Quote:
Originally Posted by chefdave
Rear Spoiler Idea Photo by chefdave42 | Photobucket
hi would this rear spoiler idea work on my dolphin motorhome. am planning to use plastic drain pipe or guttering to form base of spoiler then use gaffer/duct tape to cover up gaps for road testing. would it be better to angle down 12-15 degrees or keep parallel with roof line.
thanks
dave
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My 2 cents - - -
Better to angle it down, but probably no more than 12 degrees. While you're at it, if you can do the sides too, same 10 to 12 degree angle, that should help even more. Can't really see the picture too well, but it looks to me like that grey thing would do nothing other than possibly give it a clean separation edge if it was rounded before.
As far as your front end plywood "spoiler" grille block, I did something similar to that on my Jimmy with cardboard, except it was attached directly to the bumper and top of the grille (immediately below the edge of the hood). With your push-bar, my guess is the way you did it was the best, however, closing those gaps at the top and bottom would probably make it better yet.
Also, I had a couple clear pieces of Lexan I put in front of my headlights, too. It looks like you could do the same thing with yours - continue the plywood thing you've got on each side with Lexan (or plexiglass). That would give your front end a more rounded shape, which should help the air move past easier.