dpsper:

I use "Aerotrend" tubing for just that purpose. Makes a whale of a difference in the mess.

http://www.aerotrend.com

The silicone tubing comes in several sizes, ID from 1/4" to 3/4"and standard length is one foot, longer by special order. Just one item in their line.

It also works very well for a fully enclosed engine. I've attached a picture of the right engine nacelle of my "Tiggerkitty," the exhaust is the pipe in the upper left.

You do have to test when using these pipes, some engines do not want to run well with them.

HTH.

Bill.

PS: Due to the higher exhaust temperature, these pipes are not recommended for 4-stroke engines. wr.