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 12-17-2006, 05:00 PM   #22606
Tech Elite
 
Join Date: May 2004
Location: Adelaide..
Posts: 3,414
Trader Rating: 8 (100%+)
Send a message via ICQ to v0rtex Send a message via AIM to v0rtex Send a message via MSN to v0rtex
Default

What sort of ride height do people run on thier front? I'm running a kit stock L4 with some minor upgrades such as slapmaster thrust bearing and ceramic diff balls, with threaded front axles.

Tires are Jacos at about 45mm, but im getting heaps of understeer on power. Im guessing its because the front is stuck up in the air like a monster truck..

I'm running on indoor asphalt that has a lot of grip (nitro cars also run there) - red spring would cause crazy grip rolls. Blue seems good, but i'd like to get rid of some of the understeer still...
__________________
;)
v0rtex is offline   Reply With Quote
Old 12-17-2006, 05:04 PM   #22607
Tech Apprentice
R/C Tech Elite Subscriber
 
Join Date: Apr 2006
Location: Poland Warsaw
Posts: 71
Default

Quote:
Originally Posted by THE DARKSIDE
Express North-South Shoot-Out - Horsham R/C

Stock 1/12 A-Main

1 2 Mark Strasnick 38 00:08:09.649
2 1 Mark Smyka 38 00:08:10.101
3 7 Brandon Hess 36 00:08:00.788 - DARKSIDE Mx2
4 3 Jason Schreffler 36 00:08:05.855
5 5 Sal Amato 36 00:08:08.724
6 4 Andrew Smith 36 00:08:12.568
7 8 Ralph Morella 35 00:08:06.754
8 10 Vito Catalfamo 35 00:08:17.924
9 9 Steve Walter 34 00:08:02.362 - DARKSIDE Mx2
10 6 Greg Fangonil 34 00:08:04.119

Darkside Mx2, Coming to an A-main near you........


http://www.darksidems.com/images/pic..._Side_View.jpg
this is a darkside kit.
How does it feel when racing in mod clases? I cant imagine racinf with so much weight in front in mod class. what more it looks that cg is quite high.
any one tried this in mod?
blazeblazucki is offline   Reply With Quote
Old 12-17-2006, 05:06 PM   #22608
Super Moderator
 
Marcos.J's Avatar
R/C Tech Elite Subscriber
 
Join Date: Sep 2003
Location: Semper Fi
Posts: 25,177
Trader Rating: 140 (100%+)
Default

Quote:
Originally Posted by v0rtex
What sort of ride height do people run on thier front? I'm running a kit stock L4 with some minor upgrades such as slapmaster thrust bearing and ceramic diff balls, with threaded front axles.

Tires are Jacos at about 45mm, but im getting heaps of understeer on power. Im guessing its because the front is stuck up in the air like a monster truck..

I'm running on indoor asphalt that has a lot of grip (nitro cars also run there) - red spring would cause crazy grip rolls. Blue seems good, but i'd like to get rid of some of the understeer still...
what compound tires are they?
Marcos.J is offline   Reply With Quote
Old 12-17-2006, 05:34 PM   #22609
N4S
Tech Fanatic
 
N4S's Avatar
 
Join Date: Aug 2003
Location: Clearwater, Florida
Posts: 997
Trader Rating: 6 (100%+)
Default

Hey marcos ..... You dont have a spare transponder you want to sell do you ?
N4S is offline   Reply With Quote
Old 12-17-2006, 05:42 PM   #22610
Super Moderator
 
Marcos.J's Avatar
R/C Tech Elite Subscriber
 
Join Date: Sep 2003
Location: Semper Fi
Posts: 25,177
Trader Rating: 140 (100%+)
Default

Quote:
Originally Posted by N4S
Hey marcos ..... You dont have a spare transponder you want to sell do you ?
do you need it for the birds?
Marcos.J is offline   Reply With Quote
Old 12-17-2006, 05:46 PM   #22611
N4S
Tech Fanatic
 
N4S's Avatar
 
Join Date: Aug 2003
Location: Clearwater, Florida
Posts: 997
Trader Rating: 6 (100%+)
Default

Yeah , and for the minreg race ... AMB has them on back order .... I am going to try BandB tomorrow to see if dave has any.
N4S is offline   Reply With Quote
Old 12-17-2006, 05:52 PM   #22612
Super Moderator
 
Marcos.J's Avatar
R/C Tech Elite Subscriber
 
Join Date: Sep 2003
Location: Semper Fi
Posts: 25,177
Trader Rating: 140 (100%+)
Default

Quote:
Originally Posted by N4S
Yeah , and for the minreg race ... AMB has them on back order .... I am going to try BandB tomorrow to see if dave has any.
try superiors they have a few in stock, ask for jeff he can ship it for you, I have to look I may have a spare one that you can borrow
Marcos.J is offline   Reply With Quote
Old 12-17-2006, 05:52 PM   #22613
Tech Elite
 
Join Date: May 2004
Location: Adelaide..
Posts: 3,414
Trader Rating: 8 (100%+)
Send a message via ICQ to v0rtex Send a message via AIM to v0rtex Send a message via MSN to v0rtex
Default

Quote:
Originally Posted by Marcos.J
what compound tires are they?
Purple fronts and Pink rears.

Got some pro-cuts coming so i'll be trying those too.
__________________
;)
v0rtex is offline   Reply With Quote
Old 12-17-2006, 06:55 PM   #22614
Tech Lord
 
protc3's Avatar
 
Join Date: Jun 2003
Location: Spring Hill,Florida
Posts: 10,813
Trader Rating: 13 (100%+)
Default

Quote:
Originally Posted by MattW
Has anyone that has run a new IRS centre shock (very nice shock btw) changed their setup when compared to a std AE one.

I didn't really notice when i built it, but with the same oil as std, the damping is a lot "softer". Not 100% if that is just because the package is smoother as a whole.

I ask, as i was struggling with my car this weekend - and really couldn't put my fingure on why. Changed EVERYTHING back to how it was last time i ran, and car felt spot on again. I've just got this feeling that the difference could be the different feeling of the centre shock.
i run the new shock from irs.it does have a softer feel because the shock is much better.to have the same feel,try a slight bit heavier oil.
__________________
Jason Breiner
BMI Racing
Team Associated
J Concepts
protc3 is offline   Reply With Quote
Old 12-17-2006, 07:50 PM   #22615
Tech Elite
 
Join Date: Feb 2005
Location: auburn washington
Posts: 2,054
Default

Quote:
Originally Posted by protc3
no oil on the washers will give you minimal front traction and maximum rear traction.

lots of good info going on here, thanks guys. i run my washers dry guess i need to start experimenting with lubes. gonna be running mainly high grip asphalt, any suggestions.
Turtlemaster is offline   Reply With Quote
Old 12-17-2006, 07:55 PM   #22616
Tech Champion
 
JayBee's Avatar
 
Join Date: Mar 2004
Location: 12TH-MAN COUNTRY
Posts: 6,803
Trader Rating: 31 (100%+)
Default

Quote:
Originally Posted by smojoe
even if you fall twice as fast as you walk I would still have plenty of time to get out of the way
Oohh, TOASTY!
__________________
R C 3 G R A F I X _ F U S I O N . G R A P H I X _ S E A T T L E - R/C - R A C E R S _ E M E R A L D C I T Y R C . C O M

A E - 12R5.2 _ S M - REV8 PRO
JayBee is offline   Reply With Quote
Old 12-17-2006, 07:58 PM   #22617
Tech Champion
 
JayBee's Avatar
 
Join Date: Mar 2004
Location: 12TH-MAN COUNTRY
Posts: 6,803
Trader Rating: 31 (100%+)
Default

Quote:
Originally Posted by protc3
what double steer is is when your front tires bite going into and through a corner and then they let go and the car pushes and then bites in again.it almost looks like a wiggle going through the corner.using side dampening helps this by controling the flex of the T bar or side springs(if you run a link car).it dampens the torsional spring tension of the rear pod contoling the load placed on each of the front tires(how quickly the weight is transferred and returned) going into and through a corner.too heavy dampening will overload the front and cause the car to drill its nose to the ground.this is easy to see because you will actually see the inside rear tire lift going through the corner.this adjustment allows you to balance front and rear traction
Thanks J, I'm gonna watch for that. I've experienced double-steer the last time out
__________________
R C 3 G R A F I X _ F U S I O N . G R A P H I X _ S E A T T L E - R/C - R A C E R S _ E M E R A L D C I T Y R C . C O M

A E - 12R5.2 _ S M - REV8 PRO
JayBee is offline   Reply With Quote
Old 12-17-2006, 08:02 PM   #22618
Tech Lord
 
protc3's Avatar
 
Join Date: Jun 2003
Location: Spring Hill,Florida
Posts: 10,813
Trader Rating: 13 (100%+)
Default

Quote:
Originally Posted by Turtlemaster
lots of good info going on here, thanks guys. i run my washers dry guess i need to start experimenting with lubes. gonna be running mainly high grip asphalt, any suggestions.
try 5000 wt. oil on the washers to start.i use 5000wt. oil on the washers and king pins.what i do is load some on the washers when they are off the car,then i rub the 2 faces of them together to get them covered.then i stick them to the top plate and wipe them slightly back and forth to create a suction almost like when you have water between 2 pieces of glass.you will feel it tighten up when the air is displaced.once they feel tight,leave them stuck to the top plate and reassemble.this should give you a nice tight,dampened feel.i coat the king pins enough that when i run the kingpin through the pivot balls and steering knuckle,it slowly drops out.then i assemble the kingpin as normal.hope this helps out.
__________________
Jason Breiner
BMI Racing
Team Associated
J Concepts
protc3 is offline   Reply With Quote
Old 12-17-2006, 08:02 PM   #22619
Tech Elite
 
Join Date: Feb 2005
Location: auburn washington
Posts: 2,054
Default

can i steal your avatar jaybee, you know green is my color
Turtlemaster is offline   Reply With Quote
Old 12-17-2006, 08:05 PM   #22620
Tech Elite
 
Join Date: Feb 2005
Location: auburn washington
Posts: 2,054
Default

Quote:
Originally Posted by protc3
try 5000 wt. oil on the washers to start.i use 5000wt. oil on the washers and king pins.what i do is load some on the washers when they are off the car,then i rub the 2 faces of them together to get them covered.then i stick them to the top plate and wipe them slightly back and forth to create a suction almost like when you have water between 2 pieces of glass.you will feel it tighten up when the air is displaced.once they feel tight,leave them stuck to the top plate and reassemble.this should give you a nice tight,dampened feel.i coat the king pins enough that when i run the kingpin through the pivot balls and steering knuckle,it slowly drops out.then i assemble the kingpin as normal.hope this helps out.

thanks a bunch, got my butt kicked today by bodine so i gotta do something. other then giving up the sedan.
Turtlemaster 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 04:55 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