Suggestions needed - bike storage solution

[weaponsgrade]

Thanks!, here are the parts:

https://www.mcmaster.com/#strut-chan...lleys/=17jeyti
https://www.mcmaster.com/#strut-chan...lleys/=17jf0fs
http://www.homedepot.com/p/10-ft-12-...10EG/202714274

I did consider u-brackets sliding along a rod, but in my case I wanted to hang five bikes in as small a space as I could. I was concerned about the rod bending if it was supported only at the ends. I've got 5 bikes hanging up and when pushed together it takes up about 4 feet of space. The total length of channel I'm using is maybe about 8 feet and spans across a door. But, the door is only blocked when I'm sliding the bikes out. The trolley doesn't glide within the channel as smoothly as I hoped, but it works well enough. I showed my brother the setup and he promptly built one for himself.