Front splitter pics?

Front splitter pics?

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Discussion

T_Pot

Original Poster:

2,542 posts

196 months

Sunday 13th April 2008
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Has anyone fitted an after market or modified front splitter?
I think it would help with the higher speed front end stability, but unsure about the looks

stefan1200

98 posts

236 months

Sunday 13th April 2008
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Several older threads about the splitter, some with original pics, one posting even provided the dimensions.

My car came without splitter, so I had one fitted a few weeks ago mainly because I don't want the bonnet to pop open on the autobahn. I'm happy that it did the trick, bonnet stays shut with no movement at all up to 160 mph. Car "feels" a bit more stable too. According to the bible the splitter is also meant to improve the airflow through the rad, resulting in a 5 deg drop of coolant temp. While this might be true in hot weather, I didn't notice any change at present outside temps.

Stefan

T_Pot

Original Poster:

2,542 posts

196 months

Sunday 13th April 2008
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do you have pics of yours ?

did you do the drain pipe one? im not too fussed on that idea, but willing to be proved wrong

stefan1200

98 posts

236 months

Sunday 13th April 2008
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I did mine exactly as described in this thread:



tvr keith said:
Right, here is a pic, I hope!
http://ph.uncle-dave.co.uk/upload/images/2007_0223...

The spoiler is 3" wide of which 2" is the angled down bit, the other 1" is the bit fixed to the bottom of the body. The gap between the body and the front (lowest point) of the spoiler is 3/4" I didn't measure the length of it but a look at the photo should enable anyone to figure this out

PS I have no idea why the pic is tinted blue



Edited by tvr keith on Friday 23 February 15:05

V8 Animal

5,914 posts

209 months

Sunday 13th April 2008
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If i was going to fit one i would have fitted one opposite to the pictureconfused

stefan1200

98 posts

236 months

Sunday 13th April 2008
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V8 Animal said:
If i was going to fit one i would have fitted one opposite to the pictureconfused
Actually there was some debate about that some time ago, owners reported the splitter fitted facing the opposite direction, which might help in reducing the risk of damage from obstacles. The standard arrangement, however, seems to be the one shown in the picture.

Markh

2,781 posts

274 months

Sunday 13th April 2008
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T_Pot said:
Has anyone fitted an after market or modified front splitter?
I think it would help with the higher speed front end stability, but unsure about the looks
Thought this looked cool

V8 Animal

5,914 posts

209 months

Sunday 13th April 2008
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By fitting it opposite to picture it would still force air underneath the car and less likely to be ripped off.

AlexanderV8

1,468 posts

202 months

Sunday 13th April 2008
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stefan1200 said:
V8 Animal said:
If i was going to fit one i would have fitted one opposite to the pictureconfused
Actually there was some debate about that some time ago, owners reported the splitter fitted facing the opposite direction, which might help in reducing the risk of damage from obstacles. The standard arrangement, however, seems to be the one shown in the picture.
As I understand it, the picture is correct. You want to limit the airflow under the car to minimize any lift which would make the steering light & twitchy at speed. Deeper may be better but for a road (as opposed to track) car, would be too susceptible to damage.

stefan1200

98 posts

236 months

Sunday 13th April 2008
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TVR Moneypit said:
V8 Animal said:
If i was going to fit one i would have fitted one opposite to the pictureconfused
To help push the air under the car I'm guessing?

I'm no expert on aerodynamics, so don't know which way around would work best?
Should more or less work in both directions, plastic front splitters used on some older cars were almost vertical or only slightly pointing forward.

My understanding is that it creates an area of lower pressure behind the splitter which directs the airflow coming through the rad down to the underside of the car, thus preventing pressure buildup under the bonnet. Works perfectly on my car, others haven't seen any change with or without splitter so left them off.

tvrbob

11,171 posts

254 months

Sunday 13th April 2008
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TVR Moneypit said:
V8 Animal said:
If i was going to fit one i would have fitted one opposite to the pictureconfused
To help push the air under the car I'm guessing?

I'm no expert on aerodynamics, so don't know which way around would work best?
The splitter reduces the amount of air getting under the car and thereby reduces lift. The slope under the front number plate causes air to pressurise when driving at speed. That air gets under the car and creates lift. The splitter interrupts this flow of air and pushes it to the sides of the car and therefore reduces under car air pressure.

T_Pot

Original Poster:

2,542 posts

196 months

Sunday 13th April 2008
quotequote all
Markh said:
T_Pot said:
Has anyone fitted an after market or modified front splitter?
I think it would help with the higher speed front end stability, but unsure about the looks
Thought this looked cool
that looks great, what is the splitter off mate ?

tvrbob

11,171 posts

254 months

Sunday 13th April 2008
quotequote all
T_Pot said:
Markh said:
T_Pot said:
Has anyone fitted an after market or modified front splitter?
I think it would help with the higher speed front end stability, but unsure about the looks
Thought this looked cool
that looks great, what is the splitter off mate ?
Maxpower meets TVR. IMO it look awful, completely destroys the aesthetics of the car

GTvr

173 posts

237 months

Sunday 13th April 2008
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http://www.sc-power.co.uk/SC%20Power%20Aerodynamic...

These produce a front & rear splitter for the griff - if thats your sort of thing, I imagine it will fit on to a chim.

Chimjunkie

2,879 posts

210 months

Sunday 13th April 2008
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Race track only IMO. Really spoils the design of the car.

Ubernoober

534 posts

209 months

Monday 14th April 2008
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Where are the headlamp pods from?

Look like a useful alternative in providing decent lighting whilst also allowing a return to the original if needs be.

Cider Andy

1,889 posts

224 months

Monday 14th April 2008
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Ubernoober said:
Where are the headlamp pods from?

Look like a useful alternative in providing decent lighting whilst also allowing a return to the original if needs be.
Similar ones for sale on eBay here.

nikman

878 posts

204 months

Monday 14th April 2008
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tvrbob said:
TVR Moneypit said:
V8 Animal said:
If i was going to fit one i would have fitted one opposite to the pictureconfused
To help push the air under the car I'm guessing?

I'm no expert on aerodynamics, so don't know which way around would work best?
The splitter reduces the amount of air getting under the car and thereby reduces lift. The slope under the front number plate causes air to pressurise when driving at speed. That air gets under the car and creates lift. The splitter interrupts this flow of air and pushes it to the sides of the car and therefore reduces under car air pressure.
No, the splitter (as in the embedded picture - mounted behind the front valance) doesn't REDUCE the amount of air getting under the car. If there's any lift at speed this is due to the aerodynamic shape of the front of the car - most of it generated just behind and above the froward edge of the bonnet, perhaps just a little from the air being buffeted as it passes underneath the nose of the car.

The splitter creates a low pressure area under the car, down into which the car is 'sucked'. This also assists cooling. A hard concept to convey sometimes. It helps if you can imagine the smooth flowing air passing under the car suddenly getting 'stretched' as it encounters the splitter. And as the air gets stretched (and consequently 'thinner' or less dense) a vacum is created which looks for more air to suck into itself. It finds it in the air belting out of the bottom of engine compartment and obviously as that air is now sucked out of the bottom of the car of course this in turn 'sucks' more fresh air in through the front (or 'allows' more in).

Contrary to what's been suggested, it matters HUGELY which way round the splitter is mounted! eek Mount it the other way round with the edge trailing in the airflow rather than cutting into it, and it will perform a remarkable imitation of an aircraft flap trailing behind the wing with a similar angle. Great for generating extra LIFT at take-off!! yikes

Phew - who was it that asked for a physics lesson this afternoon. biggrin:

If anyone's stil reading this far down you must be interested so there's more splitter stuff here http://www.pistonheads.co.uk/gassing/topic.asp?h=0...

Nick.

Edited by nikman on Monday 14th April 16:15

tvrbob

11,171 posts

254 months

Tuesday 15th April 2008
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nikman said:
tvrbob said:
The splitter reduces the amount of air getting under the car and thereby reduces lift. The slope under the front number plate causes air to pressurise when driving at speed. That air gets under the car and creates lift. The splitter interrupts this flow of air and pushes it to the sides of the car and therefore reduces under car air pressure.
No, the splitter doesn't REDUCE the amount of air getting under the car.
OK I was being simplistic but actually it does prevent the air from getting under the car. It creates a pressure boundary that moves with the car. That pressure boundary deflects the air and spills it out of the sides of the car. This stops air from getting under the car from the front. That action combined with suction generated by the eddy at the rear of the car causes a reduction in air mass under the car. Thus the air pressure difference between the top and the bottom of the car is increased. This pushes the car downwards.

Edited by tvrbob on Tuesday 15th April 16:10

Uncle Fester

3,114 posts

207 months

Tuesday 15th April 2008
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Has anyone ever managed to get film of a Griff in a wind tunnel?

Does anyone have access to one?

Some people with standard cars report a light front end at speed, others don't. Why?