Crawler luokkien säännöt kaudelle 2024-2025

[Zarizi Tech]

https://docs.google.com/document/d/1w23 ... p=drivesdk

WORLD RADIO CONTROLLED CRAWLER ASSOCIATION RULES 2024-2025 ❗️❗️

The committee has been working hard to ensure better rules for you guys to enjoy for the next two year perioid. Committee reserves all rights to modify the rules if something urgent needs to be done at any time.

New classes (for example Micro) were reviewed but for the time being we decided to sit back and see how it is gaining popularity.


Added Judging rules:

▪ 4.11 - Warp box system:
A Warp Box may be used to connect gates on a course when there is no way to physically drive to it. It is composed by a "Sender" and "Receiver" box it is a clearly identified place on the course where when a vehicle completely enters the boundary of the "Sender" box, time will be stopped and the vehicle moved by hand to "Receiver" box to continue the course.
Time will be restarted when the vehicle progresses out of the "Receiver" box.
For the "Sender" box to work the car must be in its upright position. No penalties are caused by the Warp box system. Only one Warp box system is allowed per course.


Added to Glossary of Terms:

Grille: A grille on a body is located in front of the engine hood/engine cover and is often found between the headlights. It should be in a vertical or semi-vertical position.

A suspension link, control link or link: is a suspension member that is attached from only two points. One point being the chassis or skid plate of the vehicle and the other point is the axle. The link typically pivots on a rod end at each attachment point.


Vehicle requirements:

Pro class:

Deleted rules:
Vehicle track width is limited to a maximum of 12.5”/317.5mm.

Changed rules:
▪ 2.3.2 - With a tire mounted, no exterior component of the wheel, including but not limited to the bead lock ring shall exceed 2.55"/64.77mm. If a bead lock ring is not present, the bead lock surface of the tire should not exceed 2.55"/64.77mm in diameter, and the tire bead lock should remain as stock size.


Mini class:

Deleted rules:
Vehicle track width is limited to a maximum of 9”/228.6mm.

Changed rules:
▪ 2.4.2 - With a tire mounted, no exterior component of the wheel, including but not limited to the bead lock ring shall exceed 2.2"/55.88mm. If a bead lock ring is not present, the bead lock surface of the tire should not exceed 2.2"/55.88mm in diameter, and the tire bead lock should remain as stock size.

Added rules:
▪ 2.4.11 - It is required to have a minimum of 3 suspension links between skid plate/chassis and the front axle and a minimum of 3 suspension links between skid plate/chassis and the rear axle. These links and the suspension shocks can be the only connection points between chassis and the axles. Chassis mounted servo cars can have an additional drag link between servo horn and knuckle/tie rod. (See Section 6 - A suspension link, control link or link)


Sportsman class:

Deleted rules:
Vehicle track width is limited to a maximum of 12.5”/317.5mm.

Changed rules:
▪ 2.5.2 - With a tire mounted, no exterior component of the wheel, including but not limited to the bead lock ring shall exceed 2.55"/64.77mm. If a bead lock ring is not present, the bead lock surface of the tire should not exceed 2.55"/64.77mm in diameter, and the tire bead lock should remain as stock size.

Added rules:
▪ 2.5.9 - It is required to have a minimum of 3 suspension links between skid plate/chassis and the front axle and a minimum of 3 suspension links between skid plate/chassis and the rear axle. These links and the suspension shocks can be the only connection points between chassis and the axles. Chassis mounted servo cars can have an additional drag link between servo horn and knuckle/tie rod. (See Section 6 - A suspension link, control link or link)


Performance Scale:

Deleted rules:
- The inner side wall/ shoulder of front tyres, measured at the axle center must be covered by bodywork when viewed from above at rest. Flares can be added to the body to obtain coverage.
- Shock hoops must be no higher than 2.75”/70mm above the lowest point of the skid. (NOTE: This is defined as the point in which the shock “hoop” meets the chassis rail.)
- Upper link mounts on the chassis to be no greater than 1.18”/30mm higher than the lowest point of the skid.

Changed rules:
• 2.6.1.3 - Vehicles must run a minimum full body from the grille to the B-pillar (See Section 6 - Grille). Grille area must have a measurable rectangular shape with a minimum height of 0.59”/15mm and a minimum length of 2.36”/60mm. This minimum area can include, or not, the headlights. Headlights are optional as long as the minimum grille area is accomplished. Wheel arches may be trimmed for clearance.
• 2.6.4.1 - Chassis must extend covering all axle centrelines. Two piece sectional chassis are permitted, provided they are screwed, bolted or welded/brazed together to form a single chassis rail. Chassis length is to be constructed using a maximum of two pieces overlapping/joined for the full length of the skid. The front lower links must be at least 90mm in lenght eye to eye measured in a straight line.

Added rules:
▪ 2.6.1.2 - Vehicle wheelbase is limited to a maximum of 12.5”/317.5mm.
• 2.6.4.5 - It is required to have a minimum of 3 suspension links between skid plate/chassis and the front axle and a minimum of 3 suspension links between skid plate/chassis and the rear axle. These links and the suspension shocks can be the only connection points between chassis and the axles. Chassis mounted servo cars can have an additional drag link between servo horn and knuckle/tie rod. (See Section 6 - A suspension link, control link or link)

[Zarizi Tech]

❗️❗️ One more update to the 2024-2025 Official rules to avoid misunderstanding:

Performance Scale chassis section:

https://docs.google.com/document/d/1w23 ... p=drivesdk

Old rule:
• 2.6.4.1 - Chassis must extend covering all axle centrelines. Two piece sectional chassis are permitted, provided they are screwed, bolted or welded/brazed together to form a single chassis rail. Chassis length is to be constructed using a maximum of two pieces overlapping/joined for the full length of the skid. The front most point of the skid must not be further forward than 1/3rd of the total wheelbase.

New rule:
• 2.6.4.1 - Chassis must extend covering all axle centrelines. Two piece sectional chassis are permitted, provided they are screwed, bolted or welded/brazed together to form a single chassis rail.
Chassis length is to be constructed using a maximum of two pieces, a front section and a rear section, overlapping/joined for the full length of the skid. The front lower links must be at least 90mm in lenght eye to eye measured in a straight line.

[Zarizi Tech]

Performance Scale luokan akseliväli jälleen vapautettu;

Given the presentation of information that we overlooked while considering the Performance Scale class specs for 2024, we would like to advise that rule:
(▪ 2.6.1.2 - Vehicle wheelbase is limited to a maximum of 12.5”/317.5mm.) is removed to keep the spirit of the class closer to beginner class as it was meant to from day one.

We would like to thank you all for your input and continued suggestions to make our class regs the best they can be. Sorry for everyone this might have already affect.

If the committee feels that correction needs to be made it's better to do it sooner than later.

Bring on 2024!

[Zarizi Tech]

Update to the rules of Mini, Sportsman and Performance Scale Class:

Previous rule:
• It is required to have a minimum of 3 suspension links between skid plate/chassis and the front axle and a minimum of 3 suspension links between skid plate/chassis and the rear axle. These links and the suspension shocks can be the only connection points between chassis and the axles. Chassis mounted servo cars can have an additional drag link between servo horn and knuckle/tie rod. (See Section 6 - A suspension link, control link or link)

Updated rule:
• It is required to have a minimum of 3 suspension links between skid plate/chassis and the front axle and a minimum of 3 suspension links between skid plate/chassis and the rear axle. These links and the suspension components (For example: Shocks, sway bars, springs and rubber bands) can be the only connection points between chassis and the axles. Chassis mounted servo cars can have an additional drag link between servo horn and knuckle/tie rod. (See Section 6 - A suspension link, control link or link)

We don't want for people to have to change their rigs (for example taking off the sway bars) and this rule enables all kinds of suspension components back.

[Zarizi Tech]

It was brought up to the Committee attention that there was a possible issue with the Performance Scale rules.
The rule 2.6.2 was as follow:
• 2.6.2 - Vehicles are limited to 2.2”/55.88mm wheels/rims or smaller at the bead surface.
With this limitation on the diameter of the external components of the wheels only 1.9 wheels would be legal (as in the mini class).
Performance Scale has been allowed to run 2.2 rims, as long as the tire still follows the maximum dimension mentioned on the following rules.
Therefore the Committee decided to change the rule 2.6.2 to the following:
• 2.6.2 - With a tire mounted, no exterior component of the wheel, including but not limited to the bead lock ring shall exceed 2.55"/64.77mm.

The Committee is trying the very best to make these rules last for more then a year, therefore we think it's in everybody's best interest to iron out all the mistakes that have been found and not wait for next year rules.
We apologize for these late changes, with some championships already running or about to start, but we felt clarification was necessary.
https://docs.google.com/document/d/1w23 ... sp=sharing