TonyG > New Race Car Build Thread
01-13-2014, 09:24 PM
#841
Rennlist Junkie Forever
Thread Starter
And the answer is........
It's a custom water jet cut ABS ring welded to the stock ABS spindle.
The purpose?
The rear tires are too tall, percentage wise. Which will throw the ABS off.
The solution (when using the tall rear tires) is what you see.
:-)
TonyG
It's a custom water jet cut ABS ring welded to the stock ABS spindle.
The purpose?
The rear tires are too tall, percentage wise. Which will throw the ABS off.
The solution (when using the tall rear tires) is what you see.
:-)
TonyG
01-14-2014, 04:27 AM
#842
Nordschleife Master
Very nice solution. But with all that work I would have looked into a BMW / Teves Motorsport setup. That system have an auto learning system for different wheel sizes and have better performance.
01-14-2014, 09:53 AM
#843
Rennlist Junkie Forever
Thread Starter
If I upgrade to the Motorsport setup in the future (which I highly doubt), I can sell these all day long.
TonyG
01-14-2014, 09:58 AM
#844
Nordschleife Master
I'm in the middle of doing my Boxster install right now and damn how much time it takes to solve triggers etc with everything is custom when it comes to uprights and drive shafts etc.
01-14-2014, 10:00 AM
#845
Nordschleife Master
What is Vision's take on the "ice mode" issues?
Some seem to swear that none of the 3 or 4 channel ABS systems work with slicks and massive grip.
From what I gather it seems to be more of an issue on the 4 channel systems than the early 996/Boxster 5.3 ABS.
Some seem to swear that none of the 3 or 4 channel ABS systems work with slicks and massive grip.
From what I gather it seems to be more of an issue on the 4 channel systems than the early 996/Boxster 5.3 ABS.
01-14-2014, 12:40 PM
#846
Rennlist Junkie Forever
Thread Starter
The 5.3 3 channel Bosch unit works perfectly fine. There are no issues with "ice mode" on any of the race cars running big slicks out here.
The people that were running the motorsport unit on previous race cars are not spending the money on it a second time around on their subsequent cars. They are running the early Bosch 5.3 unit (very successfully I might add....).
TonyG
01-23-2014, 01:53 PM
#848
Rennlist Junkie Forever
Thread Starter
1.21.2014 Update
Front fenders installed. Vents cut. Rear Quarters Trimmed (need to be 7" wider than the existing wide body!).
Waiting on the 997GT3R fender flares to arrive on Monday to install (1" front, 3 1/2" rear). This on top of the existing very wide wide body.
ETA on the track for testing is 10 days
TonyG
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Front fenders installed. Vents cut. Rear Quarters Trimmed (need to be 7" wider than the existing wide body!).
Waiting on the 997GT3R fender flares to arrive on Monday to install (1" front, 3 1/2" rear). This on top of the existing very wide wide body.
ETA on the track for testing is 10 days
TonyG
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01-23-2014, 03:20 PM
#849
Rennlist Member
What size are those rears? They don't look stupidly big in the pic but clearly need the bolt on flare you mention. Are there spacers on there?
01-23-2014, 06:54 PM
#850
Rennlist Junkie Forever
Thread Starter
No spacers. The rims were custom built for the car.
The rear track is dictated by the front track in so much as that you want to get the front track where you want it, then the rear needs to be at the correct ratio to the front. That puts the rear track where it is.
As far as flares go, I could widen the existing wide body. But instead we all through it would look more current to give it the GT3R flares along with the front fender vents, the rear GT3R bumper vents, the rear diffuser, and the dual center exhaust exit setup.
TonyG
01-23-2014, 08:05 PM
#851
Rennlist Member
330/710 rear.
No spacers. The rims were custom built for the car.
The rear track is dictated by the front track in so much as that you want to get the front track where you want it, then the rear needs to be at the correct ratio to the front. That puts the rear track where it is.
As far as flares go, I could widen the existing wide body. But instead we all through it would look more current to give it the GT3R flares along with the front fender vents, the rear GT3R bumper vents, the rear diffuser, and the dual center exhaust exit setup.
TonyG
No spacers. The rims were custom built for the car.
The rear track is dictated by the front track in so much as that you want to get the front track where you want it, then the rear needs to be at the correct ratio to the front. That puts the rear track where it is.
As far as flares go, I could widen the existing wide body. But instead we all through it would look more current to give it the GT3R flares along with the front fender vents, the rear GT3R bumper vents, the rear diffuser, and the dual center exhaust exit setup.
TonyG
Current aero would have approx half the rear of the front and rear fenders cut away to expose the tyre.
01-23-2014, 08:56 PM
#852
Rennlist Junkie Forever
Thread Starter
The rims are:
18x11, and 18x13
Tires are 280 or 300 fronts and 330 rears.
The 280 fronts barely fit under the Broadfoot wide body front fenders. So the front flares will only be 1".
The rears flares will be 3.5" each and will sit on the GT Racing wide body rear fenders.
The overall car body will be approximately 13" wider than stock.
TonyG
01-23-2014, 09:39 PM
#853
Rennlist Member
Compared to you running the old square setup it will be interesting if you run say 280 and 330. You’d imagine more understeer but with your suspension setup being completely re modelled that’s anyone’s guess until you actually start your shakedowns.
Current Aero…meaning what people are using now on many racecars. A lot of cars are running with half the rear of the tyres showing due to no bodywork to relieve pressure. Hence your front vents.
Current Aero…meaning what people are using now on many racecars. A lot of cars are running with half the rear of the tyres showing due to no bodywork to relieve pressure. Hence your front vents.
01-24-2014, 12:29 AM
#855
Rennlist Member
Sounds unlikely, plus there are more than just Porsche doing it. They're using wind tunnel and CFD to arrive at their conclusions. Hope to know a bit more about this sort of thing next month myself. (No...no windtunnel...)