It's pretty hard to get any serious weight off a bike. There usually isn't that much 'extra' stuff...
But if you're gonna try:
Aluminum or carbon fiber sportbike mufflers
Fiberglass seat pan
Plastic fenders
Build aluminum replacements for as much of the steel stuff as you can (battery box, rear caliper bracket, axle spacers, etc)
This would probably offer the most loss for the least trouble. Probably the biggest single gain would be a chain drive conversion if you can stand the cost. There'll also be few pounds to be found in different lighting, losing the tool kit/side covers/grab rails/etc, and a smaller battery. I would be EXTREMELY cautious about cutting on the frame, as these things are flexi-flyers as it is. Most 'bare' bike frames only weight between 30-40 pounds anyway, and there's little to be gained with aluminum as wall thickness/size has to get bigger to maintain strength. The main reason for the alloy frames is rigidity, not weight.
The lightweight race bikes you see don't have lights, horns, padded seats, starters, and sometime even charging systems. If you took off all that stuff, you could lose a 100 lbs...
'78E original owner
But if you're gonna try:
Aluminum or carbon fiber sportbike mufflers
Fiberglass seat pan
Plastic fenders
Build aluminum replacements for as much of the steel stuff as you can (battery box, rear caliper bracket, axle spacers, etc)
This would probably offer the most loss for the least trouble. Probably the biggest single gain would be a chain drive conversion if you can stand the cost. There'll also be few pounds to be found in different lighting, losing the tool kit/side covers/grab rails/etc, and a smaller battery. I would be EXTREMELY cautious about cutting on the frame, as these things are flexi-flyers as it is. Most 'bare' bike frames only weight between 30-40 pounds anyway, and there's little to be gained with aluminum as wall thickness/size has to get bigger to maintain strength. The main reason for the alloy frames is rigidity, not weight.
The lightweight race bikes you see don't have lights, horns, padded seats, starters, and sometime even charging systems. If you took off all that stuff, you could lose a 100 lbs...
'78E original owner
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