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 11-06-2014, 11:08 AM   #41611
Tech Apprentice
 
Join Date: Mar 2014
Posts: 95
Default

@Scirocco
Thanks but that spring chart is only for the centershock right?
I'm looking for a side and front springs too....

Claude
toroloco is offline   Reply With Quote
Old 11-07-2014, 01:04 AM   #41612
Tech Regular
 
Bikerbob's Avatar
 
Join Date: Jan 2006
Location: Ontario, Canada
Posts: 453
Trader Rating: 11 (100%+)
Send a message via ICQ to Bikerbob Send a message via MSN to Bikerbob Send a message via Yahoo to Bikerbob
Default

Quote:
Originally Posted by pumpkinfish View Post
Anyone using the Turnigy TrackStar GenII One Cell ESC in their 1/12 pan car? This is my second one (Hobbyking warrantied the first as it was DOA) and I'm having issues with this esc as well. I have all the wires connected properly, but when I plug in the sensor cable, the esc will not turn on. When I unplug the sensor cable, the esc turns on and will run the motor. I am using a motor/sensor cable/1s battery that are all known to work. I also have the program box and do not see an option for sensor/sensorless operation. Can anyone provide some input before I go through the customer service game?
I have just installed this in my car. I am having a couple of issues that I am trying to figure it if its esc or motor etc.

1. a off and on again cogging issue when starting from a stand still.

2. no brakes

It installed setup fine, and seems to be a good little unit overall.. just need to figure out my issues.
__________________
Xray T3'11 (17.5t spec)
Xray T3'11 CanVTA
12rr BMI 1/12
Bikerbob is offline   Reply With Quote
Old 11-08-2014, 06:16 PM   #41613
Tech Addict
 
pumpkinfish's Avatar
 
Join Date: Feb 2004
Location: Schwenksville, PA
Posts: 607
Trader Rating: 4 (100%+)
Default

Bob,

Did you buy the program box? I did and have changed the settings. I think you need to bump it up to 100% brakes.
pumpkinfish is offline   Reply With Quote
Old 11-09-2014, 02:20 AM   #41614
Tech Rookie
 
Join Date: Mar 2014
Posts: 8
Default

Anyone recommend the fastest 13.5 motor and 1s batteries for gt12 at the moment? In particular any views on the R1 Wurks motor?

Thanks
tangerinedream is offline   Reply With Quote
Old 11-09-2014, 10:18 PM   #41615
TLRacing
 
Frank Root's Avatar
R/C Tech Elite Subscriber
 
Join Date: Oct 2004
Location: Corona, CA, USA
Posts: 5,031
Trader Rating: 25 (100%+)
Default

Quote:
Originally Posted by tangerinedream View Post
Anyone recommend the fastest 13.5 motor and 1s batteries for gt12 at the moment? In particular any views on the R1 Wurks motor?

Thanks
I've had really good luck with my Schuur Speed motors in spec classes, 1/12 especially.
__________________
Frank Root -- TLR Project Manager
Twitter - @FrankRoot FB - facebook.com/FrankRootTLR
Team Losi Racing (TLR) - Team Orion - Spektrum - JConcepts - Horizon Hobby - Stick It 1 - Sticky Kicks - Bradley's Fine Line Designs - liverc.com - OCRC Raceway - Tuning Haus - Pacific Coast Hobbies - RIP
Frank Root is offline   Reply With Quote
Old 11-10-2014, 01:18 PM   #41616
Tech Apprentice
 
Join Date: Dec 2013
Posts: 53
Trader Rating: 20 (100%+)
Default

@toroloco, yes for the center springs as they are for the most part common in size and length so that makes it somewhat easy to compare them. Side springs are another deal altogether as each company has their own style and type. That's what would make it very hard to come up with a chart for all of them to compare to each other. I use speedmerchant and crc springs in my car and go by wire diameter. While not the answer your looking for its something that I've never needed to compare between all the available springs. HTH, Chris
Scirocco is offline   Reply With Quote
Old 11-11-2014, 01:58 AM   #41617
Tech Apprentice
 
Join Date: Mar 2014
Posts: 95
Default

@Scirocco
Thanks for the answer.
toroloco is offline   Reply With Quote
Old 11-13-2014, 01:37 AM   #41618
Tech Initiate
 
Join Date: Feb 2010
Posts: 32
Default

Quote:
Originally Posted by wingman2 View Post
Hi guys, anyone that knows me will know that I like messing around, designing stuff anyway trying it out. Well, here are really a couple of pics of the new car I will be trying out once I have stripped it down and got my mate to seal the edges (he does a great job). Feel free to leave any comments if you wish, cheers, Chris.

Hi Any more pics of you car ? Test report ? I am eager to know it. Tks
camlchris is offline   Reply With Quote
Old 11-13-2014, 06:25 AM   #41619
Tech Addict
 
RacinJ's Avatar
 
Join Date: Apr 2004
Location: Mesa Az
Posts: 706
Default

Quote:
Originally Posted by camlchris View Post
Hi Any more pics of you car ? Test report ? I am eager to know it. Tks
Is this a new Corally?
RacinJ is offline   Reply With Quote
Old 11-13-2014, 07:03 AM   #41620
Tech Lord
 
wingracer's Avatar
 
Join Date: Nov 2007
Posts: 12,639
Trader Rating: 21 (100%+)
Default

No, wingman likes to do his own thing using Corally parts.
__________________
Sean. Certified speed crazed mowron.
Team Shepherd USA
www.ashfordhobby.com
wingracer is offline   Reply With Quote
Old 11-13-2014, 08:26 PM   #41621
Tech Addict
 
RacinJ's Avatar
 
Join Date: Apr 2004
Location: Mesa Az
Posts: 706
Default

How did it run?

CRCorally???? SP12Xti????
__________________
AE 12R5.2 / McFactory; Roche P12 '16; Team Scream 17.5 & 13.5

1/12th scale, just 1/12th scale.
I love to go like hell for 8 minutes.
RacinJ is offline   Reply With Quote
Old 11-13-2014, 08:28 PM   #41622
Tech Lord
 
wingracer's Avatar
 
Join Date: Nov 2007
Posts: 12,639
Trader Rating: 21 (100%+)
Default

No idea. Back when he ran at my track, he was using mostly stock Corallys.
__________________
Sean. Certified speed crazed mowron.
Team Shepherd USA
www.ashfordhobby.com
wingracer is offline   Reply With Quote
Old 11-14-2014, 02:35 PM   #41623
Tech Regular
 
michael mercer's Avatar
 
Join Date: Nov 2007
Location: Herrin, Illinois
Posts: 459
Default

Has anyone here ran a tekin gen II MOTOR in blinky 17.5 ? Thoughts?
Thanks
michael mercer is offline   Reply With Quote
Old 11-15-2014, 03:18 AM   #41624
Tech Elite
R/C Tech Elite Subscriber
 
Join Date: Jan 2010
Location: VA Beach
Posts: 3,458
Trader Rating: 54 (100%+)
Default

Quote:
Originally Posted by RacinJ View Post
How did it run?

CRCorally???? SP12Xti????
Pretty sure he is racing BMX with his little ones in the UK. He had an alloy chassis for the car also. Think rc took a back seat though.
Jamison R is offline   Reply With Quote
Old 11-15-2014, 04:34 AM   #41625
Tech Regular
 
Join Date: Nov 2008
Location: Garner, NC
Posts: 390
Default

Quote:
Originally Posted by michael mercer View Post
Has anyone here ran a tekin gen II MOTOR in blinky 17.5 ? Thoughts?
Thanks
They work in offroad, not the best in 1/12. For 17.5 there are better options: Team Scream Racing, Trinity D4, Team Powers Actinium, R1 Wurks. A couple guys I raced with tried them and could never get them to be as competitive.
avink007 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 (1 members and 1 guests)
Ropes
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 12:25 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