Let's offroad / mountain bike / mtb / ride dirt

Assuming it's a continuous function of course ;)

So how does a 29er differ in it's LOG function?

So how does a 29er differ in it's LOG function?

The biggers wheels help you get over bigger logs.

Duh!

The 29>26 argument is like arguing over being shortchanged 2p.

#bringinthe36er

What am I missing, not least the joke? Is that hidden in the "that d²y/dx² is negative between x=26 and x=29" bit which I specifically don't follow?

This just means that if you graphed performance against wheel size, the graph would look like an arch where the highest point (max performance in this case) lies between 26 and 29.

Though I would've wrote second derivative as opposed to faffing around with superscripts ;)

Sorry if this spoils the view people have of him but I have met Tester in real life. He is much like he is on here, dry, funny and factual. This rubs some people up the wrong way, and I have witnessed this in the flesh, but much like on here nothing he said was offensive, just truthful. He is also quite self deprecating and very generous with his knowledge and advice.

I have met DJ in real life, he is much like he is on here...

Hopefully I called you a cunt to your face, if not let's go for a ride again soon.

sadly you failed to call me a cunt, though you may have bought me a sandwich at Swinley. Oh, the heady days...

That is the equivalent of going to a Sex Pistols gig and not getting spat on by Johnny Rotten, you are a virgin cunt, yet to be defiled.

I've yet to discover what Alkali is like in real life.

i await my imminent deflowering, Mr Rotten

I've yet to discover what Alkali is like in real life.

Soapy

Natural lube

I've yet to discover what Alkali is like in real life.

Dj however, does not actually exist outside of the interwebz.

I've yet to discover what Alkali is like in real life.

Huge, a bear of a man, with natural leadership qualities like Bruce Forsyth mixed with Brian Blessed.

Soapy

Huge

Hmmm..

Bruce Forsyth mixed with Brian Blessed.

Old, fat, white haired, loud voice, a bit creepy?

So much disappointment will rain down if I ever show my face round these parts

What am I missing, not least the joke? Is that hidden in the "that d²y/dx² is negative between x=26 and x=29" bit which I specifically don't follow?

I hope by now you understand, thanks to other people's explanations, what "d²y/dx² is negative" means. The joke is, as you surmise, in taking Smallfurry's vague first proposition (26 and 29 are different but equal) as a complete statement of something which has been mathematically proven, and then using questionable mathematics to "prove" that his second proposition (27.5 can be no better than 26 or 29) must be wrong.

I was thinking that the basic (too basic IMHO) assumptions that 29ers are faster in a straight line, and 26ers are faster on bends, and undulations. That if these differences are equal, and the trail contains equal amounts of each condition. You'd be equally fast using either bike.

.....or somfink.

TBH the biggest part of the rant was that the difference between the two size was just enough to be interesting. But not enough to justify another standard inbetween.

Sorry if this spoils the view people have of him but I have met Tester in real life. He is much like he is on here, dry, funny and factual. This rubs some people up the wrong way, and I have witnessed this in the flesh, but much like on here nothing he said was offensive, just truthful. He is also quite self deprecating and very generous with his knowledge and advice.

I think Tester comes across quite well.

Your losing it though. Thats far too nice.

Tester is a Pretty Cool Guy IRL. I really want to ride offroad with him...

I really want to ride offroad with him...

Euph.?

I was overthinking / wondering if there was more to it than I saw. Gutted you didn't go off on one over my deliberate missspelling of campy's full name tho'.

Now you're going off on a tangent.