Using the miniumum of throttle when pulling away
Discussion
I lately gotten into the habit of pulling away at junctions and lights with so little throttle that any less and the car would stall. You can feel the engine almost rumbling almost as if its asking for more fuel. Is what I am doing bad, I mean is it bad for the car? Should I give it some more fuel so the sensation of stalling is no more?
Vyse said:
I lately gotten into the habit of pulling away at junctions and lights with so little throttle that any less and the car would stall. You can feel the engine almost rumbling almost as if its asking for more fuel. Is what I am doing bad, I mean is it bad for the car? Should I give it some more fuel so the sensation of stalling is no more?
Are you being serious?OK - assuming you are...
Engine at idle - no transmission - engine is happily working. It isn't being asked to do anything.
Engage transmission - and happy little engine is now being asked to move 1.5 tons of metal.... with no juice.
You can try this yourself.
Sit on your sofa for 30 minutes. - Only take very small breaths.
Now get off your backside and run as fast as can - but do not increase your air intake.
You won't be able to keep it up for long.
Apart from using an unnecessary amount of fuel, I doubt it'll do much harm to a modern engine. I guess you might wear the clutch a bit faster, since you'll be slipping it for longer than you usually would.
I can't imagine why you'd do it though, there are no upsides as far as I can see?
I can't imagine why you'd do it though, there are no upsides as far as I can see?
Vyse said:
I lately gotten into the habit of pulling away at junctions and lights with so little throttle that any less and the car would stall. You can feel the engine almost rumbling almost as if its asking for more fuel. Is what I am doing bad, I mean is it bad for the car? Should I give it some more fuel so the sensation of stalling is no more?
Oh dear god are you one of them?! As far as I understand it you are not only holding everybody up but you are putting your engine under unnecessary load. You would probably use less fuel by giving it more throttle oddly enough.
I apply as little throttle as possible on the way to work when pulling away, but then again I rarely see another car on the way to work so it doesn't matter how long it takes me to pull away.
Managing to get incredible mpg out of my 1.0 shed currently, I find it secretly enjoyable actually.
If your getting a stalling sensation you really need to apply a bit more throttle but obviously you already knew this because you wouldn't seriously post such a daft thing on a car forum would you...
Managing to get incredible mpg out of my 1.0 shed currently, I find it secretly enjoyable actually.
If your getting a stalling sensation you really need to apply a bit more throttle but obviously you already knew this because you wouldn't seriously post such a daft thing on a car forum would you...
What you are doing to your engine is the same as "labouring" it in any gear. It's just that you're doing it from stationary.
It's the equivalent of riding a bicycle in too high a gear. You can do it but you have to stand on the pedals and apply massive force - much more force than if you are in the right gear and at the right rpm. In a car these forces mean the pistons will be pushing harder against the side of their bores and causes increased wear.
"As a piston is pushed down the cylinder on its power stroke, the piston will meet resistance as it tries to turn the crankshaft. The greater the load on an engine, the greater this resistance will be. The resistance will cause the piston to be pushed to one side with considerable force, as it is also pushed down the bore by the hot expanding air/fuel gasses above it. This side force is known as thrust, and it causes one side of the cylinder walls to wear at a faster rate than the rest of the cylinder wall. The side of the engine where this thrust acts is known as the thrust side of the engine." http://86.43.94.97/moodlecp9a/mod/glossary/showent...
It's much better for the engine if you use more revs rather then fewer revs.
It's the equivalent of riding a bicycle in too high a gear. You can do it but you have to stand on the pedals and apply massive force - much more force than if you are in the right gear and at the right rpm. In a car these forces mean the pistons will be pushing harder against the side of their bores and causes increased wear.
"As a piston is pushed down the cylinder on its power stroke, the piston will meet resistance as it tries to turn the crankshaft. The greater the load on an engine, the greater this resistance will be. The resistance will cause the piston to be pushed to one side with considerable force, as it is also pushed down the bore by the hot expanding air/fuel gasses above it. This side force is known as thrust, and it causes one side of the cylinder walls to wear at a faster rate than the rest of the cylinder wall. The side of the engine where this thrust acts is known as the thrust side of the engine." http://86.43.94.97/moodlecp9a/mod/glossary/showent...
It's much better for the engine if you use more revs rather then fewer revs.
Luckily not. Its a petrol engine.
I tend to do it for a fraction of a second or so, then accelerate to normal cruising speeds. Don't get me wrong I am not accelerating slowly to get up to speed. I am just using the tinniest amount of throttle to get going for the first meter then its foot down. It's a modern Ford Fiesta so hopefully it should be too big an issue for it.
I tend to do it for a fraction of a second or so, then accelerate to normal cruising speeds. Don't get me wrong I am not accelerating slowly to get up to speed. I am just using the tinniest amount of throttle to get going for the first meter then its foot down. It's a modern Ford Fiesta so hopefully it should be too big an issue for it.
andy-xr said:
Dual Mass Flywheel?
Prepare for some bills coming your way!
Prepare for some bills coming your way!
andy-xr said:
Dual Mass Flywheel?
Prepare for some bills coming your way!
The biggest cause of Dual Mass failure is people being in too high a gear apparently. Prepare for some bills coming your way!
I can if I feel like it, get to 35 mph and 5th gear without touching the throttle. Big torquey diesel and very careful clutch control. I choose not to do it, because it's pointless.
Welshbeef said:
All auto BMW's unless in sport mode pull away in 2nd gear.
Why would you nearly stall it pulling away? Imagine pulling out of a junction or onto a roundabout and it actually stalls... At best cars would have to slow at worst swerve/impact either you or another vehicle.
That sounds like absolute bullsWhy would you nearly stall it pulling away? Imagine pulling out of a junction or onto a roundabout and it actually stalls... At best cars would have to slow at worst swerve/impact either you or another vehicle.
t, you got a source for that?Edited by Transiter on Tuesday 20th January 21:48
Transiter said:
Welshbeef said:
All auto BMW's unless in sport mode pull away in 2nd gear.
Why would you nearly stall it pulling away? Imagine pulling out of a junction or onto a roundabout and it actually stalls... At best cars would have to slow at worst swerve/impact either you or another vehicle.
That sounds like absolute bullsWhy would you nearly stall it pulling away? Imagine pulling out of a junction or onto a roundabout and it actually stalls... At best cars would have to slow at worst swerve/impact either you or another vehicle.
t, you got a source for that?Edited by Transiter on Tuesday 20th January 21:48
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