# Building My Neighbors A Sick Cargo Bike Source: https://www.youtube.com/watch?v=c32fIgvR7pE Recap page: https://rapidrecap.app/video/c32fIgvR7pE Generated: 2026-08-14T15:33:10.884+00:00 --- ## The Gist A custom Mongoose Envoy cargo bike is built from the frame up to haul young kids and gear for a deserving neighborhood family. ## Quick Overview A custom Mongoose Envoy cargo bike is fully built and delivered to a local family with young children to help them easily haul gear and kids on rides. The build features hydraulic disc brakes, an upgraded drivetrain, a 3D-printed head badge featuring a custom 'Ride On' design honoring the family grandfather, and custom 3D-printed mounts for drink holders, a speaker, and a pump-slash-tail-light combo. **Key Points:** - The build starts with a Mongoose Envoy aluminum longtail cargo bike frame. - Hydraulic disc brakes and a mountain bike derailleur are installed to handle the extra weight of hauling two kids. - A custom 3D-printed head badge reading 'Ride On' is created to honor the family grandfather who was an avid cyclist. - A custom 3D-printed Bluetooth speaker holder is mounted to the frame at a 31-degree angle so the speaker faces upward. - Custom 3D-printed dual cup holders are secured to the rear rack using zip ties through integrated channels. - A Flextail pump and tail light combo is attached near the rear using a custom 3D-printed mount with Clik valve adapters. - A custom balance bike carrier is mounted to the rear rack to securely hold a Strider bike alongside woom helmets. - The completed cargo bike is successfully delivered to the Baker family at a local restaurant to the excitement of the kids. ![Screenshot at 14:47: The completed custom Mongoose Envoy cargo bike fully outfitted with a rear kid carrier, custom decals, cup holders, and a bike rack.](https://ss.rapidrecap.app/screens/c32fIgvR7pE/00-14-47.jpg) **Context:** Neighbors who frequently ride bicycles with their young children needed a reliable way to haul gear and toddlers. Seth from Berm Peak offered to build them a fully customized cargo bike under the condition that he had complete creative freedom over the project, dedicating the build to the memory of the children's grandfather who was a passionate cyclist. ## Detailed Analysis The project begins by stripping a brand-new Mongoose Envoy cargo bike down to its bare frame in the workshop to replace the stock components with higher-performance parts. Seth installs a longer stem and Redshift riser handlebars to accommodate taller parents, and upgrades the braking system to hydraulic disc brakes with internal frame routing for better stopping power. A mountain bike derailleur with a clutch is added to manage the long chain over bumps, and the stock kickstand is secured using custom 3D-printed blocks and hardware to support heavy loads safely. Customization includes printing a green 'Ride On' head badge that replicates a memorial tattoo shared by family members. For extra utility, custom 3D-printed brackets are designed and attached to hold a Sony Bluetooth speaker, dual water bottles, and a portable pump with a tail light. A specialized rear balance bike carrier is bolted onto the top rack to transport a Strider bike alongside woom helmets. The finished bike is ridden to a local gathering spot where the parents and children are surprised with the final build, resulting in an overwhelmingly enthusiastic response from the kids. ### Frame Disassembly and Cockpit Setup The stock Mongoose Envoy is stripped down to the bare metal to upgrade the components, handlebars, and braking system. - The bike is completely disassembled in the workshop to access all the metal components for cable and brake upgrades. - A long stem and Redshift riser handlebars are installed to shift the parents' weight forward and improve comfort. - Hydraulic disc brakes are added to provide the necessary stopping power for a 6-foot-4 father carrying two children. ![Screenshot at 02:16: The Mongoose Envoy stripped down to its bare metal frame in the workshop before component upgrades begin.](https://ss.rapidrecap.app/screens/c32fIgvR7pE/00-02-16.jpg) ### Drivetrain and Kickstand Modifications A mountain bike derailleur and a heavy-duty kickstand setup are installed to handle rugged terrain and heavy loads. - A mountain bike derailleur featuring a clutch is installed to keep the long chain from slapping against the frame over rough terrain. - The stock kickstand requires hours of modification using 3D-printed blocks and hardware to achieve a secure and safe fit. - Running boards are kept on the bike to provide future mounting options for a custom rack system. ![Screenshot at 05:08: Seth struggles with mounting the kickstand before resolving the fit using 3D-printed blocks.](https://ss.rapidrecap.app/screens/c32fIgvR7pE/00-05-08.jpg) ### Custom Head Badge Creation A 3D-printed head badge is created to honor the family grandfather and set a positive tone for the build. - A custom 'Ride On' logo is reverse-engineered from a memorial tattoo worn by family members. - The 3D-printed badge is heated up and pressed onto the head tube of the bike to conform to its curved shape. - Bright green filament is chosen for the badge to match the specific color requested by the family. ![Screenshot at 06:59: The finished bright green 'Ride On' 3D-printed head badge installed on the front head tube of the cargo bike.](https://ss.rapidrecap.app/screens/c32fIgvR7pE/00-06-59.jpg) ### Accessories and 3D Printed Mounts Custom 3D-printed brackets are designed and installed to hold a speaker, cup holders, and a pump. - A custom Bluetooth speaker holder is printed at a 31-degree angle so the speaker faces upward on the frame. - Dual cup holders are 3D-printed and secured to the rear rack using zip ties through integrated channels. - A portable Flextail pump and tail light combo is mounted near the rear with Clik valve adapters so the kids can easily inflate their own tires. ![Screenshot at 11:47: The compact Flextail pump and tail light combo equipped with a Clik valve adapter for easy tire inflation.](https://ss.rapidrecap.app/screens/c32fIgvR7pE/00-11-47.jpg) ### Balance Bike Carrier and Final Reveal A custom rear carrier for a Strider balance bike is added, and the finished cargo bike is delivered to the family. - A custom 3D-printed bracket is attached to the rear rack to securely hold a 16-inch Strider balance bike. - The finished cargo bike features woom helmets, dual cup holders, bells, and custom green side panels with 'CA-EV' decals. - The Baker family is surprised at a local restaurant, and the children immediately test out riding the custom setup. ![Screenshot at 17:18: The father rides the custom cargo bike carrying both children and the attached Strider balance bike down a trail.](https://ss.rapidrecap.app/screens/c32fIgvR7pE/00-17-18.jpg)