Hi there

I'm very nervous of taking off the rear derailleur or going much further than taking off wheels, pedals, and handlebars/cockpit. Can anyone recommend a decent bike box/bag that might give my pride and joy a fighting chance? I've been looking at the Evoc bike bag (I note a new version is due out imminently) and a BikeBoxAlan but suspect in both cases my big old bike might be a tight fit. Anyone able to share their experiences?