Need advice, Sturmey X-RF8(w) locking up.
02-22-20, 02:15 PM
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Need advice, Sturmey X-RF8(w) locking up.
Paging Dan Burkhart ...
Did some errands today and as I started off from my first stop in 3rd gear, I got a slip-stop which cleared up when I changed gears, but started happening across the range as I continued. I put it on the stand, checked the setup and made sure it’s aligned to spec but it continues to lock up after 1/2-3/4 crank rotation in 2nd, 3rd, 6th and 7th. It pedals freely in 1st, 4th, 5th and 8th. I’m using a Sturmey thumb shifter, not the supplied twist shifter, If that matters. I have less than 100 miles on it and the only issue I’ve had is occasional freewheeling in one of the mid-ranges, maybe 4th or 5th which I was attributing to it setting in and cable stretch. On the last ride shifting was fine. Any clues before I have to seek deeper skills?
Did some errands today and as I started off from my first stop in 3rd gear, I got a slip-stop which cleared up when I changed gears, but started happening across the range as I continued. I put it on the stand, checked the setup and made sure it’s aligned to spec but it continues to lock up after 1/2-3/4 crank rotation in 2nd, 3rd, 6th and 7th. It pedals freely in 1st, 4th, 5th and 8th. I’m using a Sturmey thumb shifter, not the supplied twist shifter, If that matters. I have less than 100 miles on it and the only issue I’ve had is occasional freewheeling in one of the mid-ranges, maybe 4th or 5th which I was attributing to it setting in and cable stretch. On the last ride shifting was fine. Any clues before I have to seek deeper skills?
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1987 Mercian Pro, 1985 Shogun 500, 197? Falcon San Remo, 1972 Peugeot PX-10, 1972 Schwinn Paramount P13-9, 1971 Peugeot PX-10, 1971 Raleigh International, 1970 Raleigh Professional Mark I
Curator/Team Mechanic: 2016 Dawes Streetfighter, 1984 Lotus Eclair, 1975 Motobecane Jubile Mixte, 1974 Raleigh Sports, 1973 Free Spirit Ted Williams, 1972 Raleigh Super Course, 1971 Philips Sport
1987 Mercian Pro, 1985 Shogun 500, 197? Falcon San Remo, 1972 Peugeot PX-10, 1972 Schwinn Paramount P13-9, 1971 Peugeot PX-10, 1971 Raleigh International, 1970 Raleigh Professional Mark I
Curator/Team Mechanic: 2016 Dawes Streetfighter, 1984 Lotus Eclair, 1975 Motobecane Jubile Mixte, 1974 Raleigh Sports, 1973 Free Spirit Ted Williams, 1972 Raleigh Super Course, 1971 Philips Sport
Last edited by ascherer; 02-22-20 at 02:30 PM. Reason: more detail on gears locking up
02-22-20, 03:22 PM
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