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Old 03-14-2011, 03:54 PM   #1
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Default 2011 ROAR Short Course Rules..

8.10.12 1/10th Short Course Truck
8.10.12.1 Dimensional Specifications:
Item Limit Specification
Wheel base Minimum 320mm (12.59 in) Maximum 335mm (13.19 in)
Overall Length Minimum 540mm (21.25 in) Maximum 568mm (22.36 in)
Overall Width Minimum 290mm (11.42 in) Maximum 296mm (11.65 in)
Weight Minimum 2098 gr (74 oz)
Vehicle Height Overall Minimum 199mm (7.835 in)
Wheel bead Inner Maximum 76.20mm (3.0 in)
diameter Outer Maximum 55.88mm (2.2 in)
Wheel bead width Maximum 39.37mm (1.55 in)
Wheels
Wheel width Maximum 41.91mm (1.65 in)
Tires Diameter mounted
Tire Width (Mounted)
Minimum
Maximum
106.68 (4.20 in)
46.99mm (1.85 in)
8.10.12.2 Motor 17.5 turn brushless or 27 turn brushed.
8.10.12.3 2 wheel rear drive with geared or ball differential only.
8.10.12.4 No tire tread cutting, bald tires or custom cut tires allowed.
8.10.12.5 Body Specifications:
8.10.12.5.1 Full fender truck body. Body must completely cover tires when viewed from above.
8.10.12.5.2 Windshield minimum setback centerline front of body to begin windshield. See
diagram 1.
8.10.12.5.3 Cab roof minimum width and depth. See Diagram 2.
8.10.12.5.4 Cab minimum height and depth. See Diagram 3.
8.10.12.5.5 Cab Setback: Minimum setback is measured from a point equal to the Front
(centerline) of the body to the beginning of the windshield/lower rock guard.
8.10.12.5.6 Cab Profile: Minimum depth of the cab is measured from the beginning point
(centerline) of the windshield/lower rock guard to the rear reference point of the cab
8.10.12.5.7 Roof Panel: Minimum width is measured from outer most points of the roof section to
the upper side window reference line depth of the roof panel is measured (centerline)
from
8.10.12.5.8 No add on or integrated spoilers/wings allowed.
Diagram 1 Diagram 2 Diagram 3
8.10.12.6 Tire Mounted: Minimum Diameter of the tire (mounted) is established to limit
extremely low profile designs. The target dimension (new tire) is established
at 4.30 Inches. To compensate for wear, molding tolerances, degradation of
foam inserts, the pre- race minimum allowable diameter of a mounted tire is
4.20 inches. Tracks and Promoters are encouraged to select a “Stated” tire
that works best for their particular location.
72
8.10.12.6.1 Use of ribbed front tires is inconsistent with a category that has achieved
most of its popularity on the basis of scale appearance. Therefore, ROAR
has decided not to allow use of this type of tire on this basis. Ribbed front
tires and "dashed" ribs will not be permitted. The rules will favor scale tread
patterns, but the front tires must at least feature a tread pattern that's
consistent with those used on the rear of the truck.
8.10.12.7 Height: Minimum Overall Height is measured with vehicle at Static Stance in
ready to race condition
8.10.12.8 Race vehicles must have front and rear bumpers. Made from non Metal
material nor contain sharp edges.
8.10.12.8.1 Front bumper must be minimum 171.45mm (6.750 inch) in width. Front Bumper
can be no wider than the inner sidewall of the front tire when straight


8.10.13 1/10th Expert Open Short Course Truck 4x4
8.10.13.1 Dimensional Specifications:
Item Limit Specification ( * measured axle center)
Wheel base* Minimum 320mm (12.59 in) Maximum 335mm (13.19 in)
Overall Length Minimum 511mm (20.10 in) Maximum 568mm (22.36 in)
Overall Width* Minimum 273mm (10.75 in) Maximum 296mm (11.65 in)
Weight (Ready to Race) Minimum 2505 gr (88 oz)
Vehicle Height Overall Minimum 199mm (7.835 in)
Wheel bead Inner Maximum 76.20mm (3.0 in)
diameter Outer Maximum 55.88mm (2.2 in)
Wheel bead width Maximum 39.37mm (1.55 in)
Wheel width Maximum 41.9mm (1.65 in)
Tires Diameter mounted Minimum 99mm (3.90 in)
Tire width mounted Maximum 46.99mm (1.85 in)
Dish Style Wheels Expressly Prohibited
8.10.13.2 Motor ANY ROAR Approved “05” Size Brushless Motor
8.10.13.2.1 Battery ANY ROAR Apporved 2S LiPo (7.4volt), 6Cell NiMh (7.2volt), or 2S LiFe
(6.6volt)
8.10.13.3 Four wheel drive with geared or ball differentials only.
8.10.13.4 No tire tread cutting, bald tires or custom cut tires allowed.
8.10.13.5 Body Specifications:
8.10.13.5.1 Full fender truck body. Body must completely cover tires when viewed from above.
73
8.10.13.5.2 Windshield minimum setback centerline front of body to begin windshield. See
diagram 1.
8.10.13.5.3 Cab roof minimum width and depth. See Diagram 2.
8.10.13.5.4 Cab minimum height and depth. See Diagram 3.
8.10.13.5.5 Cab Setback: Minimum setback is measured from a point equal to the Front
(centerline) of the body to the beginning of the windshield/lower rock guard.
8.10.13.5.6 Cab Profile: Minimum depth of the cab is measured from the beginning point
(centerline) of the windshield/lower rock guard to the rear reference point of the cab
8.10.13.5.7 Roof Panel: Minimum width is measured from outer most points of the roof section
to the upper side window reference line depth of the roof panel is measured (centerline)
8.10.13.5.8 No add on or integrated spoilers/wings allowed.
8.10.13.6 Tire Mounted: Minimum Diameter of the tire (mounted) is established to limit
extremely low profile designs. The target dimension (new tire) is established at 4.30 inches. To
compensate for wear, molding tolerances, degradation of foam inserts, the pre- race minimum
allowable diameter of a mounted tire is 3.90 inches. Tracks and Promoters are encouraged to
select a “Stated” tire that works best for their particular location.
8.10.13.7 Height: Minimum Overall Height is measured with vehicle at Static Stance in ready
to race condition
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Old 03-14-2011, 03:57 PM   #2
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Interesting stuff, I thought that last year there was a rule about cutting holes in the body, I quess that's gone.

Any "05" motor is allowed, I 550's are in........BB
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Old 03-14-2011, 06:47 PM   #3
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so SC 4x4 is now a ROAR approved ?

this is a good thing as i know they are not running them in aussie titles etc over here as yet , i hope that changes real soon
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Old 04-25-2011, 05:44 PM   #4
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I thought "05" size excluded 550's??
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Old 04-25-2011, 05:54 PM   #5
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Quote:
Originally Posted by pswag115 View Post
I thought "05" size excluded 550's??

I'd like to know the answer to this one too
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Old 04-25-2011, 06:24 PM   #6
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8.10.13.2 Motor ANY ROAR Approved “05” Size Brushless Motor

The key there I think is roar approved.

Here is the brushless approved list. Dont see many/any 550s on there...

Funny there are motors approved in 2015 on the list... way to proofread ROAR

http://www.roarracing.com/approvals/...s.php?ordby=ad
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Old 05-04-2011, 11:51 AM   #7
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Not only that, but if you look into the rulebook on what an "05" motor is, they outline can dimensions and # of poles...

Quote:
Originally Posted by 2010_ROAR_Rule_Book.PDF Last Updated March 29, 2011
8.8.4 “05” Size Dimensions:
8.8.4.1 Can:
Overall maximum diameter is 36.02mm measured at whatever point yields the
maximum dimension, excluding solder tabs, screw heads or lead wires.
This makes the Castle SC motor too wide. According to Castle, it's 38mm.
Quote:
Originally Posted by 2010_ROAR_Rule_Book.PDF Last Updated March 29, 2011
Maximum
length is 53.00mm measured from the mounting face of the motor to the furthest most
point of the end bell, not including solder tabs, lead wires or original manufacturer’s
logo or name. Motor mounting holes must be on 1.00- inch (25.40mm) centers.
All 550 motors I have looked at are too long.
Quote:
Originally Posted by 2010_ROAR_Rule_Book.PDF Last Updated March 29, 2011
8.8.4.4.2 ROAR Spec Motors: External shaft diameter must be 0.125 inches (3.175mm). Only
one piece, two pole Neodymium sintered, or Ferrite (Ceramic) magnetic rotors are
permitted. The magnet length shall be 25.0 +/- 1.00mm not including any nonmagnetic
balancing material. The magnet outside diameter shall be a maximum of
12.51 mm, no tolerance, for the entire length of the magnet.
This makes any 4 pole motors illegal, and any motors with 13 or 14mm rotors are also illegal, plus I believe the magnet inside most 550s are about 40-45mm long. (LRP claims 75% longer magnet.)

Bear in mind, this is only for ROAR sanctioned races. Most clubs will allow the 4 pole and 550 motors, and as I understand it, RCPS Canada (and possibly RCPS in the US, not 100% sure) will be setting SC to "Open Motor, ROAR everything else."
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Old 05-04-2011, 12:39 PM   #8
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4WD SCT should be an open motor/esc/battery class. Simple and less restrictive. There are too many manufacturers, driving styles and surface conditions all which necessitate different motor/esc and battery styles. ROAR is oblivious to what's going on at the local level. This is exactly why racing in the 80's and early 90's lost a lot of the fun. Too much regulation which stymied progress. It was the bashers who didn't care about rules and just wanted to make their cars better and faster that helped progress the sport. As more and more bashers came in and racers that had to adhere to strict rules began to wain, the companies finally started producing product that made the cars better and faster dedicated to the "bashers". So, they couldn't race, they came to the track on practice days and would beat the "fast guys". Sure they were "cheating" but not really, they were just running the latest technologies. Bottom line, ROAR should be helping to advance the hobby, not keeping it in the dark ages. And not allowing 4-pole motors, that's keeping it in the dark ages. I really don't understand ROAR's thinking. I know you can't please all the people all the time, but ROAR sure finds a way to please none of the people almost all of the time. I'm so glad that my track doesn't adhere to ROAR standards. I can tell you this, if they did, they'd be out of business. Why would ROAR want to run rules that diminishes turn out? I thought they're supposed to help the hobby not hurt it.

One day, hopefully we'll see a more cohesive and forward thinking governing body.
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Old 05-04-2011, 12:59 PM   #9
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Quote:
Originally Posted by ScottKelly911 View Post
4WD SCT should be an open motor/esc/battery class. Simple and less restrictive. There are too many manufacturers, driving styles and surface conditions all which necessitate different motor/esc and battery styles. ROAR is oblivious to what's going on at the local level. This is exactly why racing in the 80's and early 90's lost a lot of the fun. Too much regulation which stymied progress. It was the bashers who didn't care about rules and just wanted to make their cars better and faster that helped progress the sport. As more and more bashers came in and racers that had to adhere to strict rules began to wain, the companies finally started producing product that made the cars better and faster dedicated to the "bashers". So, they couldn't race, they came to the track on practice days and would beat the "fast guys". Sure they were "cheating" but not really, they were just running the latest technologies. Bottom line, ROAR should be helping to advance the hobby, not keeping it in the dark ages. And not allowing 4-pole motors, that's keeping it in the dark ages. I really don't understand ROAR's thinking. I know you can't please all the people all the time, but ROAR sure finds a way to please none of the people almost all of the time. I'm so glad that my track doesn't adhere to ROAR standards. I can tell you this, if they did, they'd be out of business. Why would ROAR want to run rules that diminishes turn out? I thought they're supposed to help the hobby not hurt it.

One day, hopefully we'll see a more cohesive and forward thinking governing body.
The do seem stuck in the dark ages and not really up to date with how technology has changed the sport of RC and what is capable these days. The rules seem meant to govern old technology. The rules don't seem to reflect how new ESCs and batteries have changed the very fabric of electric rc cars. Gone are the days of limited run times, NICD, NIMH batteries, mechanical ESCs, and the like. Stock is just as fast as mod now. etc, etc, etc...
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Old 05-04-2011, 01:19 PM   #10
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Quote:
Originally Posted by ScottKelly911 View Post
There are too many manufacturers, driving styles and surface conditions all which necessitate different motor/esc and battery styles.
This could be said about every class that exists at any level.

If you are to complain, complain to the committee and bring solutions with you supporting you claims.

otherwise you come off looking like this:


If that's not enough, start you're own governing body. You can look at NORRCA's model as what not to do

Quote:
Stock is just as fast as mod now.
You're doing it wrong.
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Old 05-04-2011, 01:25 PM   #11
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LOL, Kinda interesting all the factory engineers claiming 550's would certainly be allowed for 2011 They must not be on any better standing with ROAR than the rest of us
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Old 05-04-2011, 01:26 PM   #12
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based on the rules, does it sound like that new proline body that has those wing things on it is illegal?
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Old 05-04-2011, 01:39 PM   #13
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Doing what wrong? I don't race stock, but when I look at the results, it is almost as fast as mod especially considering stock has just devolved to a 2nd class for expert drivers. Stock no longer equates to beginner.

There used to be legitimate difference between stock motors and mod motors. Now there is not hence the issue with the ESC Timing, etc. The problem is that the technology has removed any difference between stock and mod for the most part. If it is about beginners vs expert, then group based on skillsets. If it is about costs, that is also a non-issue as costs are not out of control ESC/motors pretty much all cost the same.

The playing field is level. Everyone can get batteries that put out more power than necessary. Everyone can buy ultra high KV motors for the same cost as lower KV motors.

Do like nitro, throw them all together and let skillsets sort it out. For some reason, nitro guys don't throw a hissy fit when RTR .28s that can't hold a tune race against guys with $400 Novarossi's tuned out the wazoo by some guy named Jethro.

My point is keep it simple. I don't really care as I don't race 1/10 other than 4wd SCT. I am just glad the tracks locally use ROAR as a guide with a huge injection of common sense so everyone can have fun racing TOY FREAKING CARS versus worrying about what color I painted my body or if god forbid we use cab forward bodies on our cars.
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Old 05-04-2011, 01:42 PM   #14
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Quote:
Originally Posted by BlueGlowBoy View Post
Not only that, but if you look into the rulebook on what an "05" motor is, they outline can dimensions and # of poles...


This makes the Castle SC motor too wide. According to Castle, it's 38mm.

All 550 motors I have looked at are too long.


This makes any 4 pole motors illegal, and any motors with 13 or 14mm rotors are also illegal, plus I believe the magnet inside most 550s are about 40-45mm long. (LRP claims 75% longer magnet.)

Bear in mind, this is only for ROAR sanctioned races. Most clubs will allow the 4 pole and 550 motors, and as I understand it, RCPS Canada (and possibly RCPS in the US, not 100% sure) will be setting SC to "Open Motor, ROAR everything else."
I'm not sure this even applies to 4wd

what you quoted was for stock spec class, not open motor class such as 4x4 is. This imo would mean any 540, 550 motor should be allowed reguardless of poles.
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Old 05-04-2011, 01:45 PM   #15
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Quote:
Originally Posted by 8ight-e View Post
I'm not sure this even applies to 4wd

what you quoted was for stock spec class, not open motor class such as 4x4 is. This imo would mean any 540, 550 motor should be allowed reguardless of poles.
Look again, he got it out of the Expert 4x4 section of the rules...
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