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 08-27-2013, 02:56 AM   #39721
Tech Adept
 
Peakki's Avatar
 
Join Date: Nov 2006
Location: Finland
Posts: 143
Trader Rating: 1 (100%+)
Default

Quote:
Originally Posted by InspGadgt View Post
Question for you guys...I just recently tried out the Contact tires for 1/12th at our local asphalt track and my car has never driven so good! I'm really liking not only the grip but the rim design as well. I'm in the process of gearing up for the IIC this year and am about ready to order tires for the event and was wondering if any of you have ran these on carpet and if so how they compare against the CRC and Jaco tires on carpet...given that they don't sell the compounds typically seen on carpet.
White rims? Contact tires with white rims, my experiences:
car pushes through turns because front rim is too flexible, on high speed corners and at the end of the straight quite badly and hard to drive.
Double pink front push more than magentas.
Rear pinks and magentas are quite decent but for some reason the side walls rip more easily than with for example Mobgums on Jaco wheels. (Same diameter trued tires).

What is the best spur at the moment for mod? I don't like xenon VSS and now tried Kawada super diff gears and those seem better and smoother diff action
__________________
Destiny&V-Dezign 1:12- Sanwa M12s - Xray XB4 2016 - Xray XB2 - Team Orion R10.1 Pro & Sanwa Super Vortex Zero - Team Orion Vortex & Muchmore & Reedy BL motors - Sanwa servos
Peakki is offline   Reply With Quote
Old 08-27-2013, 06:32 AM   #39722
Tech Apprentice
 
Join Date: Aug 2013
Posts: 53
Default

Hello!
Starting to race 1/12 on our local track. It's outdoor so main question is which 48p Spur/pinion will be best for Xray x12 13.5 stock?
maeg is offline   Reply With Quote
Old 08-27-2013, 08:10 PM   #39723
Tech Elite
 
andrewdoherty's Avatar
 
Join Date: Jan 2005
Location: ★Wylie, TX★
Posts: 3,763
Trader Rating: 47 (100%+)
Default

Kimbrough gears are pretty good. Inexpensive, durable, and ubiquitous.
__________________
"Whether you think you can, or think you can't, you're right." -Henry Ford
"[Driving] Genius is 1% inspiration, and 99% perspiration" -T.A. Edison
|◤Hobbywing◢|◤SpeedzoneUSA.com◢|◤Pro-One◢|
|◤ReflexRacing.net◢|◤Protoform◢|◤AVID R/C◢|
andrewdoherty is offline   Reply With Quote
Old 08-28-2013, 11:46 AM   #39724
Tech Champion
 
Join Date: Nov 2002
Location: Chicago, IL
Posts: 7,474
Trader Rating: 34 (100%+)
Default

Been away for awhile. ..

Anyone ever use these 1s saddles?

http://www.speedzoneusa.com/estore/i...6a5cf235a83cf4

http://www.redrc.net/2010/01/speedzo...e-saddle-pack/

Was debating firing up my old CRC T-Force using these packs.
Nexus is offline   Reply With Quote
Old 08-28-2013, 01:37 PM   #39725
Tech Master
 
EricF's Avatar
 
Join Date: Jun 2003
Location: AZ
Posts: 1,516
Default

Quote:
Originally Posted by Nexus View Post
Been away for awhile. ..

Anyone ever use these 1s saddles?

http://www.speedzoneusa.com/estore/i...6a5cf235a83cf4

http://www.redrc.net/2010/01/speedzo...e-saddle-pack/

Was debating firing up my old CRC T-Force using these packs.
I believe that Chris Moore of Phx., AZ. has used them, send him a PM. He has posted on the last couple of pages.
E
__________________
<
AE 12R5.2 (x2) - TC7 - M05 - M05V2R

People who don't have to wait for the latest item, should not tell those that do, that "It's worth the wait"
EricF is offline   Reply With Quote
Old 08-30-2013, 06:33 PM   #39726
Tech Rookie
 
Join Date: Aug 2013
Posts: 17
Default

I am new to 12th scale. About to buy my first kit to put together. I have read way back to January on this thread and found some info. What im looking for it what it the 1s speedo of choice right now for 12th scale cars? I have to buy a new one and want to make sure its going to fit and do what it should.
Tigwldr is offline   Reply With Quote
Old 08-30-2013, 06:39 PM   #39727
Tech Fanatic
 
bertottius's Avatar
 
Join Date: Feb 2012
Location: Barrington, NJ
Posts: 826
Trader Rating: 16 (100%+)
Default

Quote:
Originally Posted by Tigwldr View Post
I am new to 12th scale. About to buy my first kit to put together. I have read way back to January on this thread and found some info. What im looking for it what it the 1s speedo of choice right now for 12th scale cars? I have to buy a new one and want to make sure its going to fit and do what it should.
Can't go wrong with a Tekin RS Pro or RS Gen 2. Speedpassion makes a good ESC as well.
__________________
CHRIS BERTOTTI
www.teamirsrc.com
bodiesbybean.com
bertottius is offline   Reply With Quote
Old 08-30-2013, 07:22 PM   #39728
Tech Master
 
burgboyz's Avatar
 
Join Date: Jan 2005
Location: Da 'Burg
Posts: 1,247
Trader Rating: 70 (100%+)
Default

SP GT2.1EX is my favorite.
No need for extras like a voltage regulator to clutter up the build.
http://www.speedpassion.net/us/catagory.asp?c=esc&sc=16
__________________
Got Droop???
Speed Passion....Speed Power....Serpent America/Desoto Racing.
burgboyz is offline   Reply With Quote
Old 08-30-2013, 07:39 PM   #39729
Tech Champion
 
Radio Active's Avatar
 
Join Date: Jun 2003
Location: Newcastle, Australia
Posts: 6,995
Trader Rating: 2 (100%+)
Default

Quote:
Originally Posted by Nexus View Post
Been away for awhile. ..

Anyone ever use these 1s saddles?

http://www.speedzoneusa.com/estore/i...6a5cf235a83cf4

http://www.redrc.net/2010/01/speedzo...e-saddle-pack/

Was debating firing up my old CRC T-Force using these packs.
I've used them. They work well. The capacity isn't as great as the latest cells, but in all other respects I found them comparable to similar stick cells.
__________________
Reigning NSW 4WD Group 20 Champion
Member: Maitland Radio Car Club (http://www.morcc.com.au)
twitter: @dvcotton
Australian 12th Scale hastag: #EP12AU
Radio Active is offline   Reply With Quote
Old 08-30-2013, 08:11 PM   #39730
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 Tigwldr View Post
I am new to 12th scale. About to buy my first kit to put together. I have read way back to January on this thread and found some info. What im looking for it what it the 1s speedo of choice right now for 12th scale cars? I have to buy a new one and want to make sure its going to fit and do what it should.
As your new to 12th scale
It may be worthwhile to have a look at the link in my sig
Lot of info there, including ESC choices
__________________
--> 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 08-30-2013, 08:41 PM   #39731
Tech Champion
 
Join Date: Nov 2001
Location: Hawaii, USA
Posts: 7,157
Default

Quote:
Originally Posted by RedBullFiXX View Post
As your new to 12th scale
It may be worthwhile to have a look at the link in my sig
Lot of info there, including ESC choices
Missing the Viper VTX-1 there
InspGadgt is online now   Reply With Quote
Old 08-30-2013, 08:50 PM   #39732
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 InspGadgt View Post
Missing the Viper VTX-1 there
Updated
__________________
--> 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 08-30-2013, 10:21 PM   #39733
Tech Regular
 
Join Date: Nov 2008
Location: Garner, NC
Posts: 390
Default

Quote:
Originally Posted by bertottius View Post
Can't go wrong with a Tekin RS Pro or RS Gen 2. Speedpassion makes a good ESC as well.
The Tekin RS and RS Pro require a booster or receiver battery to work with 1s batteries. Speed Passion's latest ESCs, the Reventon series, also need a booster or receiver pack. SP's GT V2.1 EX will work with a 1s without anything extra.

The Hobbywing v3.1 1s is great, the cap and switch are built into the case. ORCA, Viper and Team Orion also make great 1s speed controls that don't require any booster or receiver pack. Hobbywing also has their original 1s ESC for about $100 or less right now.
avink007 is offline   Reply With Quote
Old 08-31-2013, 08:12 AM   #39734
Tech Elite
 
asc6000's Avatar
 
Join Date: Jan 2011
Location: Meridian Idaho
Posts: 3,383
Trader Rating: 15 (100%+)
Default

Quote:
Originally Posted by Tigwldr View Post
I am new to 12th scale. About to buy my first kit to put together. I have read way back to January on this thread and found some info. What im looking for it what it the 1s speedo of choice right now for 12th scale cars? I have to buy a new one and want to make sure its going to fit and do what it should.
Orion http://www.teamorion.com/index.php?d...iew&page_id=44tried the rest and stuck with the best
__________________
"you reach the limit, you touch the limit, then you pass the limit, now there is a new limit"
Ayrton Senna
asc6000 is offline   Reply With Quote
Old 09-01-2013, 11:32 PM   #39735
Tech Elite
 
BoneCrusher's Avatar
 
Join Date: Mar 2007
Location: Calgary, Alberta
Posts: 2,127
Trader Rating: 2 (100%+)
Default Duo 2 13.5 Blinky

Anyone by any chance have run a Duo 2 13.5 blinky and have a good setup for motor timing and rollout they found to be pretty fast and stay somewhat cool temperature wise? Using a Hobbywing V3.1 1S Speedo for this.

Thanks,

Ivan
__________________
ARC R10, 12R5.1, Tamiya Mini, MTS FFv2 Pro, Exotek F1
carcar.ca

Last edited by BoneCrusher; 09-01-2013 at 11:45 PM.
BoneCrusher 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 08:04 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