- Location
- London
Not just any stuck chainring bolt - one stuck by my own stupidity.
Will try to explain as best as I can.
I was doing some tinkering with an unused 8 speed triple Shimano chainset, seeing if I could get some brand new chainrings from another Shimano 9 speed series to fit it.
In screwing the new 9 speed big ring into place I managed to forget that the bolts and nuts that secure the big ring also pass through the middle ring. So, with the middle out I screwed down the bolts on the big ring and "duh" was initially puzzled to see that there was some slack in the assembly even with the bolts screwed straight down.
Realising my stupidity (no other word for it) I unscrewed everything.
Except one bolt/nut assembly is stuck.
I can't get the peg spanner to grip on the nut on the back - essentially because the bolt is screwed in so much it stands high in the centre of the "nut" and stops the peg spanner seating properly.
Any suggestions?
After failing to get the peg spanner to grip it did occur to me that very often you don't have to use one as the nut is held tight against the metal of the ring and the bolt pulls against that friction as you undo it. But of course thanks to my cack-handedness, although the bolt/nut interface is tight - too tight - the bolt does not push against the chainring - there is a gap, even though the bolt and nut/sleeve are fastened tight - thanks to the missing middle ring. It did occur to me that maybe I could jam something in this gap like perhaps a small thin spanner but I don't have such a thing.
Clearly I am hoping for solution which doesn't damage my nice new crankset or nice new 44T Deore chainring.
Will try to explain as best as I can.
I was doing some tinkering with an unused 8 speed triple Shimano chainset, seeing if I could get some brand new chainrings from another Shimano 9 speed series to fit it.
In screwing the new 9 speed big ring into place I managed to forget that the bolts and nuts that secure the big ring also pass through the middle ring. So, with the middle out I screwed down the bolts on the big ring and "duh" was initially puzzled to see that there was some slack in the assembly even with the bolts screwed straight down.
Realising my stupidity (no other word for it) I unscrewed everything.
Except one bolt/nut assembly is stuck.
I can't get the peg spanner to grip on the nut on the back - essentially because the bolt is screwed in so much it stands high in the centre of the "nut" and stops the peg spanner seating properly.
Any suggestions?
After failing to get the peg spanner to grip it did occur to me that very often you don't have to use one as the nut is held tight against the metal of the ring and the bolt pulls against that friction as you undo it. But of course thanks to my cack-handedness, although the bolt/nut interface is tight - too tight - the bolt does not push against the chainring - there is a gap, even though the bolt and nut/sleeve are fastened tight - thanks to the missing middle ring. It did occur to me that maybe I could jam something in this gap like perhaps a small thin spanner but I don't have such a thing.
Clearly I am hoping for solution which doesn't damage my nice new crankset or nice new 44T Deore chainring.