Stop/start technology

Author
Discussion

kambites

67,630 posts

222 months

Thursday 27th May 2010
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rypt said:
It would mean changing how I drive as I tend to be in gear, clutch down, foot on brakes when in traffic rather than in neutral, clutch up
That's really not very good for your clutch release bearing.

GFWilliams

4,941 posts

208 months

Thursday 27th May 2010
quotequote all
When I get in my MINI the first thing I do after I start the engine is press the sport button and turn off the stop start stuff... Can't stand it!

kambites

67,630 posts

222 months

Thursday 27th May 2010
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Several people have said they don't like it now and none of them have given a reason. Would one of you care to enlighten us as to what it actually does wrong?

Rawwr

Original Poster:

22,722 posts

235 months

Thursday 27th May 2010
quotequote all
rypt said:
It would mean changing how I drive as I tend to be in gear, clutch down, foot on brakes when in traffic rather than in neutral, clutch up
Stop driving like a , then?

Sixpackpert

4,564 posts

215 months

Thursday 27th May 2010
quotequote all
rypt said:
It would mean changing how I drive as I tend to be in gear, clutch down, foot on brakes when in traffic rather than in neutral, clutch up
So it's you that burns my retinas with his brake lights then!

jon-

16,511 posts

217 months

Thursday 27th May 2010
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My girlfriends KA has it, I quite like using it as it gives you more control than the newer systems do.

It's a little key like device that you put in the right hand side of the steering wheel column. When you want the engine running you turn it clockwise and release. When you're stuck in slow moving traffic or at a long set of lights you can turn it anti clockwise to stop the engine.

rypt

2,548 posts

191 months

Thursday 27th May 2010
quotequote all
Sixpackpert said:
rypt said:
It would mean changing how I drive as I tend to be in gear, clutch down, foot on brakes when in traffic rather than in neutral, clutch up
So it's you that burns my retinas with his brake lights then!
My brake lights are not THAT bright

My main beams are however about to have some 130W rally lights put in biggrin

Edited by rypt on Thursday 27th May 12:30

RobM77

35,349 posts

235 months

Thursday 27th May 2010
quotequote all
kambites said:
rypt said:
It would mean changing how I drive as I tend to be in gear, clutch down, foot on brakes when in traffic rather than in neutral, clutch up
That's really not very good for your clutch release bearing.
Nor is it good for your knee/leg, and it's especially not good from a safety point of view. If a wasp flew in the car and stung you or something, you could release your feet and fly into the car in front, and if you're hit from behind then your body is braced against your feet, which is bad from a spinal point of view.

HellDiver

5,708 posts

183 months

Thursday 27th May 2010
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RobM77 said:
If a wasp flew in the car and stung you or something, you could release your feet and fly into the car in front,
Chances of that happening without instantly stalling the engine? 750rpm idle and popping the clutch will stall, plain and simple. Hardly "fly into the car in front".

Rawwr

Original Poster:

22,722 posts

235 months

Thursday 27th May 2010
quotequote all
HellDiver said:
Chances of that happening without instantly stalling the engine? 750rpm idle and popping the clutch will stall, plain and simple. Hardly "fly into the car in front".
I imagine if he's the type of mongoloid to keep their foot on the brake during traffic, he's possibly also the type of mongoloid to stop 1" behind the car in front smile

Sixpackpert

4,564 posts

215 months

Thursday 27th May 2010
quotequote all
rypt said:
Sixpackpert said:
rypt said:
It would mean changing how I drive as I tend to be in gear, clutch down, foot on brakes when in traffic rather than in neutral, clutch up
So it's you that burns my retinas with his brake lights then!
My brake lights are not THAT bright
You often sit behind yourself in traffic then?

rypt

2,548 posts

191 months

Thursday 27th May 2010
quotequote all
Rawwr said:
HellDiver said:
Chances of that happening without instantly stalling the engine? 750rpm idle and popping the clutch will stall, plain and simple. Hardly "fly into the car in front".
I imagine if he's the type of mongoloid to keep their foot on the brake during traffic, he's possibly also the type of mongoloid to stop 1" behind the car in front smile
Right, so I'm a mongoloid now?
And I do not stop 1" behind the car in front, I tend to actually leave a large gap ahead of me just because

Torquey

1,897 posts

229 months

Thursday 27th May 2010
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Cant say I often sit with the handbrake on, in neutral and foot off the clutch... Possibly at set of lights that take for forever to change or a traffic jam i suppose.

So when the engine turns off do the heaters, radio, wipers and lights all continue to work??

Wonder what the maintenance costs are for this when things need replacing?? Same price as a normal battery/starting motor??

MitchT

15,925 posts

210 months

Thursday 27th May 2010
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Dracoro said:
All well and good in a new reliable car. I wonder what these cars are like in 5/10/15 years time when they struggle to start, things start playing up etc.
My sentiments exactly. I forsee a future full of totally un-servicable 'tech-heavy' cars containing systems which are too complicated for affordable independents to work on and too old for main dealers to even care about.

Also, how much battery charge do you use to fire-up an engine? Surely in bad enough stop-start traffic you'll end up with a flat battery because you don't run the engine for long enough between each stop to replace the power discharged the last time you started the engine.

Owners of simple, old cars – Hang on to them!

Sixpackpert

4,564 posts

215 months

Thursday 27th May 2010
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Torquey said:
So when the engine turns off do the heaters, radio, wipers and lights all continue to work??
Yes.

kambites

67,630 posts

222 months

Thursday 27th May 2010
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I think they usually have higher capacity batteries. The starter motor is just the same as usual though, as far as I know.

GFWilliams

4,941 posts

208 months

Thursday 27th May 2010
quotequote all
kambites said:
Several people have said they don't like it now and none of them have given a reason. Would one of you care to enlighten us as to what it actually does wrong?
I gave the stop/start stuff a good try when we first got the car and found that:

a) It didn't return any noticeable fuel savings, unless in a long traffic jam which isn't moving, which you could just turn the engine off manually anyway!

b) When pulling away from the lights if you've just started the engine there is occasionally a tendency to stall, where it wouldn't have done if the engine was on.

c) It doesn't cut out early enough, so when you are coasting to the lights in Neutral (I know you shouldn't..) with foot off the clutch the engine won't cut out until you are stationary which is annoying...

d) Looks like you've stalled it pulling up to the lights!

Good things:
a) If in a queue which is on a down hill slope, you can roll down the hill in Neutral and the car will start itself when you get over 5mph!

b) Reduces emissions, so in a lower tax band

Rawwr

Original Poster:

22,722 posts

235 months

Thursday 27th May 2010
quotequote all
rypt said:
Rawwr said:
HellDiver said:
Chances of that happening without instantly stalling the engine? 750rpm idle and popping the clutch will stall, plain and simple. Hardly "fly into the car in front".
I imagine if he's the type of mongoloid to keep their foot on the brake during traffic, he's possibly also the type of mongoloid to stop 1" behind the car in front smile
Right, so I'm a mongoloid now?
Possibly.

MitchT

15,925 posts

210 months

Thursday 27th May 2010
quotequote all
GFWilliams said:
c) It doesn't cut out early enough, so when you are coasting to the lights in Neutral (I know you shouldn't..) with foot off the clutch the engine won't cut out until you are stationary which is annoying...
Having experienced the unenviable task of trying to bring my car to a halt after a faulty camshaft sensor caused it to cut-out, I can safely say that it would be far more annoying to find myself coasting toward the rear end of another vehicle with unassisted brakes.

kambites

67,630 posts

222 months

Thursday 27th May 2010
quotequote all
Stopping the engine whilst moving would presumably require a complete rethink of the braking system of most modern cars, because without the engine running you have no servo assistance.

Of course real cars don't have brake servos anyway. wink

Edited by kambites on Thursday 27th May 13:02