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Homemade electric bicycle: Luan reacts to a garage-built 'V9 Max' with a garage-door motor

A reaction to a video of someone who turned an old bicycle into an e-bike with a garage-door motor. What impresses, what worries and why buying one ready-made is safer.

By Luan Amancio · video published on October 8, 2026 · video narrated in Portuguese

Quick summary

Would you have the nerve to build your own electric bicycle in the garage? In this reaction video, Luan follows another person's homemade project that adapts an old bicycle with a garage-door motor and motorcycle batteries, and comments on each step with humor.

The project

The project's author uses a garage-door motor, cuts the hub and part of the frame, welds a steel structure to hold the motor, swaps the rear wheel, sprocket and chain, installs a brake and connects motorcycle batteries, with a half-grip throttle and a key. Luan comments on the makeshift build in a joking tone, but praises the ingenuity.

What worries

Luan draws attention to the wiring, done by simply plugging wires into each other, and to the safety of a structure welded in an improvised way. For him, the result is a V9 Max jury-rigged in the best possible way, but it's not something to ride out on the street.

Build or buy?

Luan points out that the base bicycle isn't that expensive and that, in the end, buying a ready-made e-bike, with hydraulic brakes, suspension and a warranty, is a safer decision. To choose well, see the site's ranking and reviews.

Conclusion

It's an entertainment video. For everyday use, the channel's recommendation is a ready-made e-bike from a trustworthy seller, bought through Mercado Livre.

Frequently asked questions

Can you turn an ordinary bicycle into an electric one?

Conversion kits exist. The video being reacted to shows a homemade version with a garage-door motor, and Luan comments that the safety of that build is doubtful.

Is it worth building your own e-bike?

For people who just want to get around, buying one ready-made is usually safer and comes with a warranty.

Prices and opinions reflect the video on the recording date. Prices change all the time (all in Brazilian reais); always check the listing.

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