Description
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5B Rovan Baja 1/5 Scale Overview
The 5B Rovan Baja is a genuine 1/5 scale gasoline Baja buggy engineered for hardcore off-road driving, durability, and consistent large-scale performance. This Black & White Monster BB edition uses current-production High Strength Grade A Rovan components and is not a factory second, Grade B unit, or older stock. Rovan builds this platform for real-world bashing where strength, serviceability, and reliability matter.
A proven 29cc single-cylinder, air-cooled, two-stroke gasoline engine powers the 5B Rovan Baja and delivers stock speeds exceeding 40 MPH. As a result, throttle response stays strong while torque delivery remains smooth across dirt, grass, and open terrain.
Chassis, Drivetrain, and Suspension
The 5B Rovan Baja uses a rear-wheel-drive layout with a rear axle brake to simplify maintenance and improve long-term reliability. An 8000 RPM performance clutch transfers power efficiently under load. Second-generation reinforced front and rear suspension components increase durability during aggressive driving and rough landings.
Six-millimeter shocks control suspension travel, while second-generation wasteland tires mounted on reinforced wheel hubs provide consistent traction across mixed off-road surfaces. High-strength ABS plastic components flex under impact and recover, helping prevent damage during crashes.
Engine and Exhaust Performance
At the core of the 5B Rovan Baja sits a genuine 29cc two-stroke gasoline engine equipped with a 997 carburetor. This carburetor replaces the Walbro unit and remains compatible with 23cc to 32cc Zenoah, CY, HPI Baja, RV, and KM 5B, 5T, and 5SC platforms. A high-quality tuned pipe exhaust improves throttle response and produces an aggressive performance sound. Optional mufflers are available for quieter operation.
Electronics and Radio System
Electronics include a 2.4GHz six-channel radio system tested beyond 600 feet with stable signal performance. Although operation requires only two channels, trim adjustments remain easily accessible under the rear transmitter cover. Metal gear steering and throttle components provide precise control and reliable braking. A built-in SC6V 2000mAh battery supplies consistent power during extended run sessions.
Assembly and Operation – 5B Rovan Baja
Out of the Box: Ready to race once the wheels are installed and the car battery has been charged. A minimum two-hour charge is recommended.
Battery Charging:
The buggy includes an external charging port and USB charger, allowing charging without disassembly. Allow the battery to cool for 30 minutes after a full charge before operation. Remove the charger within 30 minutes of reaching full charge to extend battery life. Store the battery fully charged when not in use.Crash Durability:
Minor crashes rarely cause significant damage. Reinforced suspension components and flexible ABS materials absorb impacts effectively during normal off-road driving.Fuel Mixing – 5B Rovan Baja
Use a 25:1 gasoline-to-oil ratio, equal to 151.4 ml of oil per gallon of gasoline. First, fill the oil compartment of the mixing jug to the 25:1 mark. Then, fill the gasoline compartment to the same level. Use non-synthetic, mineral-based two-cycle oil. Other compatible mineral oils may also be used.
Radio Setup and Operation
This six-channel radio primarily uses two channels. Trim adjustments control steering trim, throttle and brake trim, and control extents, allowing fine tuning of handling and braking response.
Starting Instructions
Ensure the car and radio power on and respond correctly.
Set the choke to the vertical closed position.
Prime the carburetor three to four times, or until fuel becomes visible.
Pull the starter gently until engagement, then use short, quick pulls.
Once the engine fires, turn off the choke and pull again to start.
Never crank more than three times with the choke engaged.Break-In Process – 5B Rovan Baja
Initial Run: Run the buggy at idle to one-quarter throttle for approximately five minutes, then allow the engine to cool completely.
Second Run: Repeat the process for ten minutes, then cool down.
Third Run: Increase throttle slightly and run for eight to ten minutes, then cool.
Subsequent Runs: Continue for about five cycles while monitoring airflow and debris. A clean engine runs cooler.
Final Break-In: Run at full throttle and burn through one full tank of fuel.
Post-Break-In: Check and snug the exhaust pipe.
Before each run, inspect all bolts and fasteners. Apply thread locker to clutch and brake assembly bolts after cleaning threads with alcohol.
Rigid aluminum upgrades may appear attractive, but high-strength ABS plastic flexes and recovers, which helps prevent secondary damage during off-road use.
All items offered by 5TRC are brand new, and approximately 99.9 percent of customers experience no issues. If you are new to the hobby, we strongly recommend reviewing our instructional videos available on YouTube. Rofun and Rovan products sold by 5TRC are sold without warranty, express or implied. Due to the nature of the hobby, these vehicles are frequently customized or modified by end users, and accordingly all products are sold without guarantees of any kind.
These items can cause severe burns from hot exhaust components if handled improperly, and improper use may result in serious injury or death due to impact to the operator, bystanders, or pets within the operating area. By purchasing this product, you agree to hold harmless 5TRC from any and all liability arising from the use or misuse of this product. Product images may not accurately represent the exact color of the model purchased and are provided for illustrative purposes to display mechanical features only.
Disclaimer and Safety Notice
All items offered by 5TRC are brand new. Approximately 99.9 percent of customers experience no issues. If you are new to the hobby, we strongly recommend reviewing our instructional videos available on YouTube. Rofun and Rovan products sold by 5TRC are sold without warranty, express or implied. Due to the nature of the hobby, these vehicles are frequently customized or modified by end users. Accordingly, all products are sold without guarantees of any kind. These items can cause severe burns from hot exhaust components if handled improperly. Improper use may also result in serious injury or death due to impact to the operator, bystanders, or pets within the operating area. By purchasing this product, you agree to hold harmless 5TRC from any and all liability arising from the use or misuse of this product.
Product images may not accurately represent the exact color of the model purchased and are provided for illustrative purposes to display mechanical features only.
Some of our items may include links to products on Amazon. As an Amazon Associate, I earn from qualifying purchases. This means that if you click on a link to make a purchase, I may receive a small commission at no additional cost to you.
Questions? TextMail: 937-625-0005
5TRC.com, USA’s #1 Rofun Distributor
Plan a good weather day to Race!
-5B Rovan Baja-
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