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 11-12-2009, 04:38 AM   #32686
Tech Fanatic
R/C Tech Elite Subscriber
 
Join Date: Jan 2009
Location: Poland, Warsaw
Posts: 772
Trader Rating: 1 (100%+)
Thumbs up

Quote:
Originally Posted by SuperEk4 View Post
No one knows? I was told to put 10,000 diff oil in the side damper as it's too loose now. Any advise?
Try from 5000 or 7000 and test it.



m.
__________________
Michal Abramowicz
http://abram.eu.org/gear_tc6.php
My setups there -> http://www.rc-setups.com
TC6!, TC5R, 12L4, 12R5.1, 10L2, 10R5, RC8T_CE_EL custom F1 chassis
http://www.wgtshop.com/
M.Abramowicz is offline   Reply With Quote
Old 11-12-2009, 01:23 PM   #32687
Tech Master
 
Join Date: Jan 2008
Location: Moreno Valley, Ca.
Posts: 1,933
Trader Rating: 2 (100%+)
Send a message via Yahoo to motojon
Default

Hey when u mount the body, do u mount it so the front tires match the cut out or what? Im used to 1/8th scale where u can move it back and forth from the bumper to get ur handeling changes
__________________
My Gpa(RIP)
motojon is offline   Reply With Quote
Old 11-12-2009, 02:10 PM   #32688
Tech Champion
 
Join Date: Nov 2001
Location: Hawaii, USA
Posts: 7,157
Default

I draw a centerline in the front wheel well then line up my front axles with that line to make sure the wheel is properly centered in the wheel well.
InspGadgt is offline   Reply With Quote
Old 11-12-2009, 03:37 PM   #32689
Tech Regular
 
DPowell's Avatar
 
Join Date: Apr 2003
Location: Denver, CO
Posts: 454
Trader Rating: 3 (100%+)
Default

Put the body where you want it. Once the body is painted, you won't see the factory cut outs. I found out a long time ago the cut outs do not always line up with each other side to side anyway.
__________________
www.powellracingcomponents.com
**Record setting carbon fiber**

Speedmerchant and TOP USA dealer.
DPowell is offline   Reply With Quote
Old 11-12-2009, 04:08 PM   #32690
xc7
Tech Addict
 
xc7's Avatar
 
Join Date: Aug 2008
Location: Winnipeg, Canada
Posts: 599
Trader Rating: 3 (100%+)
Default

Hi guys,

I'm new to the 1/12 onroad carpet scene and my setup is a 12R5.1, BL Novak Havok Spec 13.5, 1S Reedy 4600 Lipo with a voltage booster on a sml-med track. My manual shows 20 through 27 pinion on a 2cell lipo but what would you guys suggest I run for my 1S? Or do I need to buy em all and test to keep the temps at 160?

thanks for any input...
xc7 is offline   Reply With Quote
Old 11-12-2009, 04:17 PM   #32691
Tech Regular
 
DPowell's Avatar
 
Join Date: Apr 2003
Location: Denver, CO
Posts: 454
Trader Rating: 3 (100%+)
Default

On the subject of wheel cutouts, I've developed the PRC Wheel Wiz kit to give you perfect wheel cutouts every time.
The Wheel Wiz kit includes discs to locate the center of the rear wheels and the Wheel Wiz disc itself acts as a compass to provide 12 different sizes for front and rear cutouts. Also included are a push pin and micro Sharpie. You can also draw more than 1 size cutout to see which size works best for you. Email at dpowell@powellracingcomponents.com for more info.
Attached Thumbnails
1/12 forum-ww_1.jpg   1/12 forum-ww_2.jpg   1/12 forum-ww_3.jpg   1/12 forum-ww_4.jpg  
__________________
www.powellracingcomponents.com
**Record setting carbon fiber**

Speedmerchant and TOP USA dealer.
DPowell is offline   Reply With Quote
Old 11-12-2009, 04:18 PM   #32692
Tech Elite
 
Maybell's Avatar
 
Join Date: Jun 2007
Location: Seattle
Posts: 2,109
Trader Rating: 2 (100%+)
Default

Quote:
Originally Posted by xc7 View Post
Hi guys,

I'm new to the 1/12 onroad carpet scene and my setup is a 12R5.1, BL Novak Havok Spec 13.5, 1S Reedy 4600 Lipo with a voltage booster on a sml-med track. My manual shows 20 through 27 pinion on a 2cell lipo but what would you guys suggest I run for my 1S? Or do I need to buy em all and test to keep the temps at 160?

thanks for any input...
With a speedo like the Havok and 1s with 13.5, start around 73X41 with a 1.72" tire.
__________________
Sean Maybell - Team Associated Region 11 Administrator

AE - Reedy - LRP - Hobby Velocity - XP Digital - JConcepts
Maybell is offline   Reply With Quote
Old 11-12-2009, 04:28 PM   #32693
Tech Master
 
Join Date: Jan 2008
Location: Moreno Valley, Ca.
Posts: 1,933
Trader Rating: 2 (100%+)
Send a message via Yahoo to motojon
Default

But how far fowards, or back do I mount the body from the bumper
__________________
My Gpa(RIP)
motojon is offline   Reply With Quote
Old 11-12-2009, 05:23 PM   #32694
Tech Regular
 
Join Date: Aug 2008
Location: RVA
Posts: 455
Trader Rating: 11 (100%+)
Default

Motojon, I'm running a CRC 3.2R and off the chassis not the bumper, I'm 1.25" out with the body. It is just like the 1/8, start somewhere and start moving foward or back to suit your driving. Same effects.
Tim
__________________
TS racing
got2bqik is offline   Reply With Quote
Old 11-12-2009, 05:36 PM   #32695
Tech Elite
 
TommyBlazin's Avatar
 
Join Date: Feb 2009
Location: jersey
Posts: 2,544
Trader Rating: 29 (100%+)
Default

Quote:
Originally Posted by Maybell View Post
With a speedo like the Havok and 1s with 13.5, start around 73X41 with a 1.72" tire.
thats like a 73-74 rollout? that motor wants to be there?..TRYING to learn this rollout/brushless deal..
__________________
Trying my hand at electric in off season...TLR Sct 2.0---Trinity D4 10.5---HobbyWing 120 amp Black Edition---Trinity the "Brick"--Panther tires--Savox

Last edited by TommyBlazin; 11-12-2009 at 07:30 PM.
TommyBlazin is offline   Reply With Quote
Old 11-12-2009, 05:59 PM   #32696
Tech Lord
 
SuperEk4's Avatar
 
Join Date: May 2006
Location: Singapore
Posts: 10,333
Trader Rating: 32 (100%+)
Default

Quote:
Originally Posted by M.Abramowicz View Post
Try from 5000 or 7000 and test it.



m.
Thx man, apprea your advise. Will try
__________________
Hobbywing-Acorn Racing-ManiaRC-UpgradeRC-Hong nor-Rc monster-Blackbeard-Rc-MoosDesign-SweepRacing-Boca bearings-Tresrey USA-Velociti raceware-Tekno Rc-Team J-JPL Models-SNR Graphite (RETIRED)
SuperEk4 is offline   Reply With Quote
Old 11-12-2009, 08:53 PM   #32697
Tech Champion
 
Join Date: Nov 2001
Location: Hawaii, USA
Posts: 7,157
Default

Quote:
Originally Posted by DPowell View Post
On the subject of wheel cutouts, I've developed the PRC Wheel Wiz kit to give you perfect wheel cutouts every time.
The Wheel Wiz kit includes discs to locate the center of the rear wheels and the Wheel Wiz disc itself acts as a compass to provide 12 different sizes for front and rear cutouts. Also included are a push pin and micro Sharpie. You can also draw more than 1 size cutout to see which size works best for you. Email at dpowell@powellracingcomponents.com for more info.
That looks good...I've been looking around for that other circle cutter but may just get this one instead.
InspGadgt is offline   Reply With Quote
Old 11-12-2009, 10:25 PM   #32698
Tech Regular
 
DPowell's Avatar
 
Join Date: Apr 2003
Location: Denver, CO
Posts: 454
Trader Rating: 3 (100%+)
Default

I've used circle cutters in the past but with a circle cutter you still need a very positive method of locating the center of the rear wheels.
__________________
www.powellracingcomponents.com
**Record setting carbon fiber**

Speedmerchant and TOP USA dealer.
DPowell is offline   Reply With Quote
Old 11-13-2009, 01:34 AM   #32699
Tech Elite
 
bkspeedo's Avatar
 
Join Date: Nov 2007
Location: Fort Fun, CO
Posts: 3,068
Trader Rating: 5 (100%+)
Default Tire choice

I could probably search this thread and find the answer but it's rather large so I'll ask anyway.

What tire combos are people finding to be the fastest on a high traction track using Jack Gripper.

I'm interested in BSR and CRC combos.

Thanks
__________________
Brent Klingforth
Sponsors: Awesomatix USA ~ Roche USA ~ ORCA ~ AVID Bearings ~ R1 Wurks
TQ Wire ~ ProtoForm ~ BSR Racing Tires ~ 2mm Design
5280raceway.com [Operated by - Colorado On-Road RC Club]
MILE HIGH INDOOR CHAMPS April 20-23rd 2017 @ www.milehighindoorchamps.com
bkspeedo is offline   Reply With Quote
Old 11-14-2009, 09:11 AM   #32700
Tech Addict
 
xxxn-t chuck's Avatar
 
Join Date: Feb 2007
Location: Dunsmuir,CA
Posts: 712
Trader Rating: 6 (100%+)
Default

Quote:
Originally Posted by TommyBlazin View Post
id love to try that glue, cannot find anywhere sold in the usa???suxx
It's from Germany. Of our guys just bought ten bottles of it. It works awsome though. I know it cost him a lot for shipping to get it here.
__________________
D8T, Ve8
HPI Blitz
12X
xxxn-t chuck 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 01:00 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