The Mushroom Bowl is interested in keeping a fun and friendly atmosphere. Therefore, although we do not actively force racers to undergo tech inspection, we ask racers to follow the below rules in order to maintain a fair and competitive environment. In general, these rules reflect ROAR rules and guidelines.
Due to the number of participants, we do not run every available class. This is a list of our most common classes, but if we have 3 or more participants show up for another class, we will run it.
Check out our racing fees page for details on racing fees and transponder rentals.
Both rubber and foam tires are run in the same class. Traction compound is allowed -- odorless only.
We are currently running USVTA in the same class as standard sedan touring cars since the power specifications are the same.
There are 3 qualifying heats before the mains. All races are 6 minutes in length with at most 6 racers per race. Reshuffling of the class takes place after the 2nd heat.
| Motor Type / Size | Battery Type |
| 27T Brushed | 4-cell NiMH / NiCD |
| 19T Brushed | 1S (3.7v) Li-Poly |
| 17.5T Brushless | 4-cell NiMH / NiCD |
| 13.5T Brushless | 1S (3.7v) Li-Poly |
There is no limit on the size of the packs used. Li-Poly packs must be hardcase per ROAR rules.
Tires are standard 1/12 scale foam with no compound restrictions. Traction compound is allowed -- odorless only.
There are 3 qualifying heats before the mains. All races are 8 minutes in length with at most 6 racers per race. Reshuffling of the class takes place after the 2nd heat.
1/18 Electric Mini's
Coming Soon
1/18 Electric Mini-T's
Coming Soon
Specifics of this class's rules are still be worked on and will be posted shortly.

