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 07-03-2006, 10:15 PM   #19096
Tech Fanatic
 
RobS's Avatar
 
Join Date: Jul 2004
Location: Chatham, Ontario
Posts: 804
Default

Quote:
Originally Posted by stulec52
ANyone know if it is possible, or worthwhile, converting a T-Fource to a Carpet Knife?? I have the latest version of the T-Fource if it makes a difference.

thanks
Nope, the chassis on both cars are different. The only things that are the same on the cars are the front end and the rear pod plates. Better off to get a whole new car...
__________________
Rob Say
Action Hobbies Kingsville
"In racing you never really lose. You either win, or learn."

Last edited by RobS; 07-03-2006 at 10:28 PM.
RobS is offline   Reply With Quote
Old 07-03-2006, 10:19 PM   #19097
Tech Elite
 
GrandeGixxer's Avatar
 
Join Date: Jun 2004
Location: Waldorf, MD
Posts: 2,407
Trader Rating: 10 (100%+)
Default

You could do it but you would have to get quite a few parts. You would need a new chassis/lower pod plate, football assembly, and link assemblys. You would be better off getting the new car, or a donor car for these parts. Look on ebay or the buy/sell forums on here and you should be able to find something.
GrandeGixxer is offline   Reply With Quote
Old 07-03-2006, 11:57 PM   #19098
Tech Regular
 
jarrodh's Avatar
 
Join Date: Dec 2005
Location: victoria,bc.Canada
Posts: 315
Trader Rating: 2 (100%+)
Default

i have crc 3.2r, and i like the procuts, i run them straight from the box, and i, (and bassically the hole club) use purple fronts, greay rears.

with tq8 traction wash on ozite carpet, the track layout changes every week, so the grip doesnt build up, like a big race would. but you can definatley feel the difference between rounds.
__________________
www.irocc.ca
jarrodh is offline   Reply With Quote
Old 07-04-2006, 12:35 AM   #19099
Tech Elite
 
Turbonium's Avatar
 
Join Date: Feb 2003
Location: Oklahoma
Posts: 2,302
Trader Rating: 27 (100%+)
Send a message via Yahoo to Turbonium
Default

sorry if this has been asked before, but on my Rev.4, i have the oldschool frontend, but i read where one or the other front was better for smooth, or bumpy tracks... any input as to which works better where? i am on carpet, and have access the AE front, as well.

and maybe the +'s or -'s of each setup? thanks....
__________________
Wes

Team Novak
Turbonium is offline   Reply With Quote
Old 07-04-2006, 01:49 AM   #19100
Tech Initiate
 
psychosilence's Avatar
 
Join Date: Apr 2006
Posts: 38
Default

Thanks for all the help Jason! Will set the car up like that tonight and test it Thursday.....Im looking forward to some good racing!
psychosilence is offline   Reply With Quote
Old 07-04-2006, 03:00 AM   #19101
Tech Adept
 
mooony's Avatar
 
Join Date: Jun 2005
Posts: 117
Default

It is strange to see so many t-bar cars in the finale of the Worlds that was held on carpet. I would have thought the link cars would have done better.

I was thinking of getting a link car but now I have changed my mind and will e getting t-bar car.

Ronald
mooony is offline   Reply With Quote
Old 07-04-2006, 03:44 AM   #19102
Tech Fanatic
 
Join Date: Nov 2001
Location: Somewhere on earth
Posts: 927
Default

Quote:
Originally Posted by mooony
It is strange to see so many t-bar cars in the finale of the Worlds that was held on carpet. I would have thought the link cars would have done better.

I was thinking of getting a link car but now I have changed my mind and will e getting t-bar car.

Ronald
I thought T bar cars were more suited to carpet and link cars were more suited to asphalt?

There was a large amount of link cars in the top 10 at the last worlds on asphalt and not many T bar cars.
Rick Draper is offline   Reply With Quote
Old 07-04-2006, 06:10 AM   #19103
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 CarlosG.
The setups you all are giving, are they for a thick chassis or a thin chassis like the 12l4. I have a 2.5 mm chassis on my car, and I run it on asphalt. I have also the same setup as Protc3 is describing. Except for damper disk( I use tubes) and the ride height( I run 3.5 to 4 mm all the way around).
that setup is what i run on asphalt.the high ride height was for a bumpy track.on a smoothe track i run my ride height at 4mm front and 4.5 rear.the only change i make for carpet is i go to the .075 t plate if the track is smoothe and i change to 100 wt shock oil in the discs.i also change tires.but in a nutshell,that set up works very well on most surfaces.
__________________
Jason Breiner
BMI Racing
Team Associated
J Concepts
protc3 is offline   Reply With Quote
Old 07-04-2006, 06:16 AM   #19104
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 mooony
It is strange to see so many t-bar cars in the finale of the Worlds that was held on carpet. I would have thought the link cars would have done better.

I was thinking of getting a link car but now I have changed my mind and will e getting t-bar car.

Ronald
link cars are better suited for bumpy tracks due to the compression and torsional flex of the rear end are isolated.in most conditions if you have a fast guy running a T plate and one running link,the Tplate is usually always faster.im not trying to start any arguements here.i know everyone is going to disagree but this is what has been told to me by alot of the top pro 1/12th drivers.i personally only drove a link car on asphalt that was smoothe.i was faster with my t plate car by about 2 tenths of a second per lap.again,it will depend on the driver though.i just dont feel the link rear end is as progressive as the T plate.i do like the isolation idea though
__________________
Jason Breiner
BMI Racing
Team Associated
J Concepts
protc3 is offline   Reply With Quote
Old 07-04-2006, 06:18 AM   #19105
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 Turbonium
sorry if this has been asked before, but on my Rev.4, i have the oldschool frontend, but i read where one or the other front was better for smooth, or bumpy tracks... any input as to which works better where? i am on carpet, and have access the AE front, as well.

and maybe the +'s or -'s of each setup? thanks....

i tried the old school front end and thought it was ok.i like the new reactive castor front end better though.
__________________
Jason Breiner
BMI Racing
Team Associated
J Concepts
protc3 is offline   Reply With Quote
Old 07-04-2006, 06:29 AM   #19106
Tech Elite
 
squarehead's Avatar
R/C Tech Charter Subscriber
 
Join Date: Nov 2003
Location: Wheaton, Illinois
Posts: 4,210
Trader Rating: 75 (100%+)
Send a message via AIM to squarehead Send a message via MSN to squarehead Send a message via Yahoo to squarehead Send a message via Skype™ to squarehead
Default

Jason, I have one of your db12s, and the only thing I DON'T like about it is the T-bar design. The only weak link and inconsistent item in the entire chassis is the flexible piece of fiberglass that we can't seem to get past using as half of the suspension in a race car.

It's an old argument that will never go away (until someone builds a better mousetrap), but the best solution is to do what I did... have one car of each kind.
__________________
Everything depends.
Nothing is always.
Everything is sometimes.
squarehead is offline   Reply With Quote
Old 07-04-2006, 06:38 AM   #19107
Tech Lord
 
protc3's Avatar
 
Join Date: Jun 2003
Location: Spring Hill,Florida
Posts: 10,813
Trader Rating: 13 (100%+)
Default

i agree with you.i do like the independant rear idea but the fact is that coil springs are just not as progressive as a torsion plate.being the minimal movement of the rear pod,the coil springs just dont have the quick reaction of a tplate.the downside is that a Tplate has a glass jaw.i can tell you this,i am working on a new rear end that will give the best of both worlds.when the time is right i will introduce it.
__________________
Jason Breiner
BMI Racing
Team Associated
J Concepts
protc3 is offline   Reply With Quote
Old 07-04-2006, 06:46 AM   #19108
Tech Elite
 
squarehead's Avatar
R/C Tech Charter Subscriber
 
Join Date: Nov 2003
Location: Wheaton, Illinois
Posts: 4,210
Trader Rating: 75 (100%+)
Send a message via AIM to squarehead Send a message via MSN to squarehead Send a message via Yahoo to squarehead Send a message via Skype™ to squarehead
Thumbs up

Quote:
Originally Posted by protc3
i can tell you this,i am working on a new rear end that will give the best of both worlds.when the time is right i will introduce it.
Then put me down for one, Jason, because every item I have ever owned from BMI has been top shelf quality.


We need to get you to explore anodized colors other than that hideous, played-out blue, though.
__________________
Everything depends.
Nothing is always.
Everything is sometimes.
squarehead is offline   Reply With Quote
Old 07-04-2006, 06:48 AM   #19109
Tech Lord
 
protc3's Avatar
 
Join Date: Jun 2003
Location: Spring Hill,Florida
Posts: 10,813
Trader Rating: 13 (100%+)
Default

yeah,my blue phase has come and gone.now its pink just messin.i will come up with something cool though.i may do a charcoal grey.
__________________
Jason Breiner
BMI Racing
Team Associated
J Concepts
protc3 is offline   Reply With Quote
Old 07-04-2006, 07:00 AM   #19110
Tech Elite
 
squarehead's Avatar
R/C Tech Charter Subscriber
 
Join Date: Nov 2003
Location: Wheaton, Illinois
Posts: 4,210
Trader Rating: 75 (100%+)
Send a message via AIM to squarehead Send a message via MSN to squarehead Send a message via Yahoo to squarehead Send a message via Skype™ to squarehead
Default

Pink is HOT, dude! I'd do that in a hearbeat. Though, my current dB12 is mostly old school gold, and GOLD is super cool. Orange hasn't been done, either... and you can't go wrong with hard coated (Losi-esque) natural. That would be pretty cool, actually.
__________________
Everything depends.
Nothing is always.
Everything is sometimes.
squarehead 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 03:29 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