Skip Shifting? - Page 2 - Fuelly Forums

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

Reply
 
Thread Tools Display Modes
 
Old 02-20-2013, 03:57 AM   #11
Registered Member
 
theholycow's Avatar
 
Join Date: Apr 2008
Posts: 6,624
Country: United States
Send a message via ICQ to theholycow Send a message via AIM to theholycow Send a message via MSN to theholycow Send a message via Yahoo to theholycow
Quote:
Originally Posted by 8$PG View Post
I'm pretty sure it does save fuel skipping gears, if it'll get you faster up to the highest possible gear for the intended final cruising speed. When there is slow accelerating traffic ahead stepping through all of the gears might be better.
For whatever it's worth, that is opposite of the behavior enforced by CAGS, which makes you skip gears if you're behind slow traffic and lets you use all your gears if you're accelerating hard.

Also, I should note that in my analysis in an earlier post I said it was to cheat the EPA MPG rating system, and that was close but it was actually to avoid the gas guzzler tax. I don't think that tax exists anymore, though there are of course fines for CAFE violations.
__________________

__________________
This sig may return, some day.
theholycow is offline   Reply With Quote
Old 02-20-2013, 04:22 AM   #12
Registered Member
 
Join Date: Jan 2012
Posts: 70
Country: Sweden
Thats true (I misread the original post, thought it was skipping 1:st and starting from 2:nd) but lingering in first gear during slow acceleration sounds like a really bad behavior for FE. Might be some other reason they do that.

Most recommendations says 1:st gear should only be used a couple of meters to two car lengths from standstill until 2:nd gear can be engaged.
__________________

__________________
8$PG is offline   Reply With Quote
Old 02-20-2013, 04:30 AM   #13
Site Team / Moderator
 
Jay2TheRescue's Avatar
 
Join Date: Sep 2008
Location: Northern Virginia
Posts: 4,657
Country: United States
Location: Northern Virginia
When I used to drive a stick regularly I had a 1981 AMC Spirit with a 4 speed. I would regularly start in 2nd, and shift to 4th skipping 1st and 3rd.
__________________






Jay2TheRescue is offline   Reply With Quote
Old 02-20-2013, 04:34 AM   #14
Registered Member
 
Join Date: Jan 2012
Posts: 70
Country: Sweden
Quote:
Originally Posted by Jay2TheRescue View Post
When I used to drive a stick regularly I had a 1981 AMC Spirit with a 4 speed. I would regularly start in 2nd, and shift to 4th skipping 1st and 3rd.
Maybe with a torque converter and tall gearing 1:st and 3:rd is the equivalent of 2:nd and 4:th in a manual. In that case it does make some sense.
__________________
8$PG is offline   Reply With Quote
Old 02-20-2013, 07:07 AM   #15
Registered Member
 
theholycow's Avatar
 
Join Date: Apr 2008
Posts: 6,624
Country: United States
Send a message via ICQ to theholycow Send a message via AIM to theholycow Send a message via MSN to theholycow Send a message via Yahoo to theholycow
Quote:
Originally Posted by 8$PG View Post
Maybe with a torque converter and tall gearing 1:st and 3:rd is the equivalent of 2:nd and 4:th in a manual. In that case it does make some sense.
Yup. In reading up on ratios for various vehicles I've found that to be pretty common when comparing a 4 speed automatic with a 5 speed manual. Also, 5th in the manual tends to be shorter than 4th in the automatic.
__________________
This sig may return, some day.
theholycow is offline   Reply With Quote
Old 02-26-2013, 10:18 PM   #16
Registered Member
 
VX_Arky's Avatar
 
Join Date: Mar 2011
Posts: 327
Country: United States
Location: Jonesboro, Arkansas
Just wondering what others' experiences are like. In my VX, there is no way I can start out in second unless I want to rattle around for about 50 feet. However, I can drive 5 feet in first gear and move to second with no problem. This the same for most everyone else or just me?
VX_Arky is offline   Reply With Quote
Old 02-27-2013, 04:13 AM   #17
Registered Member
 
theholycow's Avatar
 
Join Date: Apr 2008
Posts: 6,624
Country: United States
Send a message via ICQ to theholycow Send a message via AIM to theholycow Send a message via MSN to theholycow Send a message via Yahoo to theholycow
2008 VW Rabbit, 2003 Pontiac Sunfire, and my converted 1980 Buick LeSabre can all launch in 2nd easily. Launching in 3rd is smooth but slow in all 3. Those 3rd launches were mis-shifts.
__________________
This sig may return, some day.
theholycow is offline   Reply With Quote
Old 02-27-2013, 06:31 AM   #18
Registered Member
 
Join Date: Jan 2012
Posts: 70
Country: Sweden
Starting from second usually gets you nowhere, but when starting from a downhill slope it's real practical because you immediately get the engine brake you need and dfco.
__________________
8$PG is offline   Reply With Quote
Old 03-14-2013, 05:16 AM   #19
Registered Member
 
Join Date: Jan 2012
Posts: 70
Country: Sweden
New ZF 9-speed transmission incorporates skip shift.

Green Car Congress: Land Rover to demonstrate ZF 9-speed automatic transmission; up to 16% fuel savings over standard 6-speed automatic
__________________
8$PG is offline   Reply With Quote
Old 03-15-2013, 12:41 AM   #20
Registered Member
 
alvaro84's Avatar
 
Join Date: Jun 2012
Posts: 215
Country: Hungary
Location: Fehérvárcsurgó
Quote:
Originally Posted by 8$PG View Post
Starting from second usually gets you nowhere, but when starting from a downhill slope it's real practical because you immediately get the engine brake you need and dfco.
I don't get too much DFCO with a cold engine.
__________________

alvaro84 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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Need to break out drivetrains Carphunter Fuelly Web Support and Community News 6 12-21-2016 06:05 AM
Partial Fuel-up Calculations Improvements ryogajyc Fuelly Web Support and Community News 16 04-17-2012 09:25 AM
Hi from Gabet123 (HHO INFO ADMIN) gabet123 Introduce Yourself - New member Welcome 3 03-24-2011 04:53 AM
Why fill my tank? acidtonic Fuelly Web Support and Community News 11 12-27-2010 07:27 AM
Spark plugs cruiserdarren General Fuel Topics 4 04-19-2008 08:44 PM

Powered by vBadvanced CMPS v3.2.3


All times are GMT -8. The time now is 02:53 PM.


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