I just recently obtained a classic style bike frame that has horizontal fork-ends (people call them dropouts but they're different).
I wanted to use hollow axles and skewers on this bike but I think that the skewers will slip. I've seen those chain tug screws but what I'm concerned is the axle slipping out of the fork-end, not slipping in. (which is prevented by pulling the axle out, tensioning the chain)
Normally in single speed bikes, it's the chain that prevents the axle from slipping out of the frame. It's different in my case, as I will be fitting a derailleur on this. (the chain is long, and the derailleur tension might not be enough to keep the axle in)
Is there some sort of reverse chain tug or an axle block for a bike that prevents the axle from moving both ways?