I need advice
Quick over view. I have an 03 Orbea Liege w/Ultegra components and Cane Creek Volos wheelset. About 9 months ago I changed out the chain, cassette, and chain rings. At the present time the parts have about 1000 to 1200 miles on them. Back in Oct or Nov of 08 had the new (Shimano) chain break off while climbing back to back hill passes at one the local bike rides. At one of the rest stop the mechanic slapped on a SRAM chain and I continued the ride with no other problems other than beat up bambinos and inner thigh contusion. I have noted that since the incident I have had issues with the ghost/phantom shifting which downs shift 1-2 gears. I normally feel it happen while I have heavy pressure on the cranks while climbing. On the flats its pretty okay(very rare to exprience ghost shifting). So I took the bike to the LBS and I was told that the rear derrailler cable was stretch and need a mild adjustment. All that corrected the phantom down shifting.
However, some reason now I am experiencing when shifting up to my upper lower gears (21-23) a slight lag or lost of resistance on the chain and it feels like I am freewheeling forward. Again I only feel this when the crank is under pressure/heavy load while climbing in a seated or standing position. Any ideas of whats going on with the drivetrain? Could it be that the cassette is not tight? Bad freewheel/Hub? High and Low limits on derrailer not right? Take it back to LBS?
I try to avoid going to the only LBS in my town because they are not good at Dx problems unless you the customer tell them what you want done to the bike. Please advise.
Thanks in advance
Quick over view. I have an 03 Orbea Liege w/Ultegra components and Cane Creek Volos wheelset. About 9 months ago I changed out the chain, cassette, and chain rings. At the present time the parts have about 1000 to 1200 miles on them. Back in Oct or Nov of 08 had the new (Shimano) chain break off while climbing back to back hill passes at one the local bike rides. At one of the rest stop the mechanic slapped on a SRAM chain and I continued the ride with no other problems other than beat up bambinos and inner thigh contusion. I have noted that since the incident I have had issues with the ghost/phantom shifting which downs shift 1-2 gears. I normally feel it happen while I have heavy pressure on the cranks while climbing. On the flats its pretty okay(very rare to exprience ghost shifting). So I took the bike to the LBS and I was told that the rear derrailler cable was stretch and need a mild adjustment. All that corrected the phantom down shifting.
However, some reason now I am experiencing when shifting up to my upper lower gears (21-23) a slight lag or lost of resistance on the chain and it feels like I am freewheeling forward. Again I only feel this when the crank is under pressure/heavy load while climbing in a seated or standing position. Any ideas of whats going on with the drivetrain? Could it be that the cassette is not tight? Bad freewheel/Hub? High and Low limits on derrailer not right? Take it back to LBS?
I try to avoid going to the only LBS in my town because they are not good at Dx problems unless you the customer tell them what you want done to the bike. Please advise.
Thanks in advance