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Relocating Spare Tire & Storage Trunk Carrier

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Category: R-pod Discussion Forums
Forum Name: Podmods, Maintenance, Tips and Tricks
Forum Discription: Ask maintenance questions, share your podmods (modifications) and helpful tips
URL: http://www.rpod-owners.com/forum_posts.asp?TID=14567
Printed Date: 20 Jun 2025 at 11:30pm
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Topic: Relocating Spare Tire & Storage Trunk Carrier
Posted By: amesghali
Subject: Relocating Spare Tire & Storage Trunk Carrier
Date Posted: 18 Apr 2021 at 11:53pm

Hello everyone,

My next modification was Relocating Spare Tire and installing a Storage Trunk Carrier in the existing hitch receiver.

I removed the existing spare hardware and relocated the spare using the  https://www.amazon.com/gp/product/B00KPQYZ6O/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1 - BAL 28217 Hide-A-Spare Tire Storage Mount .  I installed a  https://www.amazon.com/gp/product/B00ISLA1WA/ref=ppx_yo_dt_b_asin_title_o09_s00?ie=UTF8&psc=1 - MaxxHaul 70355 1-1/4" to 2" Hitch Adapter with 4" Rise and 3-3/8" Drop  and a  https://www.amazon.com/gp/product/B00JF5LRN0/ref=ppx_yo_dt_b_asin_title_o05_s00?ie=UTF8&psc=1 - CURT 18153 60 x 24-Inch Basket Hitch Cargo Carrier .  I also found this 16 CU Ft   https://www.amazon.com/gp/product/B00KZ6GY9A/ref=ppx_yo_dt_b_asin_title_o08_s00?ie=UTF8&psc=1 - Buyers Products - 1712255 Black Poly All-Purpose Chest .  It fits perfectly in the carrier.  I drilled a couple of holes in the chest and carriage bolted it through the bottom of the carrier.

The large storage chest is great.  I have enough room for two small generators, one 5-gallon gas container and two 6-gallon water containers.  However, with the weight limitations of the original 1" receiver, I won't be putting the full water containers in there during travelling.  I need to find a solution to strengthen the 1" hitch somehow.

One note on the BAL spare tire system - it is a total royal pain to get the spare in and out of that thing.  I understand that's not a thing that I will be doing often, but I dread the first time that I will need to change a flat.. lol





















Big smile




Replies:
Posted By: jato
Date Posted: 19 Apr 2021 at 6:44am
I agree, a LOT of reinforcing will be necessary for this to adequately function w/o a nasty result as in a bent frame or cracked hitch and support members.  As you are likely aware, there will be a lot of bouncing going on and the 'cantilever effect' will take its toll unless major welding takes place to support all that weight.  There have been numerous members who have been successful in this venture however and the one that comes to the forefront is what Marwayne accomplished on his R-Pod. 

You can see it here:  Go to non-pod discussion, then mods, maintenance tips and tricks and then click on the topic that states "generator on rear cargo carrier."


-------------
God's pod
'11 model 177
'17 Ford F-150 4WD 3.5 Ecoboost
Jim and Diane by beautiful Torch Lake
"...and you will know the Truth and the Truth will set you free."


Posted By: Pod People
Date Posted: 19 Apr 2021 at 7:35am
We reinforced our hitch by adding a 2" receiver, an additional 2"x2" steel cross member, angle iron and use a hitch tightner on the shank. We use it for a bike rack.

here is the new 2" receiver added to the existing 1 1/4" receiver
https://postimg.cc/Y4Xh682C">

here you can see the new 2x2 cross member and the angle iron connecting the rear of the receiver to the new cross member
https://postimg.cc/V0XfVFwM">

here is the hitch tightner with the shank
https://postimg.cc/SJvdtcyT">

In addition, we also added an eyebolt at each end of the frame and connected cam straps from the frame(eye bolts) to the carrier.  This helps to eliminate any side to side or up/down motion. All of the welds were done professionally. I also added a second set of taillights about 30" above the stock units as the carrier blocks the original lights.
You are taking a risk by reinforcing the area and carrying a lot of weight that is cantilevered beyond the frame.and should consider the consequences.
Vann




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Vann & Laura 2015 RPod 179
https://postimg.cc/0zwKrfB9">


Posted By: offgrid
Date Posted: 19 Apr 2021 at 8:32am
Just to be clear, reinforcing the hitch area will not help protect the frame from bending. That will occur at the axle attachment points if it is going to.

I believe Marwayne reinforced his frame over it's full length as part of his mods.

There is a very good reason FR limits the load on that hitch, and extending it further from the axle at the same weight is just as bad as adding more weight.

-------------
1994 Chinook Concourse
1995 RV6A Experimental Aircraft
2015 Rpod 179 - sold


Posted By: Pod_Geek
Date Posted: 19 Apr 2021 at 9:26am
My naïve take looking at the photos is that this setup will work great in the driveway but I'm not so sure about what will happen when hitting bumps at 65 MPH.

Hey Pod People...what's with the flamingos?


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2020.5 R-Pod 195 Hood River
2018 RAM 2500 6.4L


Posted By: amesghali
Date Posted: 19 Apr 2021 at 12:47pm



Thanks for the great tips on reinforcing the hitch bar. 

At this time I don't intend to load that hitch more than 150 lbs.  I believe that weight will be safe.  

I don't understand what people mean by "the frame bending at axel attachment points".  The only thing that I can see that would bend or warp is the 1.25" hitch cross bar that is welded to the 2x4 main frame.  I can't see how loading up that hitch can bend any other frame components.

I'm a noob at this. As I take out this 2020 R-Pod on the road, I'm sure I will learn more.  I will post updates as they happen.  I'm hoping the learning experience will be peasant.  I hate learning from mistakes.  Big smile









Big smile



Posted By: lostagain
Date Posted: 19 Apr 2021 at 1:52pm
Think of your trailer as a teeter toter with the pivot point at the axle attachment.  I think that is what OG was referring to when he said that would be the point at which it would bend.  There is nothing between that pivot point and the end of the trailer cargo tray that supports weight from the ground up.  

-------------
Never leave footprints behind.
Fred & Maria Kearney
Sonoma 167RB
Our Pod 172
2019 Ford F-150 4x4 2.7 EcoBoost


Posted By: jato
Date Posted: 19 Apr 2021 at 3:24pm
+1 


-------------
God's pod
'11 model 177
'17 Ford F-150 4WD 3.5 Ecoboost
Jim and Diane by beautiful Torch Lake
"...and you will know the Truth and the Truth will set you free."


Posted By: StephenH
Date Posted: 19 Apr 2021 at 3:45pm
I think that trunk would be okay if you used it for a couple of lawn chairs and cushions. Anything beyond that is asking for trouble. The force of 150 lbs that far out gets multiplied. Hit a bump, and the whole thing is likely to be bouncing on the highway. Generators are too expensive to risk that way.

-------------
StephenH
Happy is the man that findeth wisdom,...

http://www.rpod-owners.com/forum_posts.asp?TID=7712 - ouR escaPOD mods
Former RPod 179
Current Cherokee Grey Wolf 24 JS


Posted By: offgrid
Date Posted: 19 Apr 2021 at 3:53pm
If you hit a bump or pot hole with the trailer wheels two forces will combine to put bending stress on the box tube frame rails. First is the g force from pushing the trailer up, that creates a stress on the frame where it is connected to the axle bending the frame downward as it tries to lift up everything loading the trailer behind the axle.

The second is the torque created by the torsion axle hitting it's stop as it gets pushed upward. That torque will try to twist the frame where the axle is attached. These two forces combine at the point where the rear of the axle attachment bracket is connected to the frame.

The more weight hung off the rear of the trailer and the farther out it's placed from the axle the worse the bending forces are. That's because the frame is a big lever or teeter totter as LA explained.

The tube frame is pretty thin in order to keep the trailer weight down, so the safety factor designed into the frame at that point to handle these loads is minimal, only around about about 2g's or a bit less. It's the weakest spot on the whole trailer, along with the axle itself, but that's a story for another day.

It's pretty easy to get a 2g load hitting a pot hole or bump. We've had one member report their frame bending at exactly that spot.

If I wanted to hang stuff off the back of the trailer (I don't because it reduces tongue weight which increases sway) I would strengthen the frame at the axle by adding a second 2x4 tube under the frame, and eliminating the axle riser. The second tube wouldn't have to be very long, a 4-5 ft piece centered on the scale would do it. That's because the bending forces fall off quickly fore and aft of the axle.

-------------
1994 Chinook Concourse
1995 RV6A Experimental Aircraft
2015 Rpod 179 - sold


Posted By: podwerkz
Date Posted: 19 Apr 2021 at 4:29pm
Dang. I hope you have good insurance.








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r・pod 171 gone but not forgotten!


Posted By: Colt
Date Posted: 19 Apr 2021 at 4:56pm
WOW!

Weigh the original spare and tire mount.  Measure the horizontal distance from the pin hole in the original hitch to the center of the tire.  Multiply that by the weight of the tire/mount assembly.  Then, divide that by the horizontal distance from the pin hole to the center of your hitch basket.  THAT is the safe weight limit of the hitch for a load in the basket.  I doubt it be as high as the weight of the basket alone.  That huge lever arm the basket has against the OEM hitch is like adding a pipe to a wrench to loosen a bolt.  Plus, a bouncing load can easily add 2x the force of a static load. 

That long lever arm is why the frame WILL bend at the axle if you do that often enough.  The stress flows in the frame to the axle where it is transferred to the ground.  The max bending stress is at the axle; that cheater bar thing again. 

Put your storage box inside the trailer over the axle.  Do not exceed the Gross Weight limit of the trailer or axle. 

I know this sounds harsh.  I hope it is about as harsh as the bouncing generators and gas cans will be when it lets go on the interstate.  This is not 1970s design engineering (there is no excess capacity).  With computers, that frame can be sized to within a very few percent of design loads.  You can be sure FR did so to get the trailer weight so low. 


-------------
John
'16 R-Pod 180


Posted By: offgrid
Date Posted: 19 Apr 2021 at 6:04pm
There are no mandatory design limits for the structural forces over the road vehicles are required to withstand. I've looked. Best I've seen are recommendations for heavy trucks that they should be able to at withstand forces in the range of 2.75 to 3 g's. Light vehicles like cars and pickups are tossed around more so have to be higher. The actual design limits used are company proprietary.

In contrast, I've run the numbers on the rpod frame and it's under 2g's at the axle. You can get light and cheap, or you can get strong and heavy, or you could probably design something fancy like a unibody trailer box and get strong and light, but it wouldn't be cheap. But you can't get all three. Rpods are light and cheap, don't for a moment assume they are strong. They aren't.

-------------
1994 Chinook Concourse
1995 RV6A Experimental Aircraft
2015 Rpod 179 - sold


Posted By: StephenH
Date Posted: 19 Apr 2021 at 6:20pm
Light  --  Cheap  --  Strong

Choose only two of the three. There is no alternative.


-------------
StephenH
Happy is the man that findeth wisdom,...

http://www.rpod-owners.com/forum_posts.asp?TID=7712 - ouR escaPOD mods
Former RPod 179
Current Cherokee Grey Wolf 24 JS


Posted By: Dirt Sifter
Date Posted: 20 Apr 2021 at 12:45pm
aimsghali, this isn't an ego thing, its a safety thing. It is a safe bet you NEED to listen to the good advice and reasons behind it posted by the experienced members of this forum. I am not new to towing, but don't have near the experience of those who have cautioned you, and I can see nothing but trouble from your set up. Best of luck.


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Greg n Deb 2020 195 HRE
'07 Tundra 5.7L., '17 Tacoma 3.5L. Both with tow packages
1 Puggle, 1 Chihuahua support staff



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