OK, really, top speed on the flat?

SimonAH

In the SCR thread I'm hearing lots of very high twenties. The odd low thirties.

I'm riding fixed on my main bike and spin out at 26 according to my 6 sattelite GPS. Reckon I could pull a few more mph on the roadie in top, but haven't touched it in a few months so the theory is unproven.

What can you kiss?

EKE_38BPM

Done around 120 mph.









Oh on a bike.... High 20s, low 30s briefly. I've set off the odd speed camera, but usually gradient assisted.

bigmat

Hard to know whether you're on the flat or not really, have hit mid 30s in Richmond Park, think it was level but not sure. Definitely a big tailwind though!

Buckled_Rims

Depends on loads of factors. Road condition, surface smoothness, wind direction, heat, tyre pressure, aerodynamics, height above sea level, etc....

My limiting factor seems road smoothness. I can easily keep up with cars on flat smooth roads, buy as soon as the surface gets bumpy, its down by 5-7mph.

I've even set off my local 30 speed sign (No cars behind) for fun.

Wrath Rob

With no wind I can hold 25 for a while, I can cruise at 23 for most of the commute. On the flat I can get just over 30, briefly. If there's something to get a draft from, like the 3 police vans on Embankment this morning I can do 30 all day

dilemna

186mph.

jds_1981

Buckled_Rims wrote:

I've even set off my local 30 speed sign (No cars behind) for fun.

I've never been convinced that those signs are well calibrated.

SimonAH

Interestingly, and this is based on solid evidence using my digital speedo on my motorcycle (which I've calibrated against six sattelite satnav and I know to be spot on) you need around 34mph to set off those cameras - so you've been zooming sir!

asprilla

I've set off one of those signs saying i was doing 26mph when my gps said i was doing 22mph.

As for top speed, same as Wrath Rob.

london_scottish

flat road can manage 30 for about a mile or so, helps if there are cars in the near distance to use as a stimulus. Managed 33 this morning through New Cross on the new bit of road but I think thats slightly downhill.

Normally can sit around 22ish quite comfortably

Headhuunter

SimonAH wrote:

Interestingly, and this is based on solid evidence using my digital speedo on my motorcycle (which I've calibrated against six sattelite satnav and I know to be spot on) you need around 34mph to set off those cameras - so you've been zooming sir!

That's because there's always about 10% leeway on all speed limits, I think that's pretty much police policy because back 40-50 years ago speedos in cars could easily be inaccurate by 10% so they gave people the benefit of the doubt. Obviously technology has moved on since then but the leeway is the same.

graeme_s-2

I hit 88mph on the way home last night and ended up in 1955!

The problem with this is how flat is flat? Even a slight gradient can make a big difference, and then you have issues of wind and drafting.

jds_1981

SimonAH wrote:

Interestingly, and this is based on solid evidence using my digital speedo on my motorcycle (which I've calibrated against six sattelite satnav and I know to be spot on) you need around 34mph to set off those cameras - so you've been zooming sir!

Not camera - the signs that light up to indicate you're going too fast (Which is what I believe the OP was talking about.) Many a time going under 30 (based on my speedo, satnav & talex)

Headhuunter

Graeme_S wrote:

I hit 88mph on the way home last night and ended up in 1955!

The problem with this is how flat is flat? Even a slight gradient can make a big difference, and then you have issues of wind and drafting.

Talking of which I'm going to watch the original Back to the Future on the big screen in Covent tonight! Retro.

dhope

I reckon similar to most. Standard commuting speed seems to be about 20mph, upto 25mph if passing, 27mph if pushing a bit, but that seems to be almost regardless of whether there's a breeze or bit of an incline etc. GPS reckons I'll push past 30 occasionally and expect that'll be with a kind wind, or a little tow or similar.

CXXC

dhope wrote:

I reckon similar to most. Standard commuting speed seems to be about 20mph, upto 25mph if passing, 27mph if pushing a bit, but that seems to be almost regardless of whether there's a breeze or bit of an incline etc. GPS reckons I'll push past 30 occasionally and expect that'll be with a kind wind, or a little tow or similar.

+1 my sentiments (and speed) exactly sir

graeme_s-2

Headhuunter wrote:

Graeme_S wrote:

I hit 88mph on the way home last night and ended up in 1955!

Talking of which I'm going to watch the original Back to the Future on the big screen in Covent tonight! Retro.

I went to see it in Covent(ry) last night, which is what inspired my comment. Enjoy, it's worth seeing on a big screen.

Kieran_Burns

Yeesh.

I cruise between 16 and 18 most days. I'll see 23 when I'm pushing but need any kind of downhil to be comfortable over 20. :oops:

asprilla

Kieran_Burns wrote:

Yeesh.

I cruise between 16 and 18 most days. I'll see 23 when I'm pushing but need any kind of downhil to be comfortable over 20. :oops:

It's all the cape's fault.

Clarion

I don't understand old numbers (I was born post-Enlightenment ).

I like to ride at 30kph (20mph?), but go up to 35kph on a good day, and have touched 40kph on the flat, though that's rare.

I'm not one of the fastest out there, but one of the faster in the peleton along CS7. I

SimonAH

30kph = 18.6 mph
35 = 21.7
40 = 24.9

jonginge

Wot Mat said.

I regularly do 32+ up millbank but there is a nice little ramp going past the morpeth: free speed

Headhuunter

Graeme_S wrote:

Headhuunter wrote:

Graeme_S wrote:

I hit 88mph on the way home last night and ended up in 1955!

Talking of which I'm going to watch the original Back to the Future on the big screen in Covent tonight! Retro.

I went to see it in Covent(ry) last night, which is what inspired my comment. Enjoy, it's worth seeing on a big screen.

I meant Covent Garden! I saw it on the big screen back in 1985 on my 13th birthday.... Damn I've just revealed my age...

cjcp

JonGinge wrote:

Wot Mat said.

I regularly do 32+ up millbank but there is a nice little ramp going past the morpeth: free speed

Bit less than these lads.

UndercoverElephant

On the flat, no wind, nice road surface: Cruising speed of about 20 - 22 mph, fast cruising 22 - 24mph, full-blooded SCR/dicking about? Whatever it takes? I can hit 33 most times when required.

CXXC

SimonAH wrote:

30kph = 18.6 mph
35 = 21.7
40 = 24.9

all this time i've been hitting 40kph and thinking it was 25mph when its actually 24.85mph

dhope

Headhuunter wrote:

Graeme_S wrote:

Headhuunter wrote:

Graeme_S wrote:

I hit 88mph on the way home last night and ended up in 1955!

Talking of which I'm going to watch the original Back to the Future on the big screen in Covent tonight! Retro.

I went to see it in Covent(ry) last night, which is what inspired my comment. Enjoy, it's worth seeing on a big screen.

I meant Covent Garden! I saw it on the big screen back in 1985 on my 13th birthday.... Damn I've just revealed my age...

Worryingly, I calculated the 38 and the thought "about 15years older than me then" flitted through my head. Then I remembered I turned 29 a month ago and that's really not 15 years at all. sigh.

Headhuunter

dhope wrote:

Headhuunter wrote:

Graeme_S wrote:

Headhuunter wrote:

Graeme_S wrote:

I hit 88mph on the way home last night and ended up in 1955!

Talking of which I'm going to watch the original Back to the Future on the big screen in Covent tonight! Retro.

I went to see it in Covent(ry) last night, which is what inspired my comment. Enjoy, it's worth seeing on a big screen.

I meant Covent Garden! I saw it on the big screen back in 1985 on my 13th birthday.... Damn I've just revealed my age...

Worryingly, I calculated the 38 and the thought "about 15years older than me then" flitted through my head. Then I remembered I turned 29 a month ago and that's really not 15 years at all. sigh.

Actually I'm 37 until Dec.... Goddamit at this age you cling to every year as long as possible! So only 8 years 9 months between us....

rjsterry

JonGinge wrote:

Wot Mat said.

I regularly do 32+ up millbank but there is a nice little ramp going past the morpeth: free speed

Indeed, Millbank is not flat in either direction I've scraped just past 32mph once there, but I wouldn't count that here. Neither is DSC. I reckon Vic. Embankment between Temple and Blackfriars is not far off, and I've touched 30 on occasion along there, but it usually needs to be a Monday morning, with another cyclist or scooter acting as the hare.

CiB

There's a bit of road between Botolph Claydon & Calvert that's baby smooth, downhill in both directions and always has a favourable wind at either end of the day. I usually expect to see min 27mph along there for a good way before it starts to ramp up a little and the speed drops to the low 20s for a short while.

Normal crusing - anything below 19 is a disappointment, low 20s is good but an effort to keep up, and that silly mantra of hitting 30 on every ride still sticks with me, so I do.

cjcp

rjsterry wrote:

JonGinge wrote:

Wot Mat said.

I regularly do 32+ up millbank but there is a nice little ramp going past the morpeth: free speed

Indeed, Millbank is not flat in either direction I've scraped just past 32mph once there, but I wouldn't count that here. Neither is DSC. I reckon Vic. Embankment between Temple and Blackfriars is not far off, and I've touched 30 on occasion along there, but it usually needs to be a Monday morning, with another cyclist or scooter acting as the hare.

There's a tailwind tonight, so time to put the hammer down to find out .

Dinner plans tonight, so the training session prescribed by my coach for this evening's trip home is called "Don't You Dare Be Late".