Any question answered...

I'll still go for bmx outer, never failed me once!

Would the Ride 100% from Aliexpress not suit?

Fluoro frame and polarized lenses.

You could spray can them too.

About £15

they're called linear brake cables. Not sure where you can get the by the meter, but there's tons on ebay. One should be enough to run a front brake but not enough for the rear.

As @fredtc said just eBay. I think the one I bought would just barely be long enough for drop bars › top tube › rear canti/caliper/V brakes, not discs though.

my polo bike runs 39x22 ratio, with 172.5 crank arms.
I'm getting some shorter cranks, ideally 160, so how should i modify the gearing to account for this?

32x18.

As of yet, no one has implemented Bluetooth audio streaming without degradation to audio quality. Therefore, recommendations are quite redundant.

Has anyone had to replace a B limit screw on a rear derailleur before? Are they standard M2/3/4? Could I pick one up from a hardware store?

105 5600 RD for note.

https://www.youtube.com/channel/UC7DQTjYICjBd5ZtLQU3Z1dQ
I quite enjoy this guy's vids, and using headphones can give you a good idea of what the speaker under test is capable of.

Given that most people are streaming mp3s or CD rips then APT-X HD is generally of a higher quality than the source.

(I don't have any recommendations for speakers though. There probably aren't that many as the SD slot will make the waterproofing trickier.)

As of yet, no one has implemented a small speaker that can accurately replicate the fidelity of a proper Hi-Fi system in a small portable speaker without degradation to audio quality. Taking this into account, you will notice that I, clearly, don't mind the loss of quality for this application. Therefore, your answer is quite redundant.

I'll look thanks.

Zing!

That actually common with those levers, it's nigh on diffcuilt trying to feed it through without taking the bar tape off.

TL:DR get some SRAM S500.

Yup! allen key skewer on top to make life easier.

Don't bother.

Drink another four beers, you'll be awesome.

© @skoota

Slightly left field;

What on earth are these kind of buckles called, and where can I buy them?

My various google searches have revealed nothing, I assumed they'd be called something like 'quick release ladder lock buckle'

1 Attachment

APT-X HD is not going to improve a lossy source. It's not going to improve a lossless source either.

Say what you see...

Webbing g-hook is what I'd call it. Probably loads of other names.

(double-post)

Fair warning to all: mathematical speculation below.

Your cadence at a given speed will be the same with any crank length. However, the speed at which your feet move (around the circumference of the circle traced by the pedals) will change. Power is given by P = F v where F is force on the cranks and v is the speed of your feet/the pedals moving. So if your power stays the same on the new cranks you're putting in more force on the pedals but moving your feet slower. Is this bad? I have no idea. But intuitively I feel like your knees might be more sore than usual.

If you want to maintain the same foot speed/force/power on the new cranks your cadence will have to increase by a factor of 172.5/160 (so from e.g. 90 to 97), as the distance travelled in one crank revolution is just 2π r where r is crank length. To maintain the same foot speed, power, force on pedals, bike speed etc. you would therefore have to gear down to about 39/24 or 36/22.

To take it to an extreme, if you switched to cranks that are 1mm long, you'd have to put a massive amount of force through them to maintain the same ground speed, so you'd gear way down. If you switched to cranks that are 1m long it would take next to no force to move them but you'd have a really jerky motion as your feet would be moving so fast, so you'd gear up. Makes sense?

Is it more important to maintain downward force at the pedals or cadence? I have absolutely no idea. Would be interested to hear anyone else's thoughts on the matter. I would be especially interested to hear what you think if you try riding the same bike with a 24 and your current 22 and see which you think matches the current feel best.

But this is all speculation and I really wouldn't recommend spending any more than a very small sum of money based on some dodgy maths done by an internet weirdo (me)

http://www.sheldonbrown.com/gain.html

Aliexpress to the rescue... I wasn't far off to be fair.