To start off, let me say that before I got into the motorized bicycle hobby I knew nothing about mechanics and engines. I didn’t even know what the difference between a 2 stroke engine and 4 stroke engine was and what a clutch, sprocket, carburetor, crankshaft, and ignition coil were. The poor quality on these Chinagirl engines actually makes them perfect for learning; they force you to fix the issues they have and in doing so learn about engines! Hopefully I’m a little more skilled now.
This bicycle is a Trex Navigator 2.0 that was sitting unused in my garage for a couple years. I went out with a couple times this summer when the weather was nice but quickly found out that pedaling a bike is pretty boring. So, I went on eBay and ordered a motorized bicycle kit and after installing it, almost crashed into a tree at 20mph because the kill switch stopped working and the clutch wouldn’t disengage. The pictures of the bike below are the result of about two months of work.
Top speed - 33 MPH flats, 39 MPH achieved downhill. No engine porting or carb tuning
Upgrade List (completed)
Aftermarket throttle
Front Basket
Speedometer
USB Power Bank
Sparks plug (NGK Iridium B6HIX)
iPhone mount
Unrestricted muffler (sounds like motorcycle and improved torque + acceleration. I didn’t want expansion chabecause it would be crazy loud)
Dual pull brake lever
Better quality fuel line
Rubber mounting
LED Rear light
LED Headlight (custom 3D printed mount to fit basket)
Tachometer
38T sprocket
Aftermarket brake pads
Aftermarket clutch lever
Aftermarket clutch pads
This bicycle is a Trex Navigator 2.0 that was sitting unused in my garage for a couple years. I went out with a couple times this summer when the weather was nice but quickly found out that pedaling a bike is pretty boring. So, I went on eBay and ordered a motorized bicycle kit and after installing it, almost crashed into a tree at 20mph because the kill switch stopped working and the clutch wouldn’t disengage. The pictures of the bike below are the result of about two months of work.
Top speed - 33 MPH flats, 39 MPH achieved downhill. No engine porting or carb tuning
Aftermarket throttle
Front Basket
Speedometer
USB Power Bank
Sparks plug (NGK Iridium B6HIX)
iPhone mount
Unrestricted muffler (sounds like motorcycle and improved torque + acceleration. I didn’t want expansion chabecause it would be crazy loud)
Dual pull brake lever
Better quality fuel line
Rubber mounting
LED Rear light
LED Headlight (custom 3D printed mount to fit basket)
Tachometer
38T sprocket
Aftermarket brake pads
Aftermarket clutch lever
Aftermarket clutch pads
Attachments
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