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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 01-04-2007, 09:34 PM   #22981
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jason...

so when can we start sending in our money??
any new picture to share with us with the new change?

~Ming
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Old 01-04-2007, 10:10 PM   #22982
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hey everyone im just getting back into 12 scale and i was wondering if anyone has a setup for a L4 and its will be ran in stock and 19 and it will be on carpet so if i could get one that would be cool. thanks jordan

Last edited by mush104; 01-04-2007 at 10:29 PM.
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Old 01-04-2007, 10:49 PM   #22983
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Quote:
Originally Posted by mush104
hey everyone im just getting back into 12 scale and i was wondering if anyone has a setup for a L4 and its will be ran in stock and 19 and it will be on carpet so if i could get one that would be cool. thanks jordan
what kind of track will you be running on?


on a different note, has anyone ever run radial/cap tires? Foam tires gum up, pick up carpet fuzz, and then loose a massive amount of traction on the track while all the rubber sedan guys have plenty of traction all the way through their run.
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Old 01-04-2007, 11:02 PM   #22984
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well the track has some foam cars running but not much rite now but it is at a low to medium bite and the track is 80 by35 and people have been running the wraps to but i don't want to spend 20 a pair for those.
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Old 01-05-2007, 02:02 AM   #22985
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Has anyone used the BSR 1/12th scale tires, if so how do they hold up against Jaco and Parma for wear and durability?


Kevin
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Old 01-05-2007, 04:14 AM   #22986
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Quote:
Originally Posted by aoizip
jason...

so when can we start sending in our money??
any new picture to share with us with the new change?

~Ming

i will be posting a few pics of the production version very shortly buddy.if you would like to pre order you can do that now.we dont charge you until it ships.all kits will ship by pre order date.
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Old 01-05-2007, 08:17 AM   #22987
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Quote:
Originally Posted by protc3
i am still planning on releasing the kit by the beginning of february or the end of this month.i am making the new pod plates now along with alot of other parts.the chassis components will start running tommorow and pivot balls on monday.i have all the ball captures for the new rear suspension complete.instruction manual and packaging will be started in about 2 weeks.it will be close but i think we will be on schedule.
Cool. that's what I wanted to read.
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Old 01-05-2007, 08:19 PM   #22988
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Quote:
Originally Posted by mush104
well the track has some foam cars running but not much rite now but it is at a low to medium bite and the track is 80 by35 and people have been running the wraps to but i don't want to spend 20 a pair for those.
On low bite try pink double pink and run them bigger than normal. THe bigger sidewall should provide a little more traction in the corners.
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Old 01-05-2007, 08:28 PM   #22989
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Quote:
Originally Posted by smojoe
what kind of track will you be running on?


on a different note, has anyone ever run radial/cap tires? Foam tires gum up, pick up carpet fuzz, and then loose a massive amount of traction on the track while all the rubber sedan guys have plenty of traction all the way through their run.
if your having alot of problems with tires gumming up you may want to try a different compound.i never did try cap tires on 1/12th but my guess would be that it wouldnt go too well.i could be wrong though
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Old 01-05-2007, 08:29 PM   #22990
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Quote:
Originally Posted by mush104
well the track has some foam cars running but not much rite now but it is at a low to medium bite and the track is 80 by35 and people have been running the wraps to but i don't want to spend 20 a pair for those.
20 bucks a pair is a little steep.i would find another place to get tires.they should be around 15 bucks
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Old 01-05-2007, 09:55 PM   #22991
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Quote:
Originally Posted by protc3
if your having alot of problems with tires gumming up you may want to try a different compound.i never did try cap tires on 1/12th but my guess would be that it wouldnt go too well.i could be wrong though
Jack the gripper is the only traction compound allowed, but the track director has allowed us to try out niftec a few times for testing purposes. Niftec lasted another minute or so before the tires gummed up and traction was lost.
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Old 01-05-2007, 11:06 PM   #22992
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our indoor track on concrete was sprayed heavily with sugar water to get any traction at all. As a result our tires would get really gummed up too. For us it turned out the old suntan lotion trick worked to extend how long tires would go before getting gummed up.
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Old 01-06-2007, 12:50 AM   #22993
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The only time I have gummed up foams on sugar water, is if I ran the car before it was completely dry. Make sure it is dry, or it will gum up. Also, are you cleaning the tires in between rounds before adding compound or just adding the compound? You need to clean the tires with either lighter fluid or motor spray. I made this mistake when I first started 1/12th scale, until someone told me I needed to clean the tires after pulling the car off the track. As far as tires go, I think if you can get past the funky offset of the rims, GQ are the best. I have been running BLK/GRY fronts and Tan rears on Ozite, and the car is dialed with either stock or 19t. If you need a little more steering mid corner, try Magenta fronts. They are really good tires, I got almost 2 months of weekly club racing out of a set and I initially cut them to 1.70f and 1.75r. They are 1.65 and 1.75 now after 5 race days.
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Old 01-06-2007, 07:29 AM   #22994
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Hi everyone

Just got a lovely CRC T-Fource for xmas Have assembled it all, and put in a 19t Peak V2 motor.

I'm running 48dp, and geared it on a 25t pinion and 69t spur, which obviously pushes the motor quite far from the rear axle, however I have now encountered a problem:

The brush tube on the motor hits on one of the small white side springs, causing binding when the pod moves.

Has anyone else encountered this problem (guessing the same situation may occur with the Peak/Orion V2 modifieds too) - or got any tips on how to solve the problem.

Many thanks

Oli
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Old 01-06-2007, 08:34 AM   #22995
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Quote:
Originally Posted by KevinL
Has anyone used the BSR 1/12th scale tires, if so how do they hold up against Jaco and Parma for wear and durability?


Kevin
F.Y.I. the 10th scale pan car that won the 24 hour endro was using BSR foams. They said that the tires are flawless and had no chunking in a 24 hour race. This race was held on a in-door asphalt track.Plus BSR has been around 4-ever........

Last edited by RED-LINE M03; 01-06-2007 at 08:35 AM. Reason: .
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