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 01-08-2009, 08:29 PM   #30301
Tech Addict
 
mauromj's Avatar
 
Join Date: May 2007
Location: Spokane Wa
Posts: 571
Trader Rating: 20 (100%+)
Default

Any idea when it will be out brian? And estimated cost?
mauromj is offline   Reply With Quote
Old 01-08-2009, 10:21 PM   #30302
Tech Elite
 
Slapmaster6000's Avatar
 
Join Date: Sep 2004
Location: Edmonds, Wash.
Posts: 2,947
Trader Rating: 14 (100%+)
Default

I currently have MS3 conversion kits without rear ends for $100, but I would wait. I suspect that I should have the remaining parts in less then two weeks. The kits with b/l rr ends will be $135. Ashford Hobby has been a big supporter, I'll give Robert a heads up. You can also order directly off the website; www.slapmastertools.com Keep in mind, the latest version is not listed on there ... yet. The MS3 is still a conversion kit and not a full 100% kit. A "near roller" could be in the future where a racer would add their favorite front end, pop on their shock and slide their axle. But there seems to be this fear of t-bars and old round cells. Fear not, as we are going to be with this platform for a while!

I have set up sheets on Excel for online data share. Even got t-shirts!
Brian
Slapmaster6000 is offline   Reply With Quote
Old 01-08-2009, 10:25 PM   #30303
Tech Addict
 
mauromj's Avatar
 
Join Date: May 2007
Location: Spokane Wa
Posts: 571
Trader Rating: 20 (100%+)
Default

hmm, so does that mean you could sacrifice the rear end kit for 35$? If so im in!
mauromj is offline   Reply With Quote
Old 01-08-2009, 11:03 PM   #30304
Tech Elite
 
Slapmaster6000's Avatar
 
Join Date: Sep 2004
Location: Edmonds, Wash.
Posts: 2,947
Trader Rating: 14 (100%+)
Default

Quote:
Originally Posted by mauromj View Post
hmm, so does that mean you could sacrifice the rear end kit for 35$? If so im in!
It's possible that I can do a carbon only (3 parts) + screws for that. Bulkheads are extra. But I am looking into that kind of package. As a heads up, the new balanced rear end moves the motor bulkhead closer to the diff. Using a standard IRS or CRC axle will work with Prisms, but you will need a short diff hub for Pro38's and Highrollers.
Brian
Slapmaster6000 is offline   Reply With Quote
Old 01-08-2009, 11:13 PM   #30305
Tech Addict
 
mauromj's Avatar
 
Join Date: May 2007
Location: Spokane Wa
Posts: 571
Trader Rating: 20 (100%+)
Default

What do the bulkheads go for?
mauromj is offline   Reply With Quote
Old 01-10-2009, 11:00 AM   #30306
Tech Initiate
 
Join Date: Dec 2008
Posts: 23
Trader Rating: 1 (100%+)
Default

What bodies will fit 1/12 scales other than the wedge style? Thanks.
B.L.S. is offline   Reply With Quote
Old 01-10-2009, 11:10 AM   #30307
Tech Champion
 
hanulec's Avatar
R/C Tech Elite Subscriber
 
Join Date: Sep 2007
Location: @ the post office
Posts: 8,009
Trader Rating: 23 (100%+)
Default

Quote:
Originally Posted by B.L.S. View Post
What bodies will fit 1/12 scales other than the wedge style? Thanks.
basically there are two types of 1/12th scale racing bodies made today: IMSA GTP/Group C/ALMS/Daytona Prototype styled (wedge) and Nascar/Stock car bodies. there are not any Corvettle/Porsche 911 bodies in 1/12th --- but there is a new class call WorldGT based upon pan cars that runs Sport Car bodies: http://worldgtrc.com/

actually, i have some videos of WorldGT race cars from the NorthEast Grand Slam series here: http://www.youtube.com/view_play_lis...7DE6D815858A7F
__________________
FJ / ROAR #2-122945 / Shop@ Awesomatix USA / Wild Turbo Fan / Mon-Tech Racing / RocheRC USA / Side Piece /
LRP / John's BSR Tires / TeamEAM / TQ Wire / R1 / Team Scream / PCR / MIX
RacerLog wiki Awesomatix A700 / 2wd offroad 4 life

Last edited by hanulec; 01-10-2009 at 11:13 AM. Reason: adding videos
hanulec is offline   Reply With Quote
Old 01-10-2009, 11:34 AM   #30308
Tech Initiate
 
Join Date: Dec 2008
Posts: 23
Trader Rating: 1 (100%+)
Default

Who makes the Stock car bodies? and would it possible to fit somthing like this on one?
http://www3.towerhobbies.com/cgi-bin...?&I=LXNAV1&P=0
And yes it will be raced
B.L.S. is offline   Reply With Quote
Old 01-10-2009, 12:03 PM   #30309
Tech Regular
 
DPowell's Avatar
 
Join Date: Apr 2003
Location: Denver, CO
Posts: 454
Trader Rating: 3 (100%+)
Default

A VW bus body would be cooler.

http://www.kamtec.co.uk/products.php...=62&prod_cat=9

You could add an incense burner to the inside of the body and just cruise the track. You'd win your heat since everyone else would be crying from laughing so hard.
__________________
www.powellracingcomponents.com
**Record setting carbon fiber**

Speedmerchant and TOP USA dealer.
DPowell is offline   Reply With Quote
Old 01-10-2009, 12:57 PM   #30310
Tech Initiate
 
Join Date: Dec 2008
Posts: 23
Trader Rating: 1 (100%+)
Default

Haha thats awsome, think im sold on the 69 Dodge charger. Looks like it will fit.
http://www.kamtec.co.uk/products.php...=17&prod_cat=9
hmm 1/12 VTA
B.L.S. is offline   Reply With Quote
Old 01-10-2009, 02:37 PM   #30311
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 DPowell View Post
A VW bus body would be cooler.

http://www.kamtec.co.uk/products.php...=62&prod_cat=9

You could add an incense burner to the inside of the body and just cruise the track. You'd win your heat since everyone else would be crying from laughing so hard.

PRC - I think there might be a VW Beetle body still in the "Man Room" closet. I'll have to look!!!

FYI back in the late 80's we ran a series that ran GT bodies, so we had Porsche 944's, Nissian 280Z, Audi 100's, ..... VW Beetle that ran. Still have my Porsche and a few un painted one's waiting for a shelf chassis.
__________________
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 01-10-2009, 02:42 PM   #30312
Tech Addict
 
tim fry's Avatar
 
Join Date: Aug 2004
Location: Kent UK
Posts: 524
Trader Rating: 1 (100%+)
Default

I seem to remember a few years ago that there was a few saloon car bodies at my local shop. I remember they had one painted and fitted to a 12th pan car on diplay it was a BMW and it looked awesome. It looked similar to the Pikes Peak type cars. They also had Zak Speed Ford Capri look a likes.

Are any of these still available?
tim fry is offline   Reply With Quote
Old 01-10-2009, 02:49 PM   #30313
Tech Champion
 
hanulec's Avatar
R/C Tech Elite Subscriber
 
Join Date: Sep 2007
Location: @ the post office
Posts: 8,009
Trader Rating: 23 (100%+)
Default

Quote:
Originally Posted by B.L.S. View Post
Who makes the Stock car bodies? and would it possible to fit somthing like this on one?
http://www3.towerhobbies.com/cgi-bin...?&I=LXNAV1&P=0
And yes it will be raced
Check out the list of ROAR approved bodies: http://roarracing.com/approvals/sbody.php
__________________
FJ / ROAR #2-122945 / Shop@ Awesomatix USA / Wild Turbo Fan / Mon-Tech Racing / RocheRC USA / Side Piece /
LRP / John's BSR Tires / TeamEAM / TQ Wire / R1 / Team Scream / PCR / MIX
RacerLog wiki Awesomatix A700 / 2wd offroad 4 life
hanulec is offline   Reply With Quote
Old 01-10-2009, 03:05 PM   #30314
Tech Elite
 
rx7ttlm's Avatar
 
Join Date: Jul 2004
Location: Portland, OR
Posts: 2,521
Trader Rating: 30 (100%+)
Default rules update

just thought I would share a rules update

01/06/09 1/12th Scale Min Weight
The ROAR Executive Committee has approved the request to increase the 1/12th scale min weight, rule 8.10.3.1, from 794gr to 865gr for the 2009 ROAR On Road Carpet Nationals, hosted by The Gate at the Holiday Inn in Strongsville, OH.
__________________
|Team Xray | RC America |MAX Engines | Hudy |Jaco | KO PROPO |"From Slovakia with Love" T3 | Team Timezone |

Timezone Raceway & Hobbies - http://www.timezonehobbies.com
rx7ttlm is offline   Reply With Quote
Old 01-10-2009, 04:12 PM   #30315
Tech Adept
 
xlamontx's Avatar
 
Join Date: Jun 2005
Location: A track near you...
Posts: 208
Trader Rating: 15 (100%+)
Default

Quote:
Originally Posted by B.L.S. View Post
Who makes the Stock car bodies? and would it possible to fit somthing like this on one?
http://www3.towerhobbies.com/cgi-bin...?&I=LXNAV1&P=0
And yes it will be raced
Stormer Hobbies have a 1/12 scale Monte Carlo body (part # MCA95). It looks like a stock car.
__________________
::-::-::-::-::-::-::-::-::-::
"Have Car ~ Will Travel"
XLX Racing (Est. 1995)
::-::-::-::-::-::-::-::-::-::

TRACK MASTERS R/C ~ TEAM DRIVER

MSRA-Racing.com
xlamontx 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: 2 (0 members and 2 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 03:01 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