Welcome Guest ( Log In | Register )

35 Pages < 1 2 3 4 > » Bottom

Outline · [ Standard ] · Linear+

> RPM reading @ 110km/h, survey

views
     
LeVis_Jeans
post Aug 1 2008, 10:03 AM

On my way
****
Senior Member
506 posts

Joined: Jul 2007


QUOTE(alabais @ Aug 1 2008, 10:01 AM)
Wira 1.5(M) 3.8K RPM for 110km/h ..
*
What gear u use ?
shado
post Aug 1 2008, 10:03 AM

Getting Started
**
Junior Member
277 posts

Joined: May 2006
Kelisa (M) 1.0
3000rpm @ 110km/h
sphiroth
post Aug 1 2008, 10:06 AM

Look at all my stars!!
*******
Senior Member
2,804 posts

Joined: Jan 2003
QUOTE(LeVis_Jeans @ Aug 1 2008, 09:59 AM)
My Gen2 campro engine also same.. consume petrol so much when RPM over 3k.  sad.gif
*
I feels that there is no difference in term of FC while cruising at 110km/h and 14km/h. Several CPS user also confirmed this. hmm.gif

QUOTE(sleepwalker @ Aug 1 2008, 10:02 AM)
You are wrong. It will not change. Your speedo comes from your gearbox. It is fixed. Changing the size of the wheel will not change the readings on your speedo meter. It does not matter whether you change to 20inch. If the rpm is 3000rpm at 110km/h on the respective tacho and speedo meter, it will remain at 3000rpm at 110km/h even if you change it to 20inch (even though you are travelling at 130km/h).

You have to remember that there are always 2 speeds.

1. KM/H on speedo meter (this cannot change as it is a fixed reading from the gearbox)
2. KM/H actual speed (this will change depending on the OD of your wheel)

What we are talking here is the reading on the speedo and tacho meter. Actual speed aka real speed aka speed captured by speed camera will change but not the reading on the speedo and tacho.
*
Correct. Only the actual speed will change when changing rims size. Can try to googled cars bible and use the provieded calculator to see how much the difference.
chitchat
post Aug 1 2008, 10:07 AM

Casual
***
Junior Member
457 posts

Joined: Oct 2004


sleepwalker: can you explain a bit what is "clutch is slipping" ? Clutch want finish already, no teeth ?
invisiblelim
post Aug 1 2008, 10:11 AM

Regular
******
Senior Member
1,253 posts

Joined: Aug 2005


i wanna ask.. i driving Kancil 850 Auto, RPM is maintain 3k when i was on 80km/h, is count normal or got problem? full tank RM60, can only go for 200+ km, count as normal??

This post has been edited by invisiblelim: Aug 1 2008, 10:11 AM
sleepwalker
post Aug 1 2008, 10:13 AM

Need sleep....
Group Icon
Staff
5,374 posts

Joined: Jan 2003
From: the lack of sleep


QUOTE(chitchat @ Aug 1 2008, 10:07 AM)
sleepwalker: can you explain a bit what is "clutch is slipping" ? Clutch want finish already, no teeth ?
*
The clutch has no teeth. The clutch disc has materials similar to the brake pads. Once that wears out, it starts to slip.

Engine crankshaft -> Flywheel -> Clutch -> gearbox. IF clutch is working then..

3000rpm at crank -> 3000rpm at flywheel -> 3000rpm clutch -> 3000rpm gearbox

If clutch slipping then

3000rpm at crank -> 3000rpm at flywheel -> 2500rpm clutch (slipping, can't hold on to flywheel) -> 2500rpm gearbox.


THis is just a rough explanation. Go google for full explanation.

This post has been edited by sleepwalker: Aug 1 2008, 10:15 AM
nimrod2
post Aug 1 2008, 10:15 AM

the imba one
*******
Senior Member
2,521 posts

Joined: Jan 2006
From: UrbanSubangJaya



QUOTE(invisiblelim @ Aug 1 2008, 10:11 AM)
i wanna ask.. i driving Kancil 850 Auto, RPM is maintain 3k when i was on 80km/h, is count normal or got problem? full tank RM60, can only go for 200+ km, count as normal??
*
your car engine 850cc only mah. cant get high speeds. at high speeds, u pushing the engine too far and this means higher fuel consumption biggrin.gif

my old iswara was about 3.1k @ 110km/h.


LeVis_Jeans
post Aug 1 2008, 10:18 AM

On my way
****
Senior Member
506 posts

Joined: Jul 2007


QUOTE(sphiroth @ Aug 1 2008, 10:06 AM)
I feels that there is no difference in term of FC while cruising at 110km/h and 14km/h. Several CPS user also confirmed this.  hmm.gif
Correct. Only the actual speed will change when changing rims size. Can try to googled cars bible and use the provieded calculator to see how much the difference.
*
I using campro tongue.gif
I also tried before...if i run over 130-160kmh (RPM stick at 3.5-4k). Only can run over 480KM per tank.
If drive slow slow 90KMH (RPM only 2.5-2.7k). I can run over 550KM per tank.

This post has been edited by LeVis_Jeans: Aug 1 2008, 10:19 AM
invisiblelim
post Aug 1 2008, 10:20 AM

Regular
******
Senior Member
1,253 posts

Joined: Aug 2005


QUOTE(nimrod2 @ Aug 1 2008, 10:15 AM)
your car engine 850cc only mah. cant get high speeds. at high speeds, u pushing the engine too far and this means higher fuel consumption biggrin.gif

my old iswara was about 3.1k @ 110km/h.
*
oh.. that means is normal de la? cause really feel like high fuel comsumption =.= i thought kancil should be save fuel de ma =.= rclxub.gif
nimrod2
post Aug 1 2008, 10:23 AM

the imba one
*******
Senior Member
2,521 posts

Joined: Jan 2006
From: UrbanSubangJaya



QUOTE(LeVis_Jeans @ Aug 1 2008, 10:18 AM)
I using campro tongue.gif
I also tried before...if i run over 130-160kmh (RPM stick at 3.5-4k). Only can run over 480KM per tank.
If drive slow slow 90KMH (RPM only 2.5-2.7k). I can run over 550KM per tank.
*
haha of course ler. lower rpm = lower engine power = less fuel consumtion lor biggrin.gif

QUOTE(invisiblelim @ Aug 1 2008, 10:20 AM)
oh.. that means is normal de la? cause really feel like high fuel comsumption =.= i thought kancil should be save fuel de ma =.= rclxub.gif
*
erm i'm not sure lah but coz your engine capacity is small, thus cant go higher speeds ler.
i think its efficient if u stay below 90km/h and city driving n stuff.
thats what i know.

unless the pro's here can explain better biggrin.gif
sleepwalker
post Aug 1 2008, 10:25 AM

Need sleep....
Group Icon
Staff
5,374 posts

Joined: Jan 2003
From: the lack of sleep


QUOTE(sphiroth @ Aug 1 2008, 10:06 AM)
I feels that there is no difference in term of FC while cruising at 110km/h and 14km/h. Several CPS user also confirmed this.  hmm.gif
Correct. Only the actual speed will change when changing rims size. Can try to googled cars bible and use the provieded calculator to see how much the difference.
*
FOr a moment there I thought you wrote 14km/h.. wait.. you did write 14km/h but you meant 140km/h right?

There would be a diffence. The other CPS users are wrong. For most road cars that is not aerodynamic in shape (like those lambo/Ferrari type), wind resistance becomes your number 1 fuel comsumption killer. For most cars, max efficiency is gain around 90-100km/h where the best rpm to speed ratio is gain and wind resistance is not an issue. Any slower and the rpm to speed ratio is no longer efficient as you take longer to reach your destination and any higher speed would encounter wind resistance that will require more fuel to keep the car running at that speed.
nimrod2
post Aug 1 2008, 10:31 AM

the imba one
*******
Senior Member
2,521 posts

Joined: Jan 2006
From: UrbanSubangJaya



QUOTE(sleepwalker @ Aug 1 2008, 10:25 AM)
For most cars, max efficiency is gain around 90-100km/h where the best rpm to speed ratio is gain and wind resistance is not an issue. Any slower and the rpm to speed ratio is no longer efficient as you take longer to reach your destination and any higher speed would encounter wind resistance that will require more fuel to keep the car running at that speed.
*
i thought maybe around 70-80km/h would be better?

are u sure its not?

of course driving styles play an important role too.
but comparitively, driving at 70km/h vs 90km/h, it wont save fuel to drive slower?
peris
post Aug 1 2008, 10:34 AM

Getting Started
**
Junior Member
227 posts

Joined: Nov 2007
From: Kangar-PJ-Dengkil


QUOTE(sleepwalker @ Aug 1 2008, 09:42 AM)

Added on August 1, 2008, 9:44 am
Wrong. Rusty nail is correct. Your RPM per KM/H on your dashboard will still remain the same. The only thing that will change is your actual speed and not speedo speed, meaning if the police shoots the laser camera at you, then you will be driving at 120km/h but speed still show 110km/h. That is how bigger wheel OD will affect you. It will not affect your speedo but affects your actual speed.
*
is't..lol..my satria using 16' rims...so how i wanna know how fast i drive then?
i'm a good citizen..dun wan to be caught by police tongue.gif
kayz1e
post Aug 1 2008, 10:35 AM

- nEwbiE ^^"V -
******
Senior Member
1,401 posts

Joined: Jan 2003
From: kay el



1.3 SAGA LMST

3k rpm @ 100km/h
3/5k rpm @ 120km/h
4k rpm @ 140km/h

IF IM NOT MISTAKEN LA
b00n
post Aug 1 2008, 10:36 AM

delusional
Group Icon
Staff
9,137 posts

Joined: Jun 2007
From: Wouldn't be around much, pls PM other mods.



The common fuel efficiency gauge is on 90km/h at RPM 2k. That's the myth.
peris
post Aug 1 2008, 10:42 AM

Getting Started
**
Junior Member
227 posts

Joined: Nov 2007
From: Kangar-PJ-Dengkil


QUOTE(b00n @ Aug 1 2008, 10:36 AM)
The common fuel efficiency gauge is on 90km/h at RPM 2k. That's the myth.
*
proton savvy that used to get in Malaysian Book Of record For MOST FC car (if not mistaken) been driven at 90KM/H
nimrod2
post Aug 1 2008, 10:45 AM

the imba one
*******
Senior Member
2,521 posts

Joined: Jan 2006
From: UrbanSubangJaya



QUOTE(b00n @ Aug 1 2008, 10:36 AM)
The common fuel efficiency gauge is on 90km/h at RPM 2k. That's the myth.
*
i think its more like urban legend.

haha i think for high capacity engines, its possible to have lower rpms.

for a 3.0L accord or bmw, i think the revs is around 2.5k or lower.
chitchat
post Aug 1 2008, 10:54 AM

Casual
***
Junior Member
457 posts

Joined: Oct 2004


sleepwalker: thanks for the info
Traveler
post Aug 1 2008, 11:01 AM

Mad Hard Disk Collector
Group Icon
Elite
794 posts

Joined: Jan 2003
From: Tak Boleh Land


QUOTE(nimrod2 @ Aug 1 2008, 10:45 AM)
haha i think for high capacity engines, its possible to have lower rpms.

for a 3.0L accord or bmw, i think the revs is around 2.5k or lower.
*
That's true. A 2.5L 325i revs around 2k rpm at 110km/h IIRC.
RCrex
post Aug 1 2008, 11:06 AM

The man who turn impossible to possible...
*******
Senior Member
2,251 posts

Joined: Jan 2008
From: kuching


from my experience
i used to drive mazda 929 wif 2.0v6 engine
auto
it cruise at 110km/h wif 2k rpm if not mistaken

as now driving S/neo
also auto but 1.6
in the speed of 110km/h
i think the rpm is above 3k since 80km/h adi need 2.5k rpm adi -.-

should b looking for the power of the engine instead of juz rpm i guess tongue.gif

35 Pages < 1 2 3 4 > » Top
 

Switch to:
| Lo-Fi Version
0.0490sec    2.17    6 queries    GZIP Disabled
Time is now: 22nd February 2020 - 08:50 PM