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 12-04-2006, 10:19 AM   #22216
Tech Elite
 
J.Gonzalez's Avatar
 
Join Date: Nov 2002
Location: connecticut
Posts: 2,409
Trader Rating: 16 (100%+)
Default

Check out the pics...

I used tekin mini rage brushless with aeon 380 sized motor.

I originally wanted something around the speed of stock for a practice car...however the car runs similiar in speed to 10t.
Attached Thumbnails
1/12 forum-dsc00045.jpg   1/12 forum-dsc00044.jpg  
J.Gonzalez is offline   Reply With Quote
Old 12-04-2006, 10:22 AM   #22217
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 senna555
Check out the pics...

I used tekin mini rage brushless with aeon 380 sized motor.

I originally wanted something around the speed of stock for a practice car...however the car runs similiar in speed to 10t.
thats pretty cool ! and alot smaller
Marcos.J is offline   Reply With Quote
Old 12-04-2006, 11:11 AM   #22218
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 senna555
Check out the pics...

I used tekin mini rage brushless with aeon 380 sized motor.

I originally wanted something around the speed of stock for a practice car...however the car runs similiar in speed to 10t.
Interesting...I wonder if this would work with the novak brushless 13.5?

I want to go brushless for everything but I don't want to mess with the size of the LRP or the smoke/flames of the GTB.
__________________
"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 12-04-2006, 11:19 AM   #22219
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 dr_hfuhuhurr
Interesting...I wonder if this would work with the novak brushless 13.5?

I want to go brushless for everything but I don't want to mess with the size of the LRP or the smoke/flames of the GTB.
well the novak is a sensored motor and the tekin is sensorless i have the gtb in mine and it fits pretty good, ran it with the 13.5 and it was pretty quick (with a 64mm roll out) but now i installed the 3.5

I have GTBs in all my cars (3 total) with no problems , i tried the lrp and it went up in smoke after the 4th run
Marcos.J is offline   Reply With Quote
Old 12-04-2006, 11:23 AM   #22220
Tech Fanatic
 
akura2's Avatar
 
Join Date: Feb 2006
Location: Paramount, CA
Posts: 810
Send a message via AIM to akura2 Send a message via Yahoo to akura2
Default

Quote:
Originally Posted by senna555
Check out the pics...

I used tekin mini rage brushless with aeon 380 sized motor.

I originally wanted something around the speed of stock for a practice car...however the car runs similiar in speed to 10t.
Which AON is that?... I have the 4900 in another car so I may try that....
akura2 is offline   Reply With Quote
Old 12-04-2006, 11:50 AM   #22221
Tech Elite
 
J.Gonzalez's Avatar
 
Join Date: Nov 2002
Location: connecticut
Posts: 2,409
Trader Rating: 16 (100%+)
Default

I am not sure about the motor...I think it is around 5000kv. It is a demo from my local hobby shop...email cmarcy@rcmadness as he has another motor in stock and he can give you the info.

Jamie
J.Gonzalez is offline   Reply With Quote
Old 12-04-2006, 03:50 PM   #22222
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 Slapmaster6000
The Flex Plate will not be available until mid Jan at the rate things are moving. It's a pretty early announcement. But there should be plenty of time before 'Birds and Nat's. Wouldn't it be fun to roll the canlendar back a few and capitalize off of some recent events? I remember Dave Campbell selling out of 600 1/8th scale VDS Lolas in just a couple of days at Worlds warm up in Cinci in '03. That must have been fun.

Jason, yea... the car balances really even with the servo and esc in those locations. I wanted to mount the rx on the t-bar (just because I could), but the servo lead was too short. I was actually going to see if today's micro esc's could be mounted on the t-bar or very close to the motor to shorten up the wires... just an idea. Airplane guys are practially mounting their speedos to their motors. Your car's looking good too. I would love to try 'em all. The 4 cell flat concept is likely going to be the future. Especially if Touring goes that way. A driver could own 12th scale and Touring and have all the packs fit! Keep up the good work. Lets race some day. Seattle to Florida is about as far apart as one could get. But I have Snobirds on the schedule.
yeah,florida to washington,my radio starts glitching when i hit georgia.
i will be at the birds bro.im gonna be going all out for 1/12th.im running both 1/12th classes and a class of touring.i should be pretty busy i look forward to meeting you at the birds buddy.
__________________
Jason Breiner
BMI Racing
Team Associated
J Concepts
protc3 is offline   Reply With Quote
Old 12-04-2006, 03:54 PM   #22223
Tech Lord
 
protc3's Avatar
 
Join Date: Jun 2003
Location: Spring Hill,Florida
Posts: 10,813
Trader Rating: 13 (100%+)
Default

by the way brian,my buddy let me borrow an axle for when i did testing on my new car.i was like,hmm,this diff is pretty damn smoothe.after about 7 or 8 packs later,damn thing was still smoothe.i took it apart to just check it to see why is was staying so smoothe and i saw it had your thrust bearing kit in it.very nice bro.
__________________
Jason Breiner
BMI Racing
Team Associated
J Concepts
protc3 is offline   Reply With Quote
Old 12-04-2006, 04:08 PM   #22224
Tech Elite
 
Grenade10's Avatar
 
Join Date: Nov 2003
Location: Fort Collins, Colorado
Posts: 4,667
Trader Rating: 37 (100%+)
Default

Quote:
Originally Posted by protc3
by the way brian,my buddy let me borrow an axle for when i did testing on my new car.i was like,hmm,this diff is pretty damn smoothe.after about 7 or 8 packs later,damn thing was still smoothe.i took it apart to just check it to see why is was staying so smoothe and i saw it had your thrust bearing kit in it.very nice bro.
I'll second that, as I have one in each 1/12 scale car. Helped sell 3 more to other racers after they drove the car. One long time R/C racer from the midwest, now living here purchased one and thought this was the best change for a diff car he had ever tried!!

Nice Job Brian!!
__________________
Darkside, Sweep, BSR, Fantom, IGT Hobbies and IGT8
Byrons Fuel, ProtoForm Bodies & Futaba Radio Gear by Choice
Founding Member of CORRC .... 5280raceway
www.darksidems.com www.igthobbies.com www.IGT8.com
Grenade10 is offline   Reply With Quote
Old 12-04-2006, 04:24 PM   #22225
Tech Master
 
Join Date: Nov 2006
Location: New Bern, N.C.
Posts: 1,179
Trader Rating: 3 (100%+)
Default so how does that slapmaster flexplate work?

Ok, i'm not understanding how the tbar flexplate works. I see that it replaces the rear pivot ball and plastic cups. the pivot ball allows free movement of the tbar to pivot sideways as much as the tbar will flex, and also in the front to back orientation (although the tbar is stiffer in that direction). From looking at the photos of the little metal plate that goes in place of the tbar, it looks as if it will allow twisting for the sideways flex once allowed freely by the pivot ball. But it looks as if it would actually be stiffer in the front to back direction. Is that so? Or can you explain please how the flex plate works and what does that do the feel of the tbar and/or the behavior of the car on the track? it's pretty hard to understand from looking at the photos.

thanks,
Perry
vafactor is offline   Reply With Quote
Old 12-04-2006, 05:20 PM   #22226
Tech Elite
 
Join Date: Sep 2002
Location: Auburn, Wa
Posts: 2,267
Trader Rating: 2 (100%+)
Default

Perry with the relieved material it allows "mostly" free flexing of the t-plate it will not be exactly the same bbut if you run your tweek screws tight to the chassis then you do not have 100% free flex anyway. As for front to rear flex it acts mostly the same as a tplate. The key is how thin the material is.

I finally found some time to run at my home track SIR (indoor asphalt) The surface was loose from a track change and it had not "grooved" in yet. x2 Pinks were tough to get any stability out of. I added the doohickey in the rear and it was a fast comfortable drive from the x2 Pinks. Looking forward to getting some more time with the plate and the car.

BB call me I want to see the steering. I won't be able to make it to Tri-Cities this weekend due to Soccer.

Jason the car is looking real interesting. I might be out with Brian for Snowbirds, it would be good to meet finally.
__________________
UF1 Seattle - SPEEDWERKES - VBC Racing - Team ORCA
Difuser is offline   Reply With Quote
Old 12-04-2006, 06:30 PM   #22227
Tech Elite
 
nf_ekt's Avatar
 
Join Date: Aug 2005
Location: 22 Acacia Avenue
Posts: 4,631
Trader Rating: 113 (100%+)
Default

Quote:
Originally Posted by odpurple

There are a lot of parts and wires to fit on a 1/12th car with brushless, and its hard to make it neat. Guess what?! the systems were not designed with 1/12th in mind!
Yeah, especially not a 3.5!!! Dude Marcos your gonna need a push broom to get the parts off the track if you pipe that land missle going full speed. At least put the roll-over back on you got a 60 mph puck with that thing!
__________________
Up the Irons \m/

Powered by Hotwings, Rolling Rock, and the urge to race toy cars...
nf_ekt is offline   Reply With Quote
Old 12-04-2006, 06:36 PM   #22228
Tech Elite
 
odpurple's Avatar
 
Join Date: Dec 2002
Location: San Francisco
Posts: 2,187
Default

Quote:
Originally Posted by nf_ekt
...you got a 60 mph puck with that thing!
You're right, if he crashes he'll be pucked...
__________________
TOP Racing USA--OD Racing--Novak--Power Push--J Spec
odpurple is offline   Reply With Quote
Old 12-04-2006, 09:36 PM   #22229
Tech Lord
 
protc3's Avatar
 
Join Date: Jun 2003
Location: Spring Hill,Florida
Posts: 10,813
Trader Rating: 13 (100%+)
Default

i look forward to getting to meet all you guys that are going to the birds.we have probably the most friendly forum on RC tech in here.i would like to get to race and have a beer with you guys.should be a good time.

hey OD,you ever get some pics of the car you were working on?
__________________
Jason Breiner
BMI Racing
Team Associated
J Concepts
protc3 is offline   Reply With Quote
Old 12-04-2006, 09:39 PM   #22230
Tech Lord
 
protc3's Avatar
 
Join Date: Jun 2003
Location: Spring Hill,Florida
Posts: 10,813
Trader Rating: 13 (100%+)
Default

hey marcos,im gonna stay away from you at minreg bro. you and that 3.5 are gonna be a sight bro.im gonna stay with the 4.5.the 3.5 will stand the car on end if your diff is tight enough.
__________________
Jason Breiner
BMI Racing
Team Associated
J Concepts
protc3 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: 5 (3 members and 2 guests)
biz77, Danny-b23, slcf1
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 03:13 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