Instruction: Given a question and its related document, determine if the question is answerable by analyzing the information in the document. Output yes if the document addresses the question, or no otherwise.

Input:
Question: hi !  i have bought one of this , when drive up hill , when speed number should i use for climb easy ? # 2 or # 7 ? thank you .
Document: I bought this bike last spring to use around our marina. I was impressed with the quality, finish, construction and compact design that allowed easy storage on our boat. The only negative comment I had at that time was that the design put more weight on the rear tire and less on the motorized front, reducing traction and required some tender throttle control.We didn't use the bike much since we only get to the marina on weekends. One day while it was out, it began to rain.
I love this bike. It gets me around the city pretty fast. I love the folding feature, I always use it because if I'm feeling lazy I'll throw it in someone's car and they'll take me home. I also like the paint on this bike. It's really nice. One thing I dislike is how the battery doesn't display the right amount of energy you have left. It sucks because it will go out when I really need it like when I'm on a hill.
The Prodeco Mariner 7 is a high quality bike which meets all of its advertised features. The bike is very easy to ride, shifts easily, quickly and smoothly. The battery life is very good also. We have had many people look at the bike and ask questions about it. Highly recommended if you require a folding bike due to space limitations.
The unit is billed as a &#34; Mariner&#34; but we had two of them in storage bags in a locker on our boat and after 2 months one of the motors failed. We had to package it up and ship it to Florida at our expense. We had to pay $249 for a new motor. When it was shipped to us, it looked as though a 6 year old packaged it.
And I'm looking for excuses to ride it.. Assembly was very easy (just a few parts). Comes in a box about 4' x 2' x 3' . I don't feel like a big guy on a little bike with this one. It feels normal size.I added a photo of the bike in my trunk for reference.
The only problem about this ebike is its weight. Even without the battery, it is not easily carried folded, especially if you have to make it a floor or two up. Other than that, the bike rides well; the motor is pretty silent; it is easy to shift from the power-assited mode to the bike mode, thereby saving on battery life. I use the motor when going to work, and bike my way back in the evening, when sweating is no longer a concern.
However, downhill speed of 30 feels pretty stable for a small bike so it makes me wonder why they chose an underpowered motor.- Range is good. About 30 miles real-life with hills and so on.- Could use from a better gearing system.- Pedals are too small- No flats in a lot of miles.
Cheap plastic.- It's extremely tough to get the battery in and slide it in a position where you can turn the key (can't be all the way in)- Front shocks are cool but probably add unnecessary weight. Hitting a pothole makes the rear feel like you hit a curb at full speed.- Only way to get to use the motor is by twisting the throttle. That's a far cry from getting electric assist, making it more of a underpowered moped than a electric bike.- It' slow.
would try another prodeco e bike in maybe 7 to 10 years. (they will have either improved the build quality or there will be too many reviews like this) well it's back to a sym scooter with a polini 70cc bore kit. cost about 400 bucks more but I won't be worrying about the rear tire falling off. happy trails.
I've never left a review online before until now because this bike is worth you all knowing it's terrific! I'm 5'2" and fit just fine. I bought this because I have the ol' L4-5/S1 low back trauma drama you don't need to read about and it inhibits being able to ride up any hills. Now, I zip right up without any pedal power.
Answer: yes