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 11-03-2004, 05:19 PM   #9076
Tech Elite
 
ALBERTO's Avatar
 
Join Date: Aug 2004
Location: LONG ISLAND, NEW YORK
Posts: 2,986
Trader Rating: 23 (96%+)
Send a message via AIM to ALBERTO Send a message via Yahoo to ALBERTO
Default

Quote:
Originally posted by CarpetRacer
Thank you!!!


Another question....

Anyone have any good mounted body pics? I am unsure how to mount and how to trim the body, especially around the rear tires and the very back of the body.

Thanks so much!
ya best bet is to mount the body on the car unpainted then with a sharpie mark all ya wheel wells. Now you can go 2 way and cut them out then paint or paint first. I try and do everthing before i paint. Body holes and wheel wells. Cause i dont know about you but i cant see poop once it is painted.
__________________
still fishing
ALBERTO is offline   Reply With Quote
Old 11-03-2004, 06:57 PM   #9077
P2
Tech Fanatic
 
P2's Avatar
 
Join Date: Aug 2003
Location: Oahu, Hi
Posts: 865
Trader Rating: 15 (100%+)
Default

Quote:
Originally posted by Dougnuts55
On asphalt how fast do you go throw a set of foams.

Doug
Depending on how big I start the tires at (1.85" F/ 1.95" R), I can get 3-4 race weekends at Hobbytown San Antonio. Some guys just mount the tires right out of the package so they can get more runs. Downside....with too big of a tire the car's handling is not so great and tire chunks are more common.
__________________
TopRacingUSA | Team EPIC | Thunder Power | OD Racing
P2 is offline   Reply With Quote
Old 11-03-2004, 07:20 PM   #9078
Tech Elite
 
ALBERTO's Avatar
 
Join Date: Aug 2004
Location: LONG ISLAND, NEW YORK
Posts: 2,986
Trader Rating: 23 (96%+)
Send a message via AIM to ALBERTO Send a message via Yahoo to ALBERTO
Default

Quote:
Originally posted by P2
Depending on how big I start the tires at (1.85" F/ 1.95" R), I can get 3-4 race weekends at Hobbytown San Antonio. Some guys just mount the tires right out of the package so they can get more runs. Downside....with too big of a tire the car's handling is not so great and tire chunks are more common.
what about ca glue in the tires/foam to prevent this from happening
__________________
still fishing
ALBERTO is offline   Reply With Quote
Old 11-03-2004, 08:48 PM   #9079
P2
Tech Fanatic
 
P2's Avatar
 
Join Date: Aug 2003
Location: Oahu, Hi
Posts: 865
Trader Rating: 15 (100%+)
Default

Quote:
Originally posted by ALBERTO
what about ca glue in the tires/foam to prevent this from happening
Many racers glue the sidewalls to prevent the tire from rolling over during hard cornering. I know at this years Snowbirds guys were gluing sidwalls to help the car's handling, not to prevent chunking.
__________________
TopRacingUSA | Team EPIC | Thunder Power | OD Racing
P2 is offline   Reply With Quote
Old 11-03-2004, 09:44 PM   #9080
Tech Addict
 
gacjr0's Avatar
 
Join Date: Dec 2002
Posts: 726
Trader Rating: 15 (100%+)
Default

Carpet racer,
I use the quantum sport too. Electrically speaking, in 4 cell stock you wouldn't be able to tell the difference using the 4 wires. If you're hardwiring and have weight concerns you can take out one of the wires from the board ( I don't recall which one I chose and why). They are connected at the board anyway. then it's just a short wire to the batt (+) and another short wire from the batt (+) to the motor (+). Make sure to leave a good amount of slack to allow for pod movement.
good luck
gacjr0 is offline   Reply With Quote
Old 11-04-2004, 12:47 AM   #9081
Tech Elite
 
litespeed-dom's Avatar
 
Join Date: Oct 2002
Location: Beaverton, Oregon
Posts: 3,990
Trader Rating: 4 (100%+)
Default

I was talking with ChadK tonight regarding the t-bar cars at Worlds. Anyone noticed on several cars, the front of the t-bar doesn't use a pivot? Instead, it's almost a solid block that the t-bar mounts "on" it.

Anyone got a clue what it is? And what it does?

Also, the aluminum rear ride height inserts???




Most noticeble on this car...


Dom
__________________
Team Kyosho America - Team Br00d Racing - Team R/C Plus - GQ Racing Tyres - Slapmaster Tools - FSX Racing
litespeed-dom is offline   Reply With Quote
Old 11-04-2004, 03:34 AM   #9082
Tech Adept
 
kiyano's Avatar
 
Join Date: Jan 2003
Location: Tokyo,Japan
Posts: 151
Default

This is the product called tweakless plate.
In Japan, it is put on the market from cross.


http://www.rc-cross.com/page/1_2parts.html

Since I have not used this product, a detailed thing is not known. However, according to the user who used it, it is said that the performance in a good grip road surface is high. And tweak adjustment becomes unnecessary as the name.
__________________
Kimihiko Yano
http://www.kimihiko-yano.net/
kiyano is offline   Reply With Quote
Old 11-04-2004, 06:34 AM   #9083
Tech Apprentice
 
Manfredo's Avatar
 
Join Date: Mar 2003
Location: Vienna/Austria
Posts: 83
Default

Does anybody know which ball cups (grey) are used on the second car (Mike Blackstock´s) on the upper links of the front end ?
Manfredo is offline   Reply With Quote
Old 11-04-2004, 08:21 AM   #9084
Tech Master
 
chicky03's Avatar
 
Join Date: Mar 2002
Posts: 1,938
Trader Rating: 1 (100%+)
Send a message via AIM to chicky03
Default

Contact Bud at BRP. He used to sell the Ball cups.

http://brpracing.com/
__________________
Serpent America, Picco, Blitz Bodies, Team Titan, Desoto Racing, LRP, Motiv, J Concepts, Nitro Pro fuel, PT RC Racing Oils, TQ Wire(best wire ever!), BSR tires, Arrowmax, Xceed, Sanwa.
chicky03 is offline   Reply With Quote
Old 11-04-2004, 08:57 AM   #9085
Tech Addict
 
Tim Stamper's Avatar
 
Join Date: Nov 2003
Location: Redford, Mi.
Posts: 591
Default

Quote:
Originally posted by Unregistered
I'm glad they're working out Tim...I have about 1000 cells to unload now.

How much weight did 6 cells save? 5 cells saved about 1/4 ounce.
Hmm, I haven't tested that yet. The car is still about an ounce light with either pack sittin on it.

Are you gonna be down at Halo anytime soon?

Tim
__________________
This space for rent
Tim Stamper is offline   Reply With Quote
Old 11-04-2004, 02:02 PM   #9086
Tech Regular
 
Join Date: Aug 2004
Location: SCS Michigan
Posts: 332
Default

hey ya old man,
good luck down at halo this week and only about 20 days till i get my 12th workin and beatin urs JP
Tony Szep is offline   Reply With Quote
Old 11-04-2004, 04:08 PM   #9087
Tech Addict
 
Tim Stamper's Avatar
 
Join Date: Nov 2003
Location: Redford, Mi.
Posts: 591
Default

Quote:
Originally posted by Tony Szep
hey ya old man,
good luck down at halo this week and only about 20 days till i get my 12th workin and beatin urs JP
Yeah, Yeah, Yeah.

That's cool. Oh yeah, my phone is on the fritz right now and if you try to call, 90% of the time I can't answer it.

Just get the car ready. I will be at Larry's friday(tomorrow). Then I will be running the races at RcScrewz on Saturday and then going down to see the Norcca Nats mains on Sunday at Halo.

Talk to ya later,

Tim
__________________
This space for rent
Tim Stamper is offline   Reply With Quote
Old 11-04-2004, 05:07 PM   #9088
Tech Fanatic
 
Join Date: Oct 2003
Location: Waterford, MI
Posts: 827
Trader Rating: 4 (100%+)
Default

Timmay, so that explains it!!!! dude, e-mail me or call my cell...
__________________
Currently taking a break from R/C, running 1/1 scale cars, they are cheaper then running Modified TC!!!
retired from RC in 2007, running 1:1 scale now
gdanthony@comcast.net
Greg Anthony is offline   Reply With Quote
Old 11-04-2004, 07:12 PM   #9089
Tech Master
 
koabich's Avatar
 
Join Date: Oct 2003
Location: Detroit Area
Posts: 1,360
Send a message via Yahoo to koabich
Default

Hey guys, i am sure this question has been asked and I tried searching. I race 1/10 scale touring on an indoor carpet track. I am going to be purchasing a 1/12 scale for racing on this same tight, carpet track and I was wondering what the difference is between cars that have T-plates and those that use damper tubes?
Which one would be prefered for carpet and why?
Thanks
koabich is offline   Reply With Quote
Old 11-04-2004, 07:25 PM   #9090
Tech Regular
 
Join Date: Aug 2004
Location: SCS Michigan
Posts: 332
Default

Quote:
Originally posted by Tim Stamper
Yeah, Yeah, Yeah.

That's cool. Oh yeah, my phone is on the fritz right now and if you try to call, 90% of the time I can't answer it.

Just get the car ready. I will be at Larry's friday(tomorrow). Then I will be running the races at RcScrewz on Saturday and then going down to see the Norcca Nats mains on Sunday at Halo.

Talk to ya later,

Tim
well i cant make it up friday but ill try to go down on sunday or i might go to larrys and since every one is down at halo i could have a shot at the A!
Tony Szep 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 02:37 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