Go Back   EcoModder Forum > EcoModding > General Efficiency Discussion
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 02-15-2009, 12:22 PM   #31 (permalink)
Master EcoModder
 
Join Date: Jun 2008
Location: Earth
Posts: 5,209
Thanks: 225
Thanked 811 Times in 594 Posts
Quote:
Originally Posted by TestDrive View Post
...it would usually take anywhere from 50 - 100 miles for transmission temperature to stabilize at a peak reading.
Sure - but I bet those transmissions weighed about as much as the whole Insight does :-) And were mostly iron & steel. Aluminium has 4-5 times the thermal conductivity.


Last edited by jamesqf; 02-15-2009 at 12:28 PM..
  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 02-15-2009, 12:42 PM   #32 (permalink)
Master EcoModder
 
basjoos's Avatar
 
Join Date: Dec 2007
Location: Upstate SC
Posts: 1,088

Aerocivic - '92 Honda Civic CX
Last 3: 70.54 mpg (US)

AerocivicLB - '92 Honda Civic CX
Team Honda
90 day: 55.14 mpg (US)

Camryglide - '20 Toyota Camry hybrid LE
90 day: 65.66 mpg (US)
Thanks: 16
Thanked 672 Times in 300 Posts
Quote:
Originally Posted by TestDrive View Post
Wow! That's way more than I'd have guessed. How do/did you determine?
By driving the same scheduled route with or without my lights on under the same temps and wind situation, something that happens regularly when the day length is rapidly changing near the equinoxes. When you are running at the minimal energy budget needed to achieve 70mpg, the power hit needed to run the lights takes a bigger chunk out of that energy budget than it does when you running at an energy splurging 20mpg. On my F150 I can hardly notice a difference between lights on and lights off.
__________________
aerocivic.com
  Reply With Quote
Old 02-15-2009, 01:40 PM   #33 (permalink)
Master EcoModder
 
Join Date: Aug 2008
Location: South Dakota
Posts: 460

WonderWagon - '94 Ford Escort LX
Last 3: 51.52 mpg (US)

DaBluOne - '99 Ford Escort SE
90 day: 48.97 mpg (US)

DaRedOne - '99 Ford Escort ZX2 Hot
Thanks: 0
Thanked 15 Times in 4 Posts
Quote:
Originally Posted by basjoos View Post
When you are running at the minimal energy budget needed to achieve 70mpg, the power hit needed to run the lights takes a bigger chunk out of that energy budget than it does when you running at an energy splurging 20mpg.
Yet another reason to think of FE in terms of fuel unit / distance instead of distance / fuel unit (mpg).
An additional 0.42 - 0.64 gallons consumed per 1000 miles due to lights on.
  Reply With Quote
Old 02-16-2009, 01:06 PM   #34 (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
When you're getting the kind of high FE that Bassjoos does, little things like lights do make a bigger cut in FE. I notice zero difference in FE with lights on or off as well. But I do notice with the 6000 wagon, climbing this one hill on the way home from work loses me 1-1.5 mpg. The same hill with the Celeb loses me 2-2.5 mpg.
__________________

Winter daily driver, parked most days right now


Summer daily driver
  Reply With Quote
Old 02-16-2009, 01:43 PM   #35 (permalink)
Master EcoModder
 
Join Date: Aug 2008
Location: South Dakota
Posts: 460

WonderWagon - '94 Ford Escort LX
Last 3: 51.52 mpg (US)

DaBluOne - '99 Ford Escort SE
90 day: 48.97 mpg (US)

DaRedOne - '99 Ford Escort ZX2 Hot
Thanks: 0
Thanked 15 Times in 4 Posts
Quote:
Originally Posted by jamesqf View Post
Sure - but I bet those transmissions weighed about as much as the whole Insight does :-) And were mostly iron & steel. Aluminium has 4-5 times the thermal conductivity.
It's the only vehicle I've ever operated that had a transmission temperature gauge.
Yeah, it's about like comparing grapes to watermelons.
No matter.

Itty-bitty car vs 20 ton 6x6 truck with Allison MT553 5sp AT (and DT466 in-line 6 diesel )
  • Greater thermal conductivity >> greater heat dissipation during warm up
    >> longer warm up for oil in itty-bitty car transmission.
  • Itty-bitty transmission mass vs MT553's mass (900lbs-1100lbs ?????)
    >> shorter warm up for oil in itty-bitty trany.
  • Less work moving 1,500-3,500lb curb weight vs ~40,000lbs curb weight >> a whole lot less friction
    >> longer warm up for oil in itty-bitty trany.
  • Tiny or non-existent transmission cooler vs large transmission cooler
    >> shorter warm up for oil in itty-bitty trany.

  Reply With Quote
Reply  Post New Thread


Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
My New 4cyl Compact Doesn't Get Good Mileage Stone Axe Introductions 13 02-08-2013 12:06 PM
EcoModding for Beginners: Getting great gas mileage. SVOboy EcoModding Central 55 08-20-2012 11:34 PM
Why I'm Choosing a Civic Over a Metro Wayneburg General Efficiency Discussion 43 03-02-2011 05:11 PM
In a world where Jeeps get horrible gas mileage.... EcoJeeper Introductions 16 03-26-2009 12:09 PM
mileage is mileage, right? (question about accuracy of small fill) Chris D. General Efficiency Discussion 16 10-21-2008 07:59 PM



Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2022, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com