What's the consensus on how much distance on level ground between the road and the bottom of the rock guard assuming it's a solid rubber piece and not the brush type?
If you read the installation recommendations for the Ultra-Guard, you'll see they recommend 4-1/2 to 5 inches of clearance between the bottom of the flap and the ground.
If it drags, it will certainly pick up rocks as you drive along.
Don Ford 2004 Safari Trek 31SBD (F53/V10 20,500GVW) '09 HHR 2LT or '97 Aerostar MiniVan (Remco driveshaft disconnect) for Towed vehicles BlueOx Aventa II Towbar - ReadyBrake Inertia Brake System
After having experienced a 4x4 being thrown by the wheels on our last MH, I personally can tell you that the hanging guard does its job. If it wasn't there the 4x4 would have went through the radiator and out the back and into the toad. Instead it was forced out the side from under the rig without damaging anything.
It bent the **** out of the flap. The flap was still there when we sold it. I have never had any rock damage on from the flap throwing up rocks on the last 4 toads we've owned.
The flap on our last MH and this one were about 2" from the road when aired up.
The mud flaps behind the wheels should be enough. The big flap is just trapping hot air kicking up rocks etc. Looks nice till you drag it through dip and the trailer hitch puts a big dent or cut in it.
John & Carol Life members 01 31'Sea View single slide, F53 V-10 with 134,000 miles and counting. 2012 Jeep Liberty Smi brake system Security by Bentley God Bless
I removed ours and it seemed the toad was getting more rock chips. I cut some off the bottom so it couldn't hit the road and it seems much better than it did originally with it on or with it off.
Ed & Ruby & the 2 cats 2001 Winnebago Brave 30W 7.4 gas Work Horse Chassis 99 Jeep Grand Cherokee
If your rock guard touches the ground, it will kick up rocks as you're going down the road. 5 inch clearance on level ground is what you're looking for. Any closer and you're going to defeat the purpose of having it. If it's all the way at the back of you're MH, the height my vary significantly when you're loaded and ready for travel.
Don Ford 2004 Safari Trek 31SBD (F53/V10 20,500GVW) '09 HHR 2LT or '97 Aerostar MiniVan (Remco driveshaft disconnect) for Towed vehicles BlueOx Aventa II Towbar - ReadyBrake Inertia Brake System