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 08-14-2006, 04:08 PM   #19891
Tech Lord
 
protc3's Avatar
 
Join Date: Jun 2003
Location: Spring Hill,Florida
Posts: 10,813
Trader Rating: 13 (100%+)
Default

Quote:
Originally Posted by RAL
Hey guys..was running our door asphalt this weekend with my L4. Traction was inconsistant. The track was sprayed with fruit punch and was super stuck for the touring cars.
My set up was stock springs in front. Purp frnt, pink rear. Olive center spring 30 wt oil. .63 plate ride height was 4.5 and 1 deg toe in. After 3.5-4 minutes all my traction would be gone and I'd be literally sliding down the straightway sideways under power. I was using Paragon, then SPF 30 then both. both seemed to work the best but still didnt last longer than 3-4 minutes. Very strange, never had my car act the way it did. Also the track was somewhat bumpy causing the car so skip irratically entering/exiting corners?? Any setup tips that can help this? Drop to black center spring with 20 wt??? what should I do.

Makes the new carpet track opening up in SoCal area look better and better!!!

i would almost be certain that your pod is sagging in the front.this will make the car do exactly what you describe.make sure that the pod is level.check it at all 4 corners with your ride height gauge.your tire sauce sounds right.i personally like the way tire tweak works on top of paragon.the suntan lotion works well too.that what i used for my 40 lap track record run a few weeks back.the tweak seemed to bite a little more.i agree with adrian on the suntan lotion working real well also.i just like the added traction.i have heard alot of mixed oppinions in the past.i like to use suntan lotion when the bite is real high such as nationals,state race and so on.at regular club races,traction usually isnt as good as big races and the tweak seems to work better.all and all,you will need to try both and see which method works better for your given track conditions.however,if your car is doing funky things like your stating,its not in the sauce.check your pod level.


Adrian,
wish you would have been there this weekend to try my car.can you say BALLISTIC!!!!!!
__________________
Jason Breiner
BMI Racing
Team Associated
J Concepts
protc3 is offline   Reply With Quote
Old 08-14-2006, 04:17 PM   #19892
Tech Champion
 
AdrianM's Avatar
 
Join Date: Aug 2001
Location: Tampa, FL
Posts: 5,914
Trader Rating: 4 (100%+)
Default

Ral - How much paragon are you putting on the tires? On the rear I often put 3 heavy applications before the suntan lotion goes on. You want the tires saturated with paragon. You have to be more careful with the fronts as you dont want the paragon to run on to the part of the tire you dont want to put traction compound on but i still put 3 lighter coats on the fronts.

Jason is right about running less pod droop. We have a track in Orlando that is sticky but medium traction and the cars do weird stuff there. I have to run zero pod droop when I run there.
__________________
Adrian Martinez
What I run: Schumacher Mi5/Associated RC10R5.1/Associated RC12R5.2/Futaba/HobbyWing/Team EA Motorsports/BSR Racing
Where I run: Florida Indoor R/C Complex/Thunder Racing/Florida On Road State Series
AdrianM is offline   Reply With Quote
Old 08-14-2006, 04:21 PM   #19893
Tech Lord
 
protc3's Avatar
 
Join Date: Jun 2003
Location: Spring Hill,Florida
Posts: 10,813
Trader Rating: 13 (100%+)
Default

adrian,you get your spektrum yet?
__________________
Jason Breiner
BMI Racing
Team Associated
J Concepts
protc3 is offline   Reply With Quote
Old 08-14-2006, 04:22 PM   #19894
Tech Elite
 
theisgroup's Avatar
 
Join Date: Apr 2002
Posts: 3,191
Trader Rating: 10 (100%+)
Default

Quote:
Originally Posted by AdrianM
Ral - How much paragon are you putting on the tires? On the rear I often put 3 heavy applications before the suntan lotion goes on. You want the tires saturated with paragon. You have to be more careful with the fronts as you dont want the paragon to run on to the part of the tire you dont want to put traction compound on but i still put 3 lighter coats on the fronts.

Jason is right about running less pod droop. We have a track in Orlando that is sticky but medium traction and the cars do weird stuff there. I have to run zero pod droop when I run there.
i think that maybe my problem. the temp was around 100F and I put one coat on and then suntan lotion. I did check my droop and pod height, all was ok. I was thinking also that it has to be tire tracktion because it works great for a while and then just gives up rear traction. strange thing was that I had no problems with the fronts. and I prep them the same way
__________________
yang lai

Team Tamale | Team Tekin | RCAmerica | Speedmerchant | Speedzone RC | EA Motorsports | Ko Propo USA | eXpress Motorsports | Parma/PSE
theisgroup is offline   Reply With Quote
Old 08-14-2006, 04:22 PM   #19895
Super Moderator
 
Marcos.J's Avatar
R/C Tech Elite Subscriber
 
Join Date: Sep 2003
Location: Semper Fi
Posts: 25,177
Trader Rating: 140 (100%+)
Default

Quote:
Originally Posted by protc3
adrian,you get your spektrum yet?
Marcos.J is offline   Reply With Quote
Old 08-14-2006, 04:30 PM   #19896
RAL
Tech Elite
 
RAL's Avatar
 
Join Date: May 2002
Location: Los Angeles, CA
Posts: 2,205
Trader Rating: 59 (100%+)
Default

Thanks guys! I will do an autopsy...we'll get to the bottom of this
__________________
TEAM ARAI GRIP ● J★STYLE ● P1 BRAND ● RÄLDESIGNWERKS ● FANTOM ● EXOTEK
RAL is offline   Reply With Quote
Old 08-14-2006, 04:35 PM   #19897
Tech Lord
 
protc3's Avatar
 
Join Date: Jun 2003
Location: Spring Hill,Florida
Posts: 10,813
Trader Rating: 13 (100%+)
Default

Quote:
Originally Posted by theisgroup
i think that maybe my problem. the temp was around 100F and I put one coat on and then suntan lotion. I did check my droop and pod height, all was ok. I was thinking also that it has to be tire tracktion because it works great for a while and then just gives up rear traction. strange thing was that I had no problems with the fronts. and I prep them the same way

give me a buzz tommorow.im sure we will get it figured out.it is just going to be some odd little thing.i have gone as far as just using sun tan lotion by itself and the rear still wasnt loose.
__________________
Jason Breiner
BMI Racing
Team Associated
J Concepts
protc3 is offline   Reply With Quote
Old 08-14-2006, 04:39 PM   #19898
Tech Champion
 
JayBee's Avatar
 
Join Date: Mar 2004
Location: 12TH-MAN COUNTRY
Posts: 6,803
Trader Rating: 31 (100%+)
Default

Quote:
Originally Posted by AdrianM
The best tire combo for asphalt are Jaco or TRC double pink wraps front and rear. You would think they would be darty and hard to control but they are faster and smoother than purples and pinks.
I found that out this weekend on an outdoor asphalt track w/ med. grip. Worked VERY WELL for me. Traction was very consistent throughout the whole run. I did have to go to the Red cap CRC damper lube, olive spring w/ red 20wt.Tamiya shock oil. For the last month my sauce of choice is a bit different though- I have a mixture of Tyre Tweak-n-Red Dot.
__________________
R C 3 G R A F I X _ F U S I O N . G R A P H I X _ S E A T T L E - R/C - R A C E R S _ E M E R A L D C I T Y R C . C O M

A E - 12R5.2 _ S M - REV8 PRO
JayBee is offline   Reply With Quote
Old 08-14-2006, 04:51 PM   #19899
Tech Elite
 
theisgroup's Avatar
 
Join Date: Apr 2002
Posts: 3,191
Trader Rating: 10 (100%+)
Default

thanks jason, I will give you a call. it will be like 3 weeks before I can head down there and try it again. so I want to have all my things that I need to try worked out all lined up. and it is only a 5 hours drive to the track.

__________________
yang lai

Team Tamale | Team Tekin | RCAmerica | Speedmerchant | Speedzone RC | EA Motorsports | Ko Propo USA | eXpress Motorsports | Parma/PSE
theisgroup is offline   Reply With Quote
Old 08-14-2006, 10:31 PM   #19900
Moderator
 
Pro ten Holland's Avatar
 
Join Date: May 2003
Location: Druten/Holland (Europe)
Posts: 1,658
Trader Rating: 1 (100%+)
Default

Going down in center shock oil weight usually helps in keeping rear traction in longer.
__________________
http://www.rc-lemans.de/
Pro ten Holland is offline   Reply With Quote
Old 08-14-2006, 11:28 PM   #19901
Tech Master
 
Switch Blade's Avatar
 
Join Date: Jan 2003
Location: The British Invasion
Posts: 1,078
Send a message via AIM to Switch Blade
Default

I have a Yokomo L4 lying around and wondered if it would work good for a modified car? The chassis that hara ran at the worlds looks similar to the yok l4 chassis, and in one picture I saw what looked to be A Yokomo chassis. I tried it in stock and it provided a disadvantage, but in mod on carpet do you think the flex would be a problem or no?
__________________
College
Switch Blade is offline   Reply With Quote
Old 08-15-2006, 09:39 AM   #19902
Tech Regular
 
DerekEngland's Avatar
R/C Tech Charter Subscriber
 
Join Date: Apr 2002
Location: Owasso, OK
Posts: 432
Send a message via AIM to DerekEngland Send a message via Yahoo to DerekEngland
Default

Anyone have any suggestions for a starting setup for a 3.2R for mod carpet? Any help would be appreciated.
__________________
Schumacher USA
R/C Paints by Sonny
DerekEngland is offline   Reply With Quote
Old 08-15-2006, 09:43 AM   #19903
Tech Elite
 
theisgroup's Avatar
 
Join Date: Apr 2002
Posts: 3,191
Trader Rating: 10 (100%+)
Default

hey ugly
__________________
yang lai

Team Tamale | Team Tekin | RCAmerica | Speedmerchant | Speedzone RC | EA Motorsports | Ko Propo USA | eXpress Motorsports | Parma/PSE
theisgroup is offline   Reply With Quote
Old 08-15-2006, 09:52 AM   #19904
Tech Elite
 
DavidAlford's Avatar
 
Join Date: Oct 2001
Location: Oklahoma
Posts: 4,151
Trader Rating: 31 (100%+)
Send a message via AIM to DavidAlford
Default

I just bought a 3.2. So I guess I'll be jumping back into it. I'm sure Robert will be happy.
__________________
Hot Bodies/HPI | Jconcepts | Viper RC | Xpert | Sippel Speed Shop | Lawton RC Raceway | SXT
DavidAlford is offline   Reply With Quote
Old 08-15-2006, 09:54 AM   #19905
Tech Elite
 
theisgroup's Avatar
 
Join Date: Apr 2002
Posts: 3,191
Trader Rating: 10 (100%+)
Default

he sure will be happy his sponsor will be there for him. lol
__________________
yang lai

Team Tamale | Team Tekin | RCAmerica | Speedmerchant | Speedzone RC | EA Motorsports | Ko Propo USA | eXpress Motorsports | Parma/PSE
theisgroup 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 (0 members and 2 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 08:43 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