Fixed Super Light Super Safe

Just get an alu sprocket. I have a alu 17t and its lasted far longer than I expected.
http://urbanvelo.org/velosolo-aluminum-track-cog/

Just get a 15T, together with a 40 tooth chainring.

If you plan to go with deepish rims, get the non-cutout chain ring. Simples.
Good idea on the alu

But 40/15 is only 3 skid patches :-(

I got an email back from Fibrelite and they say that they can only do 38T on a 130 BCD annoyingly.

non cut out?! You mean *gain *2 or 3 grams?! Furry, I am disappoint!

why skidding when you running brakes?

41 T seems to work better...

15 patches and 71GI

Eingang, I like to skid :-) And im only running an emergency front anyway.

I'd go for the 38x15, it has the forum long ride approved 66 GI

will be lighter too :)

is that forum approved?

Who rides 66GI?

38/15? are you living close to the alps???

for long fixed rides over 100 miles, 66 gear inches is a blessing on tired knees

pete and oli both ride that gearing, and they do very very long miles

DD on 48/17 wasn't a problem either (flat though)

DD on 48/17 wasn't a problem either (flat though)

as did i, but as you say- its flat!

just like Chainbreaker's feeding ground

Alp du londres

just like Chainbreaker's feeding ground
huh?

38T
15T
15 sid patches
68.4 GI

non cut out?! You mean *gain *2 or 3 grams?! Furry, I am disappoint!

Will be stiffer, and more importantly look bad ass between deepish carbon rims.

41 T seems to work better...

15 patches and 71GI

Eingang, I like to skid :-) And im only running an emergency front anyway.

Do this then.

I do 100km rides frequently on 74 GI. But then I dont ride fixed in town so much, so dont have to deal with stopping all the time.

Tester will know.

Yes, after you've added the adaptor to fit normal bars the Vision lever ends up heavier than the SRAM TT900. Also, the Vision ones are horrible to use.

Im probably making a big mistake here, but I disagree mdcc. For the same leg extension, a longer crank arm will mean your saddle will have to sit lower. When the crank is at 6oclock, the distance between the spindle and top of saddle should be the same for all crank lengths. So 180mm crank would need 10 mm lower saddle than 170mm. This is what scherrit at bike whisperer confirmed to me too.

Yes, if you keep the same leg extension, but that's not what limits most people's position, it's hip angle closure. If you use 180mm cranks and lower your saddle 10mm to keep the same leg extension, your foot will rise 20mm closer to the saddle at top dead centre, which has the same hip closing effect as lowering your saddle 20mm without changing cranks. Assuming that lowering the saddle improves CdA, surely you'd be better keeping the 170s and dropping 20mm rather than switching to 180s and only being able to drop 10mm?

Will be stiffer, and more importantly look bad ass between deepish carbon rims.
its actually

53 x 130 Lightweight 2 chainring - 52 grams
53 x 130 Aero chainring - 90 grams
53 x FSA Carbon Pro Team total aero chainring - 123 grams

And will be a total sail!

Yes, after you've added the adaptor to fit normal bars the Vision lever ends up heavier than the SRAM TT900. Also, the Vision ones are horrible to use.

that's the reason why i kept my tt900 lever instead of changing to the vision lever

for long fixed rides over 100 miles, 66 gear inches is a blessing on tired knees

pete and oli both ride that gearing, and they do very very long miles

Indeed. I actually ride 68", slightly higher than Oli, but the general rule is don't go over 70" if you want to do actual hills or longer rides.

close to be right, but it always depends on your legs.

i was running 45/18 on the way to bcn, but a friend of mine rode 48/15 and it worked well for him.

I believe the vision bar end levers are a weird size and only fit vision bars. You may be able to shim but im not sure. Tester will know.

Also - needs moar spacers.

]Sram s900[/B] carbon tt levers, 99g a pair

Yes, after you've added the adaptor to fit normal bars the Vision lever ends up heavier than the SRAM TT900. Also, the Vision ones are horrible to use.

Yes, if you keep the same leg extension, but that's not what limits most people's position, it's hip angle closure. If you use 180mm cranks and lower your saddle 10mm to keep the same leg extension, your foot will rise 20mm closer to the saddle at top dead centre, which has the same hip closing effect as lowering your saddle 20mm without changing cranks. Assuming that lowering the saddle improves CdA, surely you'd be better keeping the 170s and dropping 20mm rather than switching to 180s and only being able to drop 10mm?

that's the reason why i kept my **tt900 **lever instead of changing to the vision lever

So the Visions are out.

And there is a resounding yes to s900

Is this the best/weight?
Is there lighter but just as good?

Edit, im miles behind coz my phone is being slow.

As you were.

Indeed. I actually ride 68", slightly higher than Oli, but the general rule is don't go over 70" if you want to do actual hills or longer rides.

I've been settled on 48:17 (74.1 GI) for years now. I dont attack the proper mountain roads on this (I have 41:26 for full on ascents). But I use my fixed for the most part, for out of town rides of 50 - 100 km. The word undulating doesnt even begin to describe the landscape up here.

IMHO its a matter of taste, and muscle type.

close to be right, but it always depends on your legs.

i was running 45/18 on the way to bcn, but a friend of mine rode 48/15 and it worked well for him.

Exactly fast-twitch/ slow-twitch, and all that malarky.

its actually

53 x 130 Lightweight 2 chainring - 52 grams
53 x 130 Aero chainring - 90 grams
53 x FSA Carbon Pro Team total aero chainring - 123 grams

And will be a total sail!

41 is a fair bit smaller then 53 though. So differences in stiffness, and weight will be far less. I'd get the standard aero. Anything else is going to look bloody odd with your cranks.