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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 01-15-2015, 07:14 PM   #41926
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Thank you for the help with the tires so far. I'll add some tires to my shopping list.
Can anyone provide info on bodies? Strakka when grip is crazy high, and TR-12 when grip is super low?
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Old 01-15-2015, 08:00 PM   #41927
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Bodies do have different performance characteristics, but I have never found one to be a deal-breaker. The bodies I have liked the most were CRC Black Market (AKA The Mowhawk due to its center spine) and CRC Black Art Audi R8C. The Black Market was probably a little more stable, while the Audi was a little more aggressive and gave better high-speed steering. The new CRC bodies I have not tried yet but I have one painted up and even though it feels big and chunky I had a hard time getting it to clear all of my electronics and wires, as the back half of the cockpit is very narrow as it smooths out into the rear deck. I will probably be sticking with my old body selection.

To be honest, if your car is fast and well set up and running only 17.5, your body choice is a minor tuning choice, not make-or-break. The Strakka and TR-12 are both good choices, but if you chose one I would go with the Strakka, it looks better than the TR-12 too.
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Old 01-16-2015, 12:48 AM   #41928
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Quote:
Originally Posted by G-rem View Post
Hi guys,

did someone already tried the Orion R10 Pro 1-2S on his pan car? Do you need to use an external booster or a additional LiPo pack? Is the HW V3.1 a better solution?

Thanks in advance,
G-rem
Have been using it for at least 3 seasons in my pan cars. Great one it is.
Lightweight (35g without wires&cap), small, works reliable. If running mod, sometimes temperature cutoff has to be disabled. Have done 1:10 OR 2WD and 4WD with it also.
Remember to disable voltage cutoff when running 1S, it only works for >2S batteries.
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Old 01-16-2015, 11:21 AM   #41929
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Vanity has gotten the better of me and I've decided that I want black wheels...lol (I'm going for a Toyota TS020 GT1 scheme), so I got to looking at the Xceed carbon wheels/tires from Amain. There sure isn't much for info on their compounds, so I'm leary of going that route. TQRC has BSR wheels/tires, so I might go that route instead.
Ordering from TQRC limits my body choice a bit though. Amain has the Parma EE1 which I like the looks of. EA and Chicky have it a good review. It looks a bit more scale/less batmobile compared to the Protoform offerings. Unfortunately TQRC does not carry it.
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Old 01-16-2015, 11:35 AM   #41930
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Quote:
Originally Posted by DBM View Post
Vanity has gotten the better of me and I've decided that I want black wheels...lol (I'm going for a Toyota TS020 GT1 scheme), so I got to looking at the Xceed carbon wheels/tires from Amain. There sure isn't much for info on their compounds, so I'm leary of going that route. TQRC has BSR wheels/tires, so I might go that route instead.
Ordering from TQRC limits my body choice a bit though. Amain has the Parma EE1 which I like the looks of. EA and Chicky have it a good review. It looks a bit more scale/less batmobile compared to the Protoform offerings. Unfortunately TQRC does not carry it.

BSR wheels are excellent (and black).

For bodies, you can't go wrong with the CRC BlackArt Mohawk (http://www.stormerhobbies.com/cgi-bi...=cs&pn=CRC4169)

I personally also like the Protoform AMR
http://www.stormerhobbies.com/cgi-bi...&pn=PFM1611-21

I am anxious to try the new Protoform
http://www.stormerhobbies.com/cgi-bi...&pn=PFM1614-30
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Old 01-16-2015, 11:44 AM   #41931
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Quote:
Originally Posted by DBM View Post
Vanity has gotten the better of me and I've decided that I want black wheels...lol (I'm going for a Toyota TS020 GT1 scheme), so I got to looking at the Xceed carbon wheels/tires from Amain. There sure isn't much for info on their compounds, so I'm leary of going that route. TQRC has BSR wheels/tires, so I might go that route instead.
Ordering from TQRC limits my body choice a bit though. Amain has the Parma EE1 which I like the looks of. EA and Chicky have it a good review. It looks a bit more scale/less batmobile compared to the Protoform offerings. Unfortunately TQRC does not carry it.
I've run the EE1 in 17.5 blinky back to back with both the AMR12 and R8c. Personally, I wouldn't run the EE1 even if they paid me to do so. My new favorite is the Strakka.
While I haven't run the BSR tires, I have run the CRCs and have put the Xceed tires up against them. On my track (old rug, medium grip once a layout is established and grooved in) I'm consistently .2 seconds per lap quicker on the Xceed carpet medium front and carpet medium rear versus the CRC Greene rear with Chrome fronts. I'm waiting on CRC Blu fronts and rears to try. Unless some combination of CRCs significantly improve my lap times I will be sticking with the Xceeds. I run the white rim version and at $7.50 per set versus $13.00 for the CRC's, it's a no brainer. I've also run the Mobgums and really like the feel and durability of those. Tony Block is selling at a tough to beat price, but they really don't fit into your color scheme.
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Old 01-16-2015, 12:01 PM   #41932
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Quote:
Originally Posted by BadSign View Post
You can use a HW Justock in 1S without a booster
I wouldn't. It will work but check the servo speed after six minutes. The ones I've seen would not keep up with a snail.

They are great with a booster or receiver pack - low cost, excellent performance and good quality. But run with only a 1S pack - not a good choice IME. HTH
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Old 01-16-2015, 01:07 PM   #41933
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Quote:
Originally Posted by dr_hfuhuhurr View Post
BSR wheels are excellent (and black).

For bodies, you can't go wrong with the CRC BlackArt Mohawk (http://www.stormerhobbies.com/cgi-bi...=cs&pn=CRC4169)

I personally also like the Protoform AMR
http://www.stormerhobbies.com/cgi-bi...&pn=PFM1611-21

I am anxious to try the new Protoform
http://www.stormerhobbies.com/cgi-bi...&pn=PFM1614-30
The Mohawk is kind of cool. I would consider running that one on looks alone.
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Old 01-16-2015, 03:10 PM   #41934
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Originally Posted by biz77 View Post
I've run the EE1 in 17.5 blinky back to back with both the AMR12 and R8c. Personally, I wouldn't run the EE1 even if they paid me to do so. My new favorite is the Strakka.
While I haven't run the BSR tires, I have run the CRCs and have put the Xceed tires up against them. On my track (old rug, medium grip once a layout is established and grooved in) I'm consistently .2 seconds per lap quicker on the Xceed carpet medium front and carpet medium rear versus the CRC Greene rear with Chrome fronts. I'm waiting on CRC Blu fronts and rears to try. Unless some combination of CRCs significantly improve my lap times I will be sticking with the Xceeds. I run the white rim version and at $7.50 per set versus $13.00 for the CRC's, it's a no brainer. I've also run the Mobgums and really like the feel and durability of those. Tony Block is selling at a tough to beat price, but they really don't fit into your color scheme.
The foam is the same for BSR/CRC/Jaco/Pro One since BSR is the OEM. The only difference is the rim. For most of the folks in the midwest we're running one of the BSR brands especially Blues and Double Blues in the front and Green or Blues in the rear. The new foam wears uber well and the tires just stay more consistent throughout the run so you're not adjusting your driving throughout the run.
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Old 01-16-2015, 10:30 PM   #41935
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Quote:
Originally Posted by biz77 View Post
I've run the EE1 in 17.5 blinky back to back with both the AMR12 and R8c. Personally, I wouldn't run the EE1 even if they paid me to do so. My new favorite is the Strakka.
While I haven't run the BSR tires, I have run the CRCs and have put the Xceed tires up against them. On my track (old rug, medium grip once a layout is established and grooved in) I'm consistently .2 seconds per lap quicker on the Xceed carpet medium front and carpet medium rear versus the CRC Greene rear with Chrome fronts. I'm waiting on CRC Blu fronts and rears to try. Unless some combination of CRCs significantly improve my lap times I will be sticking with the Xceeds. I run the white rim version and at $7.50 per set versus $13.00 for the CRC's, it's a no brainer. I've also run the Mobgums and really like the feel and durability of those. Tony Block is selling at a tough to beat price, but they really don't fit into your color scheme.
I added the Xceed carpet mediums to my cart, removed the EE1 body, and added the Strakka. Thanks for your help! TQRC is out of Mohawk bodies, unfortunately. They are also out of the TC body that I use...doh!
A club member has a lipo for me that was only used at one event, and another member is selling me a micro rx. Now I just need to track down a servo. I kinda like the Airtronics 94761Z since it is smaller than other 12th scale servos....it can be mounted up front to make more room for electronics since I'd like the option to mount the lipo longitudinally.

I made a new upper pod plate from some 2mm CF that I had left over from a combat robotics project. Since it is thinner than the broken 2.5mm plate, I added in some extra material for added strength.
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Old 01-17-2015, 04:49 PM   #41936
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I'm seriously considering trying out the Xenon front end on my good old CEFX car. Just wondering if anyone here in the states has had good luck buying straight from them? The price isn't too bad for everything and it is enough to qualify for free shipping.
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Old 01-17-2015, 06:57 PM   #41937
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I'm seriously considering trying out the Xenon front end on my good old CEFX car. Just wondering if anyone here in the states has had good luck buying straight from them? The price isn't too bad for everything and it is enough to qualify for free shipping.
Xenon is wonderful to order from! Any time I have ordered anything it's been about a week till I get it and I am in Wisconsin.

Don't hesitate at all to order from them.
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Old 01-17-2015, 07:19 PM   #41938
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I am building a 12th scale oval using CRC's Razor, what is a good servo to use?
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Old 01-18-2015, 12:06 AM   #41939
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Can anyone tell me the difference between the "xceed ita" and "xceed pro" tires?
Thanks in advance!
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Old 01-18-2015, 07:03 AM   #41940
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Default combo.

Hope someone can take advantage of this combination.
They were awesome for me
Motor sale with 1 cell Lipo
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