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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 04-26-2007, 08:36 PM   #25171
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Quote:
Originally Posted by CarlosG.
I did and it made the car loose in the rear on power. The track right now has alot of pollen that did not get washed off with all the rain we have had. The track owner uses trackbite. I blow the the track off when P2 is not around. That is what I have been using since I have alot of theose tires from running the race that David beat my arse in. I just use them to use them. I was just saying that is I was getting out of them. I hate to see good things sit for along time, like tires, and not get used. I especially kringe when I cut them down to a smaller size seeing all that rubber go down the trash can( or shall it be a waste of money).
i know what you mean about wasting tire.i run them bigger for club racing just to have fun. PM me your setup.you shouldnt be loose with the magentas.let me see if i can see any problems.whites should stay a little cleaner but not have as much bite.dont you run the hyperform car?that should have alot of rear traction with the lowered T bar.shoot me the set up,i will PM you all the details of what we run around here once you send it.
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Old 04-26-2007, 08:38 PM   #25172
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Quote:
Originally Posted by trickd122
What gearing does that work out to be?
i run 88/32 with a 1.800 rear tire
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Old 04-26-2007, 09:25 PM   #25173
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I only run the Hyperform on carpet now when I go up to visit Yang and Tim for some carpet racing. I have sent you my setup.
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Old 04-26-2007, 09:37 PM   #25174
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Oh, I forgot that the silver spring was when I ran the whites. The olive spring would make the car push with the whites. I had P2's losi heavy by mistake cause that is what he gave me to try in my tubes by mistake so that is why the car was loose on power.I usually have the ofna 3000wtg in the tubes.
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Old 04-27-2007, 04:39 AM   #25175
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Quote:
Originally Posted by protc3
Adrian and i use the same saucing method so try that and also,DO NOT run white rears or black fronts.the 2x pink front and rear is the way to go.have your track use grape soda because the carbonation in the soda keeps the sugar from crystalizing on the track surface.mix it the same way you are now. the magenta tires will give you more than enough rear traction if the tires are prepped correctly.give the tire prep a try along with the right compound and your car should be planted
Grape soda as in the pre-mixed store bought stuff? I always heard the syrup from grape soda or Dr. Pepper was the best way to go but I can't find those syrups.

I'm not sure how well 2x pink will work on the Darkside car which has a lot more weight on the front tires then most cars being as it has an in-line battery. Pinks always worked well out here in the past but on different parking lots...this one just doesn't seem to like them for me...so Magenta all around? Double pink all around? Magenta front 2x pink rear?
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Old 04-27-2007, 05:11 AM   #25176
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magenta and 2x pink are the same tire.store bought grape soda is what we use.it has a ton of sugar in it.if pinks are better for you in the rear then i would use them.i never did run a car with that much forward weight.it may be better for you like you said.try out the new saucing tips and see if it gets any better buddy.
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Old 04-27-2007, 07:24 AM   #25177
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Quote:
Originally Posted by InspGadgt
I'm not sure how well 2x pink will work on the Darkside car which has a lot more weight on the front tires then most cars being as it has an in-line battery. Pinks always worked well out here in the past but on different parking lots...this one just doesn't seem to like them for me...so Magenta all around? Double pink all around? Magenta front 2x pink rear?
I have found a little firmer tire on the Darkside car works well, so don't leave with out black or purple fronts. Pink rears work here and the prep is similar. However, we do not have the humidity that you have.
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Old 04-27-2007, 10:30 AM   #25178
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how are you guys getting the blacks to work on asphalt.i hated them the 1 time i tried them.the 2x pink was much better
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Old 04-27-2007, 11:02 AM   #25179
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Only a guess, would it be because of all the weight distributed across the front?
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Old 04-27-2007, 11:52 AM   #25180
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Anyone know if AE plans to release a new 1/12th pan car?
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Old 04-27-2007, 01:34 PM   #25181
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Quote:
Originally Posted by protc3
how are you guys getting the blacks to work on asphalt.i hated them the 1 time i tried them.the 2x pink was much better
For me the 2x pink / magenta had too much steering for me. The harder tires helped balance out the car with rear traction. I would say it was due to the darkside car, but I've done the same with my Corally 12mEuro which works very well outside.
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Old 04-27-2007, 03:14 PM   #25182
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protc3... Are you making more kits anytime soon. Or are you holding off until you get that front end project straightened out with irs?

E
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Old 04-27-2007, 04:00 PM   #25183
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Quote:
Originally Posted by Grenade10
For me the 2x pink / magenta had too much steering for me. The harder tires helped balance out the car with rear traction. I would say it was due to the darkside car, but I've done the same with my Corally 12mEuro which works very well outside.
i can see what you mean for the darkside car with the weight placement being different than the standard 1/12th.the 12M though,that car had a wicked push.i tried purples and the car pushed,with double pinks it still pushed but was better.i was never a big fan of the 12M though.i really wished that a local down in my area had a darkside car.i always wondered how the car would react with that layout since the first time they posted pictures.im so used to the coventional layout with all the weight towards the rear.i never did see something like that run
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Old 04-27-2007, 04:04 PM   #25184
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protc3... Are you making more kits anytime soon. Or are you holding off until you get that front end project straightened out with irs?

E
i am still working on the 1/12th kits and filling orders slowly.i have some real crazy jobs that i am working on that are very difficult and time consuming.it has tied me up on and off for a while now along with the rest of the work.i know it is going slow and if i cant get it rolling this coming week i am going to finish it in the evenings after i close.its tough trying to do all of this while keeping the shop rolling.i like to do all the car parts myself to ensure that no one screws up.
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Old 04-27-2007, 04:14 PM   #25185
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Quote:
Originally Posted by protc3
i am still working on the 1/12th kits and filling orders slowly.i have some real crazy jobs that i am working on that are very difficult and time consuming.it has tied me up on and off for a while now along with the rest of the work.i know it is going slow and if i cant get it rolling this coming week i am going to finish it in the evenings after i close.its tough trying to do all of this while keeping the shop rolling.i like to do all the car parts myself to ensure that no one screws up.
Don't you hate when life gets in the way of fun? That's cool. I guess I'll have to wait.

E
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