The bicycles have more knowledge.Like specification,brand,material,size and others.How can you explain to the customer that?
Firstly,you must know the all problems totally.And how to let the customers understand.
Secondly,the technical person is professional and engineer.You must communicate with them once you don't know something questions.Then the Customers can trust you.
Thirdly,you can't say i have no idea or something once face customers questions.You must learn about all bicycles details clearly.
Please get this bikes information together.