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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 03-26-2002, 06:36 PM   #781
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Hey guys how's things going? Just got in about 4hrs ago from Sacramento. Nat's were a blast. Track was huge and fast with the layout being easy to drive but hard to drive fast and it also had some bumps in key places that could get the rear ends loose if not careful. Cyrul won but he was really pushed by Baker, Blackstock, Dumas and Kinwald as they really put on a great show. Dave Lee won 12th Master with a "masterful" performance, hehehe, with Tom Espo getting second and Rick Worth taking third. Espo and Rick are hometown guys and Rick ran SMC HV's with Tom running Trinity SMH's and Lee running HV's but I'm not sure whose. TJ Bradley ran SMC HV's I think and won 12th Stock with a little controversy but I know this guy a some and he is a class act on the track, now after hours in the bar I don't know LOL!!! Tossilini, Paul, and Dumas are all class acts and they really battled hard. First Paul would put an awesome pass on Chris and then I would do the same to Paul and then Dumas got in there. There was a little bumping and nudging at times and the outcome seemed to keep going down to the wire. When the dust settled Chris got the win with Dumas second I believe and Paul third in TC Mod. Sorry that I don't know how TC Stock turned out as far as the action goes. As for me I had a great time but I lost a lap in the last minute in each of the last 3 qualifiers. The first qualifier was a wash because we (team integy) tried an 8 turn and according to Fabulous Baker "...you dumped with like 2min left dave, hehehehe". It was honestly a good laugh the two of us had and then he really helped me out by telling me what motor/gear/tire size he was running (10dbl, 28/104 @ 1.90" rears) and team Integy was off to the races from there with some further help from Paul Leimux, Jim Dieter, and Ken Jones of BBR fame, a big thanks to them all as well as Rick, Blackstock for advise and RD. My 2nd and 4th qualifiers were best with good 39lap paces but the last minute dump dropped them both down to 38's but that's part of the game. Arthur and Pat of Integy really helped a lot and I thank them again for their support up to and at this race. In the main my buddy Fernando got the jump on me at the start and ran up my butt full tilt but it was all good. I just wasn't fast enough off the line, my bad. Only problem was that I was left on the grid facing backwards but everyone avoided me so I did a U-turn and chased everyone down for 4min and got back into fourth place about 3 turns from the leaders and that's when the real damage appeared. My motor had been worked loose from the shunt at the start and my main was over as my car coasted to a stop. Still had ton's of fun though and I told Fernando that I wan't him to remove that blasted on-off switch of a GM V12 speedo! LOL! Then there was the big pizza party and BEER! Hats off to the Stockton crew. I thought that they were going to make a local club race out of a national event but instead they made a national event the most fun since Minnreg! Good job guys! As far as the US Triple Crown Series this was the fifth and final race of the season for it and it was a hum dinger with Dumas possibly winning the TC Mod crown. 12th Mod was already history with Josh winning Oktoberfast, Cleveland, and January Jam so now it's who is second and third. TC Stock and 12th stock should be heated and we'll know soon who won. The schedule for next years Triple Crown is pretty much set already and we're working hard to get the rest of last years trophies out. So what did you guys do over the weekend?
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Old 03-26-2002, 06:44 PM   #782
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oh boy slight mistake: since I don't race TC yet I wasn't putting any passes on Paul it was Chris that would come back with a pass, heheheh. I meant to type "he" as in Chris and not "I" in there.

Petenis- HuH? It's cool dude I didn't take offence to the "old" joke. Hopefully I will be up there for the NORRCA Nats. BTW when are they? hehehe
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Old 03-26-2002, 06:47 PM   #783
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YEA!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!! Dave is back!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!Oh I missed dave. I heard that Cyrul was completely off the track in the start of the first A and he came back passed everyone all over again and took the win Damn he is good. Anywho, tragedy struck yesterday, my car skipped off of a crease in our carpet hit a dot at WIDEOPENTHROTTLE and smashed(literally) into the wall at the end of the straight. So, it appears that I will be ordering a new kit and starting over. Sucks for me but I guess that will teach me to run 7-turns
IKE
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Old 03-26-2002, 07:37 PM   #784
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Whaaaaa, man you and that gas car crazy need for speed, hehehehe. Just sent you an e-m bro. Yeah until the third qualifier I think Cyrul was the only one to go a slow 41 lapper with everyone else on 39/40's. You might want to try one of two things with the guys up there: Either run together and the stocks just move over slightly and give some room running their own race like IMSA/WSC does with different classes running at the same time. You can also run back and forth on a set schedule between all mod and all stock giving everyone a chance to run what they like. I would also probably put a motor limit in mod to help them out something like 10 or 9 turns. Actually another idea may be for the stock guys to run 19turns which are close to stocks really and use much of the same tuning tricks but would help on the driving bit. I think the most important thing is that you got that thing going again. Hopefully people are running it because of the close racing they can have with another racer or two or three.
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Old 03-26-2002, 07:40 PM   #785
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Dave, thanks for mentioning me in your post.

Donuts, Cyrul was punted off the track and under the drivers stand by Baker coming off the sweeper in the first lap of the first main. They marshalled him efficiently, but Josh was 10th. He drove through the field and was around 5th or 4th with 2 minutes to go, or so. Then the Associated team messed up, every body crashed and Josh was back in the lead.

I also want to mention something about the last main when Josh didn't participate. Baker ran out front for about 2.5 to 3 minutes with Mike Lufaso on his tail. The Fabulous one was holding the pace down. They were running 12.0's when they run 11.6 and 11.7 in other heats. Kinwald poured it on and caught them. Mike saw him coming and past Barry down the straight and into the sweeper, but he didn't make it. Kinwald blasted him in the sweeper, sending Mike back into the pack. He eventually went out when a E clip came off his right front and the tire came off the car. Kinwald was warned by the race officials for rough driving and he came off the track for a couple of laps. I think he said some things to the officials. Barry took back the lead at that point and lead Mike Dumas to the end. Kinwald re-entered the track and waited for Barry. He held Barry up for the last minute, but Barry was still able to keep his lead. After passing the start finish line, Kinwald took a couple of shots at Barry's car, but Barry dodged him. You can take it as you want, but I think ROAR messed up for not calling Kinwald off the track while driving in front of Barry. He could have cost Barry the heat by running that close. Being a lap or two down, he should have let them go and just drove along to the finish. End of story (unless there are questions).
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Old 03-26-2002, 07:55 PM   #786
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Dave,
I think that between me and a few other guys we should be able to get a mod class going. I would like to put a 10turn limit on the class like we have in TC so that batts arent such an issue. I'll get that "package" out to you ASAP. I cant thank you enough.
IKE
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Old 03-26-2002, 11:02 PM   #787
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Hi,


Has anyone heard anything else about how darnold did( other than what's already on here)? I am just curious.

seeyabye!
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Old 03-26-2002, 11:04 PM   #788
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Sorry,
I guess I should actually READ before I post something.

I am mental

seeyabye!!
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Old 03-27-2002, 07:39 AM   #789
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FoamDonuts: i hope you guy get off the ground and good luck with starting a mod class.
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Old 03-27-2002, 11:11 PM   #790
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Petenis- Looks like i will be seeing you in a few weeks for the Norrca nats at mhw. Now if we could only get Foams to come to this race since he missed the nat's. What do you say foams?
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Old 03-27-2002, 11:20 PM   #791
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man!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!: mad: sometimes I hate my work life. I will see what I can do. Where is it at? and when?
IKE
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Old 03-28-2002, 12:09 AM   #792
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Foams= It's in Minnesota and you can find out more at twincityhobby.com. The dates are Open Practice starting at 9am on Thursday April 18 and Qualifying starts that Friday the 20th and Mains are Sunday April 22. It's going to be a blast, this is the same track/crew that holds the first race of the US. Triple Crown known as Oktoberfast and the track is dynamite so if you can make it you won't be sorry. You can even register over the phone I believe. Where's Petenis at????? Hope he's ok.
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Old 03-29-2002, 08:17 AM   #793
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Yep Im OK! Its not MHR any more, a whole bnch of racers got together and bought doug out, and renamed the place twincity hobby and raceway. So now its referred to as TCHR. But no need to be up to speed with things, I never am. I'll know what your talking about. I know I race there every week and everything, but does anyone know the cut off date for entries for the norrcas? I really hope to see darnold and foams there, so they can burn little carpet doughnuts around my car.
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Old 03-29-2002, 01:31 PM   #794
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well I dont know about running circles around anyone but I will try and get there. Gotta get a new kit first. I barely have enough time to get on here lately. It should ease up soon and I can settle back into my cell phone pager schedule. Looks like I already missed the deadline for hotel reservations. Now, are NORRCA races run pretty much the same as ROAR? Is there a motor limit and do sedans run on FOAM or flubber tires?
IKE
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Old 03-30-2002, 03:00 AM   #795
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Onroad Electric and Nitro "State Championships" May 4th @ Small Cars Unlimited.

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