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 12-02-2010, 10:14 PM   #35191
Tech Fanatic
 
hotdognobun's Avatar
 
Join Date: Sep 2009
Location: San Diego
Posts: 821
Trader Rating: 31 (100%+)
Default r12 for sale

Yokomo r12
hotdognobun is offline   Reply With Quote
Old 12-07-2010, 05:27 AM   #35192
Tech Fanatic
 
Castradamus's Avatar
 
Join Date: Aug 2003
Location: Qboro / Columbus, IN
Posts: 843
Trader Rating: 52 (100%+)
Default Rev 5L For Sale

Good deal on a 5L

FS/FT: CLEAN UP (REV 5L, Pro 53, ITF . . . etc.)
__________________
He who is not courageous enough to take risks will accomplish nothing in life. - Muhammad Ali

SpeedzoneUSA.com | C&M Motorsports | TQ Wire | NAO | dIgItS pAiNt
Castradamus is offline   Reply With Quote
Old 12-07-2010, 08:20 AM   #35193
Tech Rookie
 
Join Date: Oct 2010
Posts: 2
Default 3.7 v booster

Where could I find the booster for the 12R5
jbrown7414 is offline   Reply With Quote
Old 12-07-2010, 11:37 AM   #35194
Tech Addict
 
radio_car_racer's Avatar
 
Join Date: Apr 2004
Posts: 543
Trader Rating: 1 (100%+)
Default

Quote:
Originally Posted by jbrown7414 View Post
Where could I find the booster for the 12R5
Try from here

http://www.rcdynamics.co.uk/

Plenty in use in the UK and there may be users Stateside

Theirs a new version that has 7.2v output I believe
radio_car_racer is offline   Reply With Quote
Old 12-07-2010, 01:54 PM   #35195
Tech Master
 
PDX-Spike's Avatar
R/C Tech Elite Subscriber
 
Join Date: Oct 2005
Location: 42
Posts: 1,440
Default

TQ Cells
__________________
Roger Christal - Team Timezone (Hooligans), Rose City Scale Racing, ROAR Member until 9/16/2012
Support the locals: Timezone Raceway, Timezone II, R/C Plus, Portland RC Raceway
McKune Design, Slapmaster Tools, Houston's Engine Service
PDX-Spike is offline   Reply With Quote
Old 12-07-2010, 07:52 PM   #35196
avs
Tech Master
 
avs's Avatar
 
Join Date: Jul 2006
Posts: 1,144
Trader Rating: 2 (100%+)
Default

Quote:
Originally Posted by jbrown7414 View Post
Where could I find the booster for the 12R5
hobbyking's booster has worked fine for me, but i have had terrible luck with switches. you need to work out your own switch, but at $5 each you can get several.

http://www.hobbyking.com/hobbyking/s...idProduct=7884
__________________
Tony Shimko
avs is offline   Reply With Quote
Old 12-09-2010, 12:48 PM   #35197
Tech Addict
 
Join Date: Dec 2008
Posts: 569
Trader Rating: 33 (100%+)
Default

.

Last edited by Josh Keller; 12-11-2010 at 06:47 PM.
Josh Keller is offline   Reply With Quote
Old 12-09-2010, 02:03 PM   #35198
Tech Champion
 
RC MARKET's Avatar
 
Join Date: Feb 2007
Location: HK
Posts: 6,127
Trader Rating: 12 (100%+)
Default

many sell ?
RC MARKET is offline   Reply With Quote
Old 12-10-2010, 10:38 AM   #35199
Tech Addict
 
radio_car_racer's Avatar
 
Join Date: Apr 2004
Posts: 543
Trader Rating: 1 (100%+)
Default

Quote:
Originally Posted by radio_car_racer View Post
UK 12th Nationals Live

next meeting is Tamworth on 11th & 12th December
Starts tomorrow

Quote:
In an effort to keep 12th scale racers and followers up to date and in the loop with news and results, the national series will now be covered online.

From the Tamworth national onwards you'll be able to visit pages on Facebook and Twitter to see what's going on if you're not at the meeting!


On the facebook page there will be round by round updates including images of the qualifying lists as well as notable occurrences and things that happen worth mentioning. Following each meeting you'll also be able to see photos, videos and reports from the event.

To access the facebook page, Click Here

Twitter will be used in a similar way, but due to its more basic nature it'll be limited to short text updates on the movers and shakers in each round and the finals.

To access the Twitter page search for '@BRCA12thScale'
radio_car_racer is offline   Reply With Quote
Old 12-10-2010, 10:44 AM   #35200
Tech Elite
 
spring71's Avatar
 
Join Date: Oct 2008
Location: Chino, CA
Posts: 3,698
Trader Rating: 3 (100%+)
Smile

We will have 2011 1st TQ PAN CAR GRAND PRIX on Jan 23rd.

TQ PAN CAR GRAND PRIX will be held every quarter, Jan, April, July and Oct.

We have new classes - Mini-Z and 1/12 Mod.

Here is the TQ PAN CAR GRAND PRIX thread: http://www.rctech.net/forum/californ...rand-prix.html
__________________
TQ RC RACING
Indoor RC Race Track & Hobby Shop in Chino, CA
Online Shop
http://www.tqrcracing.com
tq@tqrcracing.com
spring71 is offline   Reply With Quote
Old 12-10-2010, 11:22 AM   #35201
Tech Champion
 
YR4Dude's Avatar
 
Join Date: Sep 2004
Location: So Cal
Posts: 5,625
Trader Rating: 44 (100%+)
Default Cirtix 17.5 combo for 1s/4cell

I've never seen the combo used in this application. In the past I've only seen it used in TCs with 2s lipos. I've also read the manual from Speedpassion and it does not detail usage in 1s/4cell at all. Could someone please shed some light into this?
YR4Dude is offline   Reply With Quote
Old 12-10-2010, 11:42 AM   #35202
Tech Elite
 
spring71's Avatar
 
Join Date: Oct 2008
Location: Chino, CA
Posts: 3,698
Trader Rating: 3 (100%+)
Smile

Quote:
Originally Posted by YR4Dude View Post
I've never seen the combo used in this application. In the past I've only seen it used in TCs with 2s lipos. I've also read the manual from Speedpassion and it does not detail usage in 1s/4cell at all. Could someone please shed some light into this?
Cirtix 17.5 combo works well with 4s Ni-Mh.

For 1s Lipo, you need receiver battery or booster.

Most of 1/12 Cirtix 17.5 spec racers are using 4s Ni-MH.

Thanks.
__________________
TQ RC RACING
Indoor RC Race Track & Hobby Shop in Chino, CA
Online Shop
http://www.tqrcracing.com
tq@tqrcracing.com
spring71 is offline   Reply With Quote
Old 12-10-2010, 11:59 AM   #35203
Tech Master
 
EricF's Avatar
 
Join Date: Jun 2003
Location: AZ
Posts: 1,515
Default

For the Critix 17.5 class what is the weight going to be set at? lipo 17.5 and nimh 17.5 are not equal in performance, did I miss something??
E
__________________
<
AE 12R5.2 (x2) - TC7 - M05 - M05V2R

People who don't have to wait for the latest item, should not tell those that do, that "It's worth the wait"
EricF is offline   Reply With Quote
Old 12-10-2010, 12:07 PM   #35204
Tech Elite
 
spring71's Avatar
 
Join Date: Oct 2008
Location: Chino, CA
Posts: 3,698
Trader Rating: 3 (100%+)
Smile

Quote:
Originally Posted by EricF View Post
For the Critix 17.5 class what is the weight going to be set at? lipo 17.5 and nimh 17.5 are not equal in performance, did I miss something??
E
4s Ni-MH is heavier than 1s Lipo, but it has more voltage.

It depends on the batteries, 4s is a little bit faster than 1s. But 1s has it's own advantage.

Thanks.
__________________
TQ RC RACING
Indoor RC Race Track & Hobby Shop in Chino, CA
Online Shop
http://www.tqrcracing.com
tq@tqrcracing.com
spring71 is offline   Reply With Quote
Old 12-10-2010, 03:00 PM   #35205
Tech Adept
 
Join Date: Jan 2009
Posts: 130
Default

Quote:
Originally Posted by spring71 View Post
4s Ni-MH is heavier than 1s Lipo, but it has more voltage.

It depends on the batteries, 4s is a little bit faster than 1s. But 1s has it's own advantage.

Thanks.
Not sure with 17.5, but with Modified 1S is not slower... not sure if this applies to 17.5...
We ran combination with 4 cell and 1S and my 1S was much faster on the straight...

__________________
Corally PHI/PHI 09 TEAM DRIVER
BMI DB12RR TEAM DRIVER
TOP
LRP TC SXX, LRP SXX Ver. 2, LRP X12 Octa, Futaba 3PKS Spektrum Module, Protform.
SOUTH AFRICA :)
PHI/BMI racer 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 05:58 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