FacebookTwitter
Hatrack River Forum Post New Topic  Post A Reply
my profile login | register | search | faq | forum home

  next oldest topic   next newest topic
» Hatrack River Forum » Active Forums » Books, Films, Food and Culture » Are wide, shallow potholes worse to hit at speed than narrow, deep potholes?

   
Author Topic: Are wide, shallow potholes worse to hit at speed than narrow, deep potholes?
Dagonee
Member
Member # 5818

 - posted      Profile for Dagonee           Edit/Delete Post   Reply With Quote 
Discuss.
Posts: 26071 | Registered: Oct 2003  |  IP: Logged | Report this post to a Moderator
katharina
Member
Member # 827

 - posted      Profile for katharina   Email katharina         Edit/Delete Post   Reply With Quote 
Dagonee, sometimes you are just wonderful.

As for the question, I have no idea. Either I don't notice potholes, or I have lived in places that kept up with them, because i can't remember the last time I drove through a pothole.

Posts: 26076 | Registered: Mar 2000  |  IP: Logged | Report this post to a Moderator
ClaudiaTherese
Member
Member # 923

 - posted      Profile for ClaudiaTherese           Edit/Delete Post   Reply With Quote 
Existence and constitution of any liquid enclosed is a critical factor, IMHO.

I prefer wide to narrow, but deep to shallow. If I'm going to hit a pothole at speed, I feel I should get my money's worth.

Posts: 14017 | Registered: May 2000  |  IP: Logged | Report this post to a Moderator
Stephan
Member
Member # 7549

 - posted      Profile for Stephan   Email Stephan         Edit/Delete Post   Reply With Quote 
High speed? I would assume anything shallow would be better. Though I guess it depends on how narrow. If it is narrower then the wheel I would much rather hit that one even if it is deep. I'm guessing my wheel would just go right over it.
Posts: 3134 | Registered: Mar 2005  |  IP: Logged | Report this post to a Moderator
ketchupqueen
Member
Member # 6877

 - posted      Profile for ketchupqueen   Email ketchupqueen         Edit/Delete Post   Reply With Quote 
I prefer just to not drive where there are potholes, especially at speed.
Posts: 21181 | Registered: Sep 2004  |  IP: Logged | Report this post to a Moderator
Dagonee
Member
Member # 5818

 - posted      Profile for Dagonee           Edit/Delete Post   Reply With Quote 
quote:
As for the question, I have no idea. Either I don't notice potholes, or I have lived in places that kept up with them, because i can't remember the last time I drove through a pothole.
Does that mean you haven't driven into the District since you moved here?

quote:
I prefer wide to narrow, but deep to shallow. If I'm going to hit a pothole at speed, I feel I should get my money's worth.
Your mechanic must love you. [Big Grin]
Posts: 26071 | Registered: Oct 2003  |  IP: Logged | Report this post to a Moderator
Primal Curve
Member
Member # 3587

 - posted      Profile for Primal Curve           Edit/Delete Post   Reply With Quote 
What if the narrow pothole disguised a sphere of annihilation?
Posts: 4753 | Registered: May 2002  |  IP: Logged | Report this post to a Moderator
katharina
Member
Member # 827

 - posted      Profile for katharina   Email katharina         Edit/Delete Post   Reply With Quote 
Hmm...I HAVE driven into the district several times, including out to the Arboretum.

Okay, maybe I have pothole blinders.

Posts: 26076 | Registered: Mar 2000  |  IP: Logged | Report this post to a Moderator
ClaudiaTherese
Member
Member # 923

 - posted      Profile for ClaudiaTherese           Edit/Delete Post   Reply With Quote 
[To Dagonee] You betcha. [Big Grin]
Posts: 14017 | Registered: May 2000  |  IP: Logged | Report this post to a Moderator
Primal Curve
Member
Member # 3587

 - posted      Profile for Primal Curve           Edit/Delete Post   Reply With Quote 
Wide, deep pothole.
Posts: 4753 | Registered: May 2002  |  IP: Logged | Report this post to a Moderator
twinky
Member
Member # 693

 - posted      Profile for twinky   Email twinky         Edit/Delete Post   Reply With Quote 
One would think narrow, deep potholes would be harder on your car's shocks.
Posts: 10886 | Registered: Feb 2000  |  IP: Logged | Report this post to a Moderator
Dan_raven
Member
Member # 3383

 - posted      Profile for Dan_raven   Email Dan_raven         Edit/Delete Post   Reply With Quote 
I think the bigger question is, fast or slow?

Do you go through the pot-hole slowly, feeling each and every jarring bump and stress, or do you go fast, jumping over most of the whole in what my mechanic calls "The Duke Boys way of avoiding pot-holes"

Yeah, both my mechanic and the guy who sells me tires really push "Them Duke Boys" method.

Posts: 11895 | Registered: Apr 2002  |  IP: Logged | Report this post to a Moderator
Tante Shvester
Member
Member # 8202

 - posted      Profile for Tante Shvester   Email Tante Shvester         Edit/Delete Post   Reply With Quote 
If the hole is narrow enough that the entirety of the tire is able to roll over it without getting inside, then narrow is much better.

If it is wide enough that your tire is hitting the bottom of the hole instead of just rolling over the top, then shallow is better, because your undercarriage doesn't get scraped.

Worst is after a rain, when the potholes are disguised as innocuous puddles. I've blown out a tire riding through a "puddle" that was really a wicked big deep hole.

Posts: 10397 | Registered: Jun 2005  |  IP: Logged | Report this post to a Moderator
Shanna
Member
Member # 7900

 - posted      Profile for Shanna   Email Shanna         Edit/Delete Post   Reply With Quote 
I prefer driving over wide/shallow over narrow/deep. I'm always so scared I'm going to get stuck in the deep ones. But my experience is limited since I spent 14 years on the smooth roads of Texas and only three years so far in Louisiana where there are often more holes than road.

Wasn't there a Mythbusters episode about bumpy roads and speed?

Posts: 1733 | Registered: Apr 2005  |  IP: Logged | Report this post to a Moderator
Lisa
Member
Member # 8384

 - posted      Profile for Lisa   Email Lisa         Edit/Delete Post   Reply With Quote 
quote:
Originally posted by Primal Curve:
Wide, deep pothole.

Thelma and Louise.
Posts: 12266 | Registered: Jul 2005  |  IP: Logged | Report this post to a Moderator
TheGrimace
Member
Member # 9178

 - posted      Profile for TheGrimace   Email TheGrimace         Edit/Delete Post   Reply With Quote 
see, the somewhat wide and deep potholes with jagged edges are why the hummer's capability to deflate and inflate the tires while driving is so critical... now I understand why so many people in SoCal have them...
Posts: 1038 | Registered: Feb 2006  |  IP: Logged | Report this post to a Moderator
The Rabbit
Member
Member # 671

 - posted      Profile for The Rabbit   Email The Rabbit         Edit/Delete Post   Reply With Quote 
If a pothole is substantially narrower (in the direction of travel) than the radius of the tire, then the distance you will drop into the hole will be limited by the radius of curvature of the tire rather than the depth of the pothole. Once the hole gets wide enough, the tire will hit the bottom of the hole which will change the dynamics0.

So for example: consider hitting a pot hole that is 12 inches long and 12 inches deep with a 24 inch diameter tire. When you hit the leading of the pot hole your wheel will begin to drop into the hole. After you have dropped 1.6 inches, your tire will hit the trailing edge of the hole and you won't sink any further. In this case, there will be little load placed on the shocks but the tire may take a significant impact.

On the other hand, consider hitting a hole that is 20 inches long and 4 inches deep with the same 24 inch diamter tire. Once again when you hit the leading edge of the hole, your car is going to start dropping but in this case, the tire will hit the bottom of the hole before it hits the trailing edge of the hole so you will drop the full 4 inches into the hole. This will put more of a load onto the the shocks as well as the passengers of the car but possibly be easier on the tire.

All this of course assumes that the speed of the car is low enough that you don't "fly" over the hole which is a pretty good assumption for any rational driver on a pothole filled road.

Now consider for moment the width of the hole perpedicular to the direction of travel. The narrower the hole is, the easier it will be for the driver to steer around the hole and miss it all together. I vastly prefer a deep hole that I can easily avoid over a shallow one that I have to go through.

Posts: 12591 | Registered: Jan 2000  |  IP: Logged | Report this post to a Moderator
Dagonee
Member
Member # 5818

 - posted      Profile for Dagonee           Edit/Delete Post   Reply With Quote 
I knew when I posted this someone would do the math. [Big Grin]

I love Hatrack.

I would guess that the first situation is more likely to lead to a blow out, the second more likely to lead bottoming out and damaging the undercarriage.

I knew someone who went into a narrow pothole that basically clamped the side of his tires when it narrowed at the end. Instant and total blow out.

Posts: 26071 | Registered: Oct 2003  |  IP: Logged | Report this post to a Moderator
Orincoro
Member
Member # 8854

 - posted      Profile for Orincoro   Email Orincoro         Edit/Delete Post   Reply With Quote 
quote:
Originally posted by twinky:
One would think narrow, deep potholes would be harder on your car's shocks.

You have to continually keep your vehicle guessing. Drive fast, take chances, use the reverse gear as a break... change things up a bit! Personally I drive a ranger 4x4, so I take pride in going over speed bumps and potholes, as well as parking curbs, all at speed. Is it good? Well whatever doesn't kill your car makes it stronger right? RIGHT?
Posts: 9912 | Registered: Nov 2005  |  IP: Logged | Report this post to a Moderator
Tante Shvester
Member
Member # 8202

 - posted      Profile for Tante Shvester   Email Tante Shvester         Edit/Delete Post   Reply With Quote 
Orincoro, that was YOU? Next time, wave back when I give you the middle finger salute!
Posts: 10397 | Registered: Jun 2005  |  IP: Logged | Report this post to a Moderator
Kwea
Member
Member # 2199

 - posted      Profile for Kwea   Email Kwea         Edit/Delete Post   Reply With Quote 
LOL....Dag, Mythbusters just did a show on this one.
Posts: 15081 | Registered: Jul 2001  |  IP: Logged | Report this post to a Moderator
Dagonee
Member
Member # 5818

 - posted      Profile for Dagonee           Edit/Delete Post   Reply With Quote 
What'd they say?
Posts: 26071 | Registered: Oct 2003  |  IP: Logged | Report this post to a Moderator
The Rabbit
Member
Member # 671

 - posted      Profile for The Rabbit   Email The Rabbit         Edit/Delete Post   Reply With Quote 
Using google, I found a Mythbusters episode that investigated whether hitting a pothole with the drive shaft can cause the car to pole vault end over end. They failed. I could not find any other episodes involving potholes.
Posts: 12591 | Registered: Jan 2000  |  IP: Logged | Report this post to a Moderator
Orincoro
Member
Member # 8854

 - posted      Profile for Orincoro   Email Orincoro         Edit/Delete Post   Reply With Quote 
The episode of mythbusters actually tested the myth that it was a smoother ride if you drove faster on a corrugated road like the ones sometimes found in Australian outback. The answer is two-fold.

First the actual impact is more severe at speed, but they found that the PERCEIVED impact is lessened over a fairly regular but choppy road. Basically you don't notice the choppiness if it is faster, even when it does more damage. I believe they also found a sweet spot on a regular corrugated road that will actually allow you to "skip" from one peak to the next with less impact time.

SOOO, if you were driving over some VERY thin potholes that were deep, it might be like a corrugated road with a sweet spot, but then you might do some serious damage. I would personally prefer flat wide potholes because that's what my car is built for, but that's not everybody.

Posts: 9912 | Registered: Nov 2005  |  IP: Logged | Report this post to a Moderator
quidscribis
Member
Member # 5124

 - posted      Profile for quidscribis   Email quidscribis         Edit/Delete Post   Reply With Quote 
I hate potholes. Potholes are evil. [Mad]
Posts: 8355 | Registered: Apr 2003  |  IP: Logged | Report this post to a Moderator
Kwea
Member
Member # 2199

 - posted      Profile for Kwea   Email Kwea         Edit/Delete Post   Reply With Quote 
They JUST did one, about driving on a road that has a "washboard" style of potholes, and the results were a bit inconclusive.

They measured the ride in three ways. First, they put a tower of champagne glasses in the passenger seat filled with water and measured how much water was lost. Second, they measured data from the shocks. Third, they measured the subjective feel of it from the drivers perspective.


They also had a slow motion camera record visual data.

At high speeds it seemed to be smoother, although you had less control overall. It depended on how fast, and what type of road conditions over all....but they agreed that it seemed smoother, and at higher speeds that data supported the claims.


However, at mediums speeds the ride was MORE bumpy, as measured by the water loss and slow motion compareson the shocks.


The initial conflicting data was so inconclusive that they moved from using a dirt road to making a test track with a specific man-made "washboard" condition.

Posts: 15081 | Registered: Jul 2001  |  IP: Logged | Report this post to a Moderator
Orincoro
Member
Member # 8854

 - posted      Profile for Orincoro   Email Orincoro         Edit/Delete Post   Reply With Quote 
1. I drive

2. I have in my mind the notion of a Perfect Road

3. I, as an American, would never pay the taxes necessary to maintain a perfect road

4. Only a European could possibly decide to pay the taxes necessary to build the perfect road

5. A perfect road would not be perfect if it were not mantained

6. Someone in Europe maintains the perfect road. We're looking very hard at Germany. They had Nietzsche as well, and they're due.

Posts: 9912 | Registered: Nov 2005  |  IP: Logged | Report this post to a Moderator
Elizabeth
Member
Member # 5218

 - posted      Profile for Elizabeth   Email Elizabeth         Edit/Delete Post   Reply With Quote 
The worst potholes are the ones which are round,jagged-edged, and deep, so the tire sort of drops in, jars you out of your senses, and leaves you with the certainty that death is imminent for your poor car.

Dag, what about frost heaves? They can be worse, you know.

Posts: 10890 | Registered: May 2003  |  IP: Logged | Report this post to a Moderator
Seatarsprayan
Member
Member # 7634

 - posted      Profile for Seatarsprayan   Email Seatarsprayan         Edit/Delete Post   Reply With Quote 
I live on the border between two cities... my side of the street is residential, but across the street, in another city, it's industrial. Result: constant stream of semis barrelling down the street. Result: potholes galore.

Me, I've got a Jeep, so I don't slow down. The really big deep ones I try to dodge, but otherwise I just go over them.

I prefer shallow potholes.

Posts: 454 | Registered: Mar 2005  |  IP: Logged | Report this post to a Moderator
Dagonee
Member
Member # 5818

 - posted      Profile for Dagonee           Edit/Delete Post   Reply With Quote 
quote:
Dag, what about frost heaves? They can be worse, you know.
Those so uncivilized as to live in a place where water does not remain in it's proper liquid form deserve to have bad shocks.
Posts: 26071 | Registered: Oct 2003  |  IP: Logged | Report this post to a Moderator
Elizabeth
Member
Member # 5218

 - posted      Profile for Elizabeth   Email Elizabeth         Edit/Delete Post   Reply With Quote 
Well, Dag, if this warming of the globe which is not global warming continues, I will never experience a frost heave again.
Posts: 10890 | Registered: May 2003  |  IP: Logged | Report this post to a Moderator
BlackBlade
Member
Member # 8376

 - posted      Profile for BlackBlade   Email BlackBlade         Edit/Delete Post   Reply With Quote 
If a hole reaches a certain depth and circumference does it behoove us to stop calling it a POThole? If it's shaped more like a wok can we call it a wokhole? (Sounds better to me) how about a basinhole? Cauldronhole? How deep must it be before it stops being a pothole and it becomes simply a shaft?
Posts: 14316 | Registered: Jul 2005  |  IP: Logged | Report this post to a Moderator
   

Quick Reply
Message:

HTML is not enabled.
UBB Code™ is enabled.
UBB Code™ Images not permitted.
Instant Graemlins
   


Post New Topic  Post A Reply Close Topic   Feature Topic   Move Topic   Delete Topic next oldest topic   next newest topic
 - Printer-friendly view of this topic
Hop To:


Contact Us | Hatrack River Home Page

Copyright © 2008 Hatrack River Enterprises Inc. All rights reserved.
Reproduction in whole or in part without permission is prohibited.


Powered by Infopop Corporation
UBB.classic™ 6.7.2