When I moved to Ottawa, I didn’t know where to go to buy a bike. With the benefit of experience, I can tell other newcomers that their best bet is to go to G.M. Bertrand Cycles in Gatineau. They are at 167 Wellington Street. I recommend them because they have the most knowledgeable and helpful staff of any of the ten places or so I visited. Many of their staff members are bilingual and the rest have been happy to put up with my broken French. They have good products at reasonable prices and they stand behind them. When the front light they sold me failed after three weeks, they replaced it with a better one with no questions asked.
The Bike Dump seems to be the Ottawa bike shop that gets the best press. While I may not have had a representative experience, I saw no reason for which that praise is justified. Their bikes were overpriced and not in terribly good condition. They have bad hours, only accept cash, and have an indifferent staff. G.M. Bertrand is a much better choice.