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 04-04-2004, 06:14 PM   #7396
Tech Master
 
dontfeelcold's Avatar
 
Join Date: Aug 2003
Location: Where there's smoke there's a tyre
Posts: 1,722
Trader Rating: 20 (100%+)
Default

Whats BSR?
dontfeelcold is offline   Reply With Quote
Old 04-04-2004, 06:15 PM   #7397
Tech Elite
 
Taz_S's Avatar
 
Join Date: Aug 2001
Location: Santa Rosa CA
Posts: 2,552
Trader Rating: 4 (100%+)
Default

www.bsr-racing.com
__________________
Jake's Performance Hobbies http://www.jphracing.com/
https://www.facebook.com/groups/757500284356171 Facebook Group for Pro 10
Taz_S is offline   Reply With Quote
Old 04-04-2004, 09:55 PM   #7398
Tech Master
 
Join Date: Aug 2001
Location: Australia
Posts: 1,006
Trader Rating: 55 (100%+)
Default

converted the yrx12 to hammer12, and so far it has run great.. dare i say even better.

car went together great..

hope to get a better idea as i run it some more.
tones is offline   Reply With Quote
Old 04-05-2004, 07:47 AM   #7399
Tech Rookie
 
Join Date: Apr 2004
Location: Fort Washington, MD
Posts: 6
Angry Sale!!!!!!!!!

Selling all of my R/C equipment because there is no time due to demands at work and school. If you or someone you know is interested PM me with offer. This would make a nice 12th scale package, and I'll most likely try to sell it that way. The following items are basically brand new (ONLY ONE PRACTICE DAY EARLY FALL 2003):

**Note: All manuals are present. No equipemnt has been "experimented with".

M8 radio (non-backlit) 27 MHz
Airtronics 2 channel receiver with extra set of crystals 27 Mhz (92827)
Keyence Zero Extreme 2002
Airtronics mini servo (94145
3 SMC 1.77(8)12th scale saddle config.
1 Trinity 1.156 12th scale saddle config.
with two extra cells unused.
12L3 Associated 12th scale comp car.
One set of race Jaco and Trinity tires
LRP Comp. Charger
Integy Indi Reactor30 amp d/c
Integy Indi Octane 20 amp equalizer
Bulldog 15 amp power supply
Hudy hex (4) and nut drivers (2) tools for
One new and one used Ascari body
Deans Speed Jig (batter soldering station)
28 – 31 pinion sizes
Monster stock (dyno) motor

Giving away misc.:

Motor brushes and springs
Extra hardware and parts
8 different paint colors
Toe and camber gauges
Jack the Gripper traction compound
Etc.

John Robb
John R is offline   Reply With Quote
Old 04-05-2004, 09:10 AM   #7400
Tech Elite
 
dr_hfuhuhurr's Avatar
 
Join Date: Aug 2003
Location: Westchester, NY
Posts: 4,422
Trader Rating: 69 (100%+)
Default

Dude! There's a FOR SALE forum here specifically for selling...why bother putting it up here other than to tick people off having to read around you...
__________________
"There is a fine line between hobby and mental illness. Which side are you on?"

“Life is hard; it's harder if you're stupid.” - John Wayne
dr_hfuhuhurr is offline   Reply With Quote
Old 04-06-2004, 12:30 AM   #7401
Tech Regular
 
Join Date: Oct 2002
Location: Northern California
Posts: 344
Trader Rating: 17 (100%+)
Send a message via AIM to maximum
Default Thanks Adam Hartzell

Can anybody recommend a good handling body for a 12th scale Rev3 using 4-cells and mod motor for an asphalt track? Thank you in advance.
maximum is offline   Reply With Quote
Old 04-06-2004, 02:38 AM   #7402
Tech Regular
 
Join Date: Oct 2003
Posts: 373
Default

Parma speed 8 & Andy's Mercedes(yokomo MS-1) work well. Hasn't try the Protoform speed 12 on asphalt yet, the weather is still too cold outside.
caveman is offline   Reply With Quote
Old 04-06-2004, 05:05 AM   #7403
Tech Addict
 
sean's Avatar
 
Join Date: Mar 2003
Posts: 702
Default

Quote:
Originally posted by dr_hfuhuhurr
Dude! There's a FOR SALE forum here specifically for selling...why bother putting it up here other than to tick people off having to read around you...
post something on to "for sale"in the morning-that place gets so many new threads that you lucky if your item is still there at lunch.
sean is offline   Reply With Quote
Old 04-06-2004, 05:34 AM   #7404
Tech Master
 
stormperson's Avatar
 
Join Date: Sep 2001
Location: MA
Posts: 1,185
Trader Rating: 1 (100%+)
Send a message via AIM to stormperson
Default

The parma 8 or the yokomo body should be good for asphalt, although I think if you stuck the guerney flap on the speed 12 it should be mint. I was gong to actually try the flap on a speed 8 and see how it went at the Norca nats at TFB raceway in may...
__________________
R/C Excitement Special Projects Coordinator
Kwik | Speedmerchant | Parma PSE | KO Propo
Team Pickles
stormperson is offline   Reply With Quote
Old 04-06-2004, 06:52 AM   #7405
Tech Elite
 
dr_hfuhuhurr's Avatar
 
Join Date: Aug 2003
Location: Westchester, NY
Posts: 4,422
Trader Rating: 69 (100%+)
Default Done for the season?

Anything you guys recommend doing at the end of the season? Other than a general cleaning?
__________________
"There is a fine line between hobby and mental illness. Which side are you on?"

“Life is hard; it's harder if you're stupid.” - John Wayne
dr_hfuhuhurr is offline   Reply With Quote
Old 04-06-2004, 07:54 AM   #7406
Tech Addict
 
Join Date: Mar 2002
Posts: 593
Default Sure

At the end of the carpet season get some pink rears and run on asfault (Like that spelling?).

I can never get enough 12 scalers to run outdoors, they don't want to scratch their chasis.

SO I run 1/10 pan car.

David Root
David Root is offline   Reply With Quote
Old 04-06-2004, 09:14 AM   #7407
Tech Champion
 
rayhuang's Avatar
 
Join Date: Dec 2001
Location: Cleveland Heights, Ohio
Posts: 6,511
Trader Rating: 5 (100%+)
Send a message via AIM to rayhuang
Default Re: Done for the season?

Quote:
Originally posted by dr_hfuhuhurr
Anything you guys recommend doing at the end of the season? Other than a general cleaning?

Prep the car fully for 2004 fall season, oil all the bearings, loosen the diff a bit , then put the body on it and put it on the shelf. Measure all your tires and write what size & compound if the sticker fell off, put all the tires in a black garbage bag and seal it up tight and put it in the basement or somewhere other than the garage. Thats it as far as I am concerned.

Ray
rayhuang is offline   Reply With Quote
Old 04-06-2004, 09:16 AM   #7408
Tech Elite
 
dr_hfuhuhurr's Avatar
 
Join Date: Aug 2003
Location: Westchester, NY
Posts: 4,422
Trader Rating: 69 (100%+)
Default Re: Sure

Quote:
Originally posted by David Root
At the end of the carpet season get some pink rears and run on asfault (Like that spelling?).

I can never get enough 12 scalers to run outdoors, they don't want to scratch their chasis.

SO I run 1/10 pan car.

David Root
Yup...the electronics have already been transferred to a 10L3T...Going to run them at CORCAR this year! Woohoo!
__________________
"There is a fine line between hobby and mental illness. Which side are you on?"

“Life is hard; it's harder if you're stupid.” - John Wayne
dr_hfuhuhurr is offline   Reply With Quote
Old 04-06-2004, 08:48 PM   #7409
Tech Master
 
clinttredway's Avatar
R/C Tech Charter Subscriber
 
Join Date: Jan 2004
Location: Texas
Posts: 1,291
Trader Rating: 3 (80%+)
Send a message via MSN to clinttredway
Default

Here is my rev3 with a freshly painted protoform speed 12..

I am going to take this out for a spin tomorrow.. should be a blast!
Attached Images
File Type: jpg rev3new.jpg (69.7 KB, 175 views)
__________________
Do or Do Not, There Is No Try

Last edited by clinttredway; 04-06-2004 at 10:30 PM.
clinttredway is offline   Reply With Quote
Old 04-07-2004, 05:08 AM   #7410
Tech Addict
 
Join Date: Mar 2002
Posts: 593
Default Looks Good

Pink rears and all!

There is a new electrig go cart track opening up around here, there is talk of us racing our cars on it also. Wouldln't that be something? MOD here we come.
David Root 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: 6 (1 members and 5 guests)
Mach10_shooter
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 09:37 AM.


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

SEO by vBSEO 3.5.0