Go Back   EcoModder Forum > EcoModding > Hypermiling / EcoDriver's Ed
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 10-25-2009, 02:46 PM   #11 (permalink)
Master EcoModder
 
Join Date: Nov 2008
Location: Madison AL
Posts: 1,123

The Geo - '93 Geo Metro
Team Metro
90 day: 45.16 mpg (US)
Thanks: 30
Thanked 40 Times in 37 Posts
Quote:
Originally Posted by dcb View Post
reminds me of cornstarch (or some other non-newtonian fluid), or a Tibetan monk maybe.
Reminds me of the opposite.

  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 10-25-2009, 03:27 PM   #12 (permalink)
dcb
needs more cowbell
 
dcb's Avatar
 
Join Date: Feb 2008
Location:
Posts: 5,038

pimp mobile - '81 suzuki gs 250 t
90 day: 96.29 mpg (US)

schnitzel - '01 Volkswagen Golf TDI
90 day: 53.56 mpg (US)
Thanks: 158
Thanked 267 Times in 210 Posts
if you hit the cornstarch quick, then it firms up. push slowly and it yields.
__________________
WINDMILLS DO NOT WORK THAT WAY!!!
  Reply With Quote
Old 10-25-2009, 04:21 PM   #13 (permalink)
Master EcoModder
 
Join Date: Nov 2008
Location: Madison AL
Posts: 1,123

The Geo - '93 Geo Metro
Team Metro
90 day: 45.16 mpg (US)
Thanks: 30
Thanked 40 Times in 37 Posts
Quote:
Originally Posted by dcb View Post
if you hit the cornstarch quick, then it firms up. push slowly and it yields.
Oh, I was thinking something along the lines of...

---v--- where the "v" is a recess full of cornstarch


you are saying
---^--- where the "^" is somehow held in shape and if you go across slow it lets you go through.
  Reply With Quote
Old 10-26-2009, 12:31 PM   #14 (permalink)
Master EcoModder
 
wagonman76's Avatar
 
Join Date: Jun 2008
Location: Northwest Lower Michigan
Posts: 1,006

Red Car - '89 Chevrolet Celebrity CL 4 door
Team Chevy
90 day: 36.47 mpg (US)

Winter Wagon - '89 Pontiac 6000 LE Wagon
90 day: 28.26 mpg (US)
Thanks: 8
Thanked 17 Times in 16 Posts
Let's see how well they function in the great frozen north. Or how long they even stay in place after a snowplow.

I wonder how it accurately measures the vehicle speed. A 2000 lb car should produce half the force at the same speed as a 4000 lb car. But in either case, you have to hit it regardless. So assuming the speed measurement works properly, if you've got a low slung car or spoilers or whatever, you're going to suffer damage even if you're going the speed limit.

I avoid places with speedbumps as well. There isn't a single speedbump or speedhump I know of that you can drive over at the legal posted speed without damaging your car. You have to come to a near complete stop and crawl over them.
__________________

Winter daily driver, parked most days right now


Summer daily driver
  Reply With Quote
Old 12-03-2009, 02:49 PM   #15 (permalink)
EcoModding Lurker
 
Join Date: Mar 2009
Location: Tamarindo, Costa Rica
Posts: 19

80 - '91 Toyota Land Cruiser
Thanks: 0
Thanked 1 Time in 1 Post
speed ditches work much better than speed bumps, for all vehicles.

try to ignore one and you thrash your front bumper and suspension

not only that, but they effectively shuttle water from one side of the road to the other.
  Reply With Quote
Old 12-03-2009, 03:02 PM   #16 (permalink)
EcoModding Apprentice
 
Bicycle Bob's Avatar
 
Join Date: May 2008
Location: N. Saskatchewan, CA
Posts: 1,675

Appliance White - '93 Geo Metro 4-Dr. Auto
Last 3: 42.35 mpg (US)

Stealth RV - '91 Chevy Sprint Base
Thanks: 84
Thanked 396 Times in 276 Posts
I'm all for uniformity on these things. On my 1st bike tour, I returned to a nice campground. Turning in to the driveway down to a river, I thought to myself - Ahh! First time in a week I'm on familar pavement! Then I discovered that they had added speed bumps, and not gotten them painted yet, in an area of dancing tree shadows.
  Reply With Quote
The Following User Says Thank You to Bicycle Bob For This Useful Post:
Christ (12-03-2009)
Old 12-03-2009, 03:03 PM   #17 (permalink)
Moderate your Moderation.
 
Join Date: Nov 2008
Location: Troy, Pa.
Posts: 8,919

Pasta - '96 Volkswagen Passat TDi
90 day: 45.22 mpg (US)
Thanks: 1,369
Thanked 430 Times in 353 Posts
It probably records speed some distance ahead with a laser speed detector. Relying on force to deduce speed is very unreliable. EDIT: Yup, it's very unreliable... and they're still going to use it that way. No laser detector.

Trailer park I used to live in, a bunch of the residents got upset over a speed bump being installed in the main driveway. They began going the wrong direction up the one-way road to avoid it. I did the same, because my vehicle would get stuck on the speed bump. It was like 10" tall, with no obvious regard to grade transition. My car had less than that for clearance, by far.
__________________
"ʞɐǝɹɟ ɐ ǝɹ,noʎ uǝɥʍ 'ʇı ʇ,usı 'ʎlǝuol s,ʇı"

  Reply With Quote
Old 12-03-2009, 04:21 PM   #18 (permalink)
Master EcoModder
 
Join Date: Feb 2009
Location: Phoenix
Posts: 595
Thanks: 106
Thanked 113 Times in 71 Posts
Speed bumps tear up heavy service vehicles such as fire trucks and ambulances that are covered in, or filled with their assorted equipment.

As far as I can tell they do nothing to improve safety. They just annoy people and cause congestion and speed shear.

I go the speed limit over them, personally. It always ticks me off when I see someone in a smooth-riding luxury SUV take speed bumps at 2mph.
__________________
2005 Escape 2.3 MT 2WD
2002 Mustang 3.8 AT
2015 Ram 1500 5.7L 4WD
2002 Motobecane 700DS
  Reply With Quote
Old 12-03-2009, 05:52 PM   #19 (permalink)
EcoModding Lurker
 
JonnyG's Avatar
 
Join Date: Nov 2009
Location: PA
Posts: 46

97RAV - '97 Toyota RAV4
90 day: 22.97 mpg (US)
Thanks: 0
Thanked 3 Times in 3 Posts
Have you guys ever seen speed tables? I've seen them in Massachusetts. They're just like speed bumps, except they're like 10 feet long. I can normally go over them at like 25 mph without even feeling them. I really like them because they keep people from speeding, but don't force them to jam on their brakes right before it.
__________________
  Reply With Quote
Old 12-06-2009, 09:19 PM   #20 (permalink)
EcoModding Apprentice
 
Join Date: May 2008
Location: Ohio
Posts: 107

Silver EP3 - '02 Honda Civic Si
Thanks: 0
Thanked 1 Time in 1 Post
Quote:
Originally Posted by RobertSmalls View Post
Or you could just blow through speed bumps fast enough that the suspension passes over the speed bump before the body has time to react. Try it some time.
My Civic Si doesn't have enough suspension. Iv done it in a car with enough, and it will help, with most cars...

  Reply With Quote
Reply  Post New Thread


Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Optimum piston speed? Frank Lee EcoModding Central 75 02-22-2016 04:50 PM
How to get instant fuel consumption from Megasquirt TELVM Instrumentation 11 08-29-2011 02:47 PM
Why Hypermiling With A Radar Detector Is Smart Jammer Instrumentation 25 10-07-2009 02:01 AM
I must be losing my mind. Some people need to grow up! Ptero Hypermiling / EcoDriver's Ed 117 06-14-2009 06:48 PM
Slow Speed Issues and an Auto Tranny Bobsterz Hypermiling / EcoDriver's Ed 4 06-28-2008 10:10 PM



Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com