Embarking on an e-bike conversion is an exciting project, and for those starting with a comfortable beach cruiser like the 3g Bikes Newport Deluxe, the possibilities are even more appealing. This article documents the initial planning stages of converting a 3G Bikes Newport Deluxe, known for its aluminum frame and robust 26×3.45” tires, into a capable electric beach cruiser. The primary goal is to achieve a comfortable 20mph riding speed with a range of 25-35 miles, perfect for leisurely beachside explorations.
One of the first hurdles encountered is the Newport Deluxe’s rear coaster brake system. To ensure safe and effective braking at e-bike speeds, upgrading to disc brakes is essential. The initial step involves retrofitting a front disc brake system, with parts already ordered to facilitate this upgrade. Once the front braking is addressed, the focus will shift to selecting and installing the motor and battery components. The aim is to find a motor and controller combination that not only provides sufficient power but also incorporates regenerative braking and the potential for a rear disc brake setup in the future.
Parts Consideration for a 3G Bikes E-Bike Conversion
The following is a preliminary parts list under consideration for this 3G Bikes e-bike conversion project. Feedback and insights are welcome, particularly regarding potential compatibility issues or overlooked aspects. The questions raised are part of the ongoing research process to ensure a smooth and efficient conversion.
Q128H-135, 48v 800w Motor
The 3G Bikes Newport Deluxe features an aluminum frame with a 128mm rear bolt-in spacing. While frame stretching is a possibility, exploring motor reconfiguration for a 120mm freewheel setup, utilizing spacers for proper alignment within the frame, seems like a more straightforward approach. A freewheel system offers versatility, accommodating both single-speed and multi-speed configurations. Initially, the plan is to retain the single-speed setup due to the bike’s original configuration, but the option to upgrade to a multi-speed system with a derailleur and shifter in the future is definitely on the radar. Integrating a disc brake setup with this motor is a priority, contingent on frame compatibility for a brake caliper.
S12SN 1000w, 40A Controller
Pairing the Q128H-135 motor with the S12SN 1000w, 40A controller should provide ample power to reach the desired speed and performance goals. Moreover, the higher-rated controller offers headroom for potential future power upgrades. Regenerative braking support is another key feature of this controller, which could serve as a supplementary rear braking system, although a dedicated disc brake remains the preferred primary rear brake for safety. Understanding the functionality of regenerative braking is important – is it an on/off system, or can it be modulated with a brake lever for more linear control? Another crucial aspect is speed limit control; ideally, the controller should allow for setting a speed limit rather than just a power limit, considering the upright riding posture of the 3G Bikes Newport Deluxe, which may not be ideal for very high speeds.
48V10AH/14AH CASE-08 Bottle Battery Pack
The CASE-08 bottle battery pack, available in 48V10AH and 14AH options, is being considered to power the e-bike conversion. While some versions offer an optional “inner controller,” it appears unlikely that this integrated controller would meet the project’s performance requirements. Therefore, opting for the battery pack without the inner controller is the current plan. Physical fitment within the 3G Bikes frame is a crucial factor that requires careful measurement and assessment to ensure proper and secure battery mounting.
S-LCD8 Screen & Thumb Throttle
An S-LCD8 screen is chosen for displaying essential riding data and controlling e-bike functions. For throttle control, a thumb throttle is preferred over a twist throttle, drawing from experience with ATV riding. However, the potential for interference with future rear gear shifters is acknowledged and will be considered in the final setup.
PAS (Pedal Assist System)
While not part of the initial conversion phase, integrating a Pedal Assist System (PAS) is planned as a future enhancement to improve riding efficiency and extend battery range, offering a more traditional e-biking experience alongside throttle control.
Wheel and Spoke Considerations
Integrating the motor into the wide 26” wheel of the 3G Bikes Newport Deluxe presents a wheel building challenge. Determining the correct spoke length is the first step. While professional bike shop wheel building services are readily available, tackling this aspect of the project personally is appealing as a valuable skill-building opportunity, especially with a growing family interest in cycling.
Conclusion
This marks the initial planning phase for converting a 3G Bikes Newport Deluxe into an electric beach cruiser. Addressing the braking system and carefully selecting and integrating the motor, controller, and battery are the primary focus areas. Further research and component measurements are necessary to refine the parts list and ensure a successful and enjoyable e-bike conversion. Stay tuned for updates as this project progresses!
