Rear Mud Flaps

[Dave Leeper]

We just got back from OBX bike week. Unhooked the trailer and i see that the whole back of the MH is just all nasty dirty road grime,
So i'm thinking about putting on a Rock Guard flap.
Now what is better a Solid one piece or a Rubber Strips.

[AFChap]

Strips/"hula skirt" type will cause less damage to whatever you are towing behind the rig. If you do put a full-width flap on, make sure it clears the road surface by 6-8 inches to minimize sweeping up rocks etc

[azloafer]

Quote:

Originally Posted by Dave Leeper We just got back from OBX bike week. Unhooked the trailer and i see that the whole back of the MH is just all nasty dirty road grime, So I'm thinking about putting on a Rock Guard flap. Now what is better a Solid one piece or a Rubber Strips.

We had one on a prior coach and it did nothing to keep the back clean so this time we went with the flaps behind the rear wheels. At least we can stop some of the rocks before they damage our own radiator or someones vehicle behind us. Happy Trails, Joe

[H. Miller]

Neither will help the problem you speak of. Rock guards and mud flaps are just that.......... guards against rocks and mud (solids) being thrown out the back of your vehicle. They protect a toad or other cars behind you.
A dirty rear end is caused by the tubulence and low pressure created by pushing a barn door down the road at 60 mph. Only help would be the air deflector (downward) seen on some coaches at the top rear. That would help "fill" the low pressure area and not suck so much dirt, dust and grime into that area (my apologies to Mr. Bernoulli)

[Senior Chief]

This product Aerodynamic Fuel Economy Savers for Road Vehicles is said to reduce the dirt on the back of your rig, as well as improving fuel mileage and handling.

We plan on installing a set soon.

[Hikerdogs]

Quote:

Originally Posted by H. Miller Neither will help the problem you speak of. Rock guards and mud flaps are just that.......... guards against rocks and mud (solids) being thrown out the back of your vehicle. They protect a toad or other cars behind you. A dirty rear end is caused by the tubulence and low pressure created by pushing a barn door down the road at 60 mph. Only help would be the air deflector (downward) seen on some coaches at the top rear. That would help "fill" the low pressure area and not suck so much dirt, dust and grime into that area (my apologies to Mr. Bernoulli)

Our experience is quite different. Before we installed an UltraGuard full length mud flap the back of our coach got so filthy it turned from white to a dark shade of brown. It was so bad you couldn't see the tail lights or read the license plate. The toad was so dirty you had to wash the windows before you could drive it.

We installed the mud flap right under the rear bumper. I made cutouts for the generator exhaust and the trailer hitch. According to the manufacturer the bottom of the flap should be a minimum of 4" off the ground with the coach fully loaded for travel.

After the installation we still get some dust and dirt on the motorhome but it's improved by 90%. Now you can unhook the toad and drive it away without having to clean it.

[bachler]

Our DP. Came with a full flap; Oh it looked Impressive the coach name on a chrome plate the full nine yards;The facts. are like this. You need air movement behind the coach, It comes from the top, sides ,and the bottom of the coach, That is IT.; now you can try to stop it from one area it will come from another. I like to move that air away from back there. So I removed That full Flap, puta flap behind each wheel;; The results were almost impossable to beleive;; The rear of the coach Only got a little bit of vapor on it, The tow car picked up little dirt , (norock chips) And the cat 330 At 58 MPH. would get 10 MPG; I atribute that to the removel of that Flap (parachute) We were dragging along for no good;; You need to have the air flow under the coach. Unless you want it to be forced up into the coach and through the rad; Also remember and rock that is kicked up Is at a standestill in relation to the ground. It is only raised up and the car/truck runs into it..Check all the facts; They are interesting... Life is good;;

[Pairajays]

Been there done that, tried them all. IMO, here is the best. Protect-a-Tow

[Techie]

On our last 2 rigs (1 gas the other a DP) the rear mudflap was just short of useless. The protect-a-tow is definitely the best way to protect what's behind the rig and will keep the towing gear and the back of the rig much cleaner.

[BigV]

Mudflap wont make a difference. Your coach has a low pressure area behind it that causes wind turbulence. That turbulence causes dirt and water to swirl around and hang out a while.

You have to have something that breaks that up. The old station wagons used to have a small air foil on the back of the luggage racks to help with it. Seen it on some mini-vans as well.

I hate passing someone with one of those big brooms across the back. They toss crap everywhere.