Jayco RV Owners Forum
 


Reply
 
Thread Tools Display Modes
 
Old 09-01-2014, 07:41 PM   #1
Senior Member
 
Nighthawk 96's Avatar
 
Join Date: Apr 2011
Location: Columbia SC
Posts: 571
New Cap on Truck Bed

Put a new Leer 100R cap on my truck.

Pros: Ability to keep stuff secured in truck bed.
Big unexpected benefit, mileage towing trailer has increase from
an average of 8.5 mpg to 10.2 mpg. This is based on a 320 mile
round trip to Myrtle Beach and back.

Con: Added #240 to back of truck. I also put in a bed rug, which is
included with this weight.

Had not weighed in about a year. With this addition and more stuff in the trailer I have managed to get about #100 above my GVWR (#6900)

Also my Drive Axle weight has increased by a total of #600 and Trailer Axle decreased by #200. This has really surprised me! Need to get more weight on the Trailer Axle. Front Axle is still at the same weight and the hitched up weight is within #20 of the unhitched weight.

I am still more than #3000 under my GCVWR and #340 under the rear axle weight rating.

I think the rig is set up properly. Pulls well, no sway.

(Went by a Dodge Durango pulling a big toy hauler today. Trailer nose way down, front end of truck way up. Trailer had slight sway at 50 mph -- I wonder what forums he is not reading)

Always thought that Rustic Eagle was a little high on his 15 percent on the tongue for a TT but that's about where I am! Kudos to him.
__________________

__________________
2012 Toyota Tundra 5.7 Litre DoubleCab
6 speed, 4.30 Limited Slip, Tow Package
2013 Jayco White Hawk 27DSRL
2010 Jayco JayFlight 26BH sold
Yamaha EF2000is Generators (2)
1996 Honda CB750 Nighthawk
Nighthawk 96 is offline   Reply With Quote
Old 09-02-2014, 08:02 AM   #2
Senior Member
 
Seann45's Avatar
 
Join Date: Jun 2010
Location: Saskatoon Sask Canada
Posts: 9,701
Hmm I think you need to tighten the weight bars up a little more so you transfer more weight to the front truck axle.
__________________

__________________
Seann
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.
175 days boondocking in 2017
215/2016, 211/2015, 196/14, 247/13, 193/12

Seann45 is offline   Reply With Quote
Old 09-02-2014, 11:34 AM   #3
Senior Member
 
Nighthawk 96's Avatar
 
Join Date: Apr 2011
Location: Columbia SC
Posts: 571
The front axle has returned to its unloaded weight after hitching up. Transferring weight from one end of truck to the other won't make the truck lighter; I would still be about #100 over the GVWR. Got to get some weight out of the front of the trailer and shift it back behind trailer axles. That will shift weigh from the truck (lighter hitch weight) to the trailer. As I noted the trailer axles are about #200 less the previous weighing.

Purpose of the post was to note the increase in gas mileage and the weight penalty for adding a cap to a 1/2 ton truck.
__________________
2012 Toyota Tundra 5.7 Litre DoubleCab
6 speed, 4.30 Limited Slip, Tow Package
2013 Jayco White Hawk 27DSRL
2010 Jayco JayFlight 26BH sold
Yamaha EF2000is Generators (2)
1996 Honda CB750 Nighthawk
Nighthawk 96 is offline   Reply With Quote
Old 09-02-2014, 11:44 AM   #4
Senior Member
 
Join Date: Sep 2013
Location: South Texas
Posts: 4,190
Good info. I thought about adding a bed cap, but since I'm right at my max, that's not a possibility for me. However, I will likely add one to my next truck which will have PLENTY of excess capacity to accommodate anything I want to add!
__________________


2014 Jay Flight 28 BHBE
2015 RAM 2500 6.4L HEMI, Tradesman 4x4, 3.73
Blue Ox SwayPro (BXW 1503)

Upgraded from an REI internal frame backpack and a Eureka 1/2 dome tent!
Camper_bob is offline   Reply With Quote
Old 09-02-2014, 01:48 PM   #5
Senior Member
 
Join Date: Nov 2011
Location: Secret Cove
Posts: 10,468
I also noticed a mileage improvement with adding the cap over the pickup bed.
__________________
2010 Jayco Feather Sport 22'6" (sold)DrawTite,12,000 lbs. 2017 Jayco 212 QBW BAJA (bought)
2011 Ford F-150 XLT SCab 4x4 Tow Package
"If you can't be smart; be stubborn.". DG.
SecretCoveDave is offline   Reply With Quote
Old 09-02-2014, 01:52 PM   #6
Senior Member
 
Join Date: Sep 2013
Location: South Texas
Posts: 4,190
What about with a tonneau cover? My brother tows a small enclosed car hauler and says he can feel the difference with and without the cover in place.

I'm thinking of adding one to my truck so we have somewhere to put strollers and such, and am wondering if I might notice any other benefits...?
__________________


2014 Jay Flight 28 BHBE
2015 RAM 2500 6.4L HEMI, Tradesman 4x4, 3.73
Blue Ox SwayPro (BXW 1503)

Upgraded from an REI internal frame backpack and a Eureka 1/2 dome tent!
Camper_bob is offline   Reply With Quote
Old 09-02-2014, 02:36 PM   #7
Senior Member
 
Join Date: May 2014
Location: VA
Posts: 394
I tried a tonneau and returned it. We haul too much stuff to be limited to the height of the bed rails. I noticed no difference in gas milage with it. I recently added a topper (cap, shell which ever terminology you prefer) and noticed a decrease in mpg when not towing the camper. That could be from the racks I had installed for the canoe. I haven't checked it yet from this weekends trip pulling the camper.
__________________
2005 Dodge Ram 1500 Quad Cab 5.7 HEMI
2̶0̶1̶4̶ ̶J̶a̶y̶ ̶F̶e̶a̶t̶h̶e̶r̶ ̶X̶1̶9̶H̶
howie is offline   Reply With Quote
Old 09-02-2014, 02:44 PM   #8
Senior Member
 
Join Date: Dec 2012
Location: Southern Indiana
Posts: 1,354
Quote:
Originally Posted by Camper_bob View Post
What about with a tonneau cover? My brother tows a small enclosed car hauler and says he can feel the difference with and without the cover in place.

I'm thinking of adding one to my truck so we have somewhere to put strollers and such, and am wondering if I might notice any other benefits...?
Bob, I'm experiencing 3 to 5 % better fuel economy with my tonneau cover by basically eliminating tailgate drag. Mine is a tri-fold that can be removed or installed in 5 minutes. It's also nice to keep things dry in the bed. https://www.jaycoowners.com/forums/at...1&d=1409686998
Attached Thumbnails
001.jpg  
__________________
2012 Eagle 320 RLDS
2017 Ford F-250 6.2l
3.73 E-locker
TCNashville is offline   Reply With Quote
Old 09-02-2014, 02:48 PM   #9
Lost in the Woods
 
Join Date: Jun 2014
Location: Woodstock
Posts: 1,128
Quote:
Originally Posted by TCNASHVILLE View Post
Bob, I'm experiencing 3 to 5 % better fuel economy with my tonneau cover by basically eliminating tailgate drag.
not disagreeing with your calculations but I have never experienced an increase in economy.
With a 3-5 percent increase ,which is quite a bit, you would think manufactures would install them as standard equipment to lower their CAFE level. it would save them millions in penalties
nbhybrid is offline   Reply With Quote
Old 09-02-2014, 04:11 PM   #10
Member
 
Join Date: Aug 2013
Location: Boston area
Posts: 50
Having been researching pickups recently, I found that the Ram 1500 can be ordered with a High Fuel Efficiency package (HFE) which includes grill shutters and a bed tonneau cover to reduce drag and improve fuel economy by 1 MPG. Apparently the 2015 F150 will have a similar package to eek out an MPG or two to give it bragging rights.

John
__________________

__________________
John, Heidi, with Big Papi & Venus (Cocker Spaniels)
2015 X213
2012 Nissan Pathfinder SV 4X4
Hensley Cub WDH, Tekonsha Primus IQ
perfpix is offline   Reply With Quote
Reply

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


» Virginia State Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3

All times are GMT -6. The time now is 05:44 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Copyright 2002-2016 Social Knowledge, LLC All Rights Reserved.