291LikesGT12 Racing
09-22-2014, 08:51 AM
#1
GT12 Racing
The BRCA rules can be found here. It is not a national class in the US, yet.
We will be trying the GT12 class in Madison, WI @ MARCCA this fall. There are technically 2 classes, but as the rules state: if there are less than 20 entries they run together sorted by qualifying times.
The 2 classes are GT12 Super Cup and GT12 Production Cup. Most if not all of us are going to set up for GT12 Super Cup (13.5 1S blinky with diff allowed). We've been making a lot of noise in the SupaStox thread as that seams to be the preferred chassis, but the class also allows Mardave and TIC cars. Rumor has it that Zen Racing will also have a chassis soon. Our club will also allow 21.5 2S to start with a change to straight 1S at some point.
Just so everyone knows what the costs are like, the chassis with tires must sell for less than 100 British Pounds (163.00 at this moment). If you haven't had a look please check out the SupaStox thread. You need a painted body, electronics and you're set to race. The diff makes rear tire wear very low.
The bodies are very realistic as are the tire widths and diameters making this not just a great racing class, but one that is fun to watch.
We will be trying the GT12 class in Madison, WI @ MARCCA this fall. There are technically 2 classes, but as the rules state: if there are less than 20 entries they run together sorted by qualifying times.
The 2 classes are GT12 Super Cup and GT12 Production Cup. Most if not all of us are going to set up for GT12 Super Cup (13.5 1S blinky with diff allowed). We've been making a lot of noise in the SupaStox thread as that seams to be the preferred chassis, but the class also allows Mardave and TIC cars. Rumor has it that Zen Racing will also have a chassis soon. Our club will also allow 21.5 2S to start with a change to straight 1S at some point.
Just so everyone knows what the costs are like, the chassis with tires must sell for less than 100 British Pounds (163.00 at this moment). If you haven't had a look please check out the SupaStox thread. You need a painted body, electronics and you're set to race. The diff makes rear tire wear very low.
The bodies are very realistic as are the tire widths and diameters making this not just a great racing class, but one that is fun to watch.
09-23-2014, 01:43 PM
#6
Tech Fanatic
Don't turn it right up! These cars weigh 950g, or about 30% more than a 12th car. Go as high as you can without giving the motor a caning, and make absolutely sure the motor peaks out half way down the straight.
It is all too easy with these cars to wind them up and think they are going fast, when in fact all you are doing is piling heat into the motor. They have to be geared down in order for all that weight to be accelerated promptly and the motor to peak out on the straight. HTH
It is all too easy with these cars to wind them up and think they are going fast, when in fact all you are doing is piling heat into the motor. They have to be geared down in order for all that weight to be accelerated promptly and the motor to peak out on the straight. HTH
09-23-2014, 01:58 PM
#7
Don't turn it right up! These cars weigh 950g, or about 30% more than a 12th car. Go as high as you can without giving the motor a caning, and make absolutely sure the motor peaks out half way down the straight.
It is all too easy with these cars to wind them up and think they are going fast, when in fact all you are doing is piling heat into the motor. They have to be geared down in order for all that weight to be accelerated promptly and the motor to peak out on the straight. HTH
It is all too easy with these cars to wind them up and think they are going fast, when in fact all you are doing is piling heat into the motor. They have to be geared down in order for all that weight to be accelerated promptly and the motor to peak out on the straight. HTH
09-23-2014, 07:50 PM
#8
I started collecting parts today for the supastox to run GT12. Picked up four 13.5T motors in a cheap package deal: 1 used- Reedy, 1 used- LRP, 1 new/ 1 used- certified 5% D3.5s w/ 2 extra tuning rotors. I already have 2 Speedpower 6500mah 70c 1S lipos. Ordering a Trackstar GenII 120A 1S ESC soon, kind of annoying that the program card is only available from China...
I'm assuming MARCCA racers don't need to worry about the BRCA approval lists:
motor list
http://www.brca.org/sites/www.brca.o...0v6%20pdf1.pdf
battery list
http://www.brca.org/sites/www.brca.o...14%29%20v4.pdf
I'm assuming MARCCA racers don't need to worry about the BRCA approval lists:
motor list
http://www.brca.org/sites/www.brca.o...0v6%20pdf1.pdf
battery list
http://www.brca.org/sites/www.brca.o...14%29%20v4.pdf
09-23-2014, 11:06 PM
#9
I started collecting parts today for the supastox to run GT12. Picked up four 13.5T motors in a cheap package deal: 1 used- Reedy, 1 used- LRP, 1 new/ 1 used- certified 5% D3.5s w/ 2 extra tuning rotors. I already have 2 Speedpower 6500mah 70c 1S lipos. Ordering a Trackstar GenII 120A 1S ESC soon, kind of annoying that the program card is only available from China...
I'm assuming MARCCA racers don't need to worry about the BRCA approval lists:
motor list
http://www.brca.org/sites/www.brca.o...0v6%20pdf1.pdf
battery list
http://www.brca.org/sites/www.brca.o...14%29%20v4.pdf
I'm assuming MARCCA racers don't need to worry about the BRCA approval lists:
motor list
http://www.brca.org/sites/www.brca.o...0v6%20pdf1.pdf
battery list
http://www.brca.org/sites/www.brca.o...14%29%20v4.pdf
If you think it's still in good sportsmanship, it should be alright.
09-24-2014, 07:07 AM
#11
The wife will be piloting the supastox, so it will be turned down to her comfort level. So the D3.5s shouldn't be a problem. I can't pass up a good deal when I find one, especially on my budget. I could put the Reedy Sonic in considering it's on the approved list, but it has a full season on it... Compared to the D3.5s were one is new, and the other only has Snow Birds on it in a 1/12th scale...
09-24-2014, 10:07 AM
#12
Well the batteries are on the approved list at least.
The wife will be piloting the supastox, so it will be turned down to her comfort level. So the D3.5s shouldn't be a problem. I can't pass up a good deal when I find one, especially on my budget. I could put the Reedy Sonic in considering it's on the approved list, but it has a full season on it... Compared to the D3.5s were one is new, and the other only has Snow Birds on it in a 1/12th scale...
The wife will be piloting the supastox, so it will be turned down to her comfort level. So the D3.5s shouldn't be a problem. I can't pass up a good deal when I find one, especially on my budget. I could put the Reedy Sonic in considering it's on the approved list, but it has a full season on it... Compared to the D3.5s were one is new, and the other only has Snow Birds on it in a 1/12th scale...
Third chassis in the works, full upgrades and diff. Comes with an unpainted G903 (Audi) body.
09-24-2014, 10:22 AM
#13
Last night I ran car 2 for the first time. Trackstar/Turnigy electronics and motor were very quick. A few quick tests on the motor checker to get the timing better and one gear change and off it went. Very quick on the straight! Came off at 117* after 8 or 9 minutes of nose to tail running with celt's car. I was not driving as my trigger finger may be broken, so thanks to Tazio Nuvolari for stepping in.
09-24-2014, 10:41 AM
#14
I may do that to the Sonic, she doesn't need anything faster then that anyhow. So at what point does a motor need to be retired? any obvious signs? I recall reading somewhere about the magnets weakening with age or something like that?
Third chassis, nice! So you now have 3 supastox and Stan has 2 right?
If anyone comes across a used supastox for a decent price and doesn't want it let me know! I haven't bought a kit yet... try'n to do this on the cheap.
09-24-2014, 10:44 AM
#15
I may do that to the Sonic, she doesn't need anything faster then that anyhow. So at what point does a motor need to be retired? any obvious signs? I recall reading somewhere about the magnets weakening with age or something like that?
Third chassis, nice! So you now have 3 supastox and Stan has 2 right?
If anyone comes across a used supastox for a decent price and doesn't want it let me know! I haven't bought a kit yet... try'n to do this on the cheap.
Third chassis, nice! So you now have 3 supastox and Stan has 2 right?
If anyone comes across a used supastox for a decent price and doesn't want it let me know! I haven't bought a kit yet... try'n to do this on the cheap.