1145 replies to this topic

[CHILL Gone DUTCH]

RSRs are a brilliant tire, really liked the front end especially

[Graeme Lambert]

RSRs are a brilliant tire, really liked the front end especially

 

Good stuff. Assuming and hoping I have no size issues (ABS etc) then I think they look to be a steal at £365 for all four.

 

G

[JG]

Here you go, 

I'll do all the work for you shall i?

 

http://www.racepads....alogue_2014.pdf

 

2 pot Pad ref: 2593

 

4 pot (BBK) Pad ref: 4349

 

Rears Pad ref: 1682

 

best i can find them for is for a full set of 4 pot (BBK) fronts and standard rears:

 

RS14 compound: £324.79 inc VAT

 

RS42 compound: £294.16 inc VAT

 

Probably a bit of postage on that. Thats around 5% saving on Elise parts.   

[Graeme Lambert]

Today's package arrived: new in primer Turbo ear.

 

[Winstar]

RS19's front, RS14's rear on mine and I couldn't want for better braking. The distribution and bite is fantastic and having an endurance pad up front with an aggressive on rear means you need little time to make work.

looking at the friction graph that's will be similar to the RS42 front and RS14 rear I've run for years.
 

Today's package arrived: new in primer Turbo ear.
 

please don't ruin yet another NA with those stupid sticky out ears, especially if you're under the illusion that it will aid cooling

Edited by Winstar, 30 January 2014 - 05:13 PM.

[Graeme Lambert]

 

RS19's front, RS14's rear on mine and I couldn't want for better braking. The distribution and bite is fantastic and having an endurance pad up front with an aggressive on rear means you need little time to make work.

looking at the friction graph that's will be similar to the RS42 front and RS14 rear I've run for years.
 

Today's package arrived: new in primer Turbo ear.
 

please don't ruin yet another NA with those stupid sticky out ears, especially if you're under the illusion that it will aid cooling

 

 

Aha,

Just the man I wanted to see here.

 

Definitely interested in hearing how is best to cool this thing.

 

First off I'm afraid this NA will be ruined by the VXT ears, as it already has some. Since the cutting has already been done, it would probably be harder not to fit them to the new one.

 

I was going to use one to feed some air into the airfilter?

 

But back to the cooling; this car is going to have a Coupe conversion ala Cliffie, Lee etc with the roof scoop. Rumour has it, that on the Exige certainly, the roofscoop collects warm dirty air from the front of the car and if it was to take clean air it would have to project out another 6-12inches from the windscreen top. That right? I was going to use the roof scoop to force more air into the engine bay in a bid to help cool it.

 

Also, one thing I'm generally not keen on is the cut outs everyone does at the rear of the car - i'd rather keep my rear clam intact in that way.

 

I think I read that the NACA ducts in the undertray do quite well at helping with the cooling. Is there any reason to fit a few more in the undertray for this. And what is the best way to get the heat out of the bay? Can I get away without cutting the rear of my VX up?

 

And finally, I also thought I heard that fitting the coupe rear but without adding a proper rear wing can induce lift. Is this true? I had planned to fit the coupe rear but with a simple Turbo spoiler (for looks not for aero) but wondering what your thoughts are on it all?

 

Cheers,

G
 

[techieboy]

Fit an extra NACA duct and don't bother with the god awful roof intake. Especially not an extended one (unless you're planning on endurance racing). Worked a treat on mine at dropping temps and your coupe back should have more than enough capacity to vent that extra air without any more hackery. 

[Graeme Lambert]

Fit an extra NACA duct and don't bother with the god awful roof intake. Especially not an extended one (unless you're planning on endurance racing). Worked a treat on mine at dropping temps and your coupe back should have more than enough capacity to vent that extra air without any more hackery. 

 

I'd like to at least make some use of the roof intake though Matt, not a fan of having stuff purely for looks if it does nothing (I've got my fingers in my ears about the turbo spoiler). Good news that the NACA duct helped on yours. Question is do I fit one or two extra, and is there anywhere in particular that is optimum?

 

Oh and don't worry about the extended roof scoop option, it looks sh*t, almost as bad as the noses on current F1 cars. It's just something MB and I had discussed when I mooted using the roofscoop for an intake for the air filter.

 

G

Edited by Graeme Lambert, 30 January 2014 - 05:48 PM.

[Zoobeef]

You could try sticking random NACA ducts all over like the F40 One of mine tried to escape at Brands so is now a little shorter after scrapig along the floor!

[Graeme Lambert]

You could try sticking random NACA ducts all over like the F40 One of mine tried to escape at Brands so is now a little shorter after scrapig along the floor!

 

I did consider, and have seen, mounting a couple on the bodywork somewhere but not sure. Might consider cutting some into the coupe panel somewhere?

 

G  

[mbes2]

Mount 2 of these to the roof...

 

http://www.ebay.co.u...=item3f11292746

 

[Winstar]

RS19's front, RS14's rear on mine and I couldn't want for better braking. The distribution and bite is fantastic and having an endurance pad up front with an aggressive on rear means you need little time to make work.

looking at the friction graph that's will be similar to the RS42 front and RS14 rear I've run for years.
 

Today's package arrived: new in primer Turbo ear.
 

please don't ruin yet another NA with those stupid sticky out ears, especially if you're under the illusion that it will aid cooling

 
Aha,
Just the man I wanted to see here.
 
Definitely interested in hearing how is best to cool this thing.
 
First off I'm afraid this NA will be ruined by the VXT ears, as it already has some. Since the cutting has already been done, it would probably be harder not to fit them to the new one.
 
I was going to use one to feed some air into the airfilter?
 
But back to the cooling; this car is going to have a Coupe conversion ala Cliffie, Lee etc with the roof scoop. Rumour has it, that on the Exige certainly, the roofscoop collects warm dirty air from the front of the car and if it was to take clean air it would have to project out another 6-12inches from the windscreen top. That right? I was going to use the roof scoop to force more air into the engine bay in a bid to help cool it.
 
Also, one thing I'm generally not keen on is the cut outs everyone does at the rear of the car - i'd rather keep my rear clam intact in that way.
 
I think I read that the NACA ducts in the undertray do quite well at helping with the cooling. Is there any reason to fit a few more in the undertray for this. And what is the best way to get the heat out of the bay? Can I get away without cutting the rear of my VX up?
 
And finally, I also thought I heard that fitting the coupe rear but without adding a proper rear wing can induce lift. Is this true? I had planned to fit the coupe rear but with a simple Turbo spoiler (for looks not for aero) but wondering what your thoughts are on it all?
 
Cheers,
G

If it's been ruined any way then go on.

Fitting the coupe back complicates things as you can see from below the main flow route is to come in from the ears and NACA ducts then out through the engine cover vents. With the NACA ducts providing the flow in the regions it needs it most on the NA with the exhaust a the back of the engine. The problem with the coupe roof is that if you use the front scoop this is going to add significant flow which will block flow from the NACA ducts and the ears. The only way to get around this is to cut the rear clam so the main exit route is from there.

With ears
Ear flow rate - 0.66 kg/s

NACA flow rate - 0.12 kg/s

Without ears
Ear flow rate - 0.15 kg/s

NACA flow rate - 0.15 kg/s

As for the hot air I've just quickly run the model with hot air coming out of the rad vent as because the VX has the strip in the middle of the outlet, which the exige/Europa don't, then although there is a bit of hot air caught in the boundary layer there is a strip of clean/cool air down the centre of the car with the thermal plumes pushed over the sides of the windscreen.

[Graeme Lambert]

So long and short of it, if I want to use the roofscoop and ears I need to get the air out of the back of the car somehow? And to do that I need to cut the rear clam and let it all exit from there?

 

G

[fezzasus]

So long and short of it, if I want to use the roofscoop and ears I need to get the air out of the back of the car somehow? And to do that I need to cut the rear clam and let it all exit from there?

 

G

 

Unless you space the diffuser, just a thought.

[Graeme Lambert]

 

So long and short of it, if I want to use the roofscoop and ears I need to get the air out of the back of the car somehow? And to do that I need to cut the rear clam and let it all exit from there?

 

G

 

Unless you space the diffuser, just a thought.

 

 

Would spacing the diffuser be enough though Tom?

 

Especially as it's a TAT short round, which probably won't look right if too low?

 

G  

[fezzasus]

 

 

So long and short of it, if I want to use the roofscoop and ears I need to get the air out of the back of the car somehow? And to do that I need to cut the rear clam and let it all exit from there?

 

G

 

Unless you space the diffuser, just a thought.

 

 

Would spacing the diffuser be enough though Tom?

 

Especially as it's a TAT short round, which probably won't look right if too low?

 

G  

 

 

I think James has some photos of his spaced by about an inch. I don't think you need massive amounts of rear venting as the area of low pressure behind the car will help pull air through any vent there. I don't know if the boot lets you make the vent under the number plate any bigger, might be worth looking at too.

 

EDIt: http://www.vx220.org...e-tat-diffuser/

Edited by fezzasus, 01 February 2014 - 05:47 PM.

[CHILL Gone DUTCH]

Will this not just take air from naca ducts before it's cooled anything? I'm no expert it's just a question Where is winstar when you need him

[Graeme Lambert]

 

 

So long and short of it, if I want to use the roofscoop and ears I need to get the air out of the back of the car somehow? And to do that I need to cut the rear clam and let it all exit from there?   G

  Unless you space the diffuser, just a thought.  

  Would spacing the diffuser be enough though Tom?   Especially as it's a TAT short round, which probably won't look right if too low?   G    

  I think James has some photos of his spaced by about an inch. I don't think you need massive amounts of rear venting as the area of low pressure behind the car will help pull air through any vent there. I don't know if the boot lets you make the vent under the number plate any bigger, might be worth looking at too.   EDIt: http://www.vx220.org...e-tat-diffuser/

Happy to space it a little. If that helps then perfect. To be honest I'm hoping that I can achieve my power goal with less boost than normal due to what we are doing to the base engine (head, cams etc) so might have lower temps to deal with anyway. Could be a pipedream though?

[Graeme Lambert]

Will this not just take air from naca ducts before it's cooled anything? I'm no expert it's just a question Where is winstar when you need him

Hopefully he'll be back along in a minute then! G

[Dave E]

Can't remember the thread but sure winstar said spacing the diffuser is actually counter productive to cooling. I'll try and find it.