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 10-14-2010, 05:34 PM   #34921
Tech Champion
 
Join Date: Feb 2003
Location: Sydney, Australia
Posts: 5,310
Trader Rating: 1 (100%+)
Default

Quote:
Originally Posted by mdwaeracer View Post
Thats nice to know. is it keeping up with the Tekin?
Its funny that alot of.you guys keep saying that. Here in Oz almost every 12th is running something else to avoid the problems they were having with the Tekin. Currently BD's and SXX rule and the new hobbywing is growing in popularity as well. Its not that any of them are proven to be faster its more that the difference is not worth talking about but the Tekin has the most problems. If you want to go by performance then here in Oz the BD has destroyed everything and tekin is lucky to make an A final.
__________________
Blade: Andro Treiber H 79g AN
FH: Donic Bluefire M3 Max Blk
BH: Donic Bluefire M2 Max Red
Powered by Falco
Dragonfire is offline   Reply With Quote
Old 10-14-2010, 11:03 PM   #34922
Tech Elite
 
mangoman's Avatar
 
Join Date: Apr 2005
Location: Sydney, Australia
Posts: 2,981
Trader Rating: 11 (100%+)
Default

I think that is more driver quality as oppossed to the BD smashing the opposition.

Most LRP drivers in OZ have spent a fortune getting to the point of being fast without a receiver pack.

And what was bradd using the other week (i thought i heard it was a hobbywing) when he set the lap record. Thats the first meet i seem to recall him running 12th scale at since Nationals 2008.
__________________
Hot Bodies Cyclone!!!
www.smaracing.org
www.rchobbies.com.au - www.feralbatteries.com.au
craig mcphee ( WHERE'S MY BEER )
mangoman is offline   Reply With Quote
Old 10-15-2010, 03:54 AM   #34923
Tech Elite
 
Yokomo_Ant3's Avatar
 
Join Date: Apr 2008
Location: Australia
Posts: 2,390
Trader Rating: 29 (100%+)
Default

Quote:
Originally Posted by mangoman View Post
I think that is more driver quality as oppossed to the BD smashing the opposition.

Most LRP drivers in OZ have spent a fortune getting to the point of being fast without a receiver pack.

And what was bradd using the other week (i thought i heard it was a hobbywing) when he set the lap record. Thats the first meet i seem to recall him running 12th scale at since Nationals 2008.
I think Bradd was running the Hobbywing And he also did Nationals last year in 1/12.
__________________
Antoni Caretti

Team Schumacher - Team Scorpion - Sweep Racing - Bezerk RC - Adelaide RC
Yokomo_Ant3 is offline   Reply With Quote
Old 10-15-2010, 05:39 AM   #34924
Tech Elite
 
mangoman's Avatar
 
Join Date: Apr 2005
Location: Sydney, Australia
Posts: 2,981
Trader Rating: 11 (100%+)
Default

Ahh i remember he was testing a car (T-Bar with a LiPo pack mounted up the side of it) at last years nationals but i thought he didnt end up running the meet.
__________________
Hot Bodies Cyclone!!!
www.smaracing.org
www.rchobbies.com.au - www.feralbatteries.com.au
craig mcphee ( WHERE'S MY BEER )
mangoman is offline   Reply With Quote
Old 10-15-2010, 06:21 AM   #34925
Tech Elite
 
Yokomo_Ant3's Avatar
 
Join Date: Apr 2008
Location: Australia
Posts: 2,390
Trader Rating: 29 (100%+)
Default

Quote:
Originally Posted by mangoman View Post
Ahh i remember he was testing a car (T-Bar with a LiPo pack mounted up the side of it) at last years nationals but i thought he didnt end up running the meet.
I think he was testing a Yokomo 12L3 and then someone lent him a 12R5 i think
__________________
Antoni Caretti

Team Schumacher - Team Scorpion - Sweep Racing - Bezerk RC - Adelaide RC
Yokomo_Ant3 is offline   Reply With Quote
Old 10-15-2010, 06:33 AM   #34926
Tech Addict
 
=FLIP='s Avatar
 
Join Date: Jan 2009
Location: noooooooooo
Posts: 583
Trader Rating: 24 (100%+)
Default

Quote:
Originally Posted by Dragonfire View Post
Its funny that alot of.you guys keep saying that. Here in Oz almost every 12th is running something else to avoid the problems they were having with the Tekin. Currently BD's and SXX rule and the new hobbywing is growing in popularity as well. Its not that any of them are proven to be faster its more that the difference is not worth talking about but the Tekin has the most problems. If you want to go by performance then here in Oz the BD has destroyed everything and tekin is lucky to make an A final.
i have no problem with tekin in 12th infact it is fast and has massive runtime and troy stop the speedy dick measuring competition .all speedys are good now
bd is good ,lrp ver2 is good, tekin is good, hobbywing is good,novak kinetic 1s is good.
i think 12th comes down to driving. you could probably whip everyone with a 10.5 in ya car and a bar of soap for a speed controller.
__________________
--------------------------HOBBYWING----------PROAMP LIPOS----------------------------
-EAD- Racing NEED SPEED GET SOME EAD-
=FLIP= is offline   Reply With Quote
Old 10-15-2010, 06:37 AM   #34927
Tech Champion
 
Scottrik's Avatar
 
Join Date: Sep 2004
Location: Billings, MT
Posts: 6,122
Trader Rating: 238 (100%+)
Default

Quote:
Originally Posted by =FLIP= View Post
you could probably whip everyone with a 10.5 in ya car and a bar of soap for a speed controller.
My Irish Spring w/ v.222 suds-ware is faster. Pour a little bottled water on it, rub it a little and LOOK OUT!!

Only problem is I only get 2-3 race weekends and it's down to a little sliver that will never go away, but doesn't perform (suds up) as well so I have to break out a fresh bar.
__________________
Congressmen should wear uniforms like NASCAR drivers so we can identify their corporate sponsors.

THE REVOLUTION WILL NOT BE TELEVISED -Gil Scott-Heron (1949-2011)
Scottrik is offline   Reply With Quote
Old 10-15-2010, 12:55 PM   #34928
Tech Fanatic
 
Join Date: Apr 2004
Location: SF Bay Area
Posts: 814
Default

Quote:
Originally Posted by Scottrik View Post
My Irish Spring w/ v.222 suds-ware is faster. Pour a little bottled water on it, rub it a little and LOOK OUT!!

Only problem is I only get 2-3 race weekends and it's down to a little sliver that will never go away, but doesn't perform (suds up) as well so I have to break out a fresh bar.
I have found that if you use sparkling water, you get larger bubbles.
Crashby is offline   Reply With Quote
Old 10-15-2010, 01:10 PM   #34929
Tech Apprentice
 
Join Date: Feb 2007
Location: Ontario, Canada
Posts: 59
Default tires

I've had good luck with the CRC greylow, They don't chunk as easily as yellow. Is the Parma orange the equivalent (the shores match)? Does Jaco make an equivalent that is not on their website? Didn't Jaco come out with some new compounds a while back?
Tuner EM is offline   Reply With Quote
Old 10-15-2010, 02:23 PM   #34930
Tech Champion
 
JayBee's Avatar
 
Join Date: Mar 2004
Location: 12TH-MAN COUNTRY
Posts: 6,803
Trader Rating: 31 (100%+)
Default

You can also try BSR Gray-Whites. They are on the same wheel as CRC
__________________
R C 3 G R A F I X _ F U S I O N . G R A P H I X _ S E A T T L E - R/C - R A C E R S _ E M E R A L D C I T Y R C . C O M

A E - 12R5.2 _ S M - REV8 PRO
JayBee is offline   Reply With Quote
Old 10-15-2010, 02:29 PM   #34931
Tech Regular
 
TrevCoult's Avatar
 
Join Date: Sep 2008
Location: Worksop, Nottinghamshire, UK
Posts: 350
Default

Quote:
Originally Posted by Tuner EM View Post
I've had good luck with the CRC greylow, They don't chunk as easily as yellow. Is the Parma orange the equivalent (the shores match)? Does Jaco make an equivalent that is not on their website? Didn't Jaco come out with some new compounds a while back?
Parma Orange is the equivalent to the CRC Gray Low.

Jaco Orange is the same as Parma, Parma tires are made by Jaco, the wheel color is the only difference.

Trev
__________________
Schumacher Atom GT12
Schumacher Eclipse 12th
www.carsrcracing.co.uk
CARSrcracing.co.uk Webmaster
Schumacher Racing
TrevCoult is offline   Reply With Quote
Old 10-15-2010, 02:37 PM   #34932
Tech Elite
 
peter_robinson's Avatar
 
Join Date: Dec 2002
Location: On the Lake
Posts: 3,206
Trader Rating: 21 (100%+)
Default

They all get their foam from Jaco anyway.
__________________
For orders or inquiries, email sales@rc-trim.com. Follow RC-Trim on Twitter and Facebook

RC-Trim | Serpent USA | On-Point | Trinity | Revtech | ORCA | BSR | KO Propo | PT RC Racing Oil | WTRC | rcpitwhores.com
peter_robinson is offline   Reply With Quote
Old 10-15-2010, 02:47 PM   #34933
Tech Regular
 
TrevCoult's Avatar
 
Join Date: Sep 2008
Location: Worksop, Nottinghamshire, UK
Posts: 350
Default

Quote:
Originally Posted by peter_robinson View Post
They all get their foam from Jaco anyway.
CRC do NOT get their foam from Jaco. Frank will confirm.

Trev
__________________
Schumacher Atom GT12
Schumacher Eclipse 12th
www.carsrcracing.co.uk
CARSrcracing.co.uk Webmaster
Schumacher Racing
TrevCoult is offline   Reply With Quote
Old 10-15-2010, 03:07 PM   #34934
Tech Champion
 
JayBee's Avatar
 
Join Date: Mar 2004
Location: 12TH-MAN COUNTRY
Posts: 6,803
Trader Rating: 31 (100%+)
Default

I think John from BSR does Franks (CRC) foams....
__________________
R C 3 G R A F I X _ F U S I O N . G R A P H I X _ S E A T T L E - R/C - R A C E R S _ E M E R A L D C I T Y R C . C O M

A E - 12R5.2 _ S M - REV8 PRO
JayBee is offline   Reply With Quote
Old 10-15-2010, 03:08 PM   #34935
Tech Lord
 
protc3's Avatar
 
Join Date: Jun 2003
Location: Spring Hill,Florida
Posts: 10,813
Trader Rating: 13 (100%+)
Default

Dont they go through BSR?
__________________
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: 3 (2 members and 1 guests)
Grizzbob, vr01
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 12:58 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