speed

sweetswing

What is the fastest speed you have done on the flat???
Not average but maximum!

Bluefoam

15km/h on a steep decline...

sweetswing

ahhh come on dont be shy guys, serious question.
i realise no boby wants to sound like they are boasting, so ill change my question to "ever heard of anyboby hit 80 or 90 kph"

Nietzschean

highest speed my gps recorded was north of 300km/hr, maximum instantaneous speeds from bike computers are useless a lot of the time...

Beasty

Just checked the Garmin history - there are a few blips, but the fastest genuine speed recorded is 111.8 kph (I was, however, in the back of an ambulance at the time:))

Fred hit 268.831 kph on the flat!

sweetswing

Beasty wrote: »

Just checked the Garmin history - there are a few blips, but the fastest genuine speed recorded is 111.8 kph (I was, however, in the back of an ambulance at the time:))

Fred hit 268.831 kph on the flat!

"jesus":eek:
not quiet what i was looking for,but an eye opener, thanks

158.1 km/hr, last weekend.

Yeah, something messed up.

thebouldwhacker

Ahh ye are all like little girls dancing around a cold swimming pool all afraid to jump in first.......:p I once went REALLY REALLY fast...... According to my HRM I once died:)

blorg

60?

fondriest

Think i hit close to 70 last year on the arklow bypass in the Eddie Tobin race with a hugh tailwind, could'nt spin fast enough and blew a gasket

Lumen

blorg wrote: »

60?

I can verify this as I think I was drafting at the time. In a car.

gman2k

Fastest I ever done on the flat was 45mph, way back in the day on the Tallaght bypass. (and I wasn't drafting)
Fastest ever downhill was only a miserable 5mph on top of that - 50mph, down a road off Slade near Saggart.
Of course these sound so much faster when in the modern Km/h
45mph = 72km/h
50mph = 80km/h

chakattack

gman2k wrote: »

Fastest I ever done on the flat was 45mph, way back in the day on the Tallaght bypass. (and I wasn't drafting)
Fastest ever downhill was only a miserable 5mph on top of that - 50mph, down a road off Slade near Saggart.
Of course these sound so much faster when in the modern Km/h
45mph = 72km/h
50mph = 80km/h

Aero bars/bike? Tailwind?

Impressive stuff in any case

barochoc

I got hauled 15 years ago on the Navan/Blanch bypass, heading towards the Halfway house doing 76Mph behind a Transit Van!!!

Gardai went bananas at me 'cause it was starting to rain & getting dark.

I was amazed the guy in the van never got pulled. I was spun out & getting pulled along by the draft.

About 10 years ago I hit 50mph on the Naas road on my recumbent. I had a nice tail wind & just let rip. I reckon I would have got more if it was a better machine, may be a racing one like a WindCheeta.

Nothing beats the thrill of drafting a van/truck or descending down Sally Gap! Often passed 70Mph on the bike there!

DirkVoodoo

barochoc wrote: »

I got hauled 15 years ago on the Navan/Blanch bypass, heading towards the Halfway house doing 76Mph behind a Transit Van!!!

:eek:

Surely that was not a flat road? 121 km/hr on a bike drafting sounds too fast too be true, it wasn't a motorbike was it?

barochoc

DirkVoodoo wrote: »

:eek:

Surely that was not a flat road? 121 km/hr on a bike drafting sounds too fast too be true, it wasn't a motorbike was it?

What's hard to believe about it? It's very very easy to do. If you are anyway fit & a decent competitive cyclist you should have no problem sprinting behind a vehicle up to a speed of 45-50mph. The rest is easy, you run out of gear & just get pulled along, especially if you're behind an articulated truck!!

I got pulled many a time over the years for this. I've had warnings from Gardaí, cheers from onlookers & passing cars. Some people would sit in the outside lane or behind & watch in disbelief.

My father used to go crazy at the time as he was sure I'd have an accident. I had a front tyre blow out once at 50+Mph & nearly $h!t myself. I just held the bars straight & used the back break & brought myself to a halt. Had no spare so ended up cycling home on it & ruining the front rim!

garminguy

35 m.p.h is my best effort

jdt101

....I was going to fast too even see my computer....

dario28

barochoc wrote: »

W Some people would sit in the outside lane or behind & watch in disbelief.

Superbiker

DirkVoodoo

barochoc wrote: »

What's hard to believe about it?

Well, apparently you would be spinning at 198 rpm. If you can maintain that comfortably on the flat for an extended length of time then well done. There is also the issue of braking from that speed while drafting a vehicle.

Didn't Cancellara get up to a similar speed last year? It was downhill I think.

Also, I'm not very good at the cozybeehive thing but even putting it at 120 kph pedalling downhill requires a few thousand watts. I just find it hard to believe that without the aid of gravity, you can get up to that speed.

sunshinyday

DirkVoodoo wrote: »

:eek:

Surely that was not a flat road? 121 km/hr on a bike drafting sounds too fast too be true, it wasn't a motorbike was it?

i know hes a pro but check out theo Bos here at 140kmph
http://www.youtube.com/watch?v=H-Pl-H3UJJg

i got a ticket myself in the states for 60mph on a decent. there was hairpins at the bottom so the whole decent had a 25mph limit.

€100 + the speed. Learnt my lesson state side.

seamus

barochoc wrote: »

What's hard to believe about it? It's very very easy to do. If you are anyway fit & a decent competitive cyclist you should have no problem sprinting behind a vehicle up to a speed of 45-50mph. The rest is easy, you run out of gear & just get pulled along, especially if you're behind an articulated truck!!

I'm calling shenanigans on that. Vehicles don't "pull" you along, they simply reduce wind resistance to effectively zero so that all you're fighting against is friction. On a flat road, you will still experience some resistance, so your speed will (very gradually) drop when you stop pedalling.

80km/h I can believe with large gearing, but there is no way in hell that drafting an artic on the flat without pedalling will add an extra 40km/h to your speed unless there's a 120km/h tailwind.

Nothing beats the thrill of drafting a van/truck or descending down Sally Gap! Often passed 70Mph on the bike there!

A van or a truck doing 70mph down sallygap? Think about that for a second.

Sorry to burst your bubble, but there's clearly been something wrong with your speedometer for years.

ednwireland

about 130kmh

my light was interfering with my computer though but i'll not let that stop it counting

Jawgap

About 60 km/h plus some change - on the flat following a descent - does that count?

Although according to my Garmin I once maintained a steady 32km/h while completing a 127.86m descent and similar ascent in the space of about 10m - not bad for 1270% gradient

blorg

I think I managed 65,000km/h once on my Garmin. It gave up the ghost soon afterwards.

mcgratheoin

seamus wrote: »

A van or a truck doing 70mph down sallygap? Think about that for a second.

Agree with you on most of the point, but I think you missed the or in between drafting and descending - read it again.

My fastest on the flat is probably around 50k mark, hit 80+ on a descent once but that was according to guy I was following - my cheap speedo stops registering speeds over 66k i.e every nice steep descent - really need to get one with a better magnet/sensor thingy.

seamus

mcgratheoin wrote: »

Agree with you on most of the point, but I think you missed the or in between drafting and descending - read it again.

You're right, my apologies barochoc.

Haven't really had the chance for any insane speeds on the road bike in the 6 months I've had it. Managed to hit around 50km/h on the flat a couple of times, my gears top out at 55km/h, so happy enough with that.

Hit 75-76km/h downhill coming down Bohernabreena, but I was scrubbing speed a bit, haven't enough experience of downhill on the road bike, so I'm still a bit nervy over 60km/h. I topped out at that speed, but was really only solidly moving at around 68km/h.

blorg

I would have to agree with the others about being skeptical of 121km/h on the flat drafting.

Pigeon Reaper

I hit 59km on the coast road once. It was a major pain that I couldn't get the extra little bit not matter how hard I tried.

Harrybelafonte

blorg wrote: »

I would have to agree with the others about being skeptical of 121km/h on the flat drafting.

De Steeg is the stig video - 134km:

http://www.sporza.be/cm/sporza/videozone/MG_sportnieuws/MG_wielrennen/1.619199

Sorry, Belgian, can't translate

sy

barochoc wrote: »

I got hauled 15 years ago on the Navan/Blanch bypass, heading towards the Halfway house doing 76Mph behind a Transit Van!!!

Didn't think a transit could do 76 Mph
Sorry but no believe this figure or maybe you need to recalibrate your speedometer.
Unless of course you are Theo Boss;)

70 Mph ( 112.5 Kmh) down Sally Gap ? Didn't think there was a long enough straight to reach this speed. A certain Mr Kelly was asked what his fasted descent was(can't remember what Alpine mountain) but 70 Mph and that was drafting Phil Anderson!

Alkers

seamus wrote: »

I'm calling shenanigans on that. Vehicles don't "pull" you along, they simply reduce wind resistance to effectively zero so that all you're fighting against is friction. On a flat road, you will still experience some resistance, so your speed will (very gradually) drop when you stop pedalling.

80km/h I can believe with large gearing, but there is no way in hell that drafting an artic on the flat without pedalling will add an extra 40km/h to your speed unless there's a 120km/h tailwind.

A van or a truck doing 70mph down sallygap? Think about that for a second.

Sorry to burst your bubble, but there's clearly been something wrong with your speedometer for years.

With something as big as a van it does actually pull you along, the shape of the van creates a partial vacuum just behind it.
I remember watching a clip of a guy on a full DH bike pulling wheelies at 80mph. He had a sheet of rubber on the bumper of the van as while he was cycling, he was so close to the van that he kept touching off it.
How you'd manage this on a public road with an unaware van/truck driver is beyond me though.

Beasty

As I pointed out above, 268.831 kph has been achieved (not on Irish roads though:D)

2 Wheels Good

Managed high 30s on the flat, 49mph down the dodgy old road down to Bull McCabes in Cork from the airport one night, still can't figure that one, strange loss of friction me thinks...
Got a nice average of 26mph over 13 miles down Mont Ventoux on a rental, could have managed a lot more if i'd the confidence of being on my own bike

blorg

Harrybelafonte wrote: »

De Steeg is the stig video - 134km:

http://www.sporza.be/cm/sporza/videozone/MG_sportnieuws/MG_wielrennen/1.619199

Sorry, Belgian, can't translate

The fact that two pro cyclists topped out at 114 and 121 km/h for a few seconds would tend to support my skepticism that barochoc managed it.

@Beasty- that bike had special gearing. Part of the skepticism is the RPM barochoc would have had to sustain at that speed.

Beasty

blorg wrote: »

@Beasty- that bike had special gearing. Part of the skepticism is the RPM barochoc would have had to sustain at that speed.

I am equally sceptical about barochoc's statements - just pointing out what can be (and indeed has been) achieved:)

Signal_ rabbit

16G's