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 04-11-2007, 02:08 PM   #24796
Tech Elite
 
wallyedmonds's Avatar
 
Join Date: Jul 2006
Location: Brampton ont canada
Posts: 3,662
Default

lets just say this
to some like myself that for many years has driven a t plate car
now a link car this year the gen xis a much better driver now
or i feel i am
and as for the front end its the damm best thing ever
for a new driver to 1/12 this car will make them happy.
wallyedmonds is offline   Reply With Quote
Old 04-11-2007, 02:11 PM   #24797
Tech Elite
 
CypressMidWest's Avatar
 
Join Date: May 2003
Location: Central Ohio
Posts: 4,603
Trader Rating: 1 (100%+)
Default

Quote:
Originally Posted by AdrianM
I can say the same thing and bring up races won by T-bar cars.

How about this...If the guys running link cars at the Nats would have run t-bar cars they would have gone even faster
You can, but last carpet season you wouldn't be bringing up very many. If you run down the list of equipment run by the National Level A-mainers You'll see that at this point most run link cars, at least for carpet. Asphalt's a whole different story.

And to answer your question, no. If they could've gone faster with a bar car, many of them would've have run bar cars. Instead they ran their obsolete link cars and dominated the event.
__________________
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 04-11-2007, 02:15 PM   #24798
Tech Elite
 
wallyedmonds's Avatar
 
Join Date: Jul 2006
Location: Brampton ont canada
Posts: 3,662
Default

im gona run my gen out side i dont see why i would run my L4
wallyedmonds is offline   Reply With Quote
Old 04-11-2007, 02:15 PM   #24799
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 wallyedmonds
lets just say this
to some like myself that for many years has driven a t plate car
now a link car this year the gen xis a much better driver now
or i feel i am
and as for the front end its the damm best thing ever
for a new driver to 1/12 this car will make them happy.
maybe because the link car feels lazy making it easier to drive as for the front end nice copy of the AE front end, maybe CRC learned how to design cars from Hudy
Marcos.J is offline   Reply With Quote
Old 04-11-2007, 02:19 PM   #24800
Tech Elite
 
wallyedmonds's Avatar
 
Join Date: Jul 2006
Location: Brampton ont canada
Posts: 3,662
Default

Quote:
Originally Posted by Marcos.J
maybe because the link car feels lazy making it easier to drive as for the front end nice copy of the AE front end, maybe CRC learned how to design cars from Hudy
how is it a copy
and i do more laps with my gen
and lap times are better
it looks like i know what im doing
and its not lazy
wallyedmonds is offline   Reply With Quote
Old 04-11-2007, 02:39 PM   #24801
Tech Champion
 
AdrianM's Avatar
 
Join Date: Aug 2001
Location: Tampa, FL
Posts: 5,914
Trader Rating: 4 (100%+)
Default

Everything in a link cars setup is there to compensate for the fact that they have too little side spring rate. The damper tube grease/oils they use are insanly high to make the car transition left to right faster but its just not ideal. As a result....

All link cars push and to get steering you have to run stiff center springs and more dual rate.

Link cars all wear front tires faster than t-bars cars because they push and you have to run more dual rate to get them to turn.

Cypress - I know all the guys you are talking about. I talked to a few of them at the Snowbirds. They told me they were told to run that car. They didn't have the option of running the t-bar car. One of the team drivers (in the stock A Main) told me he would not run it again even if he had to buy a car.
__________________
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 04-11-2007, 02:42 PM   #24802
Tech Champion
 
AdrianM's Avatar
 
Join Date: Aug 2001
Location: Tampa, FL
Posts: 5,914
Trader Rating: 4 (100%+)
Default

Quote:
Originally Posted by wallyedmonds
im gona run my gen out side i dont see why i would run my L4
Be sure to buy about 3x as many front tires as rears and you will be fine
__________________
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 04-11-2007, 02:53 PM   #24803
Tech Champion
 
Join Date: Nov 2001
Location: Hawaii, USA
Posts: 7,157
Default

Quote:
Originally Posted by AdrianM
All link cars push and to get steering you have to run stiff center springs and more dual rate.
Really...I've found quite the opposite to be true. My 3.2R had too much steering and I had to tone it down. Even toned down it turned in quicker then the bar cars on our track. My Darkside Mx2 is even better and also turns incredibly fast compared to the bar cars I've raced against and driven. I have had friends drive my cars and once they figure out the link cars can enter a corner faster they are very impressed. I started noticing that back in 1/10th pan days driving my EV10. I could enter a turn faster and hold more speed through a turn then the bar cars out there...which often got me into trouble because I'd run through a guy in a corner expecting him not to slow down so much. I've always had to run dual rate to take out steering in a link car.
InspGadgt is offline   Reply With Quote
Old 04-11-2007, 02:59 PM   #24804
Tech Elite
 
wallyedmonds's Avatar
 
Join Date: Jul 2006
Location: Brampton ont canada
Posts: 3,662
Default

i dont wear front tires faster anymore
its all in the setup of the car
and if a car makes you do better lap times why go back to a t plate car
and as for push
again this is setup cuz i can make a link
car turn on a dime if i want to
basically what im saying is a link car and manly the gen x
its a very easy car to setup

if i had this car years ago i just may still have hair on my head
wallyedmonds is offline   Reply With Quote
Old 04-11-2007, 03:01 PM   #24805
Tech Champion
 
AdrianM's Avatar
 
Join Date: Aug 2001
Location: Tampa, FL
Posts: 5,914
Trader Rating: 4 (100%+)
Default

Quote:
Originally Posted by InspGadgt
Really...I've found quite the opposite to be true. My 3.2R had too much steering and I had to tone it down. Even toned down it turned in quicker then the bar cars on our track. My Darkside Mx2 is even better and also turns incredibly fast compared to the bar cars I've raced against and driven. I have had friends drive my cars and once they figure out the link cars can enter a corner faster they are very impressed. I started noticing that back in 1/10th pan days driving my EV10. I could enter a turn faster and hold more speed through a turn then the bar cars out there...which often got me into trouble because I'd run through a guy in a corner expecting him not to slow down so much. I've always had to run dual rate to take out steering in a link car.
Thats cool...that means you have the car figured out better than the guys they pay and fly around the world to run it.

Cypress - as far as 2006 and 2007 T- bars wins...how's this:

2006 IFMAR Worlds...on Carpet
2007 Snowbirds Mod...on Carpet
2007 EFRA Euros...on Carpet
__________________
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 04-11-2007, 03:04 PM   #24806
Tech Elite
 
dr_hfuhuhurr's Avatar
 
Join Date: Aug 2003
Location: Westchester, NY
Posts: 4,422
Trader Rating: 69 (100%+)
Default

Quote:
Originally Posted by AdrianM
Cypress - as far as 2006 and 2007 T- bars wins...how's this:

2006 IFMAR Worlds...on Carpet
2007 Snowbirds Mod...on Carpet
2007 EFRA Euros...on Carpet
Don't the two of you go through this every thousand posts of this thread?
__________________
"There is a fine line between hobby and mental illness. Which side are you on?"

“Life is hard; it's harder if you're stupid.” - John Wayne
dr_hfuhuhurr is offline   Reply With Quote
Old 04-11-2007, 03:07 PM   #24807
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 wallyedmonds
how is it a copy
and i do more laps with my gen
and lap times are better
it looks like i know what im doing
and its not lazy
maybe Ill put together the gen and maybe someday Ill be as good as wally
Marcos.J is offline   Reply With Quote
Old 04-11-2007, 03:09 PM   #24808
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 wallyedmonds
i dont wear front tires faster anymore
its all in the setup of the car
and if a car makes you do better lap times why go back to a t plate car
and as for push
again this is setup cuz i can make a link
car turn on a dime if i want to
basically what im saying is a link car and manly the gen x
its a very easy car to setup

if i had this car years ago i just may still have hair on my head
wally
Marcos.J is offline   Reply With Quote
Old 04-11-2007, 03:11 PM   #24809
Tech Champion
 
Join Date: Nov 2001
Location: Hawaii, USA
Posts: 7,157
Default

Quote:
Originally Posted by AdrianM
Thats cool...that means you have the car figured out better than the guys they pay and fly around the world to run it.
That's typically with the out of the box configuration so I don't think I've found out anything different then the manufacturers.
InspGadgt is offline   Reply With Quote
Old 04-11-2007, 03:17 PM   #24810
Tech Elite
 
speedxl's Avatar
R/C Tech Charter Subscriber
 
Join Date: Jun 2003
Location: Portland Oregon.
Posts: 3,876
Default

Link cars suck!
__________________
Pemberton / R1 / All out motorsports / Team Power Push
speedxl 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 02:50 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