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 05-25-2004, 09:49 PM   #7876
Tech Master
 
clinttredway's Avatar
R/C Tech Charter Subscriber
 
Join Date: Jan 2004
Location: Texas
Posts: 1,291
Trader Rating: 3 (80%+)
Send a message via MSN to clinttredway
Default

they are pratically the same car.. if your track supports one over the other, that would be the one I went with.. I personally have a Rev 3 & Rev 4, but my track supports the CRC cars...
__________________
Do or Do Not, There Is No Try
clinttredway is offline   Reply With Quote
Old 05-25-2004, 09:52 PM   #7877
Tech Rookie
 
Join Date: Jul 2003
Posts: 12
Default

Cool, how durable are the the rev 3 and 4? have you broken much stuff?
Dickie is offline   Reply With Quote
Old 05-25-2004, 10:10 PM   #7878
Tech Master
 
clinttredway's Avatar
R/C Tech Charter Subscriber
 
Join Date: Jan 2004
Location: Texas
Posts: 1,291
Trader Rating: 3 (80%+)
Send a message via MSN to clinttredway
Default

I haven't broken anything yet.. cracked some Jaco wheels though.. but thats my fault
__________________
Do or Do Not, There Is No Try
clinttredway is offline   Reply With Quote
Old 05-26-2004, 04:07 AM   #7879
Tech Apprentice
 
Join Date: Mar 2004
Location: Tampa, Florida
Posts: 67
Default

Do you know what CRC drivers use in their 4 cell modifieds?
amgman is offline   Reply With Quote
Old 05-26-2004, 04:35 AM   #7880
Tech Addict
 
Join Date: Oct 2003
Location: Sheffield, UK
Posts: 737
Send a message via ICQ to Cobra81li200
Default

Hi guys,

I just got a Switchblade SE 2002, what do you guys recommend me to start with setup wise on carpet ?

I thought I'd do that :

run the servo on the chassis (I don't have the servo mounts yet, so it's taped on the chassis for the moment, but it gives a lot of bump steer, so I assume the car will be easy to drive),

No active castor, camber 2 and castor set as per instructions,

Silicone diff grease in the lateral dampers, and in the shock I leave what's actually in (got no idea what it is, but it feels alright), stock springs all round,

Proto P35, 17T motor.

grey/purple tires as recommended for carpet.

The track is quite small and technical, what rollout would you recommend ? I want the car to be easy at first, and I'll make it more agressive as I'll get used to it.

Also, how do you setup the diff ? Should it be almost slipping like on a TC, or very stiff ?

I'm almost a newbie in 12th scale, I had a pro10 in the days, but I was a kid and wasn't aware of what I was doing, so any advice will be apreciated.

PS : Ray, did you see my mail ?
Cobra81li200 is offline   Reply With Quote
Old 05-26-2004, 08:03 AM   #7881
Tech Fanatic
 
crimson eagle's Avatar
 
Join Date: Jun 2003
Location: Nor Cal
Posts: 841
Send a message via ICQ to crimson eagle
Default

Hi All,

I rune a rev3 which has been modified to a rev4 by me and I'm trying to make it work on asphalt. can any of you tell me what the low roll center cones do and if they will help me to run on the asphalt?
crimson eagle is offline   Reply With Quote
Old 05-26-2004, 08:56 AM   #7882
Tech Champion
 
rayhuang's Avatar
 
Join Date: Dec 2001
Location: Cleveland Heights, Ohio
Posts: 6,511
Trader Rating: 5 (100%+)
Send a message via AIM to rayhuang
Default

Cobra-I did see your e-mail!! Sorry I haven't replied yet.
Ray

On the Rev3/4 question about cones-the LRC will give your car more rear traction. I have been running LRC on carpet-even with the Rev4. So I would assume thatits the hot ticket on asphalt too.

Ray
rayhuang is offline   Reply With Quote
Old 05-26-2004, 07:20 PM   #7883
Tech Apprentice
 
Join Date: Mar 2004
Location: Tampa, Florida
Posts: 67
Default

Have you guys put Orion Revolution motors in your 1/12 scale cars?
amgman is offline   Reply With Quote
Old 05-26-2004, 08:17 PM   #7884
Tech Addict
 
Join Date: Nov 2003
Location: Ridin my Harley
Posts: 707
Trader Rating: 3 (100%+)
Send a message via AIM to Adam Hartzell
Default

Quote:
Originally posted by amgman
Have you guys put Orion Revolution motors in your 1/12 scale cars?
They rock but you need to have great throtle control to nake 8 min.
Adam Hartzell is offline   Reply With Quote
Old 05-26-2004, 08:26 PM   #7885
Tech Elite
 
ChrisP's Avatar
 
Join Date: Sep 2003
Location: Shelby Twp, MI
Posts: 2,045
Trader Rating: 7 (100%+)
Send a message via Yahoo to ChrisP
Default

Wow...I thought I had heard that the efficiency of the Orion's was pretty good relative to some of the other brands??
ChrisP is offline   Reply With Quote
Old 05-26-2004, 08:50 PM   #7886
Tech Apprentice
 
Join Date: Mar 2004
Location: Tampa, Florida
Posts: 67
Default

I think I could trim the throttle down with the KO esc that I will be using.
Heres my setup:
CRC CArpet Knife Team Red Edition 4 cell
Team ORion Touring Revolution 9x1
Ko Propo VFS-2000 esc
KO Propo KR-302 Recivier
Ko Propo ICS-949 servo for steering

Does it sound like a competitive setup?
amgman is offline   Reply With Quote
Old 05-26-2004, 08:54 PM   #7887
Tech Addict
 
Join Date: Nov 2003
Location: Ridin my Harley
Posts: 707
Trader Rating: 3 (100%+)
Send a message via AIM to Adam Hartzell
Default

amgman--You should be dialed with your electronics. I would prefer a different car but thats just me.
Adam Hartzell is offline   Reply With Quote
Old 05-26-2004, 09:51 PM   #7888
Tech Initiate
 
Join Date: Jul 2003
Posts: 27
Default

Dickie,

Go with the CRC car. Although they look similar, the little details really make the CRC car better. The car comes much more complete than either of the Rev cars. CRC car comes with bearings, tires and steering hardware unlike the REV cars. CRC makes their own rims and tires, they seem to be much more durable than the Jaco's for me.
Junkie is offline   Reply With Quote
Old 05-27-2004, 07:40 AM   #7889
Tech Adept
 
Join Date: Dec 2003
Location: Oslo, Norway
Posts: 237
Default

Quote:
Originally posted by amgman
I think I could trim the throttle down with the KO esc that I will be using.
Heres my setup:
CRC CArpet Knife Team Red Edition 4 cell
Team ORion Touring Revolution 9x1
Ko Propo VFS-2000 esc
KO Propo KR-302 Recivier
Ko Propo ICS-949 servo for steering

Does it sound like a competitive setup?

Team Orion Touring Revolution 9x1
dont't go for this:

i will start her:
Team Orion Touring Revolution 10x2 (11x2 may be)
or
Team Orion Modified Revolution 9x2

Alf
alf.skaar is offline   Reply With Quote
Old 05-27-2004, 07:51 AM   #7890
Tech Addict
 
Join Date: Oct 2003
Location: Sheffield, UK
Posts: 737
Send a message via ICQ to Cobra81li200
Default

No one have any knowledge on the switchblade ?
Cobra81li200 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 08:50 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