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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 12-15-2006, 02:35 AM   #22501
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Cool Scott...mine should be here the week after next...and if all goes well it will be a truely dark Darkside

Last edited by InspGadgt; 12-15-2006 at 04:17 PM.
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Old 12-15-2006, 05:40 AM   #22502
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Quote:
Originally Posted by Scottrik
Just received MY Darkside Mx2 yesterday. WOW!! Very nice piece, excellent communication and service. I wish I could have it built and tested before the big race in Minot this weekend, but I'll have to save it's debut for our Mini 2-day in early January.

Quote:
Originally Posted by Bob-Stormer
Build it in the car on the way over. Don't be a sissy.
Uh...ummmm...perhaps I failed to mention I'm the driver to Minot...

Bummer news though. Flights were cancelled out of Seattle last night, so no Brian "Slapmaster" Bodine. Was looking forward to an interesting ride, now it'll just be boring ol' Scottrik, Ricky Racer and JP...

See ya there!!

Scottrik
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Old 12-15-2006, 06:40 AM   #22503
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Quote:
Originally Posted by InspGadgt
Cool Scott...mine should be here next week...and if all goes well it will be a truely dark Darkside
I beleive two local racers have purchased the last "Shiny" Mx2's. One is sitting on my work bench getting ready for next week!!

So I beleive you will get your wish of a Dark, Darkside!!
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Old 12-15-2006, 08:44 AM   #22504
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Quote:
Originally Posted by Grenade10
I beleive two local racers have purchased the last "Shiny" Mx2's. One is sitting on my work bench getting ready for next week!!

So I beleive you will get your wish of a Dark, Darkside!!
Yep, from now on the Mx2 chassis kits will only be available in the black carbon fiber. Silver cabon fiber replacement parts will continue to be available for those who have purchased that car however.

Thanks for the support guys, The performance of our products and our committment to customer service will speak for itself.
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Old 12-15-2006, 08:45 AM   #22505
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Quote:
Originally Posted by Larry Brown
Ummm, this is rather crass and unprofessional coming from a competitor.
Thanks for the support guys, The performance of our products and our committment to customer service will always speak for itself. I appreciate your comments, It pushes me to work harder.

Eric Dimmick
Darkside Motorsports
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Last edited by THE DARKSIDE; 12-15-2006 at 08:59 AM.
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Old 12-15-2006, 09:01 AM   #22506
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Quote:
Originally Posted by THE DARKSIDE
Thanks for the support guys, The performance of our products and our committment to customer service will always speak for itself.
I appreciate your comments, It pushes me to work harder.

Eric Dimmick
Darkside Motorsports
The Mx2 was AWESOME last weekend at the eXpress North/South Shootout. It handled like a dream. When I wasn't shaking from making it to the show
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Old 12-15-2006, 01:24 PM   #22507
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I raced my Rev4 for the first time last weekend. Up til then I ran it about 4-5 times getting the setup dialed in. I had it running pretty good and then last weekend it went to crap. I was running Jaco purple/grays, Rear end was all over the place. I finally switched to pink rears and the car was pretty good. Any ideas why the gray just went to crap on me. I use Paragon and tryed various doping scenerios. I also noticed that the tires where very sticky/gooy when I took it off the track. I just bought 8 sets of purple/gray, so I would really like to get them to work. Oh yeah, running 19t.
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Old 12-15-2006, 03:22 PM   #22508
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Quote:
Originally Posted by THE DARKSIDE
Thanks for the support guys, The performance of our products and our committment to customer service will always speak for itself. I appreciate your comments, It pushes me to work harder.

Eric Dimmick
Darkside Motorsports
I HAD respect for you when you decided to break the mold and try something different. You pushed forward in the midst of people saying that the design wouldn't work.

Your actions on this forum in the various threads that you have posted in, you have made me decide that I will NEVER purchase any of your products. Your way of doing buisness and promoting your company is unethical and absolutely sucks.
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Old 12-15-2006, 03:32 PM   #22509
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Wow...that was a bit uncalled for. Darkside is a small company promoting itself the best it can. They have been pretty active here as far as telling people about their car but they are not bashing others cars.
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Old 12-15-2006, 03:37 PM   #22510
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Quote:
Originally Posted by AdrianM
...but they are not bashing others cars.
Actually, you are wrong. He did the equivalent of going into a Schumacher thread and telling people to buy Xrays
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Old 12-15-2006, 03:42 PM   #22511
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Quote:
Originally Posted by Bob-Stormer
Build it in the car on the way over. Don't be a sissy.





i remember passing some guys to a big race. passenger was building his sedan in the front seat.
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Old 12-15-2006, 03:52 PM   #22512
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Quote:
Originally Posted by Rob Phillips
I raced my Rev4 for the first time last weekend. Up til then I ran it about 4-5 times getting the setup dialed in. I had it running pretty good and then last weekend it went to crap. I was running Jaco purple/grays, Rear end was all over the place. I finally switched to pink rears and the car was pretty good. Any ideas why the gray just went to crap on me. I use Paragon and tryed various doping scenerios. I also noticed that the tires where very sticky/gooy when I took it off the track. I just bought 8 sets of purple/gray, so I would really like to get them to work. Oh yeah, running 19t.



I haven't been able to get greys to work in 19t for a long time. either they glaze or fuzz up depending on the track.sometimes you'lll have so much wheelspin it burns the compound off. if you have a ton of them, try a softer front. sometimes the grip comes up in the purple too much. they don't wear much, so the traction just builds up. it makes the car feel edgy and loose the rear in the corners.

were the purples sticky too?
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Old 12-15-2006, 04:23 PM   #22513
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This Multiplex Servo Mini Polo Digi 4 servo has all the right numbers on paper to be an excellent 1/12th servo:
Digital, metal gears, single ball bearing, lightweight 0.77oz, 49oz-in torque, 0.08 seconds at 6V, 1.1" x 0.5" x 1.3".

Does anyone have any experience with this servo? It does appear that Tower's web site is wrong about dual ball bearings. I think this is the official web site for the servo, and it says single bearing.
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Old 12-15-2006, 04:40 PM   #22514
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Quote:
Originally Posted by smojoe
Actually, you are wrong. He did the equivalent of going into a Schumacher thread and telling people to buy Xrays
actually....this thread is not specific to any company, it is titled "12 forum". there are threads specific to 12th cars and they tend to fall back after awhile.

i don't see where DS actually told anyone to buy his cars. DS posts are on par with posts from other 12th car companies or soon to be. such as BMI, PRC, OD12, Slapmaster, CRC......no need to go on.
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Old 12-15-2006, 04:53 PM   #22515
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Quote:
Originally Posted by fast-ho-cars
actually....this thread is not specific to any company, it is titled "12 forum". there are threads specific to 12th cars and they tend to fall back after awhile.

i don't see where DS actually told anyone to buy his cars. DS posts are on par with posts from other 12th car companies or soon to be. such as BMI, PRC, OD12, Slapmaster, CRC......no need to go on.
speedmerchant rev.4 thread, 'nuff said
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