What is your top speed???
 

Mine is 31 miles an hour on a giant defy road bike. :)

36 or 37 on my Motobecane Lechampion Ti. I can't break 40mph no matter what I do.

Best I've done is about 56kmh downhill with a tailwind on my 29er.

Another Pi**ing match? :notamused:


.. same speed as the rest of the Boeing 747..


or just by being on the planet , about

1,674.4 kilometres per hour (rotational) & 108,000 km/h (orbital)

I guess if that's how you see it.

While commuting? 30 or 31 MPH on the fixed-gear.

I've yet to prove Einstein wrong.

~570mph

You need to eat more cheeseburgers. It'll take care of that for you.

I've broken 40 MPH a couple of times on long downhills. Given a long enough hill, you're limited only by your aerodynamics, your weight and the rolling efficiency of your bike.

I ride with a couple guys who are 200lbs.+ and that's what they say. Really anything approaching 35 and I start to feel uneasy.

~31 mph of flat with no wind, but only for a few seconds. At that speed, about 630 watts is used to overcome air resistance. To hit 37 mph, I have to output about 1050 watts (1.4 hp) to overcome air resistance! A world-class track sprinter can output about 2000 instantaneous watts.

34.2mph to win a flat sprint on 48x15 fixed
48mph on long mountain decent on roadbike

I've hit into the 30's on a flat before, but not on my commute. No downhills, so it's all leg.

About 26 mph on flat and I've hit 32 downhill a few times.

Thatz how I see it too, when posted on a commuting forum.

Well then if we're talking strictly about commuting then it's *maybe* 30mph on a downhill, as were the other speeds I posted. Personally I don't think those speeds are anything to brag about. I probably get close to that speed every commute since that's the way I take. And I'm not necessarily trying, just coasting, so again nothing to brag about there.

By the way, its a discussion forum. Let's discuss.

pretty slow, pretty slow!

~462 millions mph (via webcam)

38MPH on my road bike, downhill. I felt pretty comfortable but when I told my wife. She was like "WHAT?!?!" that is so fast. My kids were impressed haha I too would like to break 40mph

Fastest commuting I have no idea since I don't have a computer on my commuter or mountain bike.

What is your top speed???
 

Always on the edge of being late to work, so often pushing it. OTOH I'm never fast in the morning :/
Fully loaded down a hill in New Zealand last year I hit my all time speed record.

Level ground/no wind, about 32 MPH. Same on both my road bike and my crappy/heavy hybrid - top speed really shouldn't depend on the weight of the bike, but aerodynamics. On the road bike I can SUSTAIN 32 MPH longer, but really not that long.

With a tailwind I can hit 34 to 36. Downhill I've been up to about 40. I just run out of gears with my old bike. I haven't had the road bike long enough to have it on a significant downhill in good weather.

Restricting this my flat commute only, aided by tailwind:
32.1mph on fixed gear
34.0mph on road bike

Commuting? 21.5mph, per Strava.

today?

66.8 km/h.

I was descending.

28 mph flat-no wind. 43 mph with the help of Issac Newton.

your top speed in whatever context plus 5 mph.

On flat ground, I don't know. Maybe about 45-50kmph (28-31 mph). However, there is a long downhill on my ride home where my max speed has been 75.5kmph (47 mph). That was on a very warm day with no wind. I'm too light to go any faster than that. :(

I've hit 45 mph a couple of times on a long, steep downhill with a tail wind pedaling like crazy in my top gear.

Apparently it's actually faster to not pedal when you're going that fast. You gain more speed from an aero tuck.

Spin, you madman, SPIN!!!!

Top speed on my regular commute route is 42 mph - coasting in a tuck down the hill that leave from my house.

Top speed on my secondary commute route is 48mph pedaling down the hill behind where I work.

And top speed overall is 50mph - also pedaling down the other side of the hill from my house (yeah, it sucks to have to ride home).

All riding a 2007 Tricross Comp.