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This is a place to share knowledge related to 1/12th scale racing. It is not to be used for conversations.

KITS:
Click links to go to manufacturer product page. If any are missing please add them!

TIRES:
Pre-mounted tires readily available in the US:
Pre-mounted tires readily available in the Europe:
  • Hot Race ??

Gluing your own donuts:
https://www.youtube.com/watch?v=hm7z1rz-74s - Special thanks to Edward Pickering!
Truing tires:
https://www.youtube.com/watch?v=8wqHOLWq6Uc - Special thanks to Edward Pickering!

The following information came from HERE, with some editing and information added. Thanks Christian!

THIS MAY NEED UPDATING FOR THE NEW BLACK CRC CARPET

Brands:
BSR, CRC, Jaco:
Pro One is no longer selling to the public, but it and the brands above are all mounted by BSR and use the same foam. The nomenclature of the BSR vs Jaco/CRC is a little different in a few instances but is otherwise the same. The BSR foam consists of three families, and can be identifed as synthetics, naturals, and blends.

Synthetics - The old school, light weight, easy to true "dry feeling" tires. These include tires like CRC/Jaco Yellow (BSR White), Black, Gray, etc. These tires offer the highest wear rate and lowest grip. Many racers continue to use these nder high bite conditions.

Naturals - These tires are usually the best alternative for low bite and asphalt. They include Pink, Magenta, Double Pink, Lilac (BSR Team Purple), Purple, and other tires. These tires provide a ton of grip, but tend to get sticky in high bite conditions. This rubber does not wear as easily, and the cars will pick up gunk and fibers from the carpet under most high bite conditions. This is especially bad if the humidity is high.

Blends - These are the tires most people run today. They were initially called "JFT foam" by some, as it was believed that the tires were the same as the JFT tires. We can divide the blends further into two groups: high rubber and low rubber content. The high rubber would be the new rear Orange and Red from the BSR family, and the low rubber would be the Green and Blue varieties. When, asked about the difference, John Foister from BSR Tires said they came from the same "family" of foam, but they offered different grip. According to John, the Green/Blue has more bite than Orange/Red, but from track testing Oranges offer more bite than Green (being equivalent to in hardness) when the grip is high and absolutely no grip when it is lower. The Orange foam has a denser pore structure and the tire is not as prone to chunking. It is also important to note is that BSR Blue rears are not the same as the BSR Blue fronts!

JFT:
JFT stands for Japan Foam Tire. They started the new wave of foam tires we are all using now (Blue/Blu, Green/Greene, Dbl Blue, etc). These tires are a little different than the BSR tire family, but work in very similar conditions. They offers four varieties A (asphalt), C (carpet), S (???), and R (???). This does not mean that those types only work on that surface, but this is what they recommend.

JFT uses the same foam for fronts and rears if the color is the same.

A: Used on asphalt, considered close to the natural rubber variety and are named consistently with other natural tires.
C: Used on carpet, considered a blend.
S: Used on carpet?, tires are ???
R: Used on carpet?, tires are ???

For setup, the JFT foam seem to generate more bite than the BSR, therefore the car tends to be a little more aggressive.

Ulti:
Ulti is another Japanese brand that offers an array of compounds. They have their own way of rating tires, and are difficult to equate to other brands. They have 4 different varieties, each in varying degrees of hardness.

J: High rubber content tire, similar to Pink/ Magenta. Soft would be close to a pink. These offer the most bite and are great for asphalt/carpet front tire. (J hard being very popular)
X: "Balanced" blend, similar to JFT Blue/ Green. Soft is equivalent to Green, medium to Blue in hardness. Great for carpet!
Y: High synthetic blend with lower grip, and is not a very popular variety.
Z: A very expensive "special" foam that is supposed to be magic on asphalt. Only make it in soft shore.
European tires:
There are many great European foam tire brands that use their own types of foam, as well as traditional foams. SOmeone with more knowledge about them will need to fill this in!

Tire Diameter:
If you are racing on carpet, you have to evaluate how much grip your track has. If your track is low to medium grip, you can run bigger tires. If you are on higher bite you have to cut them smaller, there is simply no way around it. Bigger tires are needed for asphalt, especially in the rear. The larger tires provide much needed lateral bite.

Carpet (mm):
Low - Medium Bite
Front: 42.0 - 42.5
Rear: 42.5 - 43.00
Medium - High Bite
Front: 40.5 - 41.0
Rear: 41.5 - 42.0
Big Race
Front: 39.5 - 40.0
Rear: 40.5 - 41.0
Asphalt (mm):
Parking Lot
Front: 43.0 - 44.0
Rear: 44.0 - 45.0
Prepped High Bite
Front: 42.0 - 43.0
Rear: 43.0 - 44.0

Tire Saucing:
Most facilities have moved towards odorless traction additives such as SXT. Some of additives evaporate very quickly and some do not. This seems to be something that is also dependent on tire compound and ambient temperature. For example, saucing a Green compound seems like it never dries, especially when tjhe temperature is lower. We have found that wiping the tires off 15 minutes before we go run allows the sauce to cure, which makes the car come in much quicker with Green rears. Blue compounds on the other hand, do fine when wiped off right before hitting the track.

Saucing half front and full rear is a good initial starting point. If the front of the car is too agressive you can sauce les than half, or for a shorter amount of time.
Tire Fuzzing:
In conditions of increasing grip, foam tires will somewtimes get sticky and pick up fuzz and debris from the track. This is highly dependent on the rubber sedan tire that is being run at your local track and the compound/ type of foam you are running on you car. The softer the sedan tire and the harder/higher rubber content in your foam tire, trouble with fuzzing seems more likely to occur.

There are ways to get around fuzzing under most conditions, and usually involves the selection of the correct foam compound. The more fuzz you get, the softer/lower rubber content you want to run.

Examples:
Problem: Car fuzzes with Lilac/Team Purple fronts and car starts pushing.
Solution: Use a softer front tire and or different family of foam. Replace it with Blue or Double Blue front.

Problem: Car loses rear bite 6 minutes into the run. Blue rear tires look almost clean but have small carpet hairs.
Solution: Use Green rear tires. The softer compound wears instead of getting sticky, minimizing fuzz.

Tire Selection:
Starting out, pick 2 tire compounds for the front and rear. The following should have you covered 99% of the time.

Front - Green and Blue (BSR) or Green and Light Blue (JFT)
Rear - Blue and Double Blue (BSR) or Blue and Dark Blue (JFT)

You may wonder about other compounds out there and if they might be better, trust me, they probably won't be. Even if there are other tires that can be as fast, the synthetic family wears out really fast and the high natural rubber will probably fuzz on you over an 8 minute run. The blends family seems to be the most versatile foam type available today. They last awhile, and sticking to them will make your process of tire selection simpler.
Tire Charts:
BSR/CRC/Jaco



Contact



Corally



JFT (Japan Foam Tire)



Ulti



Enneti (Xceed)



ELECTRONICS:
ESC:
As of now, ROAR is staying 1S (3.7V nominal; 4.2V fully charged) for 1/12. There are many 1S ESC's with a built in BEC so nothing else is required to power the receiver and servo.

If you don't want to lock yourself into a 1S specific ESC, you do have other options! It is possible to use your 2S ESC without a booster or receiver pack, and the ESC simply supplies the lower voltage. If that does not appeal to you, you will need to use an Rx pack or booster. The Rx pack and booster will both supply the receiver with a higher voltage than the 1S pack.

If you decide to use an Rx pack, MAKE SURE TO REMOVE THE RED WIRE FROM THE ESC PLUG THAT GOES INTO THE RECEIVER!!!

If you choose to use a voltage booster, it works exactly how it sounds. Instead of plugging the ESC into the receiver, it plugs into the booster, and the booster plug goes to the ESC, supplying the higher voltage.

1S ESC:
If there are any missing please add them!!

If anyone would like a need for a chart comparing the ESC's specs PM fenton06 and I'll get one made and put in here!
Voltage Boosters:
If there are any missing please add them!
Servos:
BODIES:
Black Art (CRC - US Dist):
  • Audi R8C - BA002 - .020 Thick



  • Black Market (Mohawk 12) - BA005 - .020



  • Lola B10 - BA006 - .020 thick
  • Toyota TS030 - BA008 - .020 thick

    Lola - black/red, TS030 - green/pink


PROTOForm:

Reflex Racing/RSD:

SUSPENSION ADJUSTMENTS:

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Old 04-05-2010, 05:48 AM   #33841
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Quote:
Originally Posted by EVILGRAFX View Post
Can you get me free tickets to the US Vs. England world cup match?

Cmon the tickets are so cheap for you guys. I am sure You can buy out the stadium with the $ . Us locals are struggling to get tickets because they selling most of them to the other countries via credit card and internet. You must understand that the majority of the locals dont have internet access or credit cards. I purchased tickets and they are way too expensive. We paying for it in rands and getting charged in dollars. Sorry for the long and short of it.

They have made mention though that they will start doing over the counter sale because of those issues and they promised us reduced price. Yepeeeeee looking forward to that.

I can make a plan for you if you really want to come
. Please do come and support the africa World cup. If you need a tour guide or a local i can be your tour guide.

I will let you know. drop me a pm of your email and i will keep in contact.
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Old 04-05-2010, 05:54 AM   #33842
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Cmon the tickets are so cheap for you guys. I am sure You can buy out the stadium with the $ . Us locals are struggling to get tickets because they selling most of them to the other countries via credit card and internet. You must understand that the majority of the locals dont have internet access or credit cards. I purchased tickets and they are way too expensive. We paying for it in rands and getting charged in dollars. Sorry for the long and short of it.

They have made mention though that they will start doing over the counter sale because of those issues and they promised us reduced price. Yepeeeeee looking forward to that.

I can make a plan for you if you really want to come
. Please do come and support the africa World cup. If you need a tour guide or a local i can be your tour guide.

I will let you know. drop me a pm of your email and i will keep in contact.
Thanks, that's nice of you. No, I was just kidding with you anyway. I'm going to enjoy whatever matches I can on my comfortable couch. I don't know if I could take the constant horn sound in my ears the entire match anyway, God that's annoying. Here, I can always turn the volume down and get a break.
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Old 04-05-2010, 07:59 AM   #33843
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Originally Posted by EVILGRAFX View Post
Thanks, that's nice of you. No, I was just kidding with you anyway. I'm going to enjoy whatever matches I can on my comfortable couch. I don't know if I could take the constant horn sound in my ears the entire match anyway, God that's annoying. Here, I can always turn the volume down and get a break.
Hiya mate, just to let you know that us Brits will be heading over to Keegan's at Redmill Common to watch the game. If you fancy coming along to enjoy the game with us, feel free to do so although I will not be held responsible for the 'banter' that you may hear whilst there!
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Old 04-05-2010, 09:44 AM   #33844
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The VUVUZELA(HORN) is part of our soccer heritage. Those guys can blow your entire anthem on them . You dou get use to them after a while(MAYBE 20yrs)lol.

Ok, now stop jacking the thread.lol

So any input on the 2 cars i mentioned and the timing system.
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Old 04-05-2010, 10:00 AM   #33845
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Originally Posted by SamierF400 View Post
The VUVUZELA(HORN) is part of our soccer heritage. Those guys can blow your entire anthem on them . You dou get use to them after a while(MAYBE 20yrs)lol.

Ok, now stop jacking the thread.lol

So any input on the 2 cars i mentioned and the timing system.
Timing hardware is pretty much universally MyLaps (was called AMB until recently), www.mylaps.com.

Most large UK meetings seem to use BBK timing software. www.bbksoftware.com. BBK are also UK distributor for MyLaps. Software seems to vary quite a bit throughout the world.

Regarding cars, +1 with what wingracer has said. Just about all 12th scale cars are on a similar level. If you have people running a particular make of car near you, get that one. That way you will get more help when you need it.

Trev
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Old 04-05-2010, 10:11 AM   #33846
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So any input on the 2 cars i mentioned and the timing system.
Like Trev is saying, most 1/12 cars are about the same. The technology on these cars has not changed much in years. Other than little tweaks here and there to make them better or easier to work on, they're about the same. At our track, there are several different types of cars running and they are all just as competitive. If you pick either of those two cars, you'll be fine. I live in the states so, I have no idea if the web-sites here in the states are what you want to use. If you want to use sites from the states; for the Xray, I would use Nexusracing.net or stormerhobbies.com. If you want to use the Associated; Stormerhobbies.com or Amainhobbies.com are good sites. You may be better off using some European sites though.

I don't know anything about timing systems. Someone else would have to help you out there. You may want to check out the electronics area of the forum for that.

Wingman2 - Chris, there's no way I'm going to some pub full of blokes screaming and yelling in my ear and crying when the Yanks score on you.
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Old 04-05-2010, 02:17 PM   #33847
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Hey guys,

i posted earlier about my interest in starting 1/12 racing here in Kuwait, i got a phone call today that a collage Gym is available for our use during summer
since we'll using the gym temporarly, is it possible to lay the carpet down without glueing it to the floor?? is there something i should use between the carpet and the wooden floor?? any tips and advices are highly appreciated.

thanks

Ali
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Old 04-05-2010, 03:29 PM   #33848
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Hey guys,

i posted earlier about my interest in starting 1/12 racing here in Kuwait, i got a phone call today that a collage Gym is available for our use during summer
since we'll using the gym temporarly, is it possible to lay the carpet down without glueing it to the floor?? is there something i should use between the carpet and the wooden floor?? any tips and advices are highly appreciated.

thanks

Ali
Our club uses a sports hall every Saturday night, where we have to lay the carpet down and take it back up at the end of the night. No problem doing this without glueing or using anything else underneath as long as the floor is flat. We roll the carpet out, stretch and tape the ends one roll at a time, then match the next roll up to this and do the same. When all the rolls are out the joins are taped along their length. No problem with the carpet at all during a night doing this.

Trev
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Old 04-05-2010, 03:50 PM   #33849
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Originally Posted by TrevCoult View Post
Our club uses a sports hall every Saturday night, where we have to lay the carpet down and take it back up at the end of the night. No problem doing this without glueing or using anything else underneath as long as the floor is flat. We roll the carpet out, stretch and tape the ends one roll at a time, then match the next roll up to this and do the same. When all the rolls are out the joins are taped along their length. No problem with the carpet at all during a night doing this.

Trev
thanks for the fast answer, so if i get it right, you tape each roll to the ground and then you tape them to each other along their lengs??

any specific tape to use??

i saw few 1/12 races where they have a nice dark path like asphalt tracks!! how do you get this?? do they spray anything like on asphalt or is it because of the amount of run time + traction compound + foam tires on it??

cheers

Ali
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Old 04-05-2010, 03:54 PM   #33850
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Good old Duct tape.

The groove shows up after enough time is run on it. Most of the time, you won't see it for a club race night if you pick up the carpet each time. (You may see a little by the end of the night I guess.)

Some tracks spray TC down beforehand, but it's not necessary. Also the color depends on the compound used. Tracks that are primarily Jack get blacker, but it's not any better necessarily. Just looks good for the camera!

Paul
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Old 04-05-2010, 04:05 PM   #33851
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Hey Paul,

thanks for the fast answer, if we build the track, it will be there for 3 monthes without having to remove anything, and i do agree about the track looking great for photos
talking about the compounds, i've been reading alot and its always the name Jack thats mostly appears. is it the best compound out there?? i know trinity has the sticky fingers too, how do you compare them to eachother??

last question about 1/12, when you use a life/lipo RX pack, how is the wiring done?? speedo directly to Motor without passing through the RX?? or shall i get the new LRP speedo where you dont need a RX pack or a booster??

cheers

Ali
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Old 04-05-2010, 06:24 PM   #33852
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Jack is used alot because its odorless, but good ol paragon is a better traction additive. But what ever you guys use try to only use one brand. Using different brands of traction additives has been reported to lead to inconsistant traction over time.
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Old 04-05-2010, 08:22 PM   #33853
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Wingman2 - Chris, there's no way I'm going to some pub full of blokes screaming and yelling in my ear and crying when the Yanks score on you.

Haha! That'll be the day mate! In fact, I have been to see England play the US of A at Wembley stadium and I seem to remember that the final score was 2-0 to England!!

Cheeky bugger!
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Old 04-05-2010, 08:37 PM   #33854
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Just passing thru with a little spam of the 12th scale sort

12th Scale Racing is Alive and Well in So Cal
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Old 04-06-2010, 11:06 AM   #33855
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I hate to do it, but the boys just do not like racing on road and seeing how I cannot be selfish I am selling my awesome Speed Merchant 1/12th scale if any of you might be interested. The fourth car down.
ON ROAD 4 CAR SELL OUT
Pm me with any questions.
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