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 07-01-2003, 10:10 PM   #3271
Tech Elite
 
peter_robinson's Avatar
 
Join Date: Dec 2002
Location: On the Lake
Posts: 3,206
Trader Rating: 21 (100%+)
Default

the track that my store has is a very high grip asphalt, and we just got started running a 12th scale class (stock and mod) and most guys have been happy with running their caret tires (purple and greys) up until now, people want to start branching out in tires.

just wondering what the starting point in tires is for asphalt and what tires to stock besides purple and grey.

much thanks.

peter
__________________
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 07-02-2003, 12:05 AM   #3272
Tech Adept
 
RC4SALE's Avatar
 
Join Date: Jun 2003
Location: ROAR Region 1
Posts: 175
Default

CRC !
RC4SALE is offline   Reply With Quote
Old 07-02-2003, 01:12 AM   #3273
Tech Apprentice
 
Join Date: May 2003
Posts: 71
Default

I did some looking around, and CRC says that "all parts are completely compatible with associated 12lc/l3. Wouldn't that make them technically the same car?
King Kong is offline   Reply With Quote
Old 07-02-2003, 01:17 AM   #3274
Tech Champion
 
Korey Harbke's Avatar
 
Join Date: Oct 2002
Location: Redmond, WA
Posts: 6,053
Trader Rating: 13 (100%+)
Default

No, if you look at them the rear suspensions are way different.
__________________
Pro Spec America/Apex RC - Team ORCA - Awesomatix USA - Roche RC USA - AVID - Sweep - Protoform - Pro-One RC - Slapmaster Tools - Hebiki Design Works - Turtlemaster Racing - Seattle RC Racers - Timezone Hobbies
Korey Harbke is offline   Reply With Quote
Old 07-02-2003, 01:58 AM   #3275
Tech Apprentice
 
Join Date: Feb 2003
Location: derbyshire, UK
Posts: 82
Default

wheel diameters are the same, tire & wheel diamteres are different, should be between 3mm and 5mm difference front to back, front being smaller.

how about all you guys posting some pics of your pride and joy pan cars? i like looking at other people cars. all cars welcome! lol, and your bodies too, im trying to think up a signature paint scheme!

matt rice
rice98w is offline   Reply With Quote
Old 07-02-2003, 05:23 AM   #3276
Tech Master
 
stormperson's Avatar
 
Join Date: Sep 2001
Location: MA
Posts: 1,185
Trader Rating: 1 (100%+)
Send a message via AIM to stormperson
Default

peter- the standard issue for aspalt is normally purple and pinks (pinks being softer than greys, so it gives the car a more stuck, less nervous feeling). at the paved nats last week i ended up running granite rears (which are basically whites with a hard outside edge, similar to the way plaids are with sedan tires) however they wore very fast and really arent a good solution.

i would try to make purple fronts (or double pinks if you need ALOT of steering) with pink rears work. it should provide good tire life and traction. the thing alot of guys spend time experimenting with is tire compounds. i found that paragon works pretty well on asphalt, although alot of guys still use suntan lotion, or a wide variety of trinity traction compounds (they make 5 dozen of them, lol)

sushi/kong- the CRC 6 pack is a t-bar car that uses AE t-bars, front end and rear bulkhead (with their own axle, but like all non-corrally 12th scales its interchanglable). the cars use different chassis and basically all different graphite piecies. the 6 pack does not have the disks, instead it has damper tubes and the ability to use side springs (although if you want your car to handle well, do not install them, and this tip comes directly from a cleveland winner in mod 12th scale who ran the car when he won)

as far as which car i would suggest running...

-asphalt: corrally (the thing is just stuck, but whatever you do, dont run it on carpet, it is awful)

-carpet: speedmerchant rev. 3 (for reasons discussed a thousand times over in recently past pages)

i would only run a t-bar car if i ran mod, in stock on carpet cars with side links absolutly dominate (knife and rev. 3).
stormperson is offline   Reply With Quote
Old 07-02-2003, 07:38 AM   #3277
Tech Elite
 
CypressMidWest's Avatar
 
Join Date: May 2003
Location: Central Ohio
Posts: 4,603
Trader Rating: 1 (100%+)
Default

stormperson: I know Smyka's done quite well running the Springs rather tha tweak screws in the T-bar. I know that you cant run both the screws and the springs, otherwise you'll never be able to set the tweak properly.
__________________
Team CRC, Access Race Place, US Indoor Champs, CD SUPERPRO, RK Designs, Cypress, Founder and lead instructor of the Ian Ruggles Negative Reinforcement Driver Training Program, enroll now.....
CypressMidWest is offline   Reply With Quote
Old 07-02-2003, 08:26 AM   #3278
Tech Master
 
stormperson's Avatar
 
Join Date: Sep 2001
Location: MA
Posts: 1,185
Trader Rating: 1 (100%+)
Send a message via AIM to stormperson
Default

Smyka has done quite well!

I guess i missed something then when it was explained to me, lol. however smyka runs stock where you can get away with a stiffer rear end, so that could probably explain the possible difference between tweak screws and side springs, or it could just be personal preference.
stormperson is offline   Reply With Quote
Old 07-02-2003, 08:30 AM   #3279
Tech Elite
 
Join Date: Sep 2001
Location: Newville,Pa
Posts: 2,152
Trader Rating: 7 (100%+)
Default

Quote:
i would only run a t-bar car if i ran mod, in stock on carpet cars with side links absolutly dominate (knife and rev. 3)
Stormperson- not so at the local carpet track the t-bar cars tear up in stock and mod....
__________________
G's RC Raceway- Best off-road track on the east coast...period!!!

Pitman for Team Dallas Austin...
IMPACTPLAYR is offline   Reply With Quote
Old 07-02-2003, 09:07 AM   #3280
Tech Elite
 
CypressMidWest's Avatar
 
Join Date: May 2003
Location: Central Ohio
Posts: 4,603
Trader Rating: 1 (100%+)
Default

Actually if you run orange or blue side springs you're set-up significantly softer than even an .063 T-bar with screws. My best friend's a Six-pack driver, and we've done some heavy testing to see which way works better.
__________________
Team CRC, Access Race Place, US Indoor Champs, CD SUPERPRO, RK Designs, Cypress, Founder and lead instructor of the Ian Ruggles Negative Reinforcement Driver Training Program, enroll now.....
CypressMidWest is offline   Reply With Quote
Old 07-02-2003, 10:19 AM   #3281
Tech Fanatic
 
Join Date: Mar 2002
Location: Indianapolis, IN
Posts: 864
Default

Impact - where is your local track?
davidl is offline   Reply With Quote
Old 07-02-2003, 10:50 AM   #3282
Tech Elite
 
Join Date: Sep 2001
Location: Newville,Pa
Posts: 2,152
Trader Rating: 7 (100%+)
Default

The Track in Gaithersburg, MD...... Most guys run either the 6-pack with a .075 t-bar and screws, or the L3 with dampertubes..... a few run the Corally (heavily modified, Switchblade, or Yokomo.....very few run the carpet knife or REV.3......

I feel the advatage ofthe T-bar is that it makes the rear suspension "snap back' much quicker than the tweak springs..... I have tried my 6-pack with the srings and it felt a little sluggish during quick transitions...... However on sweepers it felt more planted, and easier to drive.

BTW: I am planning on triing the Rev.3 this winter when Hobbytown opens their carpet track...... but will keep my BR 6-pack/Yokomo hybrid...... and my Brother will be getting a 1/12th....

I'm not triing t stir "stuff" just stating the facts (from the track) and my opinion on the feel of the car....
__________________
G's RC Raceway- Best off-road track on the east coast...period!!!

Pitman for Team Dallas Austin...
IMPACTPLAYR is offline   Reply With Quote
Old 07-02-2003, 11:39 AM   #3283
Tech Elite
 
CypressMidWest's Avatar
 
Join Date: May 2003
Location: Central Ohio
Posts: 4,603
Trader Rating: 1 (100%+)
Default

impact: If the Car felt sluggish, the side springs you were running were too soft. Wolfe goes all the way up to purple, which are extremely stiff. Which springs did you run?
__________________
Team CRC, Access Race Place, US Indoor Champs, CD SUPERPRO, RK Designs, Cypress, Founder and lead instructor of the Ian Ruggles Negative Reinforcement Driver Training Program, enroll now.....
CypressMidWest is offline   Reply With Quote
Old 07-02-2003, 01:28 PM   #3284
Tech Elite
 
peter_robinson's Avatar
 
Join Date: Dec 2002
Location: On the Lake
Posts: 3,206
Trader Rating: 21 (100%+)
Default

Quote:
Originally posted by stormperson
peter- the standard issue for aspalt is normally purple and pinks (pinks being softer than greys, so it gives the car a more stuck, less nervous feeling). at the paved nats last week i ended up running granite rears (which are basically whites with a hard outside edge, similar to the way plaids are with sedan tires) however they wore very fast and really arent a good solution.

i would try to make purple fronts (or double pinks if you need ALOT of steering) with pink rears work. it should provide good tire life and traction. the thing alot of guys spend time experimenting with is tire compounds. i found that paragon works pretty well on asphalt, although alot of guys still use suntan lotion, or a wide variety of trinity traction compounds (they make 5 dozen of them, lol)

sushi/kong- the CRC 6 pack is a t-bar car that uses AE t-bars, front end and rear bulkhead (with their own axle, but like all non-corrally 12th scales its interchanglable). the cars use different chassis and basically all different graphite piecies. the 6 pack does not have the disks, instead it has damper tubes and the ability to use side springs (although if you want your car to handle well, do not install them, and this tip comes directly from a cleveland winner in mod 12th scale who ran the car when he won)

as far as which car i would suggest running...

-asphalt: corrally (the thing is just stuck, but whatever you do, dont run it on carpet, it is awful)

-carpet: speedmerchant rev. 3 (for reasons discussed a thousand times over in recently past pages)

i would only run a t-bar car if i ran mod, in stock on carpet cars with side links absolutly dominate (knife and rev. 3).
thanks, before i asked i had already taken a guess at purple and pink and ordered those into the store, i think that they will work great.

also, if there is anybody who wants to post i good high grip asphalt setup for the yokomo, go ahead!

peter
__________________
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 07-02-2003, 01:30 PM   #3285
Tech Elite
 
Join Date: Sep 2002
Location: Auburn, Wa
Posts: 2,267
Trader Rating: 2 (100%+)
Default

The Rev 3 also I need to keep up with Pete......
I should be seeing the car early next week.
__________________
UF1 Seattle - SPEEDWERKES - VBC Racing - Team ORCA
Difuser 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 (1 members and 1 guests)
gmintimidator
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 12:05 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