this post was submitted on 17 Aug 2023
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Motorized Bikes

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Motorized bikes describe the end-result of affixing motors to existing pedal bikes to convert them into homemade mopeds. Gas kits are the most popular, but electric conversion kits also exist.

Rules:

This community follows EP's Unified Community Rules.

B1. Motorized Bikes

Motorized bicycles include conversion kits, custom engine mounts, and custom bike builds. We're focused mostly on lower-power, pedal-bike conversions; other content outside of this isn't explicitly off-limits, but may be better suited for a different community.

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The engine mount finally cracked due to improper installation, but otherwise, I've been pretty happy with this one. I'm currently working on Rig V2, which will be on a new bike with a Phantom 85 V3. I gave this bike away for free to someone else.

Just for fun, here's a laundry list of some of the issues in this particular photo:

  • Missing filter: no fuel filter, although this was addressed not long after this picture was taken.

  • Carb not level: carb is at an angle due to clearance issues, although a different intake manifold and mods to the intake on the carb itself would have probably solved this. It still runs fine enough but might have been underperforming due to this.

  • Mediocre fenders: ModPD fenders are probably the bomb on a stock bike, but they're pretty flimsy and don't like to stay attached to this rattle machine. Still, plastic fenders like this are far safer than the full metal alternatives; these are far less likely to get wrapped around a wheel.

  • Bad engine mount: my down tube was fairly large, but I used a stock mounting bracket with longer bolts. This ended up being a major problem, as the bolts cross-threaded and eventually cracked away from the engine. There exists a proper large down tube mount, which I should've used from the start. That's mostly why I retired this bike, but I'm hoping the person I gave it to can find a way to fix that aspect of it.

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