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 07-24-2007, 10:37 AM   #26371
Tech Master
 
EricF's Avatar
 
Join Date: Jun 2003
Location: AZ
Posts: 1,515
Default

Quote:
Originally Posted by Mutabarucka View Post
I don't know which rock you crawl from under but I did not state which kit and which parts are hard to get a hold of, I said get a kit where you can find parts, so if you can't read and understand what you read keep your opion to your self. There is a program name COMPENSATORY EDUCATION if you want I could enroll you.
Wow, you should seek anger management classes you're right you didn't say which kit. My bad.

"...the DB and I gave it a try and it was OK but trying to get one is like going in your back yard to dig for gold..."
EricF is offline   Reply With Quote
Old 07-24-2007, 10:47 AM   #26372
Tech Champion
 
Scottrik's Avatar
 
Join Date: Sep 2004
Location: Billings, MT
Posts: 6,121
Trader Rating: 238 (100%+)
Default

Quote:
Originally Posted by Mutabarucka View Post
I don't know which rock you crawl from under but I did not state which kit and which parts are hard to get a hold of, I said get a kit where you can find parts, so if you can't read and understand what you read keep your opion to your self. There is a program name COMPENSATORY EDUCATION if you want I could enroll you.
Wow...120 posts and he's on the attack.

Credibility gone. Have a nice life.
__________________
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 07-24-2007, 11:02 AM   #26373
Tech Master
 
t9dragon's Avatar
 
Join Date: Jan 2004
Location: Oregon
Posts: 1,197
Trader Rating: 12 (100%+)
Send a message via ICQ to t9dragon Send a message via AIM to t9dragon Send a message via MSN to t9dragon Send a message via Yahoo to t9dragon
Default

Is there anymore 1/12 forums or chat sites?
t9dragon is offline   Reply With Quote
Old 07-24-2007, 11:03 AM   #26374
Tech Adept
 
Join Date: Nov 2005
Posts: 192
Default

Quote:
Originally Posted by Scottrik View Post
Wow...120 posts and he's on the attack.

Credibility gone. Have a nice life.

Dude get a life Credibility for racing RC cars, now that is funny I do this once a year and it is for fun you guys take this rc stuff like it's life, I hope when the real world hit you, you can stand up to it.
Mutabarucka is offline   Reply With Quote
Old 07-24-2007, 11:15 AM   #26375
Tech Champion
 
Scottrik's Avatar
 
Join Date: Sep 2004
Location: Billings, MT
Posts: 6,121
Trader Rating: 238 (100%+)
Default

Case closed.

Now--what do I need to do/know to prepare for my first ever race on asphalt? 19T, big track. Do you run ride height a bit higher as the surface isn't carpet smooth, or...?

Scottrik
__________________
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 07-24-2007, 11:33 AM   #26376
Tech Elite
 
odpurple's Avatar
 
Join Date: Dec 2002
Location: San Francisco
Posts: 2,187
Default

Quote:
Originally Posted by Scottrik View Post
Case closed.

Now--what do I need to do/know to prepare for my first ever race on asphalt? 19T, big track. Do you run ride height a bit higher as the surface isn't carpet smooth, or...?

Scottrik
It's nice to hear that you are going outdoors A little sun will do you some good and maybe you can get the smell of Paragon out of your clothes

I set the ride height for asphalt so the car doesn't bottom out to much, usually no lower than 4mm. We usually run Pink rears and Magenta fronts, if the bite is low then Purple fronts. I don't have a clue what to suggest for setup for the Darkside car, but basically soften up the rear end. Have fun and don't forget the sunscreen
odpurple is offline   Reply With Quote
Old 07-24-2007, 11:42 AM   #26377
Moderator
 
Pro ten Holland's Avatar
 
Join Date: May 2003
Location: Druten/Holland (Europe)
Posts: 1,658
Trader Rating: 1 (100%+)
Default

Also one other tip: use tires that haven't been run on carpet yet. Or at least clean 'em thouroughly with diswash soap.
In my experience you'll be searching for traction if you don't.
Pro ten Holland is offline   Reply With Quote
Old 07-24-2007, 11:44 AM   #26378
Tech Champion
 
Scottrik's Avatar
 
Join Date: Sep 2004
Location: Billings, MT
Posts: 6,121
Trader Rating: 238 (100%+)
Default

Race is the Sizzler in Seattle/Tacoma so I'll bring my umbrella and galoshes

Saving the sunscreen for here...heading into yet another triple-digit temp day. I was outside all weekend in 100+ doing race director and announcing duties for the Montana State Offroad Champs. Ay yi yi...fat guys from Seattle STILL ain't used to this heat. Or the sub-zero in winter.

Thanks for the pointers. I'll set up both the Darkside and one of the 3.2R's. What I should PROBABLY do is put the YRX back together so I have a T-bar car...but I hate T-bars

Oh yeah, we don't use Paragon here...scent-free for 2 years now. What will I want to use on asphalt?
__________________
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 07-24-2007, 11:45 AM   #26379
Tech Master
 
EricF's Avatar
 
Join Date: Jun 2003
Location: AZ
Posts: 1,515
Default

Alright, this seems silly to me... generally yoou need more steering on asphault right? So why go to a harder front tire (purple vs. magenta), or is this change made do to the grip/ heat characteristics of purples?

E
EricF is offline   Reply With Quote
Old 07-24-2007, 11:45 AM   #26380
Tech Champion
 
Scottrik's Avatar
 
Join Date: Sep 2004
Location: Billings, MT
Posts: 6,121
Trader Rating: 238 (100%+)
Default

Quote:
Originally Posted by Pro ten Holland View Post
Also one other tip: use tires that haven't been run on carpet yet. Or at least clean 'em thouroughly with diswash soap.
In my experience you'll be searching for traction if you don't.
Hey...that's good to know! Thanks.

Quote:
Originally Posted by EricF
Alright, this seems silly to me... generally yoou need more steering on asphault right? So why go to a harder front tire (purple vs. magenta), or is this change made do to the grip/ heat characteristics of purples?
If I was going to guess, I'd say that if grip is low and you're losing the rear end that if you go a little firmer on the front tires you'll be tightening the car up a bit and making it more driveable.
__________________
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 07-24-2007, 12:17 PM   #26381
Tech Elite
 
CypressMidWest's Avatar
 
Join Date: May 2003
Location: Central Ohio
Posts: 4,603
Trader Rating: 1 (100%+)
Default

Quote:
Originally Posted by Scottrik View Post
Oh yeah, we don't use Paragon here...scent-free for 2 years now. What will I want to use on asphalt?
Here's my asphalt ritual:

Paragon soak for 15 mins. don't wipe it off, then apply Coppertone SPF50 sunscreen, let it soak for another 15 mins. Wipe off thoroughly, then enjoy the grip.......
__________________
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 07-24-2007, 12:29 PM   #26382
Tech Fanatic
 
ttso's Avatar
 
Join Date: May 2004
Posts: 900
Trader Rating: 1 (100%+)
Default

Quote:
Originally Posted by CypressMidWest View Post
Here's my asphalt ritual:

Paragon soak for 15 mins. don't wipe it off, then apply Coppertone SPF50 sunscreen, let it soak for another 15 mins. Wipe off thoroughly, then enjoy the grip.......
I still dont get why sunscreen works..... Any reason/theory behind it?
ttso is offline   Reply With Quote
Old 07-24-2007, 12:44 PM   #26383
Tech Fanatic
 
tpczx6's Avatar
 
Join Date: Sep 2004
Posts: 828
Trader Rating: 3 (100%+)
Default

Quote:
Originally Posted by ttso View Post
I still dont get why sunscreen works..... Any reason/theory behind it?

sunscreen will keep the pargon in the tire longer. as the pargon sits on the tire two things are going on, one it socking into the tire and two it evapaing into the air. By putting sunscreen on top of the last bit of pargon its letting the rest of it go into the tires and not into the air which will give you longer traction outdoors. just make sure to get aloe free sunscreen.


coppertone 15 or 45 the old stuff works best as it has no added aloe,or bug stuff in it

hope this helps
__________________
RcAmerica--Xray---Hudy----KO PROPO USA---ORCA---GRAVITY RC
Motiv------Apexrc-----
SWEEP Racing USA
Mike's Hobbyshop in Dallas
Nor-Cal Hobbies [The Race Place]
tpczx6 is offline   Reply With Quote
Old 07-24-2007, 12:55 PM   #26384
Tech Elite
 
odpurple's Avatar
 
Join Date: Dec 2002
Location: San Francisco
Posts: 2,187
Default

[...If I was going to guess, I'd say that if grip is low and you're losing the rear end that if you go a little firmer on the front tires you'll be tightening the car up a bit and making it more driveable.[/QUOTE]

Good guess. On a low bite track too much front traction makes the car feel loose
odpurple is offline   Reply With Quote
Old 07-24-2007, 12:58 PM   #26385
Tech Apprentice
 
ff01's Avatar
 
Join Date: Dec 2006
Posts: 76
Default

im not so good in english

Paragon is a tire soap, right ?
ff01 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 (0 members and 3 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 03:29 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