HOT: Active* forum members generally gain 5% discount at starbike.com store!
Weight Weenies
* FAQ    * Search    * Trending Topics
* Login   * Register
HOME Listings Articles FAQ Contact About




Post new topic Reply to topic  [ 19 posts ] 
Go to page 1, 2  Next
Author Message
PostPosted: Mon Aug 05, 2013 10:35 am 
Offline
User avatar

Joined: Thu Aug 25, 2005 7:09 pm
Posts: 1227
Location: In the industry
Last night on my way to a neighborhood convenience store to grab some beers, my front rim got caught in one of those sewage lids and I flew over the handlebar. Not sure how I managed to land on my feet but my new carbon rim is cratched up pretty bad.

While pretty pissed off, I can't help thinking sewage lids in several countries I have visited seem to have this sort of really annoying design. Since WW is a very international forum, which countries have more cyclist-accommodating sewage lid designs?

Image

_________________
Fast falcons: http://www.youtube.com/watch?v=j3mTPEuFcWk" onclick="window.open(this.href);return false;
www.falcobike.com
Facebook: falcobikeglobal


Top
 Profile  
 
Posted: Mon Aug 05, 2013 10:35 am 


Top
  
 
PostPosted: Mon Aug 05, 2013 11:01 am 
Offline

Joined: Fri Jun 16, 2006 2:40 am
Posts: 188
Location: Wellington, New Zealand
In New Zealand probably 98% of them are like that. Some councils are progressively turning them 90 degrees as other work is done so they are less of a wheel trap. But they're incredibly rare.

The worst ones though have never been raised as layer after layer of new asphalt has been laid on the road surface next to them. So in a worst case scenario you have a six inch deep hole to fall down before your front wheel hits the grating.

Moral is don't ever ride in the gutter.

_________________
Nice bike... you ever take it off any sweet jumps?


Top
 Profile  
 
PostPosted: Mon Aug 05, 2013 11:10 am 
Offline

Joined: Fri Aug 10, 2012 11:54 am
Posts: 124
We have those in the UK but most tend to be at 90 degrees to the picture so wheels don't get caught, either that or they have a bar section in the middle to split the grill up so hopefully your wheel would get nudged out halfway rather than just get wedged in the full length of the grill like in the picture.


Top
 Profile  
 
PostPosted: Mon Aug 05, 2013 11:21 am 
Offline

Joined: Mon Mar 01, 2010 8:07 pm
Posts: 633
I have discussed this matter with some urban engineers.
The reason why these are set up like on the photo is to get small twigs from trees plus leaves and other urban dirt into the sewage system when it starts to rain.
So these lid openings are set up in the direction of the water flow. O/wise the dirt does stuck easily in the lid and following leaves and other stuff will block the lid from taking road water in.
Was also informed that biker friendly set up lids will cause stress for people with a baby carriage crossing urban roads who will stuck with their wheels within the traffic.
Now the last design it good for both worlds.
The newest lid openings are X shaped.

_________________
Kuota Kom Evo
viewtopic.php?f=10&t=111825&p=955235#p955235" onclick="window.open(this.href);return false;


Top
 Profile  
 
PostPosted: Mon Aug 05, 2013 1:05 pm 
Offline
User avatar

Joined: Sun May 04, 2008 10:03 pm
Posts: 768
Location: Back in the saddle...
I had the same thing happen a few years ago in California. I was on aluminum wheels, so luckily they only had to be rebuilt. Very dangerous.

Surprisingly, now I'm on the east coast and see less of them. Most of the ones here are rotated 90deg.

_________________
"Deserve's got nothing to do with it." William Munny


Top
 Profile  
 
PostPosted: Mon Aug 05, 2013 2:00 pm 
Offline

Joined: Sun Jul 22, 2012 7:17 pm
Posts: 326
In the UK they're at a 45 degree angle so as to avoid trapping wheels coming across them and still face in to the flow of water.

Image


Top
 Profile  
 
PostPosted: Mon Aug 05, 2013 2:26 pm 
Offline
User avatar

Joined: Sat Aug 29, 2009 4:30 pm
Posts: 1530
Around here (Utah, USA) the grates seem to be designed so that bike wheels won't fall in from any angle.

Last year, however, I had my front wheel slip into an expansion crack in a section of concrete road and went down very hard at high speed. Usually the expansion cracks are less than 1" wide and have some sort of asphalt packing stuffed into them. I have gone over them hundreds of times. So I wasn't being cautious enough and tried to ride over this one that was exceptionally wide and unpacked. It was just wide enough to allow my from wheel to slip down in and hold it.


Top
 Profile  
 
PostPosted: Mon Aug 05, 2013 2:51 pm 
Offline
User avatar

Joined: Mon Jan 23, 2006 6:35 am
Posts: 5020
Location: New York
The answer here would be not to ride in the gutter. The 3 ft. rule applies.

_________________
I never took drugs to improve my performance at any time. I will be willing to stick my finger into a polygraph test if anyone with big media pull wants to take issue. If you buy a signed poster now it will not be tarnished later. --Graeme Obree


Top
 Profile  
 
PostPosted: Mon Aug 05, 2013 2:56 pm 
Offline
Shop Owner

Joined: Sun Jan 03, 2010 4:58 am
Posts: 504
Seattle area in the USA seems to be positions at the 90 degree mark. As for riding on them, I try not to no matter how they are oriented.


Top
 Profile  
 
PostPosted: Mon Aug 05, 2013 5:28 pm 
Offline
User avatar

Joined: Wed Oct 20, 2010 5:56 am
Posts: 322
elviento, glad you're ok. Some in the US are at 45 degrees, but that didn't stop a horror story - a good friend bike shop owner left his shop at night, hopped off the curb and went straight into one of these 45 degree ones. Straight onto his face and almost died. Be careful out there.


Top
 Profile  
 
PostPosted: Tue Aug 06, 2013 9:34 am 
Offline
User avatar

Joined: Wed May 18, 2005 6:24 pm
Posts: 4391
Location: BELGIUM
These things can indeed be dangerous. I cracked a wheel on a similar one to elviento's in taiwan. It was under a bridge, the transition from bright to darkness made me miss it. Here in belgium where I live they are narrow and 90 degrees angled.

Image

_________________
Latest ride - Bianchi Infinito CV


Top
 Profile  
 
PostPosted: Tue Aug 06, 2013 11:58 pm 
Offline
User avatar

Joined: Wed Sep 26, 2007 1:57 pm
Posts: 7353
Location: San Francisco, CA
That 45-degree example looks frightening in the rain.

Most in the US are perpendicular. The parallel (dangerous) orientation is specifically excluded in design manuals. That said, there are still examples, and people still get launched over bars.

_________________
http://djconnel.blogspot.com/
Fuji SL/1
\


Top
 Profile  
 
PostPosted: Wed Aug 07, 2013 1:25 am 
Offline
Shop Wrench
User avatar

Joined: Sat Nov 29, 2008 6:15 am
Posts: 711
Most of the ones I ride past are grids, not slats. If I see a slatted one though, it's always parallel to the road.

_________________
"Any intelligent fool can make things bigger, more complex, and more violent. It takes a touch of genius -- and a lot of courage -- to move in the opposite direction."


Top
 Profile  
 
PostPosted: Wed Aug 07, 2013 5:02 am 
Offline
User avatar

Joined: Thu Aug 25, 2005 7:09 pm
Posts: 1227
Location: In the industry
It was too dark that night so I totally didn't see the thing as I normally stay away from them. Maybe it's karma for getting beer so late at night. LOL

Maybe another reason for going wide rim/tire.

_________________
Fast falcons: http://www.youtube.com/watch?v=j3mTPEuFcWk" onclick="window.open(this.href);return false;
www.falcobike.com
Facebook: falcobikeglobal


Top
 Profile  
 
PostPosted: Wed Aug 07, 2013 2:35 pm 
Offline

Joined: Sat Jul 29, 2006 2:36 am
Posts: 1184
Location: UK
Tugboat wrote:
The worst ones though have never been raised as layer after layer of new asphalt has been laid on the road surface next to them. So in a worst case scenario you have a six inch deep hole to fall down before your front wheel hits the grating.

Moral is don't ever ride in the gutter.

That's what they do in my area as well as it's too expensive to raise the drain. Fortunately the drain slats are now mostly at right angles to direction of travel.

Good advice re. riding in the gutter and if you have to be ready to bunny hop.


Top
 Profile  
 
Posted: Wed Aug 07, 2013 2:35 pm 


Top
  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 19 posts ] 
Go to page 1, 2  Next


Who is online

Users browsing this forum: maquisard and 14 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  

It is currently Thu Oct 23, 2014 6:58 pm

All times are UTC + 1 hour




Advertising   –  FAQ   –  Contact   –  Convert   –  About

© Weight Weenies 2000-2013
hosted by starbike.com


How to get rid of these ads? Just register!


Powered by phpBB