How fast can you sprint on the flat?

[tongskie01]

Typical sprint speed 32-35mph. I suspect with most of us it limited by gearing (as well as leg power). My bike certainly has a compact chainset with a max 50T x 12T, but perhaps at full sprint with 53x11 this could be better. I doubt I will ever find out unless I borrow someone else's rig. Not going to splash to the cash for a theory!!! better to work on my power output instead.

my highest gear inches is 99. yours is 109. if you could spin fast enough you could reach up to 45mph or even 50mph. the only limiting factor is the drag.

 

[wiggydiggy]

10, 12 if I see the ice cream van in front of me

 

[kevin_cambs_uk]

30 mph but only for a few seconds !

 

[Moodyman]

I hit 32mph and 34.5mph on two separate occasions but had a strong tailwind on both occasions. I could have gone faster, had I not become paranoid about doing such a speed with minimum effort.

On a still day I could get up to high 20s and hold it for about 30-60 seconds. I prefer riding slower for longer though.

 

[steve52]

38mph on a good day but this is the peak can hold 35 for 50 meters maybe? this is with me compact

 

[dodgy]

Sometimes it's not that obvious if you're on the flat or not. Certain roads give a false impression that you're on the flat due to visual cues etc. There's a road near me that convinces your brain that you're going slightly uphill, but on inspection via GPS etc, you're actually still on the flat.

In summary, I've no idea how fast I've been on the flat Even a 0.5% decline can have a considerable effect on your speed, but you might not be aware of it at the time.

 

[col]

I was clocked at 36 by a mate on a motorbike many moons ago.

 

[Crackle]

I was clocked at 36 by a mate on a motorbike many moons ago.

What did he clock you with, a tyre iron and did you fall off?

 

[Matthew_T]

People have been talking about chainrings and even though I only have a 7 speed bike, whilst going down a long downhill section last summer, I could reach 40mph easily. I want to reach 50 but that will require some serious spinning! (The road is pretty empty as it is disused, so it is relatively safe).

Tonight I might have a go and really see what speed I can get. There is one section of road along the prom which I enjoy and can easily hit 25 on.

 

[totallyfixed]

The other day riding into a headwind, up a slight gradient I got up to a maximum speed of 14.8mph, so there

 

[col]

What did he clock you with, a tyre iron and did you fall off?

His speedo, and why would I fall off?

 

[Headgardener]

Some where between 15 and 17 mph if i try hard enough. Although I have reached 28 mph freewheeling down Frost Lane which is near me.

 

[gaz]

My top so far is 37mph. I could go faster if I had a tow up to around 35mph.

 

[Crackle]

His speedo, and why would I fall off?

If someone gets clocked, it means he or she got hit and didn’t see it coming until it was too late.

I was making a poor funny.

 

[col]

If someone gets clocked, it means he or she got hit and didn’t see it coming until it was too late.

I was making a poor funny.

Yeah sorry I clicked after posting, was trying to figure it out too much.