I have been traveling a lot lately and want to know how I can keep my brushes from getting bent up and broken in my cosmetic bag?

You might have a broken belt

Whenever I travel I pack my face wash and other liquids in zip-lock bags so that if and when they leak the mess is contained and clean up is much easier than washing everything.

I always pack according to this link. It's so helpful.
http://gbjorn.wordpress.com/2010/07/09/how-to-pack-a-travel-toiletry-bag-to-carry-on-an-airplane/

http://www.ebags.com/product/tumi/alpha-hanging-travel-kit/109729?productid=1289279&sourceID=COMJFEED&PID=3010657

what is the model number? is the motor running? it the brush under it turning? is there a broken belt? Is the cannister or bag full? let me know these things...thanks

I manage a body shop, is it your hood or trunk, I can tell you after that, just confused, because you said you where in reverse.

Check the wheels and axles for damage or bent shafts. Remove the bottom cover and inspect the brush roller for damage--breakage of the roller, bad or broken end bearings, missing brush sections, or something stuck to the roller like a wad of gum or something. Hope this helps!

You could try contacting Hoover for parts availability. If it's and older WindTunnel and Hoover no longer has the part, try eBay.

check the belt, it might be stretched or broken
or carpet fibers and hairs may have clogged up the brushes to keep them from rotating

let me know if this isn't the problem