Saab Tech Talk (STT)

Workshop for classic Saab models => Classic Saab 9-5 (MY 1998-2010) => Topic started by: Mr Linear on 15 January 2013, 11:46:06 PM

Title: Aero Top Speed
Post by: Mr Linear on 15 January 2013, 11:46:06 PM
Is the Aero electronically limited?

If not, what is the top speed?

Mr L    ???
Title: Re: Aero Top Speed
Post by: wrighar on 16 January 2013, 12:27:01 AM
Yes, electronic limited to 155mph.
Title: Re: Aero Top Speed
Post by: Steve440 on 16 January 2013, 07:39:22 AM
The speedo will show you are going faster than that , mine was showing over 160mph. The Satnav showed it was a genuine 155mph though.

The turbo boost drops off at the max speed. I did it in mine down a hill on a German Autobahn, it felt like it could keep going but the boost keeps dropping off.

It was very stable it just smelt hot afterwards.

I had my 9000 Aero on a rolling road once, that went to 164mph before it reached the rev limiter. Standard car and 25bhp less so I am sure a 9-5 could easily match it.

Steve
Title: Re: Aero Top Speed
Post by: phoenix on 16 January 2013, 08:30:54 AM
Quote from: Steve440 on 16 January 2013, 07:39:22 AM
The speedo will show you are going faster than that , mine was showing over 160mph. The Satnav showed it was a genuine 155mph though.

The turbo boost drops off at the max speed. I did it in mine down a hill on a German Autobahn, it felt like it could keep going but the boost keeps dropping off.

It was very stable it just smelt hot afterwards.

I had my 9000 Aero on a rolling road once, that went to 164mph before it reached the rev limiter. Standard car and 25bhp less so I am sure a 9-5 could easily match it.

Steve

A rolling road doesn't offer the same resistance as driving a car on the road- much less in fact. And the engine's peak power is lower than max revs

A manual 9-5 Aero has a speed of 26.7mph/1000rpm. 155mph would therefore be 5800rpm. The Aero engine's peak output power is ~5300rpm and drops thereafter.

It's difficult to calculate the HP for the top speed as although the Cd is known (0.29), the frontal area is a guess. Using online calculators I've estimated the power required to do 155mph to be just over 200hp. Top speed (at 6000rpm) would probably be a smidge over 160mph.
Title: Re: Aero Top Speed
Post by: sgould on 16 January 2013, 09:11:48 AM
My Hirsched Aero is supposed to do 160 mph.  I haven't got much over 140 mph on the autobahn because something has got in the way.  SWMBO has got to 148 mph.  That was when the speed warning pinged at her.  I'd reset the speed warning to "something high" while sitting in the car in the Channel Tunnel.
Title: Re: Aero Top Speed
Post by: Norfolk Jim on 06 April 2006, 01:22:37 PM
I had my Abbott aero 9-5 up to 156 on autobahn and it felt like it would go further but like Will things kept getting in the way.
Title: Re: Aero Top Speed
Post by: nine-fiver on 21 January 2013, 08:21:22 AM
Heck...my speed warning goes off at 128.
Km/h.....
You guys get to do 200+?
You are very privileged.

Envy does not describe it.
Title: Re: Aero Top Speed
Post by: Norfolk Jim on 21 January 2013, 09:34:55 AM
Adjust your speed warning....................................
Title: Re: Aero Top Speed
Post by: Geoff1951 on 21 January 2013, 10:50:31 AM
Quote from: Norfolk Jim on 21 January 2013, 09:34:55 AM
Adjust your speed warning....................................

I always rely on a blue light that appears in my mirror.


(Not really.)
Title: Re: Aero Top Speed
Post by: nine-fiver on 21 January 2013, 11:36:49 AM
The road from Alice Springs to Darwin had no speed limit on it, until recently. So now there are no roads in Aus where it is legal to go over 110km/h.

Mind you, hitting a 'roo in the outback at 100 writes-off the car in a big way, and will land you in a right mess. Particularly when it ends up in the car.
Title: Re: Aero Top Speed
Post by: collywobble on 21 January 2013, 02:28:13 PM
Quote from: nine-fiver on 21 January 2013, 11:36:49 AM
Mind you, hitting a 'roo in the outback at 100 writes-off the car in a big way, and will land you in a right mess. Particularly when it ends up in the car.

Must be very similar to having a red deer leap out on you on Exmoor! I had a roe deer commit suicide by running across the road in front of my Astra a couple of years ago. The girl at the insurance company when I phoned to make a claim said did I have details of the other party! Must just read the script!
Title: Re: Aero Top Speed
Post by: Geoff1951 on 21 January 2013, 03:07:58 PM
(https://lh4.googleusercontent.com/-wGMZ_ZQE0zM/UP1Yv2ijZzI/AAAAAAAAAcQ/CQ3GEZdZTQA/s512/122_2295.JPG)

You and me both, collywobble!This is what happened when I hit a stag at 60 mph one night in Warwickshire back in 2004. New wing, new bonnet, new bumper, new grille, new lamps, new trousers. The photo doesn't do it justice.
Title: Re: Aero Top Speed
Post by: Norfolk Jim on 22 January 2013, 08:45:33 AM
When I was at school on Sandringham estate one of our teachers was late in and when she arrived she was on foot???? This puzzled us 5th years so why?

Later we found she had hit a deer coming through the woods and that her car was stuck. The deer had bounced off the bonnet of her Vauxhall Viva and was wedged dead as a door post through her windscreen! Real mess and she was lucky it didn't have its full head of antlers...........................
Title: Re: Aero Top Speed
Post by: David on 22 January 2013, 12:10:33 PM
As we know SAABs are built to survive a Moose, which is much bigger than any deer. Though even a deer can leave a mess.

Please be warned, not for the squeamish

http://www.cartype.com/pages/324/oh_deer

Title: Re: Aero Top Speed
Post by: CitTone on 22 January 2013, 01:37:01 PM
On a motorbike, even a pigeon hurts.  Luckily the frame took a lot of the impact but it stung my knee something chronic and I was picking feathers out of the engine fins for weeks.

Had it been at head-height, I shudder to think....
Title: Re: Aero Top Speed
Post by: Steve440 on 22 January 2013, 01:58:31 PM
Quote from: CitTone on 22 January 2013, 01:37:01 PM
On a motorbike, even a pigeon hurts.  Luckily the frame took a lot of the impact but it stung my knee something chronic and I was picking feathers out of the engine fins for weeks.

I took one full on in the chest last summer, it winded me and I was lucky to stay on the bike, luckily the jacket I was wearing must have spread the load but I even had feathers in my helmet.

Makes you think.

Steve
Title: Re: Aero Top Speed
Post by: ScarbSaab on 22 January 2013, 02:13:25 PM
Quote from: CitTone on 22 January 2013, 01:37:01 PM
On a motorbike, even a pigeon hurts.  Luckily the frame took a lot of the impact but it stung my knee something chronic and I was picking feathers out of the engine fins for weeks.

Had it been at head-height, I shudder to think....

Even in a car, a head height pigeon is scary (though preferable to yours and Steve's incidents). Three direct strikes over the years: once on a headlight, once on radiator grill and once on windscreen. However, the last one did get the tailgater to drop back, I don't know if it was the cloud of feathers billowing around my car or the carcass flung over the roof at him...
Title: Re: Aero Top Speed
Post by: Geoff1951 on 22 January 2013, 02:45:19 PM
Blimey, that link posted by David was grim.
The deer I hit sailed over the roof after hitting the bonnet, my passenger looked up from the map he was reading to see it go over.

I knew a chap years ago who hit a horse head on. Down an unlit minor A road at night, it'd presumably escaped from a field and was just standing in a dip in the road. He was off work for six months. 
Title: Re: Aero Top Speed
Post by: dw on 22 January 2013, 06:48:35 PM
Local wisdom round here is that it is the second deer that you hit, the first one runs across the road then followed by another and sometimes even more. In one year I knew three people who had cars destroyed by deer running into them.
Title: Re: Aero Top Speed
Post by: Steve440 on 22 January 2013, 07:12:39 PM
I found this on You tube about deer crossing a road. You must have the sound on. Yes this is real

http://www.youtube-nocookie.com/embed/CI8UPHMzZm8?rel=0

Steve
Title: Re: Aero Top Speed
Post by: Geoff1951 on 22 January 2013, 08:46:56 PM
Quote from: Steve440 on 22 January 2013, 07:12:39 PM
I found this on You tube about deer crossing a road. You must have the sound on. Yes this is real

http://www.youtube-nocookie.com/embed/CI8UPHMzZm8?rel=0

Steve

Well, we can't all have an IQ in three figures.
Title: Re: Aero Top Speed
Post by: Mr Linear on 22 January 2013, 09:08:26 PM
I saw a small pony hit by a Honda Civic a few months ago.

The pony was  unfortuately killed as was the Civic.
Title: Re: Aero Top Speed
Post by: Audax on 23 January 2013, 01:53:07 AM
I know 1 person who was killed after hitting a deer on a main road in Norfolk, it came through the wind screen and killed him. Also another guy I know of was killed by hitting a pheasant when he was on a motorcycle, he hit the pheasant and as a result partially lost control while at the same time a car was pulling out of a side road and he didn't get an opportunity to drive around it.  :o
Title: Re: Aero Top Speed
Post by: Norfolk Jim on 23 January 2013, 08:58:03 AM
ScarbSaab - I would take the millet off your screen!

Long time back I stopped at scene of bazaar accident one evening near the wonderfully named Fosdyke to see if I could help as there appeared to be a motorbike in middle of the road. Plod and ambulance crew (one who I knew well) were looking around for the rider who was nowhere to be seen. We all spent about an hour looking and assume they must have come off and were not badly hurt but got a lift somewhere from passing car. There was evidence of a good skid mark on the road though.................

Next morning at first light the police had a call from passing motorist who had reported a grizzly sight - yep it was the rider and sadly he was dead. He was nearly at the top of the nearby telegraph pole impaled on the leg irons. From what they'd found police worked it out that they must have been travelling 100+ and had hit a hedgehog which had slowed bike with big jerk and sent him flying! The hedgehog was in the skid for about 30yds!

We were amazed Audax that our teacher was still ok with stag through her screen
Title: Re: Aero Top Speed
Post by: Norfolk Jim on 23 January 2013, 08:59:29 AM
Oh yeh and when they finish the dual carriageway between Thetford and Barton Mills it will be a scary road at night - right through middle of Thetford Forest!
Title: Re: Aero Top Speed
Post by: wrighar on 23 January 2013, 12:46:31 PM
Quote from: Norfolk Jim on 23 January 2013, 08:59:29 AM
Oh yeh and when they finish the dual carriageway between Thetford and Barton Mills it will be a scary road at night - right through middle of Thetford Forest!

Better an oncoming Stag than an oncoming Saxo  (I think....)
Title: Re: Aero Top Speed
Post by: CitTone on 23 January 2013, 01:27:02 PM
Depends upon the variety of Stag involved - four legs or eight cylinders.

Saxos fold up more easily than either.