R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Electric On-Road

    Hide Wikipost
Old 10-28-2016, 12:43 PM   -   Wikipost
R/C Tech Forums Thread Wiki: 1/12 forum
Please read: This is a community-maintained wiki post containing the most important information from this thread. You may edit the Wiki once you have been a member for 90 days and have made 90 posts.
 
Last edit by: fenton06
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:

Print Wikipost

Reply
 
Thread Tools Search this Thread
Old 02-25-2007, 12:07 AM   #23926
Tech Fanatic
 
fast-ho-cars's Avatar
 
Join Date: Sep 2003
Location: it's a dry heat
Posts: 781
Default

i have a Widow, getting parts for any of the last 3 Trinity 1/12ths cars is tough. luckily the Widow has the ability to cross utilize more parts from other 12th cars.

You can use a AE 12L4 antenna mount...direct fit, any 4-40nuts thick or thin as needed, AE 12L4 T-bar carbon brace...of course it won't connect to the antenna mount like the Trinity one does, as for the standoff you may have to shorten a AE 12L4 center post to fit you car.
fast-ho-cars is offline   Reply With Quote
Old 02-25-2007, 12:21 AM   #23927
Tech Adept
 
Join Date: Jan 2002
Location: minnesota-twin cities
Posts: 132
Default

aeforever, I have lots of trinity 12 parts from the last 3 generations of car, but no black widow parts. I loved the switchblade 12( before the widow) but stopped running it for that very reason-no parts support. I am not running currently and what fast-ho said is true, they will cross with alot of associated parts. Have you had any trouble with the lh side pod plate bending? I have gone through three, before I switched cars
Dave S is offline   Reply With Quote
Old 02-25-2007, 05:51 AM   #23928
Tech Champion
 
stiltskin's Avatar
 
Join Date: Jun 2005
Location: Virginia Beach
Posts: 5,298
Trader Rating: 97 (100%+)
Default

Sorry to change the subject, but I have a question concerning 1/12 scale stock. I don't remember the last time I ran stock in a 1/12 scale car so I'm looking for the motor of choice. What seems to be the most popular (roar legal) stock motor for a large carpet track? Mostly flowing but will probably have a pretty good infield.
__________________
Tony Rumple
Team EAM // Gravity RC
stiltskin is offline   Reply With Quote
Old 02-25-2007, 06:08 AM   #23929
Tech Fanatic
 
Join Date: Feb 2004
Posts: 857
Trader Rating: 6 (88%+)
Default

Quote:
Originally Posted by stiltskin
Sorry to change the subject, but I have a question concerning 1/12 scale stock. I don't remember the last time I ran stock in a 1/12 scale car so I'm looking for the motor of choice. What seems to be the most popular (roar legal) stock motor for a large carpet track? Mostly flowing but will probably have a pretty good infield.

Co27
Johnny Carey is online now   Reply With Quote
Old 02-25-2007, 09:33 AM   #23930
Tech Elite
 
RCSteve93's Avatar
 
Join Date: Dec 2005
Location: Long Island, New York
Posts: 4,603
Trader Rating: 11 (100%+)
Default

Quote:
Originally Posted by stiltskin
Sorry to change the subject, but I have a question concerning 1/12 scale stock. I don't remember the last time I ran stock in a 1/12 scale car so I'm looking for the motor of choice. What seems to be the most popular (roar legal) stock motor for a large carpet track? Mostly flowing but will probably have a pretty good infield.
The Team Trinity CO27 is the best motor for pretty much every track. It has alot of RPMs and torque.
__________________
rm -rf /windows
RCSteve93 is offline   Reply With Quote
Old 02-25-2007, 03:33 PM   #23931
Tech Master
 
CarlosG.'s Avatar
 
Join Date: Jul 2004
Location: Falls City,TX
Posts: 1,145
Trader Rating: 12 (100%+)
Send a message via Yahoo to CarlosG.
Default

I know this has been posted, but can someone repost the shore ratings for tires. So I can see were yellow and black fall in respect to the other colors. Thanks to the one that responds to this post.
CarlosG. is offline   Reply With Quote
Old 02-25-2007, 04:46 PM   #23932
Super Moderator
 
Marcos.J's Avatar
R/C Tech Elite Subscriber
 
Join Date: Sep 2003
Location: Semper Fi
Posts: 25,177
Trader Rating: 140 (100%+)
Default

Quote:
Originally Posted by CarlosG.
I know this has been posted, but can someone repost the shore ratings for tires. So I can see were yellow and black fall in respect to the other colors. Thanks to the one that responds to this post.
Marcos.J is offline   Reply With Quote
Old 02-25-2007, 09:30 PM   #23933
Tech Initiate
 
rcracer776's Avatar
 
Join Date: Mar 2006
Location: long island,ny
Posts: 23
Default

anyone got any tuning suggestions for the co27.i just got one for my 1/12 and even in out of the box shape it runs pretty good. always looking for more power.
__________________
looking for good driving school.
rcracer776 is offline   Reply With Quote
Old 02-25-2007, 09:45 PM   #23934
Team EAM
 
EAMotorsports's Avatar
 
Join Date: Dec 2001
Location: Murfreesboro, TN
Posts: 8,862
Trader Rating: 73 (100%+)
Send a message via AIM to EAMotorsports
Default

Quote:
Originally Posted by rcracer776
anyone got any tuning suggestions for the co27.i just got one for my 1/12 and even in out of the box shape it runs pretty good. always looking for more power.
F brushes, .010 off the trailing edge, 2mm hole in face, red/green springs and around a 1.85-1.95 rollout depending on track.

EA
__________________
Contact Us
Team EAM, Our Facebook
Xray | RCAmerica | Hudy | Apex RC | ProSpec America | Killer Concepts | AVID | Futaba.
EAMotorsports is offline   Reply With Quote
Old 02-25-2007, 10:47 PM   #23935
Tech Master
 
David Galdo's Avatar
 
Join Date: Aug 2001
Location: Euless, TX
Posts: 1,652
Trader Rating: 15 (100%+)
Send a message via ICQ to David Galdo Send a message via AIM to David Galdo Send a message via MSN to David Galdo Send a message via Yahoo to David Galdo
Default

I don't see yellow on the chart..... I ran 2-stage double pink and 2-stage yellow this past weekend. Too bad I did not have larger pinions and a smaller spur. The car was stuck.
__________________
Hot Bodies | HPI Racing | HPI TV | Speedzone USA | Team Epic | Trinity | TRC
V-Dezign 4.0
David Galdo is offline   Reply With Quote
Old 02-25-2007, 11:04 PM   #23936
Tech Elite
 
Anthony.L's Avatar
 
Join Date: Oct 2005
Location: Federal Way, WA
Posts: 2,701
Trader Rating: 36 (100%+)
Default

Quote:
Originally Posted by David Galdo
I don't see yellow on the chart..... I ran 2-stage double pink and 2-stage yellow this past weekend. Too bad I did not have larger pinions and a smaller spur. The car was stuck.
Yellow is the same as white pretty much. Jaco 2-stage yellow rear and Jaco 2-stage double pink front was the tire of choice for several at Snowbirds.
Anthony.L is offline   Reply With Quote
Old 02-25-2007, 11:28 PM   #23937
Tech Champion
 
AdrianM's Avatar
 
Join Date: Aug 2001
Location: Tampa, FL
Posts: 5,914
Trader Rating: 4 (100%+)
Default

There are 2 yellow foam tires.

"Old School Yellow" was a really soft compound used ~15 years ago before exotic rubber compounds like Purple and Pink came around.

The current Yellow foam tire is a Jaco 2 Stage with White compound foam over the harder foam core.
__________________
Adrian Martinez
What I run: Schumacher Mi5/Associated RC10R5.1/Associated RC12R5.2/Futaba/HobbyWing/Team EA Motorsports/BSR Racing
Where I run: Florida Indoor R/C Complex/Thunder Racing/Florida On Road State Series
AdrianM is offline   Reply With Quote
Old 02-26-2007, 12:00 AM   #23938
Company Representative
 
Team Kwik's Avatar
R/C Tech Elite Subscriber
 
Join Date: Mar 2006
Posts: 517
Send a message via AIM to Team Kwik Send a message via MSN to Team Kwik
Default

Quote:
Originally Posted by P2
With all the talk about new cars, here is a good site that covers the cars in the 06 world champs!
Enjoy

http://www.mini-zone.com/articles.php?lng=fr&pg=521
Excellent find! There are some great detailed pictures there.

N
__________________
Team Kwik
http://www.teamkwik.com
Team Kwik is offline   Reply With Quote
Old 02-26-2007, 05:28 AM   #23939
Tech Fanatic
 
Join Date: Jan 2004
Location: Colorado, Above The Rest
Posts: 992
Trader Rating: 2 (100%+)
Default

Quote:
Originally Posted by Marcos.J
What mfr's tire line does this represent? This is important to know since a black foam from one is different from another.

-E
__________________
Team BSR
Team Power Push
Protoform Race Bodies
KSKT Racing - #1 in SK Racing Chassis
Darkside Motorsports - "WE ARE WHAT'S NEXT." - www.darksidems.com
THE DARKSIDE is offline   Reply With Quote
Old 02-26-2007, 05:35 AM   #23940
Tech Apprentice
 
Join Date: Feb 2007
Location: Ontario, Canada
Posts: 59
Default What chassis is this

Can someone identify this chassis? It came with CRC 3.2 parts. The cutouts for the rear pod are square unlike the 3.2R and the chassis is thinner than a 3.2.
Attached Thumbnails
1/12 forum-dsc00941.jpg  
Tuner EM is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
New to the forum mig rod Electric Off-Road 1 01-05-2008 05:23 PM
hi i need help and im new to the forum racer4 Rookie Zone 4 01-21-2007 02:37 PM
Why is this forum listed under the On Road Forum? sport10 Onroad Nitro Engine Zone 0 01-11-2007 08:06 AM
Forum Changes... futureal Wisconsin & Illinois Racing 3 10-28-2002 09:26 PM



Currently Active Users Viewing This Thread: 2 (0 members and 2 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off



All times are GMT -7. It is currently 02:48 PM.


Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net

SEO by vBSEO 3.5.0