- Make sure the valve isn't turning with the nut (i.e. use one set of pliers to hold the valve in place)
- Try soaking the nut/threads with a penetrating oil
- Try gently heating up the valve/nut with a torch or heat gun (don't do this if your rim is carbon, make sure there's no excess oil/lubricant in the area before doing this)
- Try removing it from the other end, the rubber plug on the inner side might be easier to cut away than the nut
- Hacksaw/rotary tool the valve flush with then nut with an appropriate blade, then hacksaw the nut from above. Hold the wheel in a vise if you have one to avoid accidentally skipping/nicking the rim
Even with carbon rims I’d still heat the valve stem. Let the heat conduct throughout. Don’t apply heat near the rim, just let it conduct down through valve stem. I’d likely give it a few heat/chill cycles (water will do). These can often break the bond that has formed.
put a valve core remover over the valve to hold the valve in place then use pliers to turn the nut (fingers _might_ work). Give everything a good clean/inspection afterwards
Use the correct sized spanner/wrench for the nut as a starting point. You should remove the tire and sometimes you’ll find that there something to grab on to on the end of the valve inside the rim. My mucoff valves have an Allen/hex cut out on the bottom exactly for this reason.
Two sets of pliers or molgrips will sort this - the whole thing can rotate as others have mentioned.
Everyone on tubeless needs a set of pliers in their multitool for this occurrence - shouldn't happen with regular inspection of the valves but easy to forget. Know of a few instances of riders being properly stranded on MTB rides with a corroded locknut, because you can't really improvise a solution in the absence of pliers.
Tubeless or regular tubed tire? If it's a regular tube I might try removing the tire and try tearing the inner tube away from the valve to see if you might be able to pull the valve stem through the rim or at least give you a bit more space to work with before cutting the valve stem.
Remove the tire. Apply pressure to the rubber portion of the valve that sits inside the wheel , effectively pushing it outwards. Use pliers. Done.
- Make sure the valve isn't turning with the nut (i.e. use one set of pliers to hold the valve in place) - Try soaking the nut/threads with a penetrating oil - Try gently heating up the valve/nut with a torch or heat gun (don't do this if your rim is carbon, make sure there's no excess oil/lubricant in the area before doing this) - Try removing it from the other end, the rubber plug on the inner side might be easier to cut away than the nut - Hacksaw/rotary tool the valve flush with then nut with an appropriate blade, then hacksaw the nut from above. Hold the wheel in a vise if you have one to avoid accidentally skipping/nicking the rim
Even with carbon rims I’d still heat the valve stem. Let the heat conduct throughout. Don’t apply heat near the rim, just let it conduct down through valve stem. I’d likely give it a few heat/chill cycles (water will do). These can often break the bond that has formed.
put a valve core remover over the valve to hold the valve in place then use pliers to turn the nut (fingers _might_ work). Give everything a good clean/inspection afterwards
Ignore this, I didn't read your original comment properly.
Use the correct sized spanner/wrench for the nut as a starting point. You should remove the tire and sometimes you’ll find that there something to grab on to on the end of the valve inside the rim. My mucoff valves have an Allen/hex cut out on the bottom exactly for this reason.
Two sets of pliers or molgrips will sort this - the whole thing can rotate as others have mentioned. Everyone on tubeless needs a set of pliers in their multitool for this occurrence - shouldn't happen with regular inspection of the valves but easy to forget. Know of a few instances of riders being properly stranded on MTB rides with a corroded locknut, because you can't really improvise a solution in the absence of pliers.
It looks like the threads are all jammed up with crap? Try running a knife edge along them to get some of the crap out, does the nut move then?
Tubeless or regular tubed tire? If it's a regular tube I might try removing the tire and try tearing the inner tube away from the valve to see if you might be able to pull the valve stem through the rim or at least give you a bit more space to work with before cutting the valve stem.