Looking for gatling gun help

Greets all. Long time reader. Friend of Search.

I'm working on a steampunk-ish Gatling gun arm. Good progress so far, but I would like to incorporate a backpack ammo pack and the feed chute. The pack should be easy; but I'm hitting a wall with the feed chute. Seems like there should be rectangular flexible cable guides or similar to adapt to the purpose, but I haven't found any. Any thoughts or suggestions that don't cost a kings ransom?
Thanks,
Mark

Flatten the sides of some flexible dryer vent hose.

I was doing some research myself on how to make a feed chute for my own costume, and this is what I came up with.

Below is a link to an actual feed chute. See how they're made up of sections with a taper on one side to allow the sections to bend?
http://www.google.com.my/imgres?img...act=rc&uact=3&dur=437&page=3&start=48&ndsp=28

I'm thinking of making the sections out of foam since it'll be east to cut and carve, then string them together with, well, a string(or 2, so the sections won't rotate around the string if there's only one). The tension of the strings should keep the sections together without the need for any glue, allowing easy replacement of any section(s) should they get damaged.

Takes a bit of work, but you'd end up with a fully customized chute to fit your steampunk theme.

short of the real thing, im thinking this is as close as you are going to find to anything 'ready made'

http://www.mcmaster.com/#drag-chains/=t96agj

its used a lot for cable management on CNC machines.