What's the fastest you've gone on a flat?

nitrogen · 23-09-2010 4:34pm #1

As opposed to the other downhill thread.

Were you on your own or in a group?

Kav0777 · 23-09-2010 4:37pm

you should never cycle on a flat, you'll ruin your rims!!

iregk · 23-09-2010 4:51pm

got up to 280kph on the auto bann 2 years ago. wouldn't say i was in a pack but there were plenty of other cars on the road at the time.

karlmyson · 23-09-2010 5:14pm

60.5kmph on the line in a sprint into Kinsale one Saturday morning in July this year.

The sprint point being the 50kmph speed limit sign 600m after you cross the Bandon river road bridge coming into Kinsale on the flat from the western side of town.

Dr_Colossus · 23-09-2010 5:32pm

How flat is flat, a road may seem flat but could have up to 1% descent which will have a great effect on overall speed. Don't think this is going to be comparable given people's different perceptions of what flat is.

karlmyson · 23-09-2010 5:45pm

You're quite right of course Dr Colossus. A -0.5% grade makes a huge difference to speed compared with a perfectly level grade.

My one is genuinely flat for the last km.

It's a classic sprint point, used by many Cork based clubs on training rides. Top speed there is determined by wind direction more than anything else.

cdaly_ · 23-09-2010 9:43pm

Fastest I ever went on a flat was 35kph as I careered across the road before swan-diving onto the pavement. All this 'cos of a front wheel blowout...

kenmc · 23-09-2010 10:59pm

Aye, I shudder to think what'd happen if I flatted coming over Sally for example

Beasty · 23-09-2010 11:22pm

Without drafting, I reckon I've been up to about 52-54kph or so on the track

That puts me about 215kph slower than Fred Rompelberg, but he did have the benefit of drafting a dragster:

billy.fish · 24-09-2010 9:09am

kenmc wrote: »

Aye, I shudder to think what'd happen if I flatted coming over Sally for example

I reckon she'd get quite angry.

I'll get my coat....

Jawgap · 24-09-2010 9:31am

Just checked.........according to my Garmin, the fastest I've ever gone was 73456.8976 km/hr although it wasn't on the flat - it was while descending from sea-level to -1756m in 10m of horizontal distance!!

in the real world - just over 54km/hr on the coast road from Bettystown to Mornington.

hf4z6sqo7vjngi · 24-09-2010 9:39am

Jawgap wrote: »

Just checked.........according to my Garmin, the fastest I've ever gone was 73456.8976 km/hr although it wasn't on the flat - it was while descending from sea-level to -1756m in 10m of horizontal distance!!

in the real world - just over 54km/hr on the coast road from Bettystown to Mornington.

Similiar, nice cycle/stretch of road along there.

cdaly_ · 24-09-2010 10:27am

Jawgap wrote: »

Just checked.........according to my Garmin, the fastest I've ever gone was 73456.8976 km/hr although it wasn't on the flat - it was while descending from sea-level to -1756m in 10m of horizontal distance!!.

Yep. Those old abandoned mineshafts are a bugger. Hope Lassie was able to bring help...

Chips Lovell · 24-09-2010 10:46am

Probably when things are being wound up at the end of a race. But I wouldn't be looking at my computer.

Suppless · 24-09-2010 11:25am

Kav0777 wrote: »

you should never cycle on a flat, you'll ruin your rims!!

:-D

Fastest i ever did on flat was ironically almost exactly the same as downhill. Approx 50mph
I was drafting something pretty large

But the wind blast when i could no longer keep with it was fairly strong.

Thats nothing though, check out this Fred,

Literally

http://www.fredrompelberg.com/en/html/algemeen/fredrompelberg/record.asp

Beasty · 24-09-2010 11:46am

Suppless wrote: »

Thats nothing though, check out this Fred, Literally
http://www.fredrompelberg.com/en/html/algemeen/fredrompelberg/record.asp

Yep, and check out six posts above yours, while you're at it;)

Harrybelafonte · 24-09-2010 11:48am

Something like 51km/h going along from the Burlington to Donnybrook, but I didn't keep it very long. I've tried to do it with out success every morning since.

jimbo32123 · 24-09-2010 1:01pm

88kmph on the flat on a newly tarred road in france, while making a break from a group! on my cycle comp the gradient was registered as -0.05% there was a slight tail wind but nothing worth!!