I could tell, basically no way of getting the wheel in without it touching at some point, as there was about 1mm clearance between rotor and inside of chainstay once it was in. That's on a 63cm frame.

The difference between the force required to skid the front vs rear is massive - hence why you run bigger discs on the front (same on cars and motorbikes), in fact unless its icy or you have shit tyres in the wet then it's pretty much impossible to skid the front wheel on a bike(assuming vaguely sensible weight distribution) - you will lift the rear wheel before it happens.

https://drive.google.com/file/d/0B5klOPzi_xrQclM2bEdCSjhxMGhlZnphSHllaV9XWGFBWXo4/view?usp=sharing

So all of what I just said. Its a clearance issue that means you can't run a 160 on the back yes, but its still pointless. Its not a design fault, 140 is all you need on the rear coz reasons. @danb explains better than I

If you grab a handful of front brake on say a damp road, you'll lose the front.

So if the bigger rotor was really a safety issue they wouldn't have them on the front either.

I think their concern was due to fitment issues, not safety.

I reckon a bigger rotor on the rear makes more sense because I'm more likely to use it like a drag brake when it's slippery and that could be where heat becomes an issue.

Well, I've got a 160 on the back now. I just hope it doesn't interfere with anything, like wheel removal.

wheel removal

Can anyone inform as to what part of speech the word "is" is? I'm struggling with this. Is "is" an adverb?

Verb - third person present tense form of 'to be'. I am, you are, he/she/Brum/it is, etc.

I should note that Kinesis included 160mm front and 160mm rear flatmount to post mount adapters in the box with my frame and @bertocq's as well. I went out and bought a 140mm adapter whilst berto sweet-talked them into sending him one for free. Guess we were both 'early adopters', I don't know what they provide in the box now.

Although it looks like a tour, it's a race.

What sort/dimensions of generic o ring can I use to replace a lost one for a Rotor 24 crank?

Anyone here work in a school science dept?
When I was at school my cohorts and I had some jolly japes and cocked about but we never had access to all the things. Like all the chemicals in the prep rooms, the stop valve for all the gas to all the labs/classrooms and access to the hazardous chemical cupboard. If we had we'd have at the very least set something ablaze.
My question is having access to all the things is okay now then and H&S are just words?

Further to my semi-intergrated headset search, what are 'semi-cartridge bearings'?

http://www.chainreactioncycles.com/ritchey-comp-press-fit-semi-integrated-headset/rp-prod39377

If I shorten my crank arms by 25mm, should I raise the saddle by 25mm?

25mm? That's a lot

Duh, 2.5mm