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 12-16-2002, 07:28 AM   #2056
Tech Apprentice
 
Join Date: Aug 2002
Posts: 61
Default

RC12L3 is very common 12th car. Most 12th car evolve from AE RC12L series so you can't go wrong with it. Other good car are CRC Carpet knife, Speed Merchant, Yokomo YRX-12, Trinity Switch blade and Corally. You can find more information about other cars in this thread. The first 3 use the RC12L3 front end. The Corally is the most difference from other cars and use it own wheel mounting system. If you plans to use 6 cells then you might have to choose RC12L3 since other car can use only 4 cells. Corally can use 6 cells stick pack but I don't link that. CRC also have the 6 cells car called 6-pack but I don't think that it's much enough difference from RC12L3 to justified the advantage of part availibility of the AE cars. You can see that I am a little bit biased .

I must admit that I'm new to 12th too. Good luck with your choice(s) and wellcome to the great 12th scale world.

tifosi

BTW I think that all 12th car are good.
tifosi is offline   Reply With Quote
Old 12-16-2002, 04:16 PM   #2057
Tech Regular
 
RCsilly's Avatar
 
Join Date: Dec 2002
Location: Redford Mi. Trying to keep up with Tim Stamper
Posts: 300
Post

Does anyone know if a company is making a replacment chassis for the rc12l3 that mounts four batteries in line ?

Thanks BOB
RCsilly is offline   Reply With Quote
Old 12-16-2002, 05:08 PM   #2058
Tech Adept
 
Join Date: Dec 2002
Location: Oregon
Posts: 103
Default

well where i wace you can only run 4 cells so my choices are pretty open i see. i really like the yokomo yrx-12 and the rc12l3. is there that much difference bettwen the 2 cars perfomance, parts avalbility, and price, ect.?
Thanks
blue micro is offline   Reply With Quote
Old 12-16-2002, 05:18 PM   #2059
Tech Elite
 
litespeed-dom's Avatar
 
Join Date: Oct 2002
Location: Beaverton, Oregon
Posts: 3,990
Trader Rating: 4 (100%+)
Default

$220 for the Yok vs. $150 for the L3. BUT.... with the Yok you get a body, hinge pins, king pins, top turnbuckles are all titanium, and aluminum rear pods that are even lower than IRS pods, Yok wheels that'll never break, so it's all worth it by the time you drop all that into a L3.

From 3 races experience, the Yok IS a faster car. I got 2 friends that are driving the Yok, and agreed on the same thing, you can carry so much more speed into turns. And it just snap out of the corners, no hesitation at all, it transitions very well.
__________________
Team Kyosho America - Team Br00d Racing - Team R/C Plus - GQ Racing Tyres - Slapmaster Tools - FSX Racing
litespeed-dom is offline   Reply With Quote
Old 12-16-2002, 05:41 PM   #2060
Tech Adept
 
Join Date: Dec 2002
Location: Oregon
Posts: 103
Default

does the yokomo come with the silver grafite chassis? i really like it.
litespeed-dom- i think i saw you at rcplus on saterday dec. 7, or atleast i saw a yokomo that looked exactly like urs.
Thanks
blue micro is offline   Reply With Quote
Old 12-16-2002, 05:43 PM   #2061
Tech Elite
 
litespeed-dom's Avatar
 
Join Date: Oct 2002
Location: Beaverton, Oregon
Posts: 3,990
Trader Rating: 4 (100%+)
Default

Quote:
Originally posted by blue micro
does the yokomo come with the silver grafite chassis? i really like it.
litespeed-dom- i think i saw you at rcplus on saterday dec. 7, or atleast i saw a yokomo that looked exactly like urs.
Thanks
Yeah, it comes with the silver chassis.

Yeah, I was the only one driving the Yok at Rcplus that day.
__________________
Team Kyosho America - Team Br00d Racing - Team R/C Plus - GQ Racing Tyres - Slapmaster Tools - FSX Racing
litespeed-dom is offline   Reply With Quote
Old 12-16-2002, 06:45 PM   #2062
Tech Addict
 
rosecity's Avatar
 
Join Date: Nov 2002
Location: I Smell a Rat
Posts: 731
Default new 12th scaler?

Blue micro are you going to join us old f@rts on the 12th scale circuit?
rosecity is offline   Reply With Quote
Old 12-17-2002, 12:15 AM   #2063
Tech Adept
 
Join Date: Dec 2002
Location: Oregon
Posts: 103
Default

lightspeed-dom-ur car is really sick!
rose city-im thinking bou it because the sedans are to expensive right now, plus theres tomany hopups and i would end up buyin them all lol.
blue micro is offline   Reply With Quote
Old 12-17-2002, 03:01 AM   #2064
Tech Fanatic
 
ilaybrk's Avatar
 
Join Date: Sep 2002
Location: bealeton VA
Posts: 955
Default

what is your opinion on monster for 12th I ran and thought it was a flat motre 43 role out the guys runing p2k run 44-45 role out and they have more punch
ilaybrk is offline   Reply With Quote
Old 12-17-2002, 04:41 AM   #2065
Tech Fanatic
 
Join Date: Mar 2002
Location: Indianapolis, IN
Posts: 864
Default

Jack, you have to find a way to reduce the current draw, then go down at least one tooth. You are geared too high.
davidl is offline   Reply With Quote
Old 12-17-2002, 07:01 AM   #2066
Tech Fanatic
 
mike5009's Avatar
 
Join Date: Sep 2002
Posts: 912
Trader Rating: 2 (100%+)
Send a message via AIM to mike5009
Default

jack, i was running the monster stock sat... also and had mega punch. i just need to find the right set up for this corally of mine not enough steering. i was running a 42 roll out and i could pull anybody, i just dont have the steering i need to get into the corners, but the car pulls hard from the center out. but it was not bad for being the 2nd time out with it. i think perry was not running any higher than a 43 roll out also. you running this sat... at the track, jack??????? if so see ya there
mike5009 is offline   Reply With Quote
Old 12-17-2002, 09:55 PM   #2067
Tech Elite
 
Jeff Werner's Avatar
 
Join Date: Sep 2001
Location: Wichita, KS
Posts: 2,186
Trader Rating: 13 (100%+)
Send a message via Yahoo to Jeff Werner
Default

Guys I am interested in the Speedmerchant 12th car...cannot find it anywhere for sale online. Could anyone help me??? X-mas is coming and my wife needs some ideas....and any info on it would be great!

Jeff
Jeff Werner is offline   Reply With Quote
Old 12-17-2002, 10:22 PM   #2068
Tech Adept
 
Avink1's Avatar
 
Join Date: May 2002
Location: Coon Rapids, MN
Posts: 159
Send a message via AIM to Avink1
Default

rcsilly, you can buy the yokomo chassis it's a direct fit for the associated. you don't have to buy the silver chassis either you can get the normal black chassis at about half the price of the silver one.
Avink1 is offline   Reply With Quote
Old 12-17-2002, 11:45 PM   #2069
Tech Initiate
 
Join Date: Nov 2002
Location: St Albert,Ab,Ca.
Posts: 20
Lightbulb Speed M

Jeff, YA GOTTA DO YOUR HOME WORK!!!!!!!
Go to RC Teck Home page,Click on web links,click on speed merchant. Good luck MERRY CHRISTMAS
OLD FART is offline   Reply With Quote
Old 12-18-2002, 02:12 AM   #2070
Tech Regular
 
RCsilly's Avatar
 
Join Date: Dec 2002
Location: Redford Mi. Trying to keep up with Tim Stamper
Posts: 300
Default

Thanks for the info Avink1 , I'll look into it .
Associmomo........ Yokomociated ? LOL
Bob
RCsilly 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 05:57 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