Author: Mini4Science Editor

What happens when a Boxstock Mini 4WD going over a Tamiya Japan Cup Junior Circuit Slope Jump?

What happens when you have a Boxstock Mini 4WD going over a Tamiya Japan Cup Junior Circuit Slope Jump section at full speed (~4.3m/s) with no brakes? Here is what our jump simulator shows at 0.1X (slow motion). We can also see the bounce effect of the car when landing. What do you think? Do […]

Mini 4WD B-MAX GP UK (May 2025) Event Diary

The event diary of the first Mini 4WD B-MAX GP UK held in London Morden on 3rd May 2025. Boxstock, B-MAX and Open Class Tamiya Mini 4WD cars race.

Which roller is the fastest?

Based on your feedback, we have improved the comparison chart by adding some photos of the rollers. We hope this makes it easier to read. Roller with the least friction is the fastest but certainly there are other important factors to consider too. Read the full report find out more. We used science to test […]

Motor magnets strength measured

Recently saw a post in a Mini 4WD group TAMIYA田宮四驅車情報站 on FB about measuring magnet strength using the “Compass” App. I am not sure how this can be done with the compass app but we did use a Magnetometer App to do some measurements before. We tested 9 motors: Stock double shaft (PRO), Rev Tuned […]

How good are your brakes?

How good are the brakes on your Mini 4WD? Do they perform as good as expected? We have a model to help you plan and estimate your setup.

What is the difference amongst the Tamiya Mini 4WD small diameter Low Profile Tyres?

What is the difference amongst the Tamiya Mini 4WD small diameter low profile tyres in terms of grip and bounce? Which one has the most grip? Which one has the lowest bounce rate? We conducted a scientific experiment to measure tyre grip and bounce rate of 7 sets of tyres.

Which Tamiya Mini 4WD roller is the best? We scientifically tested and compared 15 roller sets

Which is the best Tamiya Mini 4WD roller? We conducted a scientific experiment to measure friction and other properties of 15 sets of rollers.

What is the power and torque of a Tamiya Mini 4WD Hyper-Dash PRO Motor?

How much horsepower does a Tamiya Mini 4WD Hyper-Dash PRO motor generate? How much torque does it have? Where is the sweet power band of the motor? Let’s do some experiments to find out.

Friction

What is friction? Do you know how it relates to the weight of the object you are trying to move?

What is the difference amongst the Tamiya Mini 4WD sponge brake pads?

Do you know how to rank the Tamiya Mini 4WD brake sponge pads according to their stopping power? Do you know which one is the strongest? Is hard better than soft? Is red stronger than black? We conducted a scientific experiment to measure the frictional properties of the different brake pads and rank them according to their stopping power.