Sweet spot crusing speed - Page 2 - Fuelly Forums

Android Users - Coming Soon! - Migrating from aCar 4.8 to 5.0

Reply
 
Thread Tools Display Modes
 
Old 01-14-2015, 11:41 AM   #11
Registered Member
 
Join Date: Aug 2009
Posts: 2,486
Country: United Kingdom
Location: Mid Wales
Well I got almost 400 miles to do this weekend, but only about 20% is highway. Still, I'll have a go with cruising speeds and see what happens. Unfortunately, there are a few inches of snow here and there, so I might have to slow it down a bit!
__________________

__________________

Please subscribe to my YouTube channel
Draigflag is offline   Reply With Quote
Old 01-14-2015, 01:04 PM   #12
Registered Member
 
Join Date: Nov 2010
Posts: 17
Country: Canada
Location: Ottawa, ON
My sweet spot is usually around 112 km/h. It's not as great for the fuel consumption, but it's just in that range that enough others pass me to grab all the tickets
__________________

__________________
LouSiffer is offline   Reply With Quote
Old 02-27-2015, 09:18 AM   #13
Registered Member
 
Join Date: Aug 2009
Posts: 2,486
Country: United Kingdom
Location: Mid Wales
I have another question as regards to tail winds and head winds. If there is a strong tail wind, should I decrease my cruising speed and let the wind help push the car, or increase it? If theres a strong headwind, should I increase or decrease or will neither make a difference?
__________________

Please subscribe to my YouTube channel
Draigflag is offline   Reply With Quote
Old 02-27-2015, 09:27 AM   #14
Registered Member
 
Join Date: Aug 2014
Posts: 159
Country: United States
Location: East Teggsas
A tailwind lets you cruise a bit faster if you so choose at the same fuel economy. I do things a bit differently - I simply pick one steady throttle setting and this, with a tailwind, lets me run a bit faster with better economy. The opposite is true of headwinds.
Jcp385 is offline   Reply With Quote
Old 02-27-2015, 10:05 AM   #15
Registered Member
 
Join Date: Nov 2007
Posts: 1,460
Country: United States
Location: north east PA
Since a headwind would add to the effective speed of the air moving over the car, it will increase the effective drag. So slowing down can reduce the losses from the headwind.
trollbait is offline   Reply With Quote
Old 02-27-2015, 03:09 PM   #16
Registered Member
 
Join Date: Aug 2009
Posts: 2,486
Country: United Kingdom
Location: Mid Wales
Thanks for the answers
__________________

Please subscribe to my YouTube channel
Draigflag is offline   Reply With Quote
Old 02-27-2015, 04:04 PM   #17
Registered Member
 
JanGeo's Avatar
 
Join Date: Jan 2006
Posts: 2,442
Country: United States
Send a message via Yahoo to JanGeo
Although by going slower it makes it longer that you travel into the wind and the more it has time to exert force against you however since drag increases with the square of the velocity it is best to not go too fast... Tail winds work great when you drive a brick like my 2006 xB but going faster with a tail wind increases pumping losses due to light load so it sort of cancels the tail wind a bit if you go too fast. It is fun going 70-80 mph and get 50+ mpg though!
JanGeo is offline   Reply With Quote
Old 02-28-2015, 09:28 AM   #18
Registered Member
 
Join Date: Aug 2009
Posts: 2,486
Country: United Kingdom
Location: Mid Wales
Yea that would probably be 80 or 90 MPG in mine! Its a shame I dont get to use highways more often, I think ive only used them twice in the last year...
__________________

Please subscribe to my YouTube channel
Draigflag is offline   Reply With Quote
Old 02-28-2015, 09:45 AM   #19
Site Team / Moderator
 
Jay2TheRescue's Avatar
 
Join Date: Sep 2008
Location: Northern Virginia
Posts: 4,657
Country: United States
Location: Northern Virginia
Arrow

My Escape Hybrid does best in the 50 MPH - 60 MPH range. Mileage really drops off quickly over 65 MPH.
__________________






Jay2TheRescue is offline   Reply With Quote
Old 02-28-2015, 01:11 PM   #20
Registered Member
 
Join Date: Jan 2015
Posts: 9
Country: Belgium
Location: Brussel
In my Toyota Auris TS HSD the best mileage is done at 107Km/h

The best I could get till now was 4.1L/100Km
__________________

lowgitek is offline   Reply With Quote
Reply

Thread Tools
Display Modes

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Powered by vBadvanced CMPS v3.2.3


All times are GMT -8. The time now is 05:23 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.