Rolling Road Day @ Surrey Rolling Road, Sat 5th October

[edc]

TheBob said:

I'll join if there is still space?

Planet 9 link to the Dyno results posted by OldBob by the way:

http://www.planet-9.com/987-cayman-boxster-modific...

Login to see pictures.

Please PM me your reg, which car you are bringing and your email address. Please also let me know if you (plus guests) want to join the lunch party. There are about 12 for lunch so far. I'll tag you on to the end for circa 1.30pm.

[edc]

I have similar mods but much cheaper versions and realised similar gains to you, albeit it on a 986.

http://www.pistonheads.com/gassing/topic.asp?h=0&a...

[supermono]

Is there a place for my GT2? And is it suitable? Last place I went it was trying to crawl out of the rollers!

SM

[edc]

supermono said:

Is there a place for my GT2? And is it suitable? Last place I went it was trying to crawl out of the rollers!

SM

There is space for more cars but Charlie won't run 911 turbos as there is insufficient cooling so I suspect the same for GT2.

[itsybitsy]

are the figures wheel hp/bhp?

[edc]

Those figures will be estimated flywheel figure.

[TheBob]

edc said:

Please PM me your reg, which car you are bringing and your email address. Please also let me know if you (plus guests) want to join the lunch party. There are about 12 for lunch so far. I'll tag you on to the end for circa 1.30pm.

Apparently i'm being dim this morning and can't find the PM button; perhaps because i'm a new member?:

Reg: F5RTW
Car: Cayman R
Lunch Party: Yes
Guests: 1
E-mail: I'll update when I have access to PM

Cheers,

Bob

[OldBob]

edc said:

Those figures will be estimated flywheel figure.

indeed

[itsybitsy]

OldBob said:

edc said:

Those figures will be estimated flywheel figure.

indeed

I thought a rolling road gave you rwhp ?how does it work quessing the crank hp?
sorry for the I am little dum questions but there is a site that I will dig the name out of a rolling road somewhere in Sweden or such likes that tests manufactures claimed hp and its always gives rwhp ,and what you tend to see is 5-10% less hp at the rear wheels for manual boxes and about 15% for autos

[itsybitsy]

http://www.rototest.com/rototest-dynamometer.php
check this out

click on the enthusiast section and then graphs

Edited by itsybitsy on Sunday 8th September 12:47

[itsybitsy]

here are the figures for the 996 gt3

Porsche 911 GT3 -99 Powertrain Performance Graph (Dyno Graph, Dyno Run, Dyno Chart)



Performance

Powertrain performance
Wheel power 243 (330 / 326)
kW (PS / bhp)
at 1/min 7199
Total wheel torque / total reduction 348 (256)
Nm (lb-ft)
at 1/min 5009


Stated engine performance
Engine power 265 (360 / 355)
kW (PS / bhp)
at 1/min 7200
Engine torque 370 (273)
Nm (lb-ft)
at 1/min 5000










0.92
Power rate





0.94
Torque rate




Powertrain Performance Graph (Dyno Graph, Dyno Run, Dyno Chart)

[OldBob]

itsybitsy said:

I thought a rolling road gave you rwhp ?how does it work quessing the crank hp?
sorry for the I am little dum questions but there is a site that I will dig the name out of a rolling road somewhere in Sweden or such likes that tests manufactures claimed hp and its always gives rwhp ,and what you tend to see is 5-10% less hp at the rear wheels for manual boxes and about 15% for autos

I have to say on reflection itsy that I actually don't know what the charts are actually representing ie @wheels or crank. I know they can measure both (from their web literature). Worth clarifying I guess for repeat runs if nothing else although as I've said before it is the relative differences rather than absolute numbers I was interested in really. If someone knows for sure what Charlie routinely prints out then great, else I'll ask him tomorrow
Cheers

Edited by OldBob on Sunday 8th September 16:32

[Vixpy1]

He's already here

1) We provide a wheels graph(the lower number graph) and a flywheel graph(estimate)

2) The rototest do not measure power at the wheels, they measure power at the hubs, no tyres = less loss

3) My dinner is burning.

[OldBob]

Vixpy1 said:

He's already here

1) We provide a wheels graph(the lower number graph) and a flywheel graph(estimate)

2) The rototest do not measure power at the wheels, they measure power at the hubs, no tyres = less loss

3) My dinner is burning.

Oh hi Charlie! and the readings I've posted are?... I don't remember seeing anything but those I've posted so I can't quote any other numbers, hope you had a nice dinner ;-)

[edc]

Bob - I have pm'd you. You just need to click the username then click the email me link.

Here is the latest running list with 15 cars. There are 14 for lunch so far.

10:00 Ed 986S
10:15 Stuart 3.2 Carrera
10:30 Rich 993 Targa
10:45 Mark 981 S
11:00 David 981 2.7
11:15 Ian 550 Spyder
11:30 Rich 89 911 Cab
11:45 Dean RS60
12:00 Geoff 996 GT3
12:15 Al 986S
12:30 Kul 997.1 GT3
12:45 Paul 996 C2 cab
13:00 Toby 997.2 C4S
13:15 Tristan 997 C2S X51
13:30 Bob Cayman R

[BIRMA]

edc said:

Bob - I have pm'd you. You just need to click the username then click the email me link.

Here is the latest running list with 15 cars. There are 14 for lunch so far.

10:00 Ed 986S
10:15 Stuart 3.2 Carrera
10:30 Rich 993 Targa
10:45 Mark 981 S
11:00 David 981 2.7
11:15 Ian 550 Spyder
11:30 Rich 89 911 Cab
11:45 Dean RS60
12:00 Geoff 996 GT3
12:15 Al 986S
12:30 Kul 997.1 GT3
12:45 Paul 996 C2 cab
13:00 Toby 997.2 C4S
13:15 Tristan 997 C2S X51
13:30 Bob Cayman R

I'll phone the pub and up the numbers then Ed

[Fire_2]

I shall pop up for a peek also

[itsybitsy]

the mods done on the caymanR are pretty similar to these guys and they also ran about 350bhp not sure if that's crank or rwbhp?
http://www.backdraftmotorsport.com/bdm-boxster-spy...

[charge]

edc said:

There is space for more cars but Charlie won't run 911 turbos as there is insufficient cooling so I suspect the same for GT2.

Don't fret Supermono, I got bumped out too.
I recon no one wants turbo power to wee wee on the party?

[edc]

Feel free to put your name down to spectate and/or join for lunch. No turbos due to insufficient cooling. I don't think anyone is afraid of the power. I've been a few times to SRR and there has always been some other tuned car to show up most 911 Turbo variants tuned or not!