1.) Compared to most folding commuters, the Trail Viper has a tough and purposeful look that most people appreciated. Simply changing the air pressure makes the
tires suitable for pavement, dirt and sand. Performance is good everywhere, but
there is tread noise on cement or asphalt. 2.) The controls are basic but work fine.
The throttle proved vital, since the gearing is too short to pedal 15 mph. On the flat
the throttle gives you 20 mph. 3.) A key is required to turn the Trail Viper on. The
slide-in battery has the key switch, a fuse and am LED battery-condition gauge. 4.)
When the Trail Viper is folded, it is fairly compact with a built-in lifting handle. The
main frame hinge was a bit stiff on our bike.