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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 03-10-2002, 10:37 AM   #706
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Didnt get to race again this weekend....how did everyone elses racing go?????anybody race the Indy race?????
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Old 03-10-2002, 07:47 PM   #707
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Hey guys..... just got in and boy am I tired. This weekend was great then poor then it started looking up and then heartbreak. Details at 11'. LOL Racing was fast and furious (no pun intended) on a track smaller than Venture were Mod 12th and Sedan were turning 8.0-8.6 sec lap times!!!! Traction started off good on Thursday and then by Friday evening it went thru the roof!!! Some distinct ripples and bumps laced certain parts of the track and added to the drama of car setup along with the grip, just par for the course and no biggie. About 85% of all cars got silly screwy from the traction, first fighting push, then the dreaded traction roll, and finally the super fast reacting...it slices...it dices... it's soooo on edge (both sedans and 12ths). The race was great and the annoucing was constant. It announcing could have used some help regarding traffic control because often times people didn't know who was where and it created some fiascos' on the track with people forgetting that it was qualifying and not deathmatch 2002 edition. Most of the mains were.... how shall we say....catastrophic but some very good racing went on in spite of that. You may have heard that the Hobby Town USA Track known to us racers simply as "Indy" will be closing down in a month or so but some of the locals will be opening a new one in the area. No dates/times/direct location as yet. Sonny (pronounced suny) was awesome and worked hard. It was a great tune-up for the Nats in a week and a half.
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Old 03-10-2002, 07:57 PM   #708
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Oh yeah...Special Thanks to Jim Dieter and Dave Chester of Trinity whoes help was invaluable throughout the weekend and I left faster than I went. When the traction came up I would have stayed out in left field all weekend if it weren't for their assistance. Thanks to Fabulous Favio Vega for the room share and friendship, this guy is going to be up there if he stays with it. Thanks to Dave Lee for the kind words and "lil" Mike Pullfer for his friendship-glad to see he won 12th stock!!! Like I said, details at 11' because I'm pretty tired. Petenis e-mail me. BTW you probably DO have one of my Integy motors and it's probably a 10dbl. Big Jim has been winding Integy's arms for at least 6months now and they really are working pretty well. As fast as that motor is we really saw HP this weekend didn't we? Are you going to the Nat's? Till 11'-Dave Arnold
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Old 03-10-2002, 07:59 PM   #709
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Yikes! should be whose!!!! I told you all I was tired.-DA
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Old 03-10-2002, 08:15 PM   #710
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HEY GUYS, just got a new Corally SP12M and was wondering if any of you have pictures of the same car with the electronics mounted. I have no idea what to do with the car yet so any help would be very much appreciated. Email me your responses. Thanks again!
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Old 03-10-2002, 09:12 PM   #711
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Alfred....where do you race in Houston....Reflex or K&M?????I've raced at both.....
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Old 03-11-2002, 10:59 AM   #712
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Hey darnold,

Glad you had a ggod time here over the weekend. I was hoping to get a chance to come by over the weekend and watch a little, but family came first. I hope all the right-turners enjoyed themselves, because now the carpet will be really messed up for us lefties this week!
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Old 03-11-2002, 04:12 PM   #713
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Default Hey Dave

Although I was not at the race some of my buddies said the same thing about a mad push at the beginning and then later in the run it was ok. What did you do to correct this and why do you think it was like that. Good job this weekend. A bunch of us are running mod 1/12 at toledo on the 24th. Hope you can make it. Tell your friends.

Paul
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Old 03-11-2002, 06:11 PM   #714
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Can anyone tell me where a good mail order/online company to order the Spashette 2002 Switchblade? Only place I have seen carrying it is Horrizon. Thanks!
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Old 03-13-2002, 06:39 PM   #715
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Hello, everyone!

My appologies for being such a slacker and not posting-alot of things have been going on lately and "me" time is at a premium. I didn't race last weekend and probably won't be for sometime because my real cars' motor is nearing completion and I need to pay for that. Sorry Dave A., I probably won't be racing at the NORRCA Nats, but I'm pretty sure my little brother, Petenis, will be racing. I am not sure if he'll run stock or Mod, but it will definately be 1/12 scale. I will probably be his "pit bitch" for a while until my motor is sitting in my 1/1 scale car. I am so bummed!!! I already miss it. When Duey's closed, I waited for two years for him to find another location... which never happened. Now I have to wait again, but not as long. I will be able to buy better stuff once I return since I don't have the "I am saving for my race motor" excuse anymore. The Petenis is more than capable of carrying the Simons Bros. Racing torch until I can return. We haven't even been back into racing a full year yet, and Petenis started racing 1/12 scale of any kind about 8-9 months and never ceases to impress his older brother with his still-blossoming abilities. He can solidly kick my butt all over the place in Mod, in stock, and in sedans, when we both started up again about 8-9 months ago. I will try to post when I am not trying to kill myself with work. Good luck to everybody who posts here and I will hopefully be seeing some of you at the NORRCA Nats. Keep them race reports coming in, hearing how others do this 1/12 scale deal is fodder for great ideas and ways to get faster.


Keep the shiny side up, fellers!
Dave S.
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Old 03-13-2002, 07:43 PM   #716
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ANYONE?? THANKS!!!!!!!
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Old 03-14-2002, 10:40 AM   #717
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Wilson10,
Try www.kinetixrc.com they have the new Trinity car for only $159.95.
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Old 03-14-2002, 08:39 PM   #718
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Thanks TY!!!! I called them just in time and got the last 2 THANK YOU!!!!!!!!
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Old 03-14-2002, 10:57 PM   #719
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DRAGON SLAYER - only at reflex, i only race onroad tho. are you always at reflex? i know i am
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Old 03-15-2002, 07:44 AM   #720
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Alfred......I raced there when it was Performance.....i'm about 3-1/2 hours away so its hard to get down there.....I did make it to 2 of the Texas state touring car races.

We are having our grand opening race on April 6th. saturday.......we will have the track set up on friday night for practice(new layout)you will be able to practice all night or till you get tired of hearing diffs whining... our track is in Shreveport La......The track is at 1707 Line ave.(if you want to do a search)as soon as the flyer is ready i'll get it on here......we race on Ozite...36' by 60'....sedan w/rubber stock motor.....1/12 with chameleon.......sounds like we may have enough to run a sedan w/foam mod motor......may have a F-1 class also......if anybody is close we'd love to have ya'll......we have transponders.
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