Click to go to Forum Home Click to go to maXbimmer Home

Go Back   maXbimmer Forums > Misc > Off-topic
User Name
Password


Welcome to Maxbimmer.com!

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

Reply
 
Thread Tools Rate Thread Display Modes
Old 03-28-2004, 11:03 PM   #1
sirex
King Sirex
 
Join Date: Aug 2002
Location: Toronto
Posts: 9,846
question about driving standard autmobiles.



my friend is under the impression that when he is driving if he puts the foot down on the gas, and gets to a great enough speed that he might as well just skip one of the gears.. for instance he will go from 2nd to 5th..

i see no benefit in this tactic.. he is under the impression that he is and I quote "[saving] gas"

now how can u save gas when your red lining in second and then changing to 5 th is out my mind, but anyway..

furthermore dont u put more straing on the gears?

any comments?
__________________
sirex is offline   Reply With Quote
Old 03-28-2004, 11:12 PM   #2
///m powered
dodging pylons
 
///m powered's Avatar
 
Join Date: May 2003
Location: Sacramento ,California
Posts: 3,261
Send a message via AIM to ///m powered Send a message via MSN to ///m powered
ya that doesnt sound good at all

i can get to around 45 - 50 ish in 2nd relining,, going to 5th from there would be unreasonable
__________________
///m powered is offline   Reply With Quote
Old 03-28-2004, 11:14 PM   #3
Jon@Bimmersport
MaXsponsor
 
Jon@Bimmersport's Avatar
 
Join Date: Apr 2002
Location: Mississauga
Posts: 13,787
why would u redline it in 2nd and go straight to 5th? he'd save more gas shifting at low RPMS going through the gears all the way to 5th...or jus going to the middle of 2nd, 3rd then to 5th.
__________________

Authorized Ontario dealer for Active Autowerke|VF-Engineering|[/color]ESS TuningAFE|Bilstein Suspension|H&R Suspension|KW suspension|Brembo Brake Systems| Stoptech| - Call us for the best pricing please DO NOT PM in regards to pricing

Maintenance|Performance|Tuning & Forced Induction
Jon@Bimmersport is offline   Reply With Quote
Old 03-28-2004, 11:16 PM   #4
niko_gt
6th Gear Member
 
niko_gt's Avatar
 
Join Date: Mar 2002
Location: Oakville
Posts: 2,206
your friend is stupid
__________________
niko_gt is offline   Reply With Quote
Old 03-28-2004, 11:21 PM   #5
bmwm5lover
is BMW crazy
 
bmwm5lover's Avatar
 
Join Date: Sep 2002
Location: Thornhill
Posts: 15,454
sometimes i would go from 4K 3 straight to 5th., or 4K in 2nd, to 4th, but i dont think u save gas or anything....all ur doing is preserving the synchroes, by saving them once in a while
__________________
www.enthusiastauto.caNeed a car???

His--'00 BMW ///M5 .:Jet BLK/BLK:.Individual-Style 65 Wheels; 9.5" Square Set up;275 Tires;Spacers;Black Kidneys;Muffler Delete; 3.5" Dual Tips; Beast Power; "Dinan" Ducts; E60 SSK; BC Coils
Hers--'07 BMW M5/6.:Indianapolis Red/Black:.
Toys
'88 BMW 635CSi
'81 MB 500 SEC Koenig
bmwm5lover is online now   Reply With Quote
Old 03-28-2004, 11:25 PM   #6
Jon@Bimmersport
MaXsponsor
 
Jon@Bimmersport's Avatar
 
Join Date: Apr 2002
Location: Mississauga
Posts: 13,787
your saving the synchros each time u dont ram the gears...lol

it is jus easier and less work, if ur cruising, u dont go into 3rd and then 4th jus cuz its before 4th, jus go to the gear u need.
__________________

Authorized Ontario dealer for Active Autowerke|VF-Engineering|[/color]ESS TuningAFE|Bilstein Suspension|H&R Suspension|KW suspension|Brembo Brake Systems| Stoptech| - Call us for the best pricing please DO NOT PM in regards to pricing

Maintenance|Performance|Tuning & Forced Induction
Jon@Bimmersport is offline   Reply With Quote
Old 03-29-2004, 01:08 AM   #7
King Luis
The King.
 
King Luis's Avatar
 
Join Date: May 2003
Location: Milton
Posts: 7,383
Send a message via MSN to King Luis
Quote:
Originally posted by niko_gt
your friend is stupid
well said
__________________
Current:2013 Candy White VW Golf TDI
Mods: TBD.

Sold:2004 Silver Gray M3
Mods: Dice Unit, EAS Angel Eyes, Painted Reflectors, CSL Diffuser, Smoked Corners, PSS10s, 15mm Front and 10mm Rear Spacers.

Gone:1990 Brilliantrot 325is
Mods: Alpine speakers and HU, Euro Projectors, Magnaflow Muffler, Euro Smoked Tails and GC Coilovers.
King Luis is offline   Reply With Quote
Old 03-29-2004, 01:15 AM   #8
M3ti Compact
Fuel Efficient 318 Member
 
M3ti Compact's Avatar
 
Join Date: Mar 2002
Location: Toronto
Posts: 3,465
RPM's doesn't necessarily affect fuel consumption. It's more of throttle position that determines fuel consumption. My old Camry had a fuel consumption gauge, full throttle at low RPMS ate more than high RPM and little throttle.

Going from 2nd to 5th and full throttling will definitely waste more gas than 1/8 throttle going through all the gears
__________________

Last edited by M3ti Compact; 03-29-2004 at 01:17 AM.
M3ti Compact is offline   Reply With Quote
Old 03-29-2004, 01:39 AM   #9
BigD
the misanthropist
 
BigD's Avatar
 
Join Date: May 2002
Location: a house
Posts: 6,232
Re: question about driving standard autmobiles.

Mathematically that doesn't make sense because you're achieving the same deltaV. But that's with a 100% efficient engine. Internal combustion engines are extremely inefficient, especially when working in our cars through a drive train - for every HP you produce, you waste almost as much (in a car it's probably MORE). So the less time you ask for your engine to work (force applied over a distance), the less energy you waste. So aside from the wear and tear on your engine and suspension, hauling ass up to a constant speed makes sense.

Quote:
Originally posted by sirex
my friend is under the impression that when he is driving if he puts the foot down on the gas, and gets to a great enough speed that he might as well just skip one of the gears.. for instance he will go from 2nd to 5th..

i see no benefit in this tactic.. he is under the impression that he is and I quote "[saving] gas"

now how can u save gas when your red lining in second and then changing to 5 th is out my mind, but anyway..

furthermore dont u put more straing on the gears?

any comments?
__________________
BigD is online now   Reply With Quote
Old 03-29-2004, 01:48 AM   #10
FastM3
is dreaming of ///M's
 
FastM3's Avatar
 
Join Date: Sep 2002
Location: -
Posts: 5,898
Quote:
Originally posted by niko_gt
your friend is stupid
FastM3 is offline   Reply With Quote
Old 03-29-2004, 03:48 AM   #11
AMG_POWER
500HP Member
 
Join Date: May 2002
Location: Toronto, Canada
Posts: 9,691
Quote:
Originally posted by niko_gt
your friend is stupid
Attached Images
File Type: gif werd.gif (663 Bytes, 200 views)
AMG_POWER is offline   Reply With Quote
Old 03-29-2004, 04:15 AM   #12
A~G
Car Payment Free
 
A~G's Avatar
 
Join Date: May 2002
Location: Toronto
Posts: 7,581
Send a message via MSN to A~G
Ur friends a dumbass. at 5th gear ur turning larger plates in the tranny so naturally u need more fuel to keep it turning . wasting "gas" is more like it.

correct me if i'm wrong. I prefer to be corrected and learn something than to continue thinking i'm right.. (Big D ... aka Mr. Physics )
__________________



A~G

Man who run in front of car get tired.
Man who run behind car get exhausted.

Last edited by A~G; 03-29-2004 at 04:17 AM.
A~G is offline   Reply With Quote
Old 03-29-2004, 04:18 AM   #13
DAM
Trinational 951
 
DAM's Avatar
 
Join Date: Jun 2002
Location: the M5V
Posts: 2,958
i do that, just dont' red line, or skip 2 gears, if i am driving conservativly and rev up to 4000, i will skip from 2nd to fourth. As long as you dont' put your foot to the floor after the shift, you are not straining the gears. I am not sure how much gas it actuall saves, but less shifts do mean longer clutch life.
__________________
You drive to work? I work to drive.
DAM is offline   Reply With Quote
Old 03-29-2004, 04:18 AM   #14
SickFinga
Moderator
 
SickFinga's Avatar
 
Join Date: Jan 2002
Location: Location:
Posts: 16,582
Quote:
Originally posted by A~G
Ur friends a dumbass. at 5th gear ur turning larger plates in the tranny so naturally u need more fuel to keep it turning . wasting "gas" is more like it.
Not exactly true.

In 5th gear doing 90km/h you are using way less gas than in 1st gear doing 20km/h
But you will waste way more gas doing 20km/h in 5th gear.

Being in higher gear at low speed puts a lot of stress to the engine - wasting more gas, oil and not very good for the engine life.


Sometimes i do 2nd o 4th when Im being lazy, but VERY rarely
SickFinga is offline   Reply With Quote
Old 03-29-2004, 04:24 AM   #15
A~G
Car Payment Free
 
A~G's Avatar
 
Join Date: May 2002
Location: Toronto
Posts: 7,581
Send a message via MSN to A~G
Quote:
Originally posted by SickFinga
Not exactly true.

In 5th gear doing 90km/h you are using way less gas than in 1st gear doing 20km/h
But you will waste way more gas doing 20km/h in 5th gear.

Being in higher gear at low speed puts a lot of stress to the engine - wasting more gas, oil and not very good for the engine life.


Sometimes i do 2nd o 4th when Im being lazy, but VERY rarely
thatz what i mean though.. if he goes from 1st to 5th, he's going what... like maybe 50km/h... when he puts it into 5th it takes alot of fuel to keep it rotating and bring it up to speed???right?no? maybe? i dunno?
__________________



A~G

Man who run in front of car get tired.
Man who run behind car get exhausted.
A~G is offline   Reply With Quote
Reply

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

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 On

Forum Jump


All times are GMT -4. The time now is 01:53 PM.


Powered by vBulletin® Version 3.8.1
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Maxbimmer Copyright 2001 - 2015