I think Zeltner might have something to do, but probably it is early to say.Quote:
Originally Posted by AndyRAC
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I think Zeltner might have something to do, but probably it is early to say.Quote:
Originally Posted by AndyRAC
RGT Cup points?
No German R-GT cars ready. Only national allowed GT3s so forget about it.
And Zeltner will unfortunately defend his 2014 Championship instead of going abroad.
Delecour already getting a big rival for Ypres. Snijers will convert his 997 GT3 to FIA RGT rules for Ypres.
https://www.facebook.com/TACrally/ph...type=1&theater
Very nice! I hope the RGT Cup really becomes a championship for the top European GT rally drivers.Quote:
Originally Posted by mousti
Apparently Duez is the fans favourite - https://www.youtube.com/watch?v=OLNJiBHksAE
Seems that an Aston Martin drove last weekend at Arctic Rally?
According to Timothy Van Parijs (GT3 driver since 2006) it takes some 8000 euros just to get the paperwork sorted out with FIA, after that you can start "downgrading" your GT car according to FIA rules. Just like robbery... So it's very likely he won't drive in Ypres, same applies for Jochen Claerhout, they worked out a program together. If their cars are allowed in Rallye du Valais (they normally are, since there are no ERC rules), they will participate there in stead... :) There are quite some GT-cars in Belgium (997 GT3 of BMA, 997 GT3 of Viaene, 997 GT3 of Claerhout, 997 and 996 GT3 of Vanparijs, 997 GT3 of Snijers, 997 GT3 of Lejeune, 996 GT3 of Debyser, 996 GT3 of Schmelcher and the one Duez drove in Monte), but I'm afraid that except for Snijers it's likely we won't see any Belgian GT cars in Ypres...
Yep don't expect them either there, he already told me last year it's not worth the money to do that. Because it is indeed downgrading the car what means next BRC rally u need to change it all back. I prefer to see them in full spec with raw sound then we see them sometimes on the international scene. Btw there will come another 996 GT3 in the BRC with Robby Moers.
Yes, Kari Mäkelä has finished 2nd in his class with that car. The winner is Ilkka Manninen with Citroën Xsara 2 VTS 2.0L.Quote:
Originally Posted by mousti
Of course this is curious to be seen on a video.
That would be this one here: http://www.mat.fi/gallery/85 (go to picture #135 for the latest photos from the Arctic Rally).Quote:
Originally Posted by mousti
Here is an interesting article about the Aston Martin R-GT: http://blackflag.jalopnik.com/maniac...car-1681820324
Looks like they already obtained the FIA passport. So we will hopefully see it soon in a FIA rally. Otherwise it wouldn't make much sense to go through all the troubles to get a passport.
Porsche of Snijers in his new livery
https://scontent-b-ams.xx.fbcdn.net/...96304304_o.jpg
Snijers declared on our facebook page, that he is considering to do Deutschland Rally too.
Arctic Lapland Rally & Aston Martin V8 @2:56 - https://www.youtube.com/watch?v=RHYFteRGils
The sound is great. The corner not so much.
Have we seen this already: https://www.youtube.com/watch?v=UKsDHvLP-gw
Rallye Monte Carlo 2015 Best of Porsche pure sound(HD)
And it has a flappy paddle shift..
Has anyone tried to get a Cayman approved?
should think it is a bit more nimble than the 911, or it it too short?
We had a Cayman in some Belgian Rallies, some years ago. The 911 was faster and had better sound.
Properly built Cayman shall be faster than 911 for the reason that it has much better weight distribution.
Theoretically, yes. That said, I haven't heard of many racing series featuring Caymans/Boxsters, while private racing 911s are well documented and are very well supported by Porsche. It would therefore easier to acquire racing-specific parts for racing 911s than it would be for Caymans, no?Quote:
Originally Posted by Mirek
So logistically, I can see a "properly built Cayman" being more difficult to come by than a modified 911 GT3 Cup.
But you're definitely correct about the weight distribution, which is the reason why RUF uses a Cayman as the chassis basis for their top-of-the-line CTR 3 rather than the 911.
That's true what You say. I believe it's Porsche itself who keeps Cayman artificially "under" 911 level because of the almost legendary status of 911.
Some attempts with Porsche Cayman were also made in Italy, but it was before the new R-GT rules were introduced by the FIA.
Here's Aldo Calabrini and Carlo Verdelli on the stages of Rally di Como 2007:
http://www.megamodo.com/images/yokoh..._Calabrini.jpg
And here's Massimo Pigoli and Max Chiapponi on the stages of Trofeo ACI Como 2007:
http://www.alquati.it/F392.jpg
Like mousti mentioned it has been driving in Belgium (and small French events) as well.
Here a photo of a fast driver, Pascal Gaban. He did Rallye de Wallonie twice with it, in 2010 and 2011. Pitty there was no real competition for him when he was driving it, it was spectacular to see him with it on the stages. The car itself isn't that interesting IMO, like Mirek said they keep the Cayman below the 911 in terms of prestations. The "handicap" of the engine is too big for the car to be competitive, at least here in Belgium with fast stages that have many junctions followed by long straights... Also, if I remember correctly, the Cayman didn't have the wide rear tyres like the GT3 has, which was another disadvantage.
https://fbcdn-sphotos-d-a.akamaihd.n..._3591226_o.jpg
Photo of Pascal Gaban in 2010, drifting through a fast left corner on a gravel section. :)
That's a beauty. Pity the engine isn't that powerful.
Could an R-GT version be created using the upcoming Cayman GT4 as a base?
Yes, for sure.
I wonder if it would even make a difference for an R-GT? When the engine is less powerful, then the restrictor can be larger. Maybe it is even an advantage then, as the engine could work closer to its optimum?Quote:
Originally Posted by stefanvv
Good question. It can be interesting to see how all the pros and cons go against each other. Maybe somebody can have some erudite answer. Anyway don't forget that Cayman with smaller engine is definitely lighter than 911 and therefore would not be allowed same power.
I believe that even with smaller power the lighter and much better balanced Cayman shall be better if it is built from similar components. However I think that it's the problem. R-GTs are basically near stock-cars and while GT3 is a half-racing machine Cayman is not. Maybe the new GT4 will change it.
Interesting question indeed. I'm not that familiar in this part of the technics, but Your assumption seems reasonable. Always should be better the engine to work as close to it's manufactured parameters and not "choke" it with restrictor stuff, probably the engine would be more "healthy", it's servicing easier and cheaper. Just assumptions anyway.Quote:
Originally Posted by wildboar
Maybe the last year introduced 3436 cm3 340 hp Cayman would be suitable for R-GT. The min. weight for cars with cylinder volumes between 3100 cm3 to 4000 cm3 is 1200 kg and if the weight/power ratio is 3,4 kg/hp, the power at min weight would be 353 hp. The weight of the Cayman is 1345 kg. I don’t know if it’s possible to take off 145 kg to get down to the min weight but I think it’s possible to gain more power with mapping. And as wildboar said the Cayman would work closer to the revs what it’s designed for.
In the video that was posted earlier, Chris Harris says (at 5:35) that the Tuthill Porsche has 350 hp with a 39 mm restrictor (if my old ears heard it correctly).
Chris Harris driving the Tuthill 997 RGT, with a short interview with Richard Tuthill:
https://www.youtube.com/watch?v=V7afNZsAvqI
Cayman
http://www.porsche.com/international...turesandspecs/
or
2014 Porsche Cayman GTS
How long? 4404 mm
How heavy? 1345 kg
What size engine? 3.4 litre, 3436 cm3
How many cylinders? 6, Straight
How much power?
340 PS / 335 bhp / 250 kW @ 7400 rpm
How much torque?
380 Nm / 280 ft.lb / 38.8 kgm @ 4750-5800 rpm
http://www.carfolio.com/specificatio...ar/?car=365167
3,8 l & 4,0 l 997
2011 Porsche 911 GT3 RS 4.0 997
How long? 4460 mm
How heavy? 1435 kg
What size engine? 4 litre, 3996 cm3
How many cylinders? 6, flat
How much power?
500 PS / 493 bhp / 368 kW @ 8250 rpm
How much torque?
460 Nm / 339 ft.lb / 46.9 kgm @ 5750 rpm
http://www.carfolio.com/specificatio...ar/?car=241164
2010 Porsche 911 Carrera GTS Coupé 997
How long? 4435 mm
How heavy? 1420 kg
What size engine? 3.8 litre, 3800 cm3
How many cylinders? 6, Flat
How much power?
408 PS / 402 bhp / 300 kW @ 7300 rpm
How much torque?
420 Nm / 310 ft.lb / 42.8 kgm @ 4200-5600 rpm
http://www.carfolio.com/specificatio...ar/?car=220099
https://scontent-b-lhr.xx.fbcdn.net/...76208098_o.jpg
Had a look at Snijers GT3 today. It's fitted with a 3.6 Cup engine, and I'm not sure if those can drive in FIA RGT? Still some changes to be made before first event of the season, nothing big. Really looking forward to see this car in action, especially because it's driven by the best possible GT driver in Belgium... :)
Belgian GT and FIA RGT is two pair of shoes. You need at least work to the rollcage, the doors and the engine.
Rollcage is FIA homologated, doors are OK as well, for the engine we'll see... The car has never competed in Belgium yet and was built to German regulations.Quote:
Originally Posted by CWJ
I found this article about the Tuthill R-GT project.
http://www.exe-tc.co.uk/web/data/por...eng-nov-15.pdf
This article is from Racecar-engineering November 2014 issue.
Some highlights from the article.
“It weighted 1307 kg on the M-Sport’s scale before the rally (Germany), without driver and co-driver”
“The best weight/power ratio the team calculates it can achieve is 4,1 kg/bhp.”
“Until that Friday, when an e-mail announced that the restrictor size was to be 36 mm. Surprised, Moore ‘lathed’ one up in a Trier machine shop, fitted it to the engine, whose Bosch engine ECU crunched car weight and acceleration figures through its maths channel after the car was tested and came up with a fairly accurate estimate of 325 bhp (329,5 PS).”
To have the weight ratio of 3,4 kg/PS, the power should be 384 PS (379 bhp). In the video Chris Harris said that the restrictor size is 39 mm and power 350 hp (probably bhp). Calculating with the power of 329,5 PS with a 36 mm restrictor to a restrictor diameter of 39 mm, the power would be 387 PS (381 bhp). Which one is correct, 350 bhp or 379 bhp? Maybe with a NA engine the restrictor size is not that straight forward.
Having a rear engined rear wheel drive car is actually an advantage, not a disadvantage, for a rally car.
With a rear wheel drive car with a surtain power output the challenge will quickly become how to get the rear tires gripping, transforming the force of the engine to force of movement in the car.
Having weight over the driven wheels is off cource important, either physical weight or theoretical weight (down force).
You do not want a heavy car, just to produce a high weight on the driven wheels, but You want a light car with a weight distribution over the driven wheels.
Porsche have made a mid engined rally car earlier, it was the Porsche 914/6. But it did not have the same grip as the 911, and had difficult handling. (It also made the 904)
Its the same story with front wheel drive cars. The SAAB V4 had a big advantage with the engine position in front of the front driven wheels, giving very good traction. This is why the SAAB could outpace much stronger rear wheel drive competition on loose surfaces.
We see the same now with Nissans mainly front wheel driven LM P1-car, designed by the brilliant Ben Bowlby.
The GT-class can become great in my opinion, tough I think that the FIA should allow larger restrictors.
Probably around the same power than his previous Porsche of BMA also a 3.6 engine (http://www.bma-autosport.com/site/no...5-2303-fr.html) :) But according to the videos of German Rallies the Porsche has not the same sound like the one of BMA because different exhaust I think. Hope they change it, or already did :pQuote:
Originally Posted by tommeke_B
The engine isn't the same as when Gengler was driving it... ;)
Aha good ;p. Cant wait to see him on the stages at Haspengouw rally!
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does the cayman GT4 qualify ?? http://www.topgear.com/uk/car-news/p...led-2015-02-03
It seems so. Hopefully someone will take it and we'll see how better it could be than 997 GT3.Quote:
Originally Posted by cardy