Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

General Cycling Discussion Have a cycling related question or comment that doesn't fit in one of the other specialty forums? Drop on in and post in here! When possible, please select the forum above that most fits your post!

User Tag List

Reply
 
Thread Tools Search this Thread
Old 07-09-05, 04:52 PM   #1
wombat
wombat eats roots & leave
Thread Starter
 
wombat's Avatar
 
Join Date: Mar 2005
Location: Brisbane Australia
Bikes: Diamondback MTB
Posts: 4
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
When are wind strengths dangerous?

I was going for a ride today, but winds are gusting up to 30 knots.
This makes for very unpleasant riding (especially headwinds) so I wimped.

But it raises the question...when is wind speed dangerous to ride in, or just plain stupid... I mean if you can onle progress at say walking speed, what's the point...?
wombat is offline   Reply With Quote
Old 07-09-05, 06:14 PM   #2
Eggplant Jeff
45 miles/week
 
Eggplant Jeff's Avatar
 
Join Date: Mar 2005
Location: Philadelphia, PA
Bikes: Jamis Aurora
Posts: 2,020
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
When you see a wicked witch get flattened by a house, it's time to seek shelter.
Eggplant Jeff is offline   Reply With Quote
Old 07-09-05, 06:28 PM   #3
Bikewer
Senior Member
 
Join Date: Mar 2005
Bikes:
Posts: 1,441
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I've found 30mph side winds will move me around a bit, but not dangerously. We normally only see winds in excess of that during storms.
Bikewer is offline   Reply With Quote
Old 07-09-05, 06:31 PM   #4
slvoid
2-Cyl, 1/2 HP @ 90 RPM
 
slvoid's Avatar
 
Join Date: Oct 2003
Location: NYC
Bikes: 04' Specialized Hardrock Sport, 03' Giant OCR2 (SOLD!), 04' Litespeed Firenze, 04' Giant OCR Touring, 07' Specialized Langster Comp
Posts: 15,762
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Depends.
Headwind: I'll give up when I can't go faster than walking pace in full drops and in the smallest ring and largest cog.
Tailwind: I'll give up when I'm airborne.
Crosswind: Around 45mph sustained and 30mph gusting. (It's easier to predictably lean into a cross wind than be thrown around by gusts).

The day I hit a 100mph tailwind is the day I combine cycling and having an orgasm into the same activity, as well as the day I have to hitch a ride back home. What would be nice is if a mini-hurricane can pass by with 100mph winds going in a circle. Then I can just ride in a circle and end up back home with the same tailwind.
slvoid is offline   Reply With Quote
Old 07-09-05, 07:11 PM   #5
superstar4410
Senior Member
 
superstar4410's Avatar
 
Join Date: Aug 2004
Location: USA
Bikes: Speed Demon
Posts: 167
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
depends on how the roads are set up in your area
superstar4410 is offline   Reply With Quote
Old 07-09-05, 07:15 PM   #6
michaelnel
Macaws Rock!
 
michaelnel's Avatar
 
Join Date: May 2005
Location: San Francisco, CA
Bikes: 2005 Soma Doublecross
Posts: 1,513
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
The tailwinds I hate are ones that are blowing the same speed you're going. Say you're pedalling your ass off going 25MPH, and you have a 25MPH tailwind. You sweat, but you have no relative air movement to blow it off and cool you down.

Sucks.
__________________
---

San Francisco, California
michaelnel is offline   Reply With Quote
Old 07-09-05, 09:32 PM   #7
geebee
Senior Member
 
geebee's Avatar
 
Join Date: Mar 2004
Location: Tasmania, Australia
Bikes: GT3 trike,Viper chopper, electric assist Viper chopper,Electric moped(Vespa style)
Posts: 540
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
If you are on a road bike ie. drop bars I have ridden with branches being blown out of trees and mtb'ers walking their bikes the side gusts can tend to pull the bike out from under you (having read this I may not be completely sane). On a mtb a lot lower wind speed, the same for choppers, recumbent trikes there is no maximum wind speed that I have found yet (and I live in the roaring forties!).
geebee is offline   Reply With Quote
Old 07-09-05, 09:33 PM   #8
dee-vee
vegan powered
 
Join Date: Jan 2005
Location: Chico, Ca
Bikes:
Posts: 385
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
When im on my commute I have to ride no matter what so I guess any wind speed I will have to suffer with.
dee-vee is offline   Reply With Quote
Old 07-09-05, 10:24 PM   #9
Bike nut
High Desert of California
 
Join Date: Jun 2005
Location: In a cycling unfriendly area
Bikes:
Posts: 125
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Where I live the winds blow constantly (yes it sucks) if I were to wait for a day when there is no wind I would ride about 2 days a year. After a while you get used to it. The only time the wind scares me is when I go over a freeway overpass and there is no fence. The wind blows at an angle as if it is going to blow me over the retaining wall and onto the freeway. Other than that I usually try to end my ride so I have a tail wind. Good luck, get out there and ride.
Bike nut is offline   Reply With Quote
Old 07-09-05, 10:51 PM   #10
Machka 
In Real Life
 
Join Date: Jan 2003
Bikes:
Posts: 46,679
Mentioned: 24 Post(s)
Tagged: 0 Thread(s)
Quoted: 566 Post(s)
Winds are dangerous when they reach tornado or hurricane status.

Take a look at the Fujita scale:
http://www.tornadoproject.com/fscale/fscale.htm

F0 -- Gale tornado -- 40-72 mph -- Some damage to chimneys; breaks branches off trees; pushes over shallow-rooted trees; damages sign boards.

Or the Beaufort Wind Scale:
http://www.zetnet.co.uk/sigs/weather...s/beaufort.htm

7 -- 32-38 -- Near Gale -- Whole trees in motion; inconvenience felt when walking against the wind.
8 -- 39-46 -- Gale -- Breaks twigs off trees; generally impedes progress.
9 -- 47-54 -- Severe Gale -- Slight structural damage occurs (chimney-pots and slates removed).


You can still ride up around 50 mph ... it's just a quite slow going.
Machka is offline   Reply With Quote
Old 07-09-05, 11:49 PM   #11
operator
cab horn
 
Join Date: Jun 2004
Location: Toronto
Bikes: 1987 Bianchi Campione
Posts: 28,306
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
It's dangerous when passing vehicles disturb the air enough to make you lose control of your bike.

Or when it's gusting that you can't hold a straight line.
operator is offline   Reply With Quote
Old 07-10-05, 12:11 AM   #12
womble
No longer in Wimbledon...
 
womble's Avatar
 
Join Date: May 2005
Location: Hong Kong
Bikes:
Posts: 867
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Constant wind isn't so dangerous so long as nothing big is blown around. I've tried riding into constant 60kph winds. I couldn't do it, but it wasn't dangerous, just frustrating.

I've tried riding a bike into 100+kph gusts. That was stupid alright- the first gust flipped the bike over and sent me tumbling down the road. My only defense is that I didn't realise how strong the wind was getting, and I took shelter after that.

This was in Patagonia, kind of a windy place.

Last edited by womble; 07-10-05 at 03:09 PM.
womble is offline   Reply With Quote
Old 07-10-05, 12:37 AM   #13
CdCf
Videre non videri
 
Join Date: Sep 2004
Location: Gothenburg, Sweden
Bikes: 1 road bike (simple, light), 1 TT bike (could be more aero, could be lighter), 1 all-weather commuter and winter bike, 1 Monark 828E ergometer indoor bike
Posts: 3,208
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I'm used to near-constant winds as well.
That's the price you pay for living right at the coast.
It's extremely rare to see wind speeds less than 3-4 m/s (6-8 kts), and on a typical day, it's more like 5-7 m/s (10-15 kts).
CdCf is offline   Reply With Quote
Old 07-10-05, 09:54 AM   #14
FarHorizon
Senior Curmudgeon
 
FarHorizon's Avatar
 
Join Date: Jan 2005
Location: Directly above the center of the earth
Bikes: Varies by day
Posts: 3,856
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Only when they move my 280 pounds of rider and bike combined to directions I don't want to go. IT HAS HAPPENED! A recent thunderstorm brought gusts sufficient to get me off the bike. I walk when it gets that bad.
FarHorizon is offline   Reply With Quote
Old 07-10-05, 06:49 PM   #15
cyclwestks
Senior Member
 
Join Date: Jul 2004
Bikes:
Posts: 270
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
30 MPH crosswind from the ditch side & you have a blowout. If your not paying enough attention you could end up out by the center line.

Happened to me once (don't tell the wife).
cyclwestks is offline   Reply With Quote
Old 07-10-05, 09:57 PM   #16
CRUM
Recovering Retro-grouch
 
CRUM's Avatar
 
Join Date: Dec 2003
Location: Some call it God's country. I call it Acton, Maine
Bikes: Too Many - 7 or 8
Posts: 5,008
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
When it knocks you over. Happened to me back in the 80's in a road race in central Maine. A particularily nasty steep climb dumped everyone onto a summit with no cover and many people were blown over as they topped that climb. Me included. Pretty embarrassing too as there was a sizable group of spectators at the top.
__________________
Keep it 'tween the ditches

My Blog - Lost in the Bo Zone
CRUM is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 03:35 PM.