Jayco RV Owners Forum

Thread Tools Display Modes
Old 09-17-2015, 05:35 PM   #1
Senior Member
Join Date: May 2015
Location: Dixon
Posts: 293
Mud flap ?

My class C had a solid mud flap across the back end. In motor home magazine this month they say that it can reduce mileage by restricting air flow under the unit. They say that a hula skirt mud flap would be a better choice.
Two questions.
Has anyone changed from a solid mud flap to a hula skirt and seen a difference in mpg?
Since I'm not currently towing anything behind the RV do I need either one?

CKinsella is offline   Reply With Quote
Old 09-18-2015, 07:17 AM   #2
Senior Member
Seann45's Avatar
Join Date: Jun 2010
Location: Saskatoon Sask Canada
Posts: 10,024
You will not live long enough to get a payback on this.. the difference is so slight it can only be measured in a wind tunnel with high end equipment. You have to remember that magazines are out there to sell product so if they can get everyone to change over then their advertisers are happy.

2004 Chev Silverado Duramax optioned past the max. 2009 Jayco Eagle 308 RLS 765 watts of solar, 6-6 volt batteries (696 amp hour), 2000 watt (4000 surge) whole house inverter.
150days boondocking in 2018 206/17,215/2016, 211/2015, 196/14, 247/13, 193/12

Seann45 is offline   Reply With Quote
Old 09-18-2015, 07:23 PM   #3
Senior Member
hoppers4's Avatar
Join Date: Mar 2015
Location: Port Orchard
Posts: 1,409
Have to agree with Seann45. Gas mileage on these rigs is so poor to begin with that you'd never be able to tell the difference. Front end wind resistance (barn door effect here) is many times more than a mud flap could generate.

Without a toad you don't need a full width flap to keep debris away from the toad.
hoppers4 is offline   Reply With Quote
Old 09-19-2015, 06:46 AM   #4
Senior Member
Join Date: May 2015
Location: Dixon
Posts: 293
Thanks for both replies. You saved me some work and money.
CKinsella is offline   Reply With Quote
Old 09-24-2015, 06:34 AM   #5
Join Date: May 2015
Location: Dolores, Colorado
Posts: 76
I have a solid full width flap and can not tell any difference in fuel mileage. I have found that when not towing my toad the back of my Seneca stays much cleaner since installing the flap. I also noticed this on a previous RV.
Sam B
2014 Seneca TS
2017 Colorado ZR2
Sam is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

» Featured Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3

This website is not affiliated with or endorsed by Jacyo, Inc. or any of its affiliates. This is an independent, unofficial site.

All times are GMT -6. The time now is 03:17 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Copyright 2002-2016 Social Knowledge, LLC All Rights Reserved.