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 09-22-2011, 10:10 PM   #36466
Tech Elite
 
CypressMidWest's Avatar
 
Join Date: May 2003
Location: Central Ohio
Posts: 4,603
Trader Rating: 1 (100%+)
Default

Quote:
Originally Posted by liljohn1064 View Post
You can't go wrong with the CRC Gen XL. They have excellent parts support and their racers are here in the forum all the time.
Truer words have never been entered on this site. All the current 12th scale cars are competitive, but service after the sale speaks volumes. As a CRC team driver, I can tell you that we have THE best team in the industry, and also one of the most approachable. Parts support for our cars is NEVER an issue, as you can always order from CRC's website, and the team is always willing to answer any questions you may have. LMK if I can help you out in any way......
__________________
Team CRC, Access Race Place, US Indoor Champs, CD SUPERPRO, RK Designs, Cypress, Founder and lead instructor of the Ian Ruggles Negative Reinforcement Driver Training Program, enroll now.....
CypressMidWest is offline   Reply With Quote
Old 09-22-2011, 10:15 PM   #36467
Tech Elite
 
DesertRat's Avatar
R/C Tech Elite Subscriber
 
Join Date: Mar 2011
Location: Sniffin the 'Sauce Fumes
Posts: 2,377
Trader Rating: 1 (100%+)
Default

My only complaint about CRC is their kits, relevant parts, and 1/12 bodies always seem to be on backorder.
__________________
I race toy cars for fun. If I need to explain, you'll never understand.
If everything is under control... go faster.
WTB: Carpet racing in Arizona.
It is obvious and intuitive to the most casual of observers that RC racing is better than golf.
DesertRat is online now   Reply With Quote
Old 09-22-2011, 10:16 PM   #36468
Tech Fanatic
 
Infinite 12th's Avatar
 
Join Date: Aug 2011
Location: California
Posts: 877
Trader Rating: 3 (100%+)
Default

Quote:
Originally Posted by CypressMidWest View Post
Truer words have never been entered on this site. All the current 12th scale cars are competitive, but service after the sale speaks volumes. As a CRC team driver, I can tell you that we have THE best team in the industry, and also one of the most approachable. Parts support for our cars is NEVER an issue, as you can always order from CRC's website, and the team is always willing to answer any questions you may have. LMK if I can help you out in any way......
Nothing better than a team that is not only approachable but sharing in their wisdom
Infinite 12th is offline   Reply With Quote
Old 09-22-2011, 10:22 PM   #36469
Tech Elite
 
CypressMidWest's Avatar
 
Join Date: May 2003
Location: Central Ohio
Posts: 4,603
Trader Rating: 1 (100%+)
Default

Quote:
Originally Posted by DesertRat View Post
My only complaint about CRC is their kits, relevant parts, and 1/12 bodies always seem to be on backorder.
During the Summer months that's sometimes true. During Carpet season there's rarely a time when anything is unavailable.
__________________
Team CRC, Access Race Place, US Indoor Champs, CD SUPERPRO, RK Designs, Cypress, Founder and lead instructor of the Ian Ruggles Negative Reinforcement Driver Training Program, enroll now.....
CypressMidWest is offline   Reply With Quote
Old 09-22-2011, 10:24 PM   #36470
Tech Elite
 
CypressMidWest's Avatar
 
Join Date: May 2003
Location: Central Ohio
Posts: 4,603
Trader Rating: 1 (100%+)
Default

Quote:
Originally Posted by Infinite 12th View Post
Nothing better than a team that is not only approachable but sharing in their wisdom
Some of us, while approachable, share more wisdom than we should at times

I'm probably one of the most opinionated on the team.........
__________________
Team CRC, Access Race Place, US Indoor Champs, CD SUPERPRO, RK Designs, Cypress, Founder and lead instructor of the Ian Ruggles Negative Reinforcement Driver Training Program, enroll now.....
CypressMidWest is offline   Reply With Quote
Old 09-22-2011, 10:26 PM   #36471
Tech Fanatic
 
Infinite 12th's Avatar
 
Join Date: Aug 2011
Location: California
Posts: 877
Trader Rating: 3 (100%+)
Default

Quote:
Originally Posted by CypressMidWest View Post
Some of us, while approachable, share more wisdom than we should at times

I'm probably one of the most opinionated on the team.........
I am also guilty of being too enthusiastic

I just like to see people having fun
Infinite 12th is offline   Reply With Quote
Old 09-22-2011, 11:01 PM   #36472
Tech Master
 
JustWill75's Avatar
 
Join Date: Aug 2008
Location: DOUGLASVILLE GA.
Posts: 1,755
Send a message via AIM to JustWill75
Default

I'm in love with my Gen XL and my wife knows it.
__________________
TEAM ASSOCIATED // REEDY POWER // BLAST RC
JustWill75 is offline   Reply With Quote
Old 09-23-2011, 09:12 AM   #36473
Tech Regular
 
Satish's Avatar
 
Join Date: Jan 2007
Location: Ottawa. ON
Posts: 496
Trader Rating: 7 (100%+)
Default

Hello,

I was wondering if anyone has ever used this receiver pack

Trinity TEP2006 220mAh Li-Fe Receiver Pack 6.6 Volts

Do you like it, how often do you need to charge it running 17.5 w/boost or 10.5 w/boost

How would you charge this? I have a li-fe setting on my Hyperion but not sure what settings to use.

thanks

satish
Satish is offline   Reply With Quote
Old 09-23-2011, 09:34 AM   #36474
Tech Elite
 
Join Date: May 2003
Location: Northern & Central Illinois
Posts: 4,337
Trader Rating: 1 (100%+)
Default

Quote:
Originally Posted by Satish View Post
Hello,

I was wondering if anyone has ever used this receiver pack

Trinity TEP2006 220mAh Li-Fe Receiver Pack 6.6 Volts

Do you like it, how often do you need to charge it running 17.5 w/boost or 10.5 w/boost

How would you charge this? I have a li-fe setting on my Hyperion but not sure what settings to use.

thanks

satish
It works great but the switch is a bit cheesy and the solder tabs are fragile.

It's a 220 mah LiFe pack, charge it at .2amps for a 2S LiFe pack.

I use these in my 1/12 17.5 open boost and WGT 13.5 open boost and usually put 90 mah back in the WGT after a 5 minute heat and 110 mah in the 1/12 after a 8 minute heat.
AreCee is offline   Reply With Quote
Old 09-23-2011, 09:44 AM   #36475
Tech Master
 
Join Date: Nov 2006
Location: New Bern, N.C.
Posts: 1,176
Trader Rating: 3 (100%+)
Default

Quote:
Originally Posted by CypressMidWest View Post
Some of us, while approachable, share more wisdom than we should at times

I'm probably one of the most opinionated on the team.........
The guy who's stepped up to take on the heavy work of organizing, running, and keeping the long tradition of the US Indoor Championship alive has surely earned the right to be a little opinionated at times. When one holds the microphone, well, that is the voice that is heard. Thankfully it is a soothing, mellow, velvety voice with dulcid tone.
vafactor is offline   Reply With Quote
Old 09-23-2011, 11:09 AM   #36476
Tech Champion
 
RedBullFiXX's Avatar
R/C Tech Elite Subscriber
 
Join Date: Mar 2003
Location: Intergalactic Planetary
Posts: 6,539
Trader Rating: 34 (100%+)
Default

Quote:
Originally Posted by CypressMidWest View Post
Some of us, while approachable, share more wisdom than we should at times

I'm probably one of the most opinionated on the team.........
Quote:
Originally Posted by vafactor View Post
The guy who's stepped up to take on the heavy work of organizing, running, and keeping the long tradition of the US Indoor Championship alive has surely earned the right to be a little opinionated at times. When one holds the microphone, well, that is the voice that is heard. Thankfully it is a soothing, mellow, velvety voice with dulcid tone.
__________________
--> 12th scale Information Source <--

"Men do not quit playing because they grow old; they grow old because they quit playing."
― Oliver Wendell Holmes Jr.
RedBullFiXX is offline   Reply With Quote
Old 09-23-2011, 12:33 PM   #36477
Tech Addict
 
Join Date: Oct 2008
Posts: 719
Trader Rating: 30 (94%+)
Default

Too lazy to look around, and I know one of you guys can answer me! I have the option of using either a LiFe or LiPo with my 12th scale as a booster. Servo is a S9650, RX is a Spek. SR3100, and the ESC is a Tekin RS. If possible I'd like to use the LiPo because it's smaller, but will that fry the servo? I've never done 7.4 through a mini servo before. Help me out and let me know if it will handle the voltage! (I want real world feedback, don't quote me the manufacturers specs please )
Rocky8333 is offline   Reply With Quote
Old 09-23-2011, 01:21 PM   #36478
Tech Elite
 
DesertRat's Avatar
R/C Tech Elite Subscriber
 
Join Date: Mar 2011
Location: Sniffin the 'Sauce Fumes
Posts: 2,377
Trader Rating: 1 (100%+)
Default

Quote:
Originally Posted by Rocky8333 View Post
Too lazy to look around, and I know one of you guys can answer me! I have the option of using either a LiFe or LiPo with my 12th scale as a booster. Servo is a S9650, RX is a Spek. SR3100, and the ESC is a Tekin RS. If possible I'd like to use the LiPo because it's smaller, but will that fry the servo? I've never done 7.4 through a mini servo before. Help me out and let me know if it will handle the voltage! (I want real world feedback, don't quote me the manufacturers specs please )
It wont fry your servo, I have seen several people use tiny LiPo's successfully as receiver packs without incident.**

**This is an unofficial statement, not to be used as exclusive or superseding reference material for any actions involving toy car racing, potentially volatile batteries, expensive electronics, or humans. Opinions expressed are not necessarily the opinions of management and are only a reflection of personal experience, as a result of these conditions and terms of service this these half-solicited pieces of advice probably should not be read, viewed, or taken seriously by anybody. Do not view this material in the presence of persons under 18 years of age or those who do not wish to view the material.

**VOID WHERE PROHIBITED**

__________________
I race toy cars for fun. If I need to explain, you'll never understand.
If everything is under control... go faster.
WTB: Carpet racing in Arizona.
It is obvious and intuitive to the most casual of observers that RC racing is better than golf.
DesertRat is online now   Reply With Quote
Old 09-23-2011, 02:41 PM   #36479
Tech Addict
 
JamesHealey's Avatar
 
Join Date: Jul 2011
Location: United Kingdom
Posts: 556
Trader Rating: 1 (100%+)
Default

If i wanted to get into 12th scale as a beginner who has a bunch of 7.2v nimh six cell packs and brushed esc is there a car i could get to fit this gear before i went to 3.7v lipo and brushless at a later date?
JamesHealey is offline   Reply With Quote
Old 09-23-2011, 05:10 PM   #36480
Tech Adept
 
Join Date: Jun 2011
Posts: 116
Default

About the subject of 1S speedo, one question

I only have 2s esc at hand.

I try to wire only one of the two saddles and the ESC worked, so was the receiver and servo. Of course the ESC has to be set without a cell limit set
as 3.0V per cell so 6.0v by design as a 2S ESC.

Using a receiver lipo (or a booster), I thought I could run 5-8 mn without hitting the cell ceiling (4.2v to 3.5v I guessed, about the same amount of mA
vs time as my 2wd offroad with 2S and 7.5)

The cell is 6000mA/60C, motor 10.5 non boosted

Sounds about right or big no-no ?
mojo tom 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 06:55 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