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 10-03-2010, 04:05 PM   #34801
Tech Initiate
 
hectickurt's Avatar
 
Join Date: Nov 2009
Location: Lewes UK
Posts: 30
Default

Quick question,
Do Associated springs fit on the Hotbodies Cyclone 12 shock and vice versa?
I have an Xray XII link but there seems to be a dissapointing range of springs for it and the Associated springs dont fit on it right.
Thanks in advance
__________________
non illegitimatis carborundum!

Xray T3R, Hobbywing electronics. Yeah baby!

Rob(not Lee) Streeter
hectickurt is offline   Reply With Quote
Old 10-03-2010, 04:48 PM   #34802
Tech Initiate
 
kjoer's Avatar
 
Join Date: Sep 2010
Location: Venlo, The Netherlands
Posts: 23
Send a message via ICQ to kjoer
Default

Quote:
Originally Posted by sidecarphil1 View Post
Thanks Phil! :)
__________________
Team Associated 12R5.1 / PROTOform AMR-12 / MobGums / LRP Vector X12 / LRP SXX Version 2 / LRP LiPo 5400 50C / KO Propo EX-10 Eurus / KO Propo PDS-951ICS / MYLAPS RC4 / Graupner Ultra Duo Plus 50
http://www.xs4all.nl/~rzavelli/stuff/rc_cars/
http://www.youtube.com/user/kjoer?feature=mhee
kjoer is offline   Reply With Quote
Old 10-03-2010, 09:26 PM   #34803
Tech Elite
 
chris moore's Avatar
 
Join Date: Mar 2004
Location: Phx AZ
Posts: 3,659
Trader Rating: 85 (99%+)
Default

Quote:
Originally Posted by 20 SMOKE View Post
if you are struggling with grip why are you you using the red spring,why not gold
I have did'nt work, this track is very dusty and only gets used once every month to month and a half by myself and two other 1/12 guys.
__________________
Sponsered by:

CMDezigns Paint Works
https://www.facebook.com/pages/CM-Dezigns/259989190822177?ref=hl
chris moore is offline   Reply With Quote
Old 10-03-2010, 10:15 PM   #34804
Tech Elite
 
andrewdoherty's Avatar
 
Join Date: Jan 2005
Location: ★Wylie, TX★
Posts: 3,763
Trader Rating: 47 (100%+)
Default

Quote:
Originally Posted by chris moore View Post
The track I run on has an indoor off-road track 4ft away so I like you also have grip struggles. I would suggest running Grey rears with Lilac fronts, #4 shurlube with a red spring, move the front of the shock up, and shorten the rear axle width by 1 or 2mm. Try these in steps, I'm running the BMI and these changes have helped with my car. Hth
I have tried the grey tires time and time again, but I have never been able to get any amount of grip with them. Same as pinks. The only tires I have been able to get to work are yellows, oranges, and whites. I do run the lilac fronts, but have been working with blacks lately to calm the front end down. I usually only go as hard as a silver springs and usually run between black or olive. The axle is as narrow as I can get it. I totally appreciate the response. You wouldn't believe the amount of dust on teh carpet. I'll have to take pics. My cars come off cleaner when I run outdoors than they do indoors on our carpet, lol.

Quote:
Originally Posted by 20 SMOKE View Post
if you are struggling with grip why are you you using the red spring,why not gold
see above.
__________________
"Whether you think you can, or think you can't, you're right." -Henry Ford
"[Driving] Genius is 1% inspiration, and 99% perspiration" -T.A. Edison
|◤Hobbywing◢|◤SpeedzoneUSA.com◢|◤Pro-One◢|
|◤ReflexRacing.net◢|◤Protoform◢|◤AVID R/C◢|
andrewdoherty is offline   Reply With Quote
Old 10-03-2010, 10:16 PM   #34805
Tech Elite
 
andrewdoherty's Avatar
 
Join Date: Jan 2005
Location: ★Wylie, TX★
Posts: 3,763
Trader Rating: 47 (100%+)
Default

Quote:
Originally Posted by chris moore View Post
I have did'nt work, this track is very dusty and only gets used once every month to month and a half by myself and two other 1/12 guys.
which bmi?
__________________
"Whether you think you can, or think you can't, you're right." -Henry Ford
"[Driving] Genius is 1% inspiration, and 99% perspiration" -T.A. Edison
|◤Hobbywing◢|◤SpeedzoneUSA.com◢|◤Pro-One◢|
|◤ReflexRacing.net◢|◤Protoform◢|◤AVID R/C◢|
andrewdoherty is offline   Reply With Quote
Old 10-04-2010, 03:09 PM   #34806
Tech Addict
 
forrestboy's Avatar
 
Join Date: Dec 2006
Posts: 555
Trader Rating: 16 (100%+)
Default

what is the best voltage booster and where can i find one? New to 1/12 scale



thanks
__________________
Team C Racing
evohobbies.com
forrestboy is offline   Reply With Quote
Old 10-04-2010, 03:36 PM   #34807
Tech Regular
 
revo523's Avatar
 
Join Date: Oct 2006
Location: NOLA!
Posts: 466
Trader Rating: 8 (100%+)
Default

Hey guys i know this is not the right thread but im selling my CRC Gen X For $80 + shipping, if yall want pictures give me a email address so i can send them... OBO.... LMK...
__________________
Xray T2 009 EU Tekin RS PRO Novak 13.5 SMC 5200
Team Magic G4JS O.S.12 skyline 12plus
Spektrum DX3S

What came first the chicken or the egg?
revo523 is offline   Reply With Quote
Old 10-04-2010, 03:46 PM   #34808
Tech Lord
 
20 SMOKE's Avatar
 
Join Date: Dec 2003
Location: HVR_ WEEKI WACHEE FL
Posts: 10,241
Trader Rating: 100 (100%+)
Default

Quote:
Originally Posted by forrestboy View Post
what is the best voltage booster and where can i find one? New to 1/12 scale



thanks
do you live in the US,http://www.tqcells.com/TQBOOSTER.htm
over seas,http://www.rcdynamics.co.uk/
__________________
Jamie W
*Team Tekin*TLR Racing*DE Racing*92 Zero Design*AKA*DDHRC*
20 SMOKE is offline   Reply With Quote
Old 10-04-2010, 04:13 PM   #34809
Tech Addict
 
forrestboy's Avatar
 
Join Date: Dec 2006
Posts: 555
Trader Rating: 16 (100%+)
Default

us
__________________
Team C Racing
evohobbies.com
forrestboy is offline   Reply With Quote
Old 10-04-2010, 04:26 PM   #34810
Tech Lord
 
20 SMOKE's Avatar
 
Join Date: Dec 2003
Location: HVR_ WEEKI WACHEE FL
Posts: 10,241
Trader Rating: 100 (100%+)
Default

i have a TQ and have no problems
__________________
Jamie W
*Team Tekin*TLR Racing*DE Racing*92 Zero Design*AKA*DDHRC*
20 SMOKE is offline   Reply With Quote
Old 10-04-2010, 06:22 PM   #34811
avs
Tech Master
 
avs's Avatar
 
Join Date: Jul 2006
Posts: 1,144
Trader Rating: 2 (100%+)
Default

Quote:
Originally Posted by forrestboy View Post
what is the best voltage booster and where can i find one? New to 1/12 scale



thanks
for a less pricy option consider
http://www.hobbyking.com/hobbyking/s...idProduct=7884

you can get a half dozen for the price of one TQ booster, but you need to rig your own wiring and switch if you want.
__________________
Tony Shimko
avs is offline   Reply With Quote
Old 10-04-2010, 06:25 PM   #34812
Tech Elite
 
odpurple's Avatar
 
Join Date: Dec 2002
Location: San Francisco
Posts: 2,187
Default

Quote:
Originally Posted by hectickurt View Post
Quick question,
Do Associated springs fit on the Hotbodies Cyclone 12 shock and vice versa?
I have an Xray XII link but there seems to be a dissapointing range of springs for it and the Associated springs dont fit on it right.
Thanks in advance
Yes, they fit
__________________
TOP Racing USA--OD Racing--Novak--Power Push--J Spec
odpurple is offline   Reply With Quote
Old 10-04-2010, 06:44 PM   #34813
Tech Elite
 
Team Speedy's Avatar
 
Join Date: Mar 2005
Location: South Eastern, PA
Posts: 2,040
Trader Rating: 41 (100%+)
Default

Quick question:

Thinking about picking up some variation of a LiFE pack for my 1/12. Is there anything I need to rewire or is it just a charge, plug in and go type of deal?
__________________
RcAmerica | Xray | Hudy | Motiv | Orca | Sanwa |
Team Speedy is offline   Reply With Quote
Old 10-04-2010, 07:34 PM   #34814
Tech Master
 
PDX-Spike's Avatar
R/C Tech Elite Subscriber
 
Join Date: Oct 2005
Location: 42
Posts: 1,440
Default

Quote:
Originally Posted by Team Speedy View Post
Quick question:

Thinking about picking up some variation of a LiFE pack for my 1/12. Is there anything I need to rewire or is it just a charge, plug in and go type of deal?
Nothing to rewire. Charge, plug in and go. With a 200 mAh pack you can easily get at least two 8-minute races before recharging.
__________________
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 10-04-2010, 07:53 PM   #34815
Tech Elite
 
Team Speedy's Avatar
 
Join Date: Mar 2005
Location: South Eastern, PA
Posts: 2,040
Trader Rating: 41 (100%+)
Default

Quote:
Originally Posted by PDX-Spike View Post
Nothing to rewire. Charge, plug in and go. With a 200 mAh pack you can easily get at least two 8-minute races before recharging.
Thanks Spike, I like simplicity!
__________________
RcAmerica | Xray | Hudy | Motiv | Orca | Sanwa |
Team Speedy 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 05:22 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