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 02-15-2005, 07:45 PM   #11056
Tech Addict
 
JohnB's Avatar
R/C Tech Charter Subscriber
 
Join Date: Aug 2002
Location: Oregon City, Or
Posts: 674
Trader Rating: 1 (100%+)
Default

Pink rears are the same. Parma Magenta will be the same as double pink.
JohnB is offline   Reply With Quote
Old 02-15-2005, 07:50 PM   #11057
Tech Master
 
JJ187RC's Avatar
 
Join Date: May 2002
Location: Keller, TX.
Posts: 1,607
Trader Rating: 7 (100%+)
Default

Thanks, John.I appreciate it. That is what I was thinking, but Parma's web site shows a white compound as well that is the same as the pinks. I just wanted to clarify that.
JJ187RC is offline   Reply With Quote
Old 02-15-2005, 08:47 PM   #11058
Tech Fanatic
 
crimson eagle's Avatar
 
Join Date: Jun 2003
Location: Nor Cal
Posts: 841
Send a message via ICQ to crimson eagle
Default

Magenta's have way more grip than double pink even though they have the same shore rating (blacks have the same shore too) the rubber is different.

Chris.
crimson eagle is offline   Reply With Quote
Old 02-15-2005, 09:05 PM   #11059
Tech Master
 
Soviet's Avatar
 
Join Date: May 2004
Location: Littleton, CO - USA
Posts: 1,712
Trader Rating: 2 (100%+)
Default

Quote:
Originally posted by wes
i dont know what you guys are talkign about in mod i run the jr3550 servo and its perfect it centers every time im one of the fastest mod drivers at the track and in stock i run the hitec 225 mg and its perfect for stock im one of the fastest stock drivers i even ran a touring car servo before i could afford a real 12th scale one and their was little to no difference and even better there was more weight in the front which will improve the haldling of your car if i turn down my jr i could run my mod car in stock and be the exact same speed ther difference ins ervo is very little its all preference but you dotn have to have exactly what the pros have its what you can afford.
I'd like to introduce you to someone...

Mr. Period (.)

http://www.thinkgeek.com/tshirts/pennyarcade/6baf/
__________________
"You don't get hurt racing little cars..."

-Me
Soviet is offline   Reply With Quote
Old 02-15-2005, 09:11 PM   #11060
wes
Tech Regular
 
wes's Avatar
 
Join Date: Jan 2004
Location: im pretty much awesome
Posts: 397
Trader Rating: 1 (100%+)
Default

it dosent matter about grammar im stating a point about servos and the way your car is with different ones im not stating my own opinion and experiences to be grammar checked by you ide be glad to see you state your own opinion about running different servos and weight distributions in cars but it dosent seem like you have an imput. nice job though i wear white shirts with no logos looks like you need to speak for yourself rather than having a t shirt do it for you thanks mr puncuation
wes is offline   Reply With Quote
Old 02-15-2005, 09:20 PM   #11061
Tech Elite
 
odpurple's Avatar
 
Join Date: Dec 2002
Location: San Francisco
Posts: 2,187
Default

Quote:
Originally posted by wes
it dosent matter about grammar im stating a point about servos and the way your car is with different ones im not stating my own opinion and experiences to be grammar checked by you ide be glad to see you state your own opinion about running different servos and weight distributions in cars but it dosent seem like you have an imput. nice job though i wear white shirts with no logos looks like you need to speak for yourself rather than having a t shirt do it for you thanks mr puncuation
It would be easier to understand you if you puntuated your posts.
Personally, I don't pay too much attention to posts that are difficult to decipher.
odpurple is offline   Reply With Quote
Old 02-15-2005, 09:31 PM   #11062
Moderator
 
Clegg's Avatar
 
Join Date: Jan 2004
Location: Outside doing things in places... Denver, CO
Posts: 4,602
Trader Rating: 9 (100%+)
Default

When in doubt, just put a ! after every word!

See! it! works! great!

hehe
__________________
Joe Kelly - JK720.net
5280 Raceway |5280raceway.com | 5280 Raceway Facebook
Clegg is offline   Reply With Quote
Old 02-15-2005, 11:45 PM   #11063
Tech Master
 
Soviet's Avatar
 
Join Date: May 2004
Location: Littleton, CO - USA
Posts: 1,712
Trader Rating: 2 (100%+)
Default

Quote:
Originally posted by Clegg
When in doubt, just put a ! after every word!

See! it! works! great!

hehe
And...Mr. Period returns!

http://www.penny-arcade.com/view.php3?date=2004-11-03
__________________
"You don't get hurt racing little cars..."

-Me
Soviet is offline   Reply With Quote
Old 02-16-2005, 12:04 AM   #11064
wes
Tech Regular
 
wes's Avatar
 
Join Date: Jan 2004
Location: im pretty much awesome
Posts: 397
Trader Rating: 1 (100%+)
Default

well soviet when you become one twelth scale world champion or even take into consideration someone elses thoguhts and help i might consider taking sime time out of my day to consider something you might post on here but untill that day comes ................... im sure all those periods can go somewhere in my posts
wes is offline   Reply With Quote
Old 02-16-2005, 12:25 AM   #11065
Tech Master
 
Soviet's Avatar
 
Join Date: May 2004
Location: Littleton, CO - USA
Posts: 1,712
Trader Rating: 2 (100%+)
Default

Quote:
Originally posted by wes
well soviet when you become one twelth scale world champion or even take into consideration someone elses thoguhts and help i might consider taking sime time out of my day to consider something you might post on here but untill that day comes ................... im sure all those periods can go somewhere in my posts
O K
__________________
"You don't get hurt racing little cars..."

-Me
Soviet is offline   Reply With Quote
Old 02-16-2005, 02:09 AM   #11066
Tech Elite
 
odpurple's Avatar
 
Join Date: Dec 2002
Location: San Francisco
Posts: 2,187
Default World 12th Scale Champion

I vote Soviet for world 12th scale champion! And Mr. Period for Co-Champion!!!
I don't know if they can drive, but at least they can spell...
odpurple is offline   Reply With Quote
Old 02-16-2005, 02:17 AM   #11067
Tech Master
 
Soviet's Avatar
 
Join Date: May 2004
Location: Littleton, CO - USA
Posts: 1,712
Trader Rating: 2 (100%+)
Default Re: World 12th Scale Champion

Quote:
Originally posted by odpurple
I vote Soviet for world 12th scale champion! And Mr. Period for Co-Champion!!!
I don't know if they can drive, but at least they can spell...
LOL


Seriously though. I'm VERY happy with my 12th scale. I had my first race with it Saturday and came in 4th in the A-main in 19T class.

Much, MUCH more fun than TCs in my opinion. I dunno...I just love how they scoot across the track...very sharp and blindingly fast.

Honestly, these cars still scare me a bit !
__________________
"You don't get hurt racing little cars..."

-Me
Soviet is offline   Reply With Quote
Old 02-16-2005, 02:24 AM   #11068
Tech Elite
 
odpurple's Avatar
 
Join Date: Dec 2002
Location: San Francisco
Posts: 2,187
Default If they don't

Scare you a bit, it's no fun!!
odpurple is offline   Reply With Quote
Old 02-16-2005, 02:32 AM   #11069
Tech Elite
 
odpurple's Avatar
 
Join Date: Dec 2002
Location: San Francisco
Posts: 2,187
Default Re: Re: World 12th Scale Champion

Quote:
Originally posted by Soviet
LOL


Seriously though. I'm VERY happy with my 12th scale. I had my first race with it Saturday and came in 4th in the A-main in 19T class.

Much, MUCH more fun than TCs in my opinion. I dunno...I just love how they scoot across the track...very sharp and blindingly fast.

Honestly, these cars still scare me a bit !
I agree! what kind of car are you racing? The thing is that they are all good these days. But some are better than others for different types of racing.
odpurple is offline   Reply With Quote
Old 02-16-2005, 03:55 AM   #11070
Tech Addict
 
Thraex's Avatar
 
Join Date: Nov 2004
Posts: 518
Default

At the moment I'm using A TRF shock as A center rear shock, instead of the "normal" Macro.
I think the shock is smoother and more consistant.
Did one of you ever tried it, and what did you think about it?
__________________
Thijs van M[HPI/HB]
Thraex 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: 1 (0 members and 1 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 09:10 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