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-   -   USGT (https://www.rctech.net/forum/electric-road/411122-usgt.html)

hotrodchevy14 09-07-2012 03:46 PM

paging robk to the information desk please....robk to the information desk...heh heh heh please clarify whats meant by 10mm wing cord....thank you.

FauxMako 09-07-2012 03:55 PM

So LMP type bodies are legal? I thought the idea was GT class cars not LMP class cars? I.e., close to street cars not prototype race only cars.

From lemans.org ( http://www.lemans.org/en/races/24h/d...roduction.html ):
The "24 Hours of Le Mans" technical regulations distinguish two major car families: The "Prototypes" and "Grand Touring", each of which is split into two parts. Each category fights rigorously for victory in its class.


"PROTOTYPES"
The "Prototype" category refers to cars exclusively developed for competition on track and which meet the technical regulations of the Automobile Club de l’Ouest. The performance levels and technological development make this category overeign in endurance.

"GRAND TOURING"
The "Grand Touring" category features cars derived from models homologated for road use and which can be purchased. A minimum of 100 road cars must be built by the major car manufacturers and a minimum of 25 for the smaller makes. Easily identifiable by the public, the GTs always achieve great success.

6376vette 09-07-2012 06:02 PM


Originally Posted by snoopyrc (Post 11185371)
So how do we define it. Rise? Kickup? Plain ol height?

I think the easiest way is height. Defined as the spoiler height and not the distance above the deck lid although I think this distance should have some parameters too to prevent unrealistic super tall spoilers unless the car was originally equipped with them. ex 1970 superbird.

Kevin K 09-07-2012 06:05 PM


Originally Posted by hotrodchevy14 (Post 11185244)
what is the wing cord? the side dams?...thanks Kevin

Thickness of the wing is what we were referencing...any lexan wing can not be thicker then 10mm....there is no rule for black molded wings. This was so that people would run the molded wings more so they would look more scale and not run an offroad buggy rear wing on the back of their body. We have a lexan jig thats has a 10mm cut out in it and it has to slide over the back of the wing...you can do the same thing with a pair of calipers set it to 10mm and see if it will fit over the wing top to bottom. There is no rule for side damns other then they cant stick up higher then the wing.


Originally Posted by vivo quevas (Post 11185294)
It is the kick up in the back, it has to be cut down to 10mm and the rules my club uses 15mm on the up side of the side damms.

Yes...USGT doesnt have any rule for the side damns other then they cant stick up higher then the top of the wing.


Originally Posted by 6376vette (Post 11185341)
I imagine this what the wing rule was supposed to refer too but it is not wing chord. Wing chord is the distance from the leading edge of the wing to the trailing edge.

http://wright.nasa.gov/airplane/geom.html

Maybe Rob k can clear up any confusion on what the rule means.

Well when Rob and I made up the rules we called it wing cord but its wing thickness from the bottom flat part of the wing to the highest part of the kicked up part of the wing.


Originally Posted by snoopyrc (Post 11185371)
So how do we define it. Rise? Kickup? Plain ol height?

See above how to measure it...


Originally Posted by FauxMako (Post 11185399)
So LMP type bodies are legal? I thought the idea was GT class cars not LMP class cars? I.e., close to street cars not prototype race only cars.

From lemans.org ( http://www.lemans.org/en/races/24h/d...roduction.html ):
The "24 Hours of Le Mans" technical regulations distinguish two major car families: The "Prototypes" and "Grand Touring", each of which is split into two parts. Each category fights rigorously for victory in its class.


"PROTOTYPES"
The "Prototype" category refers to cars exclusively developed for competition on track and which meet the technical regulations of the Automobile Club de l’Ouest. The performance levels and technological development make this category overeign in endurance.

"GRAND TOURING"
The "Grand Touring" category features cars derived from models homologated for road use and which can be purchased. A minimum of 100 road cars must be built by the major car manufacturers and a minimum of 25 for the smaller makes. Easily identifiable by the public, the GTs always achieve great success.

Mainly there are no "open cockpit" type cars allowed. Some of the prototype cars are not shapped to differently then some of the GT cars. This McAllister prototype Vette is shapped very much like some of the HPI and Tamiya GT bodies so there is no reason it cant be raced.

6376vette 09-07-2012 06:08 PM


Originally Posted by FauxMako (Post 11185399)
So LMP type bodies are legal? I thought the idea was GT class cars not LMP class cars? I.e., close to street cars not prototype race only cars.

From lemans.org ( http://www.lemans.org/en/races/24h/d...roduction.html ):
The "24 Hours of Le Mans" technical regulations distinguish two major car families: The "Prototypes" and "Grand Touring", each of which is split into two parts. Each category fights rigorously for victory in its class.


"PROTOTYPES"
The "Prototype" category refers to cars exclusively developed for competition on track and which meet the technical regulations of the Automobile Club de l’Ouest. The performance levels and technological development make this category overeign in endurance.

"GRAND TOURING"
The "Grand Touring" category features cars derived from models homologated for road use and which can be purchased. A minimum of 100 road cars must be built by the major car manufacturers and a minimum of 25 for the smaller makes. Easily identifiable by the public, the GTs always achieve great success.

According to the way the rules are written lmp style bodies are legal in usgt although it seems a lot of house rules add the gt style bodies only. The upcoming southern nationals is gt style bodies only. I think most racers stay within reasonable gt parameters. Maybe a concept car or a car that didn't really race but a reasonable representation of what a gt car should be.

If you want to run lmp talk to me tomorrow. I have some 2wd ideas for a lmp and gtp class.

robk 09-07-2012 06:21 PM

http://www.rctech.net/forum/attachme...otype-copy.jpg

http://t3.gstatic.com/images?q=tbn:A...bcbZ4702TtkYcg

http://www.ultimatetamiya.com/cars/t...ta-garaiya.jpg


http://ecx.images-amazon.com/images/...500_AA300_.jpg

Here's three bodies, that are similar in profile. Different series, but you can see the Arta is pretty wild, as is the McLaren. The Saleen is actually pretty close in profile to the Corvette. I don't see why there should be a problem with the Corvette.

Kevin K 09-07-2012 06:23 PM


Originally Posted by FauxMako (Post 11185399)
So LMP type bodies are legal? I thought the idea was GT class cars not LMP class cars? I.e., close to street cars not prototype race only cars.

From lemans.org ( http://www.lemans.org/en/races/24h/d...roduction.html ):
The "24 Hours of Le Mans" technical regulations distinguish two major car families: The "Prototypes" and "Grand Touring", each of which is split into two parts. Each category fights rigorously for victory in its class.


"PROTOTYPES"
The "Prototype" category refers to cars exclusively developed for competition on track and which meet the technical regulations of the Automobile Club de l’Ouest. The performance levels and technological development make this category overeign in endurance.

"GRAND TOURING"
The "Grand Touring" category features cars derived from models homologated for road use and which can be purchased. A minimum of 100 road cars must be built by the major car manufacturers and a minimum of 25 for the smaller makes. Easily identifiable by the public, the GTs always achieve great success.

To go further on this....No you cant race LMP cars such as 2RWD solid rear axle Tamiya cars or WGT type cars in USGT. Yes you can race Prototype type close cockpit bodies in USGT. There is not enough racers to break this class into two classifications just based off of body. Some of the legal GT style bodies from HPI and Tamiya below here are very close in shape to this McAllister body so there is no reason to not allow this body.

http://www.hpiracing.com/products/en/17547/
http://www.hpiracing.com/products/en/17523/
http://www.hpiracing.com/products/en/7046/

http://www.tamiyausa.com/product/ite...oduct-id=51292
http://www.tamiyausa.com/product/ite...oduct-id=51357


http://www.usvintagetransam.com/rules/index.html

USGT Class Rules and Specifications


Chassis Specification:
Any 1/10 4wd or Fwd sedan with 4 wheel independent suspension.

Weight Specification:
4wd 1450g weight Fwd 1200g weight

Body Specifications:
Any 190mm or 200mm body. Body can be any body that is NOT on the ROAR T2 body list. FWD encouraged to use FWD bodies NO Trucks
Any "SCALE" molded wings can be used. Lexan wings 10mm maximum height / side dam height
Scale type race liveries encouraged

Tire & Wheel Specifications:
Tires-Any treaded (non slick) non belted rubber tire available 24 or 26mm. Removing belts from belted tires is not allowed. Must used a non-molded (ex. open cell foam) insert or no insert. Grinding of tire tread is NOT permitted. Sanding of mold seam to remove seam is allowed.
Wheels- Any 24 or 26mm spoke (non-dish) type wheel

While the above is the ideal for this class, a track, event, or series may approve a premounted tire, slick tires being acceptable. A spoked wheel is encouraged if possible for premounted tires


Ride Height Specification:
Minimum ride height is 5mm.



Motor Specifications:
21.5 + 2s lipo batteries No tuning rotors, must use OEM rotor 12.3-12.5mm

Approved ESCs:
ESC ROAR approved spec software or USVTA list

Race Specification:
6 minute qualifiers
8 minute mains

Battery Specifications:
ROAR approved hard case batteries

6376vette 09-07-2012 06:40 PM


Originally Posted by Kevin K (Post 11185828)
To go further on this....No you cant race LMP cars in USGT. Yes you can race Prototype type close cockpit bodies in USGT. There is not enough racers to break this class into two classifications just based off of body. Some of the legal GT style bodies from HPI and Tamiya below here are very close in shape to this McAllister body so there is no reason to not allow this body.

http://www.hpiracing.com/products/en/17547/
http://www.hpiracing.com/products/en/17523/
http://www.hpiracing.com/products/en/7046/

http://www.tamiyausa.com/product/ite...oduct-id=51292
http://www.tamiyausa.com/product/ite...oduct-id=51357

How can you allow Daytona prototypes but not Leman's lmp cars? There are plenty of closed cockpit Lmp cars. The bently speed 8, new Audi and Peugeot, panoz, Toyota tso 20, Mercedes clk gtr, Porsche 911, Nissan r390 and I'm sure I missed some. LMP stands for lemans prototype (the McAllister corvette is a Daytona prototype) but lmp does not define an open cockpit car.

robk 09-07-2012 06:43 PM

I think what Kevin is trying to say is you can't race pan cars in a sedan class.

Kevin K 09-07-2012 06:44 PM


Originally Posted by 6376vette (Post 11185889)
How can you allow Daytona prototypes but not Leman's lmp cars? There are plenty of closed cockpit Lmp cars. The bently speed 8, new Audi and Peugeot, panoz, Toyota tso 20, Mercedes clk gtr, Porsche 911, Nissan r390 and I'm sure I missed some. LMP stands for lemans prototype (the McAllister corvette is a Daytona prototype) but lmp does not define an open cockpit car.

Show me some LMP bodies that will fit 190-200MM sedans....We are talking actual bodies that are being produced for RC not what the REAL cars are racing.

robk 09-07-2012 06:50 PM

There have been guys running the 911 Gt from Hpi for a while, and the CLK is fine too.

http://i141.photobucket.com/albums/r...l/Merc0022.jpg

http://www.gabahobby.com/produto/thu...bb9fcac450.jpg

6376vette 09-07-2012 07:06 PM


Originally Posted by Kevin K (Post 11185900)
Show me some LMP bodies that will fit 190-200MM sedans....We are talking actual bodies that are being produced for RC not what the REAL cars are racing.

As you wish.

http://www.rcmart.com/colt-m1130-200...?cPath=438_876

http://www.rcmart.com/colt-m1136-200...?cPath=438_876

http://www.rcmart.com/colt-m1138-200...?cPath=438_876

http://www.rcmart.com/colt-m1141-200...?cPath=438_876

Some of these are labeled as gt 1 some lmp some group c but they all fall into that prototype category. There are others available such as the Mazda 787 Toyota 88 Nissan 89 sauber Mercedes etc.

6376vette 09-07-2012 07:08 PM


Originally Posted by robk (Post 11185910)
There have been guys running the 911 Gt from Hpi for a while, and the CLK is fine too.

http://i141.photobucket.com/albums/r...l/Merc0022.jpg

http://www.gabahobby.com/produto/thu...bb9fcac450.jpg

Thank you for the clarification. :cool:

Kevin K 09-07-2012 07:25 PM


Originally Posted by 6376vette (Post 11185955)
As you wish.

http://www.rcmart.com/colt-m1130-200...?cPath=438_876

http://www.rcmart.com/colt-m1136-200...?cPath=438_876

http://www.rcmart.com/colt-m1138-200...?cPath=438_876

http://www.rcmart.com/colt-m1141-200...?cPath=438_876

Some of these are labeled as gt 1 some lmp some group c but they all fall into that prototype category. There are others available such as the Mazda 787 Toyota 88 Nissan 89 sauber Mercedes etc.

Ok so are any of them current LMP cars?
They are all fine aside from the Porsche that you posted its a door stop...

The class is based around GT cars...cars that are not Door-stops or wedges like a 12th scale body or 1/10th pan car body. Something that has a wing that stands off not molded into the body shape like the Porsche you posted a link to.

robk 09-07-2012 07:31 PM

Really we are trying to avoid the cars like the Porsche 962. No can am cars, IMSA, that sort of thing.

If it looks like the typical 1/12 or 1/8 body that is a big no go.


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