Our BUDGET SURRON Build: Controller Upgrade! | Episode 2

Summary

In this video, the hosts continue their budget build series for the Surron electric bike. They focus on upgrading the bike's power with a BAC 4000 controller, which boosts performance from 4,800 to 5,600 watts and increases torque. The video includes a tutorial on using the Emoto Bros tuning app to adjust settings and showcases speed tests comparing the upgraded and stock setups. The results show noticeable improvements in speed and acceleration. The video wraps up with a mention of future upgrades, including suspension options, and encourages viewers to subscribe for more content.

Takeaways

• 🚴 The video is part of the 'Siren Budget Build' series, specifically episode 2, where they upgrade a bike.
• ⚡ The focus of the video is on upgrading the controller to a BAC 4000 kit, which boosts the bike's power output.
• 🔋 The BAC 4000 increases the bike's power from 4800 watts to 5600 watts, providing a significant torque boost.
• 💡 The phase amps of the bike increase from 215 to 450, further enhancing performance.
• 💻 The Emoto Bros Tuna app is used to configure and monitor the BAC 4000 settings, making it easy to adjust parameters like kilowatts and phase amps.
• 💵 The BAC 4000 kit was purchased second-hand for £650, making it a budget-friendly upgrade compared to the new price of £1200.
• 🏁 Top speed tests show that the upgrade increases the top speed by 3 mph and reduces acceleration times, notably shaving 2 seconds off the 0-40 mph time.
• 🚴‍♂️ On a longer stretch, the upgraded bike hit 56 mph, but this was aided by a slight downhill.
• 🛠️ The upgrade has greatly improved the bike's power and trail-riding capabilities, though it has reduced its range.
• 📅 Next week's episode will focus on budget-friendly front suspension fork options for the bike.

Q & A

What is the main focus of this YouTube video?

The video focuses on upgrading a Surron bike by installing the BAC 4000 controller kit and testing its impact on power, speed, and acceleration.

What is the BAC 4000 controller kit and what does it do?

The BAC 4000 controller kit is an upgrade that increases the power output of the Surron bike, providing an additional 1,000 watts of power, raising the total to 5,600 watts from the stock 4,800 watts. It also boosts torque by increasing phase amps from 215 to 450.

How much does the BAC 4000 controller cost in this video?

In the video, the BAC 4000 controller was purchased second-hand for £650, which is considered budget-friendly compared to the new price of over £1,200.

What app is used to tune the BAC 4000 and how is it connected?

The Emoto Bros tuner app is used to configure the BAC 4000. The controller connects to the bike via Bluetooth, allowing easy adjustments through the app.

What power settings were used during the top speed test?

During the top speed test, the bike was set to 5.6 kilowatts of power and 415 phase amps, which is an upgrade from the standard 4.8 kilowatts and 250 phase amps.

What were the results of the top speed test after upgrading the controller?

The top speed increased by 3 mph, reaching 43 mph. The 0-40 mph time was reduced by 2 seconds, and the 0-20 mph time was improved by nearly half a second.

Did the upgrade affect the bike's range?

Yes, the video mentions that while the upgrade made the bike more powerful, it reduced the bike's range, which is now a concern.

What future upgrades are planned for the bike?

In the next episode, the video will discuss the best budget front fork options for improving the bike's front suspension.

How accurate were the speed tests mentioned in the video?

The speed tests were mostly accurate, though one of the higher top speeds (56 mph) was reached on a slight downhill, so it might not reflect flat-terrain performance.

How can viewers ask technical questions about the bike modifications?

Viewers can ask technical questions by leaving comments on the video or sending direct messages (DMs) on Instagram, where the creators will answer any bike-related queries.