I had an enlightening meeting with my brothers on last Saturday. One of them is a perfectionist. If something is not 100% working properly, he would fix that. Jacek was riding my Vado without the battery and listening to hear any noise. I can't remember all the actions he did to service my Vado but what I can remember was:
1. The thread for one of bolts of the kickstand wore out. He used another bolt, a nut and applied some special glue used for motorbikes. Now the kickstand holds firmly.
2. The front fender turned out to be unscrewed and it was rubbing the tire. Fixed.
3. The front brake pad was not adjusted properly and it was rubbing the rotor. Fixed.
4. My brothers found out the registration plate on my Vado was made of too thin metal sheet and it was bending, especially when the bike was transported in the car's trunk. They made a reinforcement plate. At the same time, it turned out the number plate mount had gone loose. Fixed.
My brother told me many bicycle parts loosen because of the vibration and fixes are necessary. Pity the Specialized LBS does not take so much care for detailed servicing as much as my brother does.
Now, an interesting speed test of my Vado 5 ridden by Jacek. He's an extremely fit person and an MTB rider himself. We had a strong breeze on Saturday. First, he rode the Vado with the battery removed. 2 x 2 km, the ride out downwind, the ride in upwind. The average speed was 24 km/h (14 mph). Next, he made the same test ride in Turbo mode. Ride out, 45 km/h (28 mph) and he could not ride any faster than that. Ride in, top speed 33 km/h (20.5 mph) and he could not ride any faster against the headwind. Average speed: 33+ km/h. He used 7% of the battery, so the extrapolated range would be 57 km for him in Turbo mode. He always takes forward riding position and is 70 kg (154 lbs). We've found the body weight, the riding position and the leg power were critical to the battery range.