Biking across the USA is like life, some disappointments along the way. However, Peter and Janos are very resourceful and will resolve this in no time. Fortunately Peter and Janos have a spare bike, or component parts to help with the repair. Can Schwinn be of any help? A bike should last longer than 615 miles. Keep advancing forward. We are very proud of what you are doing and accomplishing. Ron Peck, Co-Founder, Blind Judo Foundation.