Orient Express - Cheap Chinese Rims / Wheels / Forks / Frames / Cranks / Etc

outdoor track and cycling to the track (about a 2km commute each way)

25s on 25s, in my opinion, but the trackies might disagree ¯_(ツ)_/¯

Lol. 25's on a track. Why not 28's or 32's?

23's on 23.

Because less rolling resistance over 23s

Weird that you never see anyone on a 25 ever on any track isn't it? In fact, really weird that people rarely ride anything bigger than 22... almost as if there must be a reason...

almost as if there must be a reason...

Scoble doesent do track?

if you specify no brake track, they won't come with a brake track ( ͡° ͜ʖ ͡°)

they really are very cheap. weird

I said 25 on 25 mainly cause it's an outdoor track and he's riding to it; how much aero gain is there to be had between the two as long as the rims match? Obviously the answer is 20c tubs but ¯_(ツ)_/¯

@swedeee I fancy crabby wheels for my track, cross and road bikes, and could get them all sorted for the price of a single 808 rear wheel... Deffo worth a punt. If I had the cash I would have had some yonks ago.

Obviously the answer is 20c tubs

20 front 22 rear. All you need. I'm on 20mm f+r for outdoor TTs including 100s and (gasp) I'm still alive.

Why tubs for track anyway? Current clincher tyre compounds are proving to be just as fast, maybe faster in tests and tubeless probably even faster.

Anyway, my outdoor track/training wheels are 23 wide with 23mm tyres. I've been reliably informed that 23 tyres with 25mm carbon rims or 25 tyres with 28mm carbon rims is optimal as it's the internal width that is important. 25mm wide carbon clincher rims should have a maximum of 18.5mm internal width, whereas 25mm rims should have an internal width of 19.85mm.

tap me if you want to group order .. London tho

Group order, you say? From which seller, of what?

k

Ok, I'll bite. A few reasons off the top of my head:

You're all talking about road pressures here. A really fast tub (pista evo cl) is still faster than a clincher and can be safely run at very high pressure 200psi +, making the rolling resistance significantly lower. Hardly any of the tests use these high pressures because only track riders use them and no-one cares about track. These tests are done and published to sell new wheels and tyre systems to mamils/triathletes.

Before we get into whether you need really high pressure or not - think about what it's like to ride a tyre with less than 100psi in it at high cadence on the rollers. Horrible. It's also worth noting you're more likely to get a perfectly round tub than a clincher, which makes a huge difference at high pressure. You feel every little lump and bump.

Tubs handle much better if you puncture them than a clincher - you can safely ride a deflated tub for long enough to slow down and get off the track. Same cannot be said of a clincher.

I'm sure that if there were any benefit to riding clinches you'd see GB/Holland/france etc using them.

I want 4 x <300g 24mm carbon tub rims if you're ordering from somewhere.

It's also worth noting you're more likely to get a perfectly round tub than a clincher

Incorrect, it's the other way around

Mavic say

widening the rim for aero benefits is really efficient as long as the tyre remains narrower than the rim’s widest point.

not what I had been led to believe

My understanding is that due to the handmade/sewn nature of tubs even the highest end aren't completely uniform. Whereas clincher construction is a much more automated process.

Plus the issue of glueing tubs perfectly straight without bumps etc is an added complication.

Would still use tubs on track tho.

I did a little lol at the idea of using tubeless tyres on the track. Can't see any safety problems with tubeless gunge getting all over a wooden track (or an outdoor one for that matter). Not to mention the look on the faces of the coaches when they realise you've slimed their half a million quid's worth of pine.

cn*carbon finishes

no idea which I want. maybe UD matte

ud matte always

Always, ALWAYS UD matte.

In on a ldn dropship if others are ordering.