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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 12-08-2006, 04:28 AM   #22351
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Quote:
Originally Posted by smojoe
and the new CRC front end, but that would just make us greedy
i thot getting the gen x i was being greedy but the car has helped me be faster oh yes
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Old 12-08-2006, 05:07 AM   #22352
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Quote:
Originally Posted by Slapmaster6000
I would like to see the new BMI car combined with the steering set-up from the MS2.3A from slapmaster...illest combo ever. I like the look/design of both cars so much!


hmmmmmmmmmmm..............

Yank the purple fronts and try blacks or CRC Duals. I assume you are having this trouble on carpet with something else other then Paragon.... welcome to 12th scale "lately". That's why I am building my "flex plate". It wont cure a junk car, but it will take car of the last few laps. If you are running a link car, pod droop. I have a weird theory that we need to be running an exotic at one of the car and an ecconomy tire at the other end. Be it purple/gray or black/pink. There is something about those combos that are self cleaning and prevent that tacky build up on the fronts.

if you decide you want to follow through with your new steering rack setup let me know.i can pre drill the chassis for it so if someone wants to use it the option is there for them.
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Old 12-08-2006, 05:11 AM   #22353
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I really like the look off the CF you used Jason.. The L-plates look promissing to. Will the production version have better acces for brushless motors?

Looking good!

-Hugo van den Berg
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Old 12-08-2006, 05:24 AM   #22354
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Quote:
Originally Posted by kerry
i have heard a rumor that xray is making a 1/12 scale for release at the end of the year. if its true then i look forward to running it, they never disapoint
Xray 12th

Quote:
1/12th Pan Car
This move is another no brainer for Xray and whilst I know less about this rumour I can see the rise in popularity over the last few years of this class to be a major deciding factor for their entry into this form of racing. Also to be considered is that as a major player in the RC industry Xray could easily out promote the current batch of manufacturers in this class who, for the most case, are rather small players in the overall industry.

The Car
Prodution wise, the simplicity of the 1/12th electric pan cars shouldnt offer much in the way of a challenge for Xray to design and construct and if they follow the same approach into this class as with other classes then they could do quite well straight away.

The Team
Again their team of top class electric racers are a perfect fit with most of them actually racing this class but with a different manufacturer. When you consider that the 1/12th Worlds runs the week prior to the 1/10th 190mm Worlds at the same venue and that their team is present during both then you can see even more reasons for Xray to enter this class.

When?
We expect to see these cars announced in the run up to, or during, the Nurnberg toy fair in Germany at the end of January beginning February next year.
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Old 12-08-2006, 05:49 AM   #22355
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Jason,

You get any tighter weave pattern you might as well use kevlar.....
But at least then you coudl market your chassis could be called bulletproof and no lawsuits could be filed against that claim...LOL

Man I tell you it seems that with all the drama of TC as of late, 12th scale designers have really put some great new innovation into this class. I just got into 12th and feel I have neglected my TC for some time....heck last time out at the track I had my new 007 and my new Gen X...Guess what got the track time...Yup Gen X got the race and the 007 got a practice pack ran through it...
Hopefully I can make it out to the carpet track on a practice day so I can learn more about 12th scale setups...Seems tires and weight transfer are where I need the most work.

Thanks guys for keeping this sweet class fun and competative. When I raced sunday I had the pleasure of racing "The Fabulous One" and couple other Fast SoCal guys, needless say I was way off pace for my second 12th scale race.

-Shookie <><
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Old 12-08-2006, 06:38 AM   #22356
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Quote:
Originally Posted by smojoe
looks good, but whats the difference between the tighter weave and standard weave (other then the obvious weave difference)?

It also tends to be a flatter panel. It is slightly more expensive from what I understand however. Interesting looking ride Jason.
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Old 12-08-2006, 03:56 PM   #22357
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thanks bro.i wanted to do something different from the norm.im sure you know exactly what i mean.

my car will come with a newly designed set of aluminum pod plates and upper carbon fiber plate to accomodate brushless.i am still working on that.i am just going to test with the existing set that i have.
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Old 12-08-2006, 08:23 PM   #22358
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Somebody got a new toy.......... Is it sunday yet.
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Old 12-08-2006, 08:29 PM   #22359
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what's up with the gay dots
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Old 12-08-2006, 08:38 PM   #22360
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ten minute one color spray can paint jobs are usually gay....... Guess what ???? It took ten minutes and i only had one spray can of blue so there ya have it. Besides jason will feel that much better when he gets it handed to him by the car with the gay dots.
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Old 12-08-2006, 09:01 PM   #22361
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its on now punk
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Old 12-08-2006, 09:02 PM   #22362
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Sean:

Hi,

maybe you should've just shot it white....... those yellow dots just........aren't.........well right.

have fun with the new car. tell Jason we're ready to test one on carpet for him!!!!!!!!!!!!!!!

Thanks
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Old 12-08-2006, 09:02 PM   #22363
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at least you know you wont glitch,you have excelent signal.
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Old 12-08-2006, 09:03 PM   #22364
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Quote:
Originally Posted by N4S
Somebody got a new toy.......... Is it sunday yet.
very nice sean

Last edited by Marcos.J; 12-09-2006 at 06:29 AM.
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Old 12-08-2006, 09:03 PM   #22365
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anyone know where I can get a GEN X ? any shops have them? does CRC have them if I order one from them online?
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