Runaway Mini!

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anonymous-user

Original Poster:

54 months

Wednesday 20th September 2017
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This morning I pulled up outside a customer's house in the work truck and was sitting quietly drinking coffee while my boss went to pick up some equipment. All of a sudden for no reason the alarm on the lady's 12 plate Mini started going off, and almost instantaneously the car rolled off down the drive and crashed into the garage wall! It was in neutral with the handbrake on, not an electric handbrake either as far as I could tell so seemingly no reason why it would disengage when the alarm goes off? Amazingly the car only suffered minor scuffs, while the whole wall cracked and bowed in which will require the whole front of the garage to be rebuilt. Has anyone heard of anything like this before?

s m

23,219 posts

203 months

Wednesday 20th September 2017
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hucumber said:
This morning I pulled up outside a customer's house in the work truck and was sitting quietly drinking coffee while my boss went to pick up some equipment. All of a sudden for no reason the alarm on the lady's 12 plate Mini started going off, and almost instantaneously the car rolled off down the drive and crashed into the garage wall! It was in neutral with the handbrake on, not an electric handbrake either as far as I could tell so seemingly no reason why it would disengage when the alarm goes off? Amazingly the car only suffered minor scuffs, while the whole wall cracked and bowed in which will require the whole front of the garage to be rebuilt. Has anyone heard of anything like this before?
Hot brakes cooling off?

Pica-Pica

13,751 posts

84 months

Wednesday 20th September 2017
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Does it have drum-in-hat discs? That is rear disc brakes, with an integral drum brake operated by parking brake shoes? (I will always, but ALWAYS leave a manual car in gear).

Toltec

7,159 posts

223 months

Wednesday 20th September 2017
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s m said:
Hot brakes cooling off?
Sounds reasonable, brake applied just hard enough to hold and the alarm goes off when it senses movement.

anonymous-user

Original Poster:

54 months

Wednesday 20th September 2017
quotequote all
I hadn't thought of that, certainly sounds possible! She did say she put it on as hard as she could as it was her husband's and she didn't want it to roll down the hill and hit the garage...

Toltec

7,159 posts

223 months

Wednesday 20th September 2017
quotequote all
I had a house with a steep drive once, applied the brake, wouldn't hold, tried a bit harder, still wouldn't hold, tried again and snapped a cable.

Quickly learnt how to do a heel and toe hillstart.

Sometimes pulling the handbrake as hard as you can still won't work.

Mr Tidy

22,259 posts

127 months

Wednesday 20th September 2017
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Pica-Pica said:
Does it have drum-in-hat discs? That is rear disc brakes, with an integral drum brake operated by parking brake shoes? (I will always, but ALWAYS leave a manual car in gear).
I don't know, but all my BMWs have had that set-up so it's quite likely (most of them haven't been very effective either).

freddytin

1,184 posts

227 months

Wednesday 20th September 2017
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I think it is a well-known issue.

My Uncles car was severely damaged by a runaway mini in a car park. Can't be certain but it might have been associated with keeping the pedal depressed whilst applying the handbrake...thus requiring an extra tug once the foot is removed.

Pica-Pica

13,751 posts

84 months

Wednesday 20th September 2017
quotequote all
Mr Tidy said:
Pica-Pica said:
Does it have drum-in-hat discs? That is rear disc brakes, with an integral drum brake operated by parking brake shoes? (I will always, but ALWAYS leave a manual car in gear).
I don't know, but all my BMWs have had that set-up so it's quite likely (most of them haven't been very effective either).
Indeed, my BMWs too, and Volvo. Mine have been effective to the standard required. As said, always left in gear, wheels turned to kerb (or at least to direct car into a safe stop point).

Toltec

7,159 posts

223 months

Wednesday 20th September 2017
quotequote all
Pica-Pica said:
Does it have drum-in-hat discs? That is rear disc brakes, with an integral drum brake operated by parking brake shoes? (I will always, but ALWAYS leave a manual car in gear).
I know at least some have the disc based handbrakes as I have a set of the rear calipers on one kit car.



TonyG2003

257 posts

92 months

Wednesday 20th September 2017
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I was riding the bike a couple of years and all of a sudden a mini rolled into the road just in front of me. It was pretty close and I was even more surprised not to see a driver in it. I figured it was from the house across the road so I went up the driveway and knocked on the door. Dressed as full MAMIL I was probably quite a shock and the lady who answered was pretty damn rude "why are you knocking on my door etc" until I pointed at the mini in the road.

dazwalsh

6,095 posts

141 months

Wednesday 20th September 2017
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This happened to my ford focus, g
Hand brake on, got out, locked it and went inside. 5 minutes later I hear a "Woahhhhhhhhhhh fking hell" outside and as I get up and look out the window I'm just in time to see my car roll off the end of my drive, pick up some serious speed and plough into a pristine mitsubishi GTO.


RicksAlfas

13,387 posts

244 months

Wednesday 20th September 2017
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Every time we have a thread like this, I can't understand why people don't park in gear.
confused
Sorry to hear about the OP. Rear disk brakes cooling off is a common occurrence. I've known two VWs and a Vauxhall roll because of it.

Mr2Mike

20,143 posts

255 months

Wednesday 20th September 2017
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RicksAlfas said:
Every time we have a thread like this, I can't understand why people don't park in gear.
confused
Bizarre isn't it? Takes literally fractions of a second to do.

Who me ?

7,455 posts

212 months

Wednesday 20th September 2017
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Vauxhall handbrake was a favourite in wet weather to have the rear shoes glue to drums, so perhaps it was something similar and frost helped.
Olde tip- BEFORE applying handbrake- apply footbrake with engine running- gets rear shoes hard on drum,so less force needed on handbrake.
NOT something taught by driving school production line.

donkmeister

8,131 posts

100 months

Wednesday 20th September 2017
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RicksAlfas said:
Every time we have a thread like this, I can't understand why people don't park in gear.
confused
I think most drivers have a "force of habit" and always do things the same way rather than assessing each situation.
Some on here state they *always* park with wheels straightened, which is of course incorrect on a slope. Some never use their parking brake (must live in Norfolk), others always use it (me included).
Parking in gear is preferable on a slope, but not advisable on the flat (some of us say the clutch must be depressed before starting a manual, some say otherwise). If your parked car gets rear-ended in gear whilst parked, you may have transmission damage. If you do it in Paris you might get "touch-parked" 6 feet in gear.
So, don't *always* park in gear, simply keep it in your repertoire of driving tools.

emicen

8,578 posts

218 months

Wednesday 20th September 2017
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No MINIs have drum style handbrakes, they all have the cable actuate the rear callipers.

Pica-Pica

13,751 posts

84 months

Wednesday 20th September 2017
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No one has really answered my question if this is a drum-in-hat set-up. That is separate parking brake shoes, and service (foot) brake is fluid operated calipers.

Who me ?

7,455 posts

212 months

Wednesday 20th September 2017
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Same difference- foot on pedal with engine running- then pull handbrake makes certain that PADS are in good contact with discs before handbrake is applied.

emicen

8,578 posts

218 months

Thursday 21st September 2017
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Pica-Pica said:
No one has really answered my question if this is a drum-in-hat set-up. That is separate parking brake shoes, and service (foot) brake is fluid operated calipers.
Except I did in the post immediately before that one.

They are NOT drum-in-hat, the handbrake cable actuates the rear pads, there are no separate shoes.