Can I use my CycleOps Mag Trainer without the skewer?
The skewer that came with my trainer does not fit properly. Does anyone know if I can use it with a Shimano Nexus 3/8" cap nut?
Many axle nuts for an internal gear hub will fit directly without modification. If yours does not, then there are options to fix that, similar to the set from Tacx below.
As with many issues with trainers, there is a solution available for this issue.
This is a set of accessories designed to fit most solid or thru axle bikes. You would need to make sure that you get a set that correctly fits your bike.
All the clamp needs to do is hold the bike securely. If it holds securely and doesn't wobble it will be fine. I use an Elite trainer and have never used the skewer that came with it as I haven't had a problem with the one I have on my trainer wheel.