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 07-25-2007, 04:05 PM   #26416
Tech Master
 
Big B's Avatar
 
Join Date: Dec 2006
Location: Kent, WA
Posts: 1,154
Trader Rating: 4 (100%+)
Default

Quote:
Originally Posted by portyansky View Post
It will be the Corally kit, so I am assuming the Corally front end. Red alum arms
The SP12X is also drilled to accept the Associated Front End as that is what most perfer

Quote:
Originally Posted by SlowerOne View Post
Well sort of, but I'll not be that rude!! Suffice to say that everyone in the UK (except one) runs the AE front end, and we've all had a try with the Corally one. Oh, and David Spashett won the worlds with the AE front end, and all the Corally Team that stuck with the Corally front end didn't do very well at the European Champs, and... But you're getting the message now, aren't you!
I take it you have read the 007 thread , yeah I think most of the Corally racers on this side of the pond run the AE Front end as well, I don't know if it is really that much better or if people just fear change.
__________________
Traxxas Slash 4x4, Team Checkpoint TC-1030 Charger and Power Supply, Team Checkpoint Lipo Balancer
Big B is offline   Reply With Quote
Old 07-25-2007, 04:16 PM   #26417
Tech Champion
 
Scottrik's Avatar
 
Join Date: Sep 2004
Location: Billings, MT
Posts: 6,123
Trader Rating: 239 (100%+)
Default

Quote:
Originally Posted by Big B View Post
I think most of the Corally racers on this side of the pond run the AE Front end as well, I don't know if it is really that much better or if people just fear change.
I think they're more afraid of breakage. What I saw of the SPX front end it was pretty darn fragile. One guy here picked one up last season and bailed on it after 2-3 races (even after he'd installed the AE front). A couple guys in the neighboring club had 'em and busted 'em up too. None of these folks are hacks that I'm talking about.
__________________
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 07-25-2007, 09:22 PM   #26418
Tech Elite
 
nf_ekt's Avatar
 
Join Date: Aug 2005
Location: 22 Acacia Avenue
Posts: 4,631
Trader Rating: 113 (100%+)
Default

Not sure if it's been brought up, but I saw some pics of the new Hara car and I like the battery strap set-up. Looks like something that you could make work with any car with a little massaging. I hate tape. I would just buy the new hara 12th but I don't like t-bar cars I have had more fun and less hassles with link-mobiles. They take my ocassional wreck a little better it seams .
nf_ekt is offline   Reply With Quote
Old 07-26-2007, 12:27 AM   #26419
Tech Elite
 
odpurple's Avatar
 
Join Date: Dec 2002
Location: San Francisco
Posts: 2,187
Default

Quote:
Originally Posted by nf_ekt View Post
Not sure if it's been brought up, but I saw some pics of the new Hara car and I like the battery strap set-up. Looks like something that you could make work with any car with a little massaging. I hate tape. I would just buy the new hara 12th but I don't like t-bar cars I have had more fun and less hassles with link-mobiles. They take my ocassional wreck a little better it seams .

That might be the best battery strap setup I have seen. it looks very secure but, of course, you don't know until you try to use it.

I hate to keep saying it over and over again but tape is the lightest and most secure way to attach your batteries to the chassis. If you haven't used it much, just use it for a season and you will see that it gets easier to do and you never have batteries getting loose
odpurple is offline   Reply With Quote
Old 07-26-2007, 04:11 AM   #26420
Tech Champion
 
Join Date: Nov 2001
Location: Hawaii, USA
Posts: 7,157
Default

I think the old Pure Tech velcro straps, the bolt on ones, were probably the best designed ones...lighter then solid plastic or graphite but didn't tweak the chassis with different sized cells so they held more like tape. Problem was they needed screw mount on both sides of the L mount instead of just 1 side to keep them from breaking...which they did not have.
InspGadgt is offline   Reply With Quote
Old 07-26-2007, 09:13 AM   #26421
Tech Addict
 
Join Date: May 2005
Location: California
Posts: 605
Trader Rating: 2 (100%+)
Default

Quote:
Originally Posted by odpurple View Post
I hate to keep saying it over and over again but tape is the lightest and most secure way to attach your batteries to the chassis. If you haven't used it much, just use it for a season and you will see that it gets easier to do and you never have batteries getting loose
season and a half and I still don't like tape
__________________
www.freerice.com
Help hungry people while learning.
smojoe is offline   Reply With Quote
Old 07-26-2007, 10:55 AM   #26422
Tech Elite
 
L.Fairtrace's Avatar
 
Join Date: Apr 2004
Location: Beyond the Wall
Posts: 3,746
Trader Rating: 23 (100%+)
Send a message via AIM to L.Fairtrace
Default

I think the Hotbodies shock is gonna be the only shock to have if it works like their Touring shocks. Anyone know when it comes out?
__________________
T.O.P Racing - Awesomatix USA - EaMotorsports - BSR Racing Tires - Orca - TQ Wire - Solaris Racing Tires - Side Piece Racing

Horsham RC. Where champions practice Failing. I'm your everything.....
L.Fairtrace is offline   Reply With Quote
Old 07-26-2007, 11:55 AM   #26423
Tech Elite
 
odpurple's Avatar
 
Join Date: Dec 2002
Location: San Francisco
Posts: 2,187
Default

Quote:
Originally Posted by smojoe View Post
season and a half and I still don't like tape
What you should do is try all the non-tape hold down methods. Try the O rings, velcro, all the various graphite and fiberglass plates with screws, body clips and bubble gum etc. Enjoy how the batteries pop out, shift, knock your esc loose; and how the stand offs on some pull the screws through the chassis. After a season and a half of that I think you might like the tape a little more
odpurple is offline   Reply With Quote
Old 07-26-2007, 11:58 AM   #26424
Tech Addict
 
Join Date: May 2005
Location: California
Posts: 605
Trader Rating: 2 (100%+)
Default

Quote:
Originally Posted by odpurple View Post
What you should do is try all the non-tape hold down methods. Try the O rings, velcro, all the various graphite and fiberglass plates with screws, body clips and bubble gum etc. Enjoy how the batteries pop out, shift, knock your esc loose; and how the stand offs on some pull the screws through the chassis. After a season and a half of that I think you might like the tape a little more
I would rather spend the money on a lipo pack and just servo tape it down
__________________
www.freerice.com
Help hungry people while learning.
smojoe is offline   Reply With Quote
Old 07-26-2007, 12:38 PM   #26425
Tech Master
 
CarlosG.'s Avatar
 
Join Date: Jul 2004
Location: Falls City,TX
Posts: 1,145
Trader Rating: 12 (100%+)
Send a message via Yahoo to CarlosG.
Default

Quote:
Originally Posted by smojoe View Post
I would rather spend the money on a lipo pack and just servo tape it down
I did that with a servo that had no ears on it so I used servo tape and shoogoo to hold it down. After 9 heats it came off, I wished i would of used the shoogoo and the straping tape to hold it down. Just saying that the tape is still better than just servo tape.
CarlosG. is offline   Reply With Quote
Old 07-26-2007, 12:47 PM   #26426
Tech Champion
 
Scottrik's Avatar
 
Join Date: Sep 2004
Location: Billings, MT
Posts: 6,123
Trader Rating: 239 (100%+)
Default

Quote:
Originally Posted by odpurple View Post
Try the O rings, velcro, all the various graphite and fiberglass plates with screws, body clips and bubble gum etc. Enjoy how the batteries pop out, shift, knock your esc loose; and how the stand offs on some pull the screws through the chassis. After a season and a half of that I think you might like the tape a little more
Nope...still prefer o-rings
__________________
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 07-26-2007, 02:25 PM   #26427
Tech Fanatic
 
Join Date: Jun 2005
Posts: 900
Default

Quote:
Originally Posted by Big B View Post
The SP12X is also drilled to accept the Associated Front End as that is what most perfer



I take it you have read the 007 thread , yeah I think most of the Corally racers on this side of the pond run the AE Front end as well, I don't know if it is really that much better or if people just fear change.
It is really that much better. Running a Corally means all metric threads, 7mm axles, and 1mm (rear) ride-height steps - we don;t fear change!!

Quote:
Originally Posted by Scottrik View Post
I think they're more afraid of breakage. What I saw of the SPX front end it was pretty darn fragile. One guy here picked one up last season and bailed on it after 2-3 races (even after he'd installed the AE front). A couple guys in the neighboring club had 'em and busted 'em up too. None of these folks are hacks that I'm talking about.
Nope, if anything the Corally front end takes the knocks better than the AE one because the joints are tougher, the bearings are inboard, and the springs are unlikely to bend. But, as you have discovered, there is more than one experience of every car!!
SlowerOne is offline   Reply With Quote
Old 07-26-2007, 02:35 PM   #26428
Tech Champion
 
Join Date: Nov 2001
Location: Hawaii, USA
Posts: 7,157
Default

Quote:
Originally Posted by Scottrik View Post
Nope...still prefer o-rings
Or the graphite hold down on our MX2s!
InspGadgt is offline   Reply With Quote
Old 07-26-2007, 04:56 PM   #26429
Tech Elite
 
nf_ekt's Avatar
 
Join Date: Aug 2005
Location: 22 Acacia Avenue
Posts: 4,631
Trader Rating: 113 (100%+)
Default

Quote:
Originally Posted by Scottrik View Post
Nope...still prefer o-rings
Still what I use on my CRC, (the current chassis plate is one I got from you awhile back btw )
nf_ekt is offline   Reply With Quote
Old 07-26-2007, 08:38 PM   #26430
Tech Elite
 
odpurple's Avatar
 
Join Date: Dec 2002
Location: San Francisco
Posts: 2,187
Default

Quote:
Originally Posted by smojoe View Post
I would rather spend the money on a lipo pack and just servo tape it down
servo tape would work but tape would be better
odpurple 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: 5 (3 members and 2 guests)
antlockyer, rMa
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 06:35 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