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

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 12-01-2008, 12:27 PM   #1 (permalink)
EcoModding Lurker
 
Join Date: Sep 2008
Location: Western MA
Posts: 11

Money Saver - '94 Honda Civic VX
Thanks: 0
Thanked 0 Times in 0 Posts
Best gear for steep hill civic vx

I'm a little confused about getting the best mileage. When going up a 1 mile fairly steep hill in my VX I at times have to use 2nd gear. Am I better off revving higher 2-2500 in 2nd or have it in 3rd pinned? Is throttle position always the indicator for mileage? As in going up a long 2-3incline would I be more efficient revving over 2,000 in 3rd of have more throttle in 4th? Thanks guys!

  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 12-01-2008, 02:31 PM   #2 (permalink)
Master EcoModder
 
Join Date: Jun 2008
Location: London, Ontario
Posts: 1,096

2k2Prot5 - '02 Mazda Protege5
90 day: 33.82 mpg (US)
Thanks: 0
Thanked 12 Times in 9 Posts
I've been wondering the same... from what i've gathered you stay in the highest gear that you can without having to be at full throttle to maintain speed. There's a hill near my work that i can stay at 40km/h in 5th gear all the way up using about 80% throttle 1500rpm, so i don't downshift. If i did downshift, i'd be at about 1900rpm using only 25% throttle.
  Reply With Quote
Old 12-01-2008, 05:39 PM   #3 (permalink)
Master EcoModder
 
basjoos's Avatar
 
Join Date: Dec 2007
Location: Upstate SC
Posts: 1,073

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: 65.31 mpg (US)
Thanks: 11
Thanked 642 Times in 289 Posts
Mileage is a combination of RPM, throttle position, and ground speed. According to the SuperMID on my car, when climbing a hill, I always get better mileage even at full throttle in a higher gear at a lower rpm than with part throttle at a lower gear at a higher rpm. But on low load conditions on flat roads, where, if the rpm gets low enough to start lugging, you can improve the mileage by dropping a gear and going gently with the throttle.
__________________
aerocivic.com
  Reply With Quote
Old 12-01-2008, 08:03 PM   #4 (permalink)
Master EcoModder
 
Join Date: Jul 2008
Location: Russellville, KY
Posts: 540
Thanks: 8
Thanked 33 Times in 27 Posts
Highest possible gear at lowest rpm.
__________________



  Reply With Quote
Old 12-02-2008, 08:25 AM   #5 (permalink)
EcoModding Lurker
 
Join Date: Sep 2008
Location: Western MA
Posts: 11

Money Saver - '94 Honda Civic VX
Thanks: 0
Thanked 0 Times in 0 Posts
Exactly the info I was looking for. Thanks guys
  Reply With Quote
Old 12-02-2008, 08:29 AM   #6 (permalink)
Master EcoModder
 
Join Date: Jun 2008
Location: London, Ontario
Posts: 1,096

2k2Prot5 - '02 Mazda Protege5
90 day: 33.82 mpg (US)
Thanks: 0
Thanked 12 Times in 9 Posts
Quote:
Originally Posted by basjoos View Post
But on low load conditions on flat roads, where, if the rpm gets low enough to start lugging, you can improve the mileage by dropping a gear and going gently with the throttle.
i didn't know that... i would normally start gently accelerating out of the chug instead.... but my 5th gear is usable at under 40km/h, so its not often i have to leave it.
  Reply With Quote
Old 12-02-2008, 09:57 AM   #7 (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
On a level road, my 5th gear is usable at xx km/h (yy mph).

Almost worth it's own thread!
Quote:
Originally Posted by MazdaMatt View Post
i didn't know that... i would normally start gently accelerating out of the chug instead.... but my 5th gear is usable at under 40km/h, so its not often i have to leave it.
On a flat road - with a '99 Escort 2.0L 5spd -
  • I can maintain 40 km/h (25 mph) in 5th gear road without a hint of chugging/engine shudder.
  • I have to be doing 43 km/h (27 mph) or better before I can (ever so gently) accelerate in 5th without chugging/engine shudder.
Give me just a smidgen of down slope and I can accelerate in 5th from about 37 km/h (23 mph).
__________________
  Reply With Quote
Old 12-02-2008, 10:09 AM   #8 (permalink)
Master EcoModder
 
Join Date: Jun 2008
Location: London, Ontario
Posts: 1,096

2k2Prot5 - '02 Mazda Protege5
90 day: 33.82 mpg (US)
Thanks: 0
Thanked 12 Times in 9 Posts
My gearing is rediculously tight... anything short of full throttle sounds smooth at 40km/h. I don't get chugging under "normal acceleration" till i'm down to 32-35. 2.0L Mazda Protege5.
  Reply With Quote
Old 12-22-2008, 04:14 PM   #9 (permalink)
EcoModding Newbie
 
Join Date: Apr 2008
Location: Southern Ontario
Posts: 284

Parachute - '03 Chevrolet Tracker LX
90 day: 28.55 mpg (US)

Peon - '95 Plymouth Neon Highline baby!
90 day: 31.39 mpg (US)

Slocus Wagon - '06 Ford Focus SE
Thanks: 0
Thanked 2 Times in 2 Posts
Looking at the big picture, sub 2000 rpm and pinned isn't really a good way to run your engine, especially if you are using 0W20 oil. Also, do you know what pinging sounds like? If your car is pinging its life will be very short. You won't save enough in gas to put in another engine...
To be a bit on the safe side, use up to 2/3 throttle down to where your engine starts lugging then downshift again.
Also, I think you are better off getting a run at a hill so you can stay in top gear longer, I haven't done experiments to prove this but its what I do anyways.
Ian
__________________


  Reply With Quote
Old 01-07-2009, 03:26 PM   #10 (permalink)
Master EcoModder
 
aerohead's Avatar
 
Join Date: Jan 2008
Location: Sanger,Texas,U.S.A.
Posts: 12,936
Thanks: 20,723
Thanked 6,327 Times in 3,925 Posts
hills

In one of my installments I posted a strategy Chrysler hypermilers came up with for the Shell Marathon competition.If you can find it in the archives or search engine,it will lay out what they discovered from experiments at the Chrysler Proving Grounds.

__________________
Photobucket album: http://s1271.photobucket.com/albums/jj622/aerohead2/
  Reply With Quote
Reply  Post New Thread


Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Civic VX & CX Spark Plug Gap flydude1221 EcoModding Central 9 07-01-2012 05:08 PM
Saturn S-Series 5th Gear Swap cfg83 EcoModding Central 61 05-02-2012 09:31 PM
Civic VX VIN Info TomO Off-Topic Tech 5 12-07-2010 02:52 PM
Civic VX wheels or aftermarket? travr6 EcoModding Central 8 03-07-2010 06:37 PM
VX Info...WARNING: lots of info! TomO Off-Topic Tech 1 01-05-2010 12:39 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