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


Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 09-02-2013, 09:18 PM   #21 (permalink)
EcoModding Apprentice
 
Join Date: Aug 2008
Location: Everett WA
Posts: 109
Thanks: 6
Thanked 17 Times in 15 Posts
Quote:
Originally Posted by Xist View Post
My sister and I made a trip to California and back in her husband's new Elantra. I had thought that it was a beautiful car and was surprised that they bought it new for $16,000. We got at least 36 MPG the entire trip, "driving the speed limit." It turns out that is Sister for 4 MPH over, so 79 in a 75.
Only by excellent luck was I able to buy my auto Elantra with lots of nice options for $15,500, but I did. Elantra is supremely beautiful, but of exceedingly low 131 lbs-ft of torque. Recently, a highway trip & return with travels into a town & a smaller city w/two major cool-downs, but freeway travel limited to GPS:62mph(mostly) to GPS:66-69mph(occasionally), netted a trip computer reading of 43.8 mpg. Your extra speed travels at 79 mph netting 36mpg, shows how the Elantra small torque will kill mpg, despite Elantra being fairly aerodynamic(no mods).

  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 09-03-2013, 12:03 AM   #22 (permalink)
Not Doug
 
Xist's Avatar
 
Join Date: Jun 2012
Location: Show Low, AZ
Posts: 7,174

Chorizo - '00 Honda Civic HX, baby! :D
90 day: 34.82 mpg (US)

Mid-Life Crisis Fighter - '99 Honda Accord LX
90 day: 34.3 mpg (US)
Thanks: 4,446
Thanked 1,387 Times in 1,044 Posts
Quote:
Originally Posted by litesong View Post
Only by excellent luck was I able to buy my auto Elantra with lots of nice options for $15,500, but I did. Elantra is supremely beautiful, but of exceedingly low 131 lbs-ft of torque. Recently, a highway trip & return with travels into a town & a smaller city w/two major cool-downs, but freeway travel limited to GPS:62mph(mostly) to GPS:66-69mph(occasionally), netted a trip computer reading of 43.8 mpg. Your extra speed travels at 79 mph netting 36mpg, shows how the Elantra small torque will kill mpg, despite Elantra being fairly aerodynamic(no mods).
My brother-in-law complains that the car lacks power for hills, but my sister says that he must not know how to downshift.

Sure, had I driven by myself, I would have wanted to drive fifty-five, but we needed to drop our lives, hurry out there, help the family, rush back, and try to catch up. Even though one nephew had the iPad and the other had an iPhone, hardly anybody likes traveling.
  Reply With Quote
Old 09-03-2013, 12:46 AM   #23 (permalink)
EcoModding Apprentice
 
Join Date: Aug 2008
Location: Everett WA
Posts: 109
Thanks: 6
Thanked 17 Times in 15 Posts
Quote:
Originally Posted by Xist View Post
My brother-in-law complains that the car lacks power for hills, but my sister says that he must not know how to downshift.

Sure, had I driven by myself, I would have wanted to drive fifty-five......hardly anybody likes traveling.
Yes, Elantra must be downshifted for hills & as much as 2 or 3 gears. Things can be done to hold higher mpg, often concerning those hills. Without knowledge, hills will take huge chunks of mpg away from drivers. Actually, the extra speeds (& speed) can be used as an ally to keep mpg up, but again, it takes fore-thought & knowledge.

Ah, Arizona is wonderful to travel in. Too bad the family was rushed not to enjoy travel, landscapes & viewing new territory.

Last edited by litesong; 02-15-2019 at 03:51 PM..
  Reply With Quote
Old 09-03-2013, 03:44 AM   #24 (permalink)
The brake pedal is evil
 
Join Date: Jan 2013
Location: California__ Awsome: Yes
Posts: 374

Trolla - '94 Geo Prizm base
90 day: 35.82 mpg (US)

Ecomodded prizm - '94 geo Prizm Base
90 day: 37.88 mpg (US)

Dad's Corolla - '89 Toyota Corolla Base.
90 day: 29.51 mpg (US)

Denny's Detector - '08 Mercury Grand Marquis

Project E - '94 Geo Prizm Base
Team Toyota
90 day: 39.69 mpg (US)
Thanks: 4
Thanked 47 Times in 44 Posts
My Prizm can climb a 5% grade past 2000 ft with 100 degree ambients in 5th gear. I am not amused.
__________________
Getting sensor data off of a pre OBDII Toyota ECU via TDCL.
All of this is on E10: Project E is my current focus.

  Reply With Quote
Old 09-03-2013, 02:35 PM   #25 (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
I like auxiliary transmissions, personally. In a 5&4 setup, you get something like 20 nominal ranges, but there are overlaps, and if you know your input/output ratios and what the engine /wants/ versus what you want, you can do some funny things with it... for instance, in one of the old trucks we had, you might split between 3/2 and 3/3 by shifting to 2/5 or 1/5. It takes a bit of practice and understanding of the ratios to do things like that, though.

I really love multi-speed transmissions. The loss in forward momentum can be solved with dual clutch gearboxes though. Ask VW about that.
__________________
"ʞɐǝɹɟ ɐ ǝɹ,noʎ uǝɥʍ 'ʇı ʇ,usı 'ʎlǝuol s,ʇı"

  Reply With Quote
Old 09-03-2013, 04:27 PM   #26 (permalink)
The brake pedal is evil
 
Join Date: Jan 2013
Location: California__ Awsome: Yes
Posts: 374

Trolla - '94 Geo Prizm base
90 day: 35.82 mpg (US)

Ecomodded prizm - '94 geo Prizm Base
90 day: 37.88 mpg (US)

Dad's Corolla - '89 Toyota Corolla Base.
90 day: 29.51 mpg (US)

Denny's Detector - '08 Mercury Grand Marquis

Project E - '94 Geo Prizm Base
Team Toyota
90 day: 39.69 mpg (US)
Thanks: 4
Thanked 47 Times in 44 Posts
I don't like how small the ratio between my top gear and 1st gear is, it is only 4.34 on a 5 speed, I have plenty of power in 5th gear to the point that I think toyota should have made 4th as tall as 5th and made 5th taller.
__________________
Getting sensor data off of a pre OBDII Toyota ECU via TDCL.
All of this is on E10: Project E is my current focus.

  Reply With Quote
Old 09-03-2013, 06:01 PM   #27 (permalink)
...beats walking...
 
Join Date: Jul 2009
Location: .
Posts: 6,191
Thanks: 179
Thanked 1,519 Times in 1,120 Posts
...back-in-the-day, most generic 3-speed automatics had axle-ratio gears of 2.73 or there abouts (seldom higher than 3.18); most non-muscle models used 3.23 or maybe 3.55 ratios; and, muscle models used 3.91-4.10 ratios.
  Reply With Quote
Old 11-07-2013, 04:43 PM   #28 (permalink)
It's all about Diesel
 
cRiPpLe_rOoStEr's Avatar
 
Join Date: Oct 2012
Location: Porto Alegre, Rio Grande do Sul, Brazil
Posts: 7,085
Thanks: 0
Thanked 712 Times in 628 Posts
Fiat Siena, with the same driveline.



  Reply With Quote
Old 02-15-2019, 04:43 PM   #29 (permalink)
EcoModding Apprentice
 
Join Date: Aug 2008
Location: Everett WA
Posts: 109
Thanks: 6
Thanked 17 Times in 15 Posts
Quote:
Originally Posted by Frank Lee View Post
With my 5-speeds I'm always skip shifting, like 1-3-5. I would like to only have the 1-3-5 gears and throw 2-4 away and save the internal trans losses.
This long 6 year inactive thread considered the pros & cons of extra geared transmissions. In general, I agree with Frank Lee, whether transmissions are automatic, CVT, DCT, or manual. Since this thread's last post, the disastrous CVT, DCT, & 9 & 10 speed automatic repair follies for so many customers, have blasted to bits the desire to save gasoline money, while giving ten(20?) times more money to transmission mechanics. What.... only Toyota probably "succeeded" with their high MPG auto transmissions. Other brands?
At their best, these automatic transmissions MAY have gotten similar MPG to manual transmissions, but only if drivers used automatic transmissions in ways most auto transmission drivers would not.
I have had a CVT transmission in the past, & presently we have two Elantras, one 6-speed manual, & one 6-speed automatic. I used the CVT to deliver the same & better MPG than other alternative 5-speed manual transmission drivers for the brand. As to our Elantras, I have worked hard to get good MPG from both, which are similar. Under certain conditions tho, the manual gains more MPG than the automatic.
Anyhow, 3 of our 4 cars have manual transmissions (oh, yeah....4, 5 & two 6-speeds).

Last edited by litesong; 02-19-2019 at 03:03 PM..
  Reply With Quote
Old 02-16-2019, 04:05 PM   #30 (permalink)
Master EcoModder
 
Join Date: Oct 2009
Location: Fort Worth, Texas
Posts: 2,106

2004 CTD - '04 DODGE RAM 2500 SLT
Team Cummins
90 day: 19.36 mpg (US)
Thanks: 1,106
Thanked 558 Times in 427 Posts
Skip gears. Means car improperly-loaded. A situation which shouldnt happen but rarely is considered the norm.

And what benefits accrue on skip-shifting?

__________________
2004.0 DODGE Ram QC/LB 2500 2WD/NV-5600 305/555 ISB. 7,940-lb. Stock. 200,000 miles/5000-hrs @ 40-mph average.
1990 35' Silver Streak TT 7,900-lb.
11-cpm solo & 19-cpm towing; 21-mpg average past 54k-miles
Sold: 1983 Silver Streak 3411
  Reply With Quote
Reply  Post New Thread


Thread Tools




Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2019, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com