What's your top speed?

fuck that push through the pain!

ok sorry not average lets put it this way the distance from one place to the next is about 15 miles plus for about everything and i wanna get there fast (as near 30 minutes as possible) and as i wont be needing to stop and start a lot if at all i should be able to maintain a high speed

Are you planning on just riding 15 mile per day, stop check out the new town, role on the next day or do several blocks of 15 mile per day?

If it was me and I was fixed on flat ground, I'd have one high seventies / low eighties ratio and and one low to mid seventies ratio. Large flat areas = big wind, and sods law, it will be a head wind, hence the need for two gears. (This is minimal luggage e.t.c)

no i used to live in the area, now im going back to visit. but i need to go and visit certain people and wanna ride to and from so it will average to around 30-40 miles a day. i think your right with the GI's i am getting a 41t chain ring so i need just a 14t and 13t cog which will give me 77 and 83 ish

and as far a luggae goes i will have everything in a small string bag

Craney: are you going to be having luggage on your bike too? trying to keep up TT speeds with luggage, simply by the power of HTFU don't seem like a realistic plan to me!

I clocked my fastest ever recorded time on Friday: 42mph coming down a lovely hill in the Cotswolds. Lovely jubbly.

I'd go for a two tooth difference personally. 13 and 15 in your case.

no luggage on the bike. unless you count chro-mo drops as luggage

ok 15 and 13 will give me 71 and 82gi with 165 cranks and 23 tyres. i think 71 will be too low, but i know how much of a bitch riding into strong headwind is.

As long as you are not going for epic gearing track style you'll be okay whatever, it's nothing too epic, but fun all the same.

On the flat or the hill?

Hill. If I could do 56kph on a flat into a headwind there'd be a thread on here called 'Dov the Man!'

cheers tommy i think im gonna take your advice and get 13 and 15t

Hill. If I could do 56kph on a flat into a headwind there'd be a thread on here called 'Dov the Man!'

Just checking. :)

There's some total bullshit figures in this thread and I'm not talking about when I broke the speed of light on Friday's commute..

ok so i hit 39.8mph at Calshot on Saturday on 81" (45 x 15 and 166 rpm) this led to some interesting cornering lines and a 9.42 lap time, Legro hit 38.something and did a lap time of 9.41 shows how importent the right line is on a track for a quick tt time.

I don't think so, it's legit. I've emailed all UCI teams with a link to this thread.

I read an interview with a guy who rode a TT with Lance Armstrong and he said "Lance quickly got the bike up to 31mph and held it there"

Fuck that! I can uncomforably ride at 38-40kph for a while but riding at 48kph is fucking hardcore.

I got 34.6 MPH going downhill over the weekend with 48-18. I can nudge 30 on the flat for a very short time.

I am weak - I reckon I can only just nudge 30 on 46:16 / 165s.

In defense I do 'ave a bionic leg.

pretty sure me, marco, toby, harry, marcus, adam, nick and ev hit 35-40 mph on our way through the limehouse link tunnel today on a big downhill section, fastest ive ever been and fucking mental, i was spinning out to the MAX!

booshiit.

thats what you think ask any of them...
i dont think ive ever been so scared in my life........infact, i can prove it, anyone wanna do it themselves come the limehouse link is CRAZY

some context for my (affectionate cos I know you are fast and can spin) response..

ok so i hit 39.8mph at Calshot on Saturday on 81" (45 x 15 and 166 rpm) this led to some interesting cornering lines and a 9.42 lap time, Legro hit 38.something and did a lap time of 9.41 shows how importent the right line is on a track for a quick tt time.

I got 34.6 MPH going downhill over the weekend with 48-18. I can nudge 30 on the flat for a very short time.

I think the difference between 30mph and 34 mph let alone 35-40mph is fairly severe at our kind of gearing, at least where I am at the moment. I'm about where last_caress is in what I've managed to clock myself doing - downhill at 33 mph on 46/17 on the Rye ride last autumn I was wobbling like fuck - and after distracting myself to look down at the speedo I was a couple of crank turns away from catapulting into a hedge. I also suffered a bit for the remaining fifty-five miles as I pulled a few muscles spinning out like that going downhill. On the flat it's a bit easier to hit 30 and stay in control but not for very long for (I imagine) most riders in a typical mid-way gearing such as 70".

I don't see the point of people posting only their best geared times though, it's a different game altogether.

yea ive got no real clue to an accurate speed we were going, but i was told i was going 32 mph through a tunnel the other day as i said on this thread by some cabbie which james pointed out being over estimated more likely to be 28mph and that was me not spinning out to the max or going as fast as i could, going downhill in that tunnel was the fastest i've ever been by a very large margin as i had to relax and could in no way control my legs as i was on the lowest gearing out of the lot of us so im sure i wasnt going the fastest and i reckon it was at least 5mph faster then the first time i just said above so thats how i came to my reasoning :)

missed out a couple full stops there. and i could obviously be wayyy off

missed out a couple full stops there

Not to mention use of capital letters, spell check and several other punctuation marks.
;)

ok 15 and 13 will give me 71 and 82gi with 165 cranks and 23 tyres. i think 71 will be too low, but i know how much of a bitch riding into strong headwind is.

I find 71 GI about right for cycling pretty much everywhere. I think I average about 17-18 mph on the flat when riding at a comfortable cadence. Though this is a SS not a Fixed.

most ive hit on fixed is flat 30mph and 35mph downhill but ive done 59mph on my road bike but this was all when i was riding every day and not spending more time on my bmx than anything else
??

I find 71 GI about right for cycling pretty much everywhere. I think I average about 17-18 mph on the flat when riding at a comfortable cadence. Though this is a SS not a Fixed.
More like 20 mph. :)

35-40 mph would mean a cadence of between 170-200 rpm with 48-18 gearing.

If you were running a more track-like 49-15 gearing, it'd still be between 135-165 rpm.

Make of that what you will.

29.8 - I just can't break the 30 barrier.
Plan is to ditch the speedo when I finally do.
Perhaps next time I try I'll make sure I don't have a mobile and wallet in my pocket. In fact I think I'll even ditch the shorts. If that don't work then it's either waxing time or swap the rear cog.

I made the Kessel run in less than 12 parsecs this morning