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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 09-14-2011, 02:21 PM   #36316
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Originally Posted by Infinite 12th View Post
You think that is amazing!!! 2010 IFMAR 1/12th Worlds in Germany. Nato on the pole. A1 Main, fourth corner on the first lap, in to the board, goes to dead last. Watch the rest of the race and then you will understand the term "inhuman" as only a robot or computer could do what he does!!!

http://www.youtube.com/watch?v=oni9iUFwx-s
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Old 09-14-2011, 02:45 PM   #36317
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That was surely an awesome drive...man that makes me even more anxious to get to the IIC now
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Old 09-14-2011, 04:05 PM   #36318
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Could one of you help me with servo selection.

What KO servo are people using for 1/12

Thanks.
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Old 09-14-2011, 04:32 PM   #36319
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Originally Posted by Vector03cobra View Post
Could one of you help me with servo selection.

What KO servo are people using for 1/12

Thanks.
So far as I can tell, KO only makes one mini servo appropriate for racing in a pan car, the PDS 951 High Speed Metal Gear Mini, 108 oz/in, .09 sec. Its quite pricey.
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Old 09-14-2011, 04:56 PM   #36320
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So far as I can tell, KO only makes one mini servo appropriate for racing in a pan car, the PDS 951 High Speed Metal Gear Mini, 108 oz/in, .09 sec. Its quite pricey.
It is quite pricey and I would bet almost everyone who has ever owned one will only use KO since owning it. There are some nice servos out there for less but, the KO 951 is top-of-the-line.
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Old 09-14-2011, 05:18 PM   #36321
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Originally Posted by EVILGRAFX View Post
It is quite pricey and I would bet almost everyone who has ever owned one will only use KO since owning it. There are some nice servos out there for less but, the KO 951 is top-of-the-line.


I used Futaba servos for a while, EVILGRAFX suggested the KO 951 to me at the track, and the only way I'll change to a different servo now is if KO manages to improve on this awesome servo.

It's pricey, but worth every penny.
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Old 09-14-2011, 05:46 PM   #36322
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Originally Posted by EVILGRAFX View Post
It is quite pricey and I would bet almost everyone who has ever owned one will only use KO since owning it. There are some nice servos out there for less but, the KO 951 is top-of-the-line.
I'll be one of the almost everyone's . Not bagging on it but after trying one I'd rather have two 9650's for the price of one KO.
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Old 09-14-2011, 07:32 PM   #36323
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Ok with that said anyone able to put together a short list of good 1/12 scale servos

Thanks for your time and effort guys
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Old 09-14-2011, 07:45 PM   #36324
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I like the Futaba 9602 and the 9650 (with updated metal Gears)
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Old 09-14-2011, 08:13 PM   #36325
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This is a bit of a cross-post. I need to buy some modern ESCs for single cell lipo 1/10th and 1/12th scale pan cars.

I'm hoping to find something that meets the following criteria:

- Can step-up voltage for receiver/servo
- Has adjustable boost stuff, including ability to disable (a disable light would be nice but not necessary)
- No fan would be nice, if it can handle boosted 10.5 (single cell lipo)

What say you?
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Old 09-14-2011, 08:21 PM   #36326
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Originally Posted by Arboleda View Post
This is a bit of a cross-post. I need to buy some modern ESCs for single cell lipo 1/10th and 1/12th scale pan cars.

I'm hoping to find something that meets the following criteria:

- Can step-up voltage for receiver/servo
- Has adjustable boost stuff, including ability to disable (a disable light would be nice but not necessary)
- No fan would be nice, if it can handle boosted 10.5 (single cell lipo)

What say you?
There are quite a few options in this category.
This one is very popular, up-datable, and has no pc interface for tuning, simple setup by 2 buttons.


Quote:
It can be the decisive advantage on the race track.

The technical base line of the new speed control specialist for stock racing was the SXX TC spec, which, when it was introduced in the market took the R/C scene by storm. IFMAR WC title 2008-2009 and numerous other national and international wins underline its leading position worldwide.

Equipped with these successful genes and revolutionary technical advancements, and due to its revised software, perfectly adjusted for the use in combination with stock motors, the new SXX Stock Spec Version 2 with the ADPCmax2 software is the top of the line speed control in its class and will boost stock racing into a new dimension.

The most important updates of the Version 2:
• Improved, tougher specifications
• USB software update on www.LRP.cc
• Dual ADPCmax2 software
• Higher performance!
http://www.lrp.cc/en/products/electr...egler/details/
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Old 09-14-2011, 08:39 PM   #36327
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Thanks!

How does this LRP compare to the Tekin ESCs? Do the Tekins also step-up voltage? If so, what are the pro's and con's between the two? Is anything worth considering besides an LRP or a Tekin?
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Old 09-14-2011, 08:56 PM   #36328
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Originally Posted by Arboleda View Post
Thanks!

How does this LRP compare to the Tekin ESCs? Do the Tekins also step-up voltage? If so, what are the pro's and con's between the two? Is anything worth considering besides an LRP or a Tekin?
I have not tried the LRP but I have seen it run, I dont really see much if any real difference but as with most things in life its who's using the equipment that matters the most. I do run the Tekin RS and you have to have a booster or rec pack to run 1s. Aside from these two you can also consider the Black Diamond(availible thru CRC I think) and the Hobby Wing 1s esc. I have a friend that runs the BD and likes it alot, I think it also needs a booster but not for certain. Have'nt seen the Hobbywing so no coment on its performance. Of course Novak has a 1s esc but again I have'nt tried it so no experience with its performance. Not alot of new info but hope that helps some.
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Old 09-14-2011, 09:36 PM   #36329
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Quote:
Originally Posted by Arboleda View Post
Thanks!

How does this LRP compare to the Tekin ESCs? Do the Tekins also step-up voltage? If so, what are the pro's and con's between the two? Is anything worth considering besides an LRP or a Tekin?
I didn't bring up Tekin, as it did not meet your criteria.
However if you don't mind installing a voltage booster, the Tekin is hard to beat for boosted 1s racing.
You will need the Tekin Hotwire accessory to adjust settings via pc.
There are more options for tuning than the LRP.

The same TQcells booster, and Tekin RS have been in my 13.5 boosted 12R5 for 2 years without any issues.
In that time Tekin have offered numerous FREE firmware updates.
Tekin is still the target for performance/features of every esc manufacture in this category.
Their service, support and track record speak for themselves.
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Old 09-14-2011, 09:41 PM   #36330
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Originally Posted by Crashby View Post
You think that is amazing!!! 2010 IFMAR 1/12th Worlds in Germany. Nato on the pole. A1 Main, fourth corner on the first lap, in to the board, goes to dead last. Watch the rest of the race and then you will understand the term "inhuman" as only a robot or computer could do what he does!!!

http://www.youtube.com/watch?v=oni9iUFwx-s
In my video I think that's actually Noato way ahead in first ...lol

A human is doing it hence to me it's definately human...lol

And I've watched those video's many times since it's a form of practicing when you watch racing

So I humbly term him an amazing toy car driver but definitely human

Maybe you are saying he is channeling aliens or something...lol

I am open to that

We should probably agree to disagree

See you Sunday
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