ATC Panther build thread

chopyourown

Advanced Member
Joined
Aug 7, 2023
Posts
48
Location
Washington
I figured I'd put together a little build thread on our ATC Panther shell, both to spark discussion (and bring up things I haven't considered), to document for myself in the future, and to help others that may be considering a similar build out.

Apologies this is so long-winded. Hope you all get something useful out of this, and I welcome your thoughts!

Background and mission statement:

I've been camping and exploring the west in one way or another for as long as I can remember. I've slept in tents and hammocks, under tarps and overturned rafts, curled up in the back seat of a Honda Civic, and many, many nights in the bed of a pickup. Camping has always been a part of life for our kiddos too - we took my oldest on his first overnight at just a month old. Once we had our second, we decided it was time to upgrade from the trusty pickup topper we'd used for years - just not enough space for all four of us, and the midsize truck bed was overfull with kid gear and baby gear, not to mention adventure gear.

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In late 2023 I bought an old Roamin' Chariot for $800 from this site (thanks Shap!) and put it on my 2003 Ram 2500. Did a little build out and repair work, then a 3000 mile road trip to visit southern Utah. The Roamin’ Chariot worked great and provided proof of concept – truck campers are awesome. After that first big trip, we used it for another year of local overnights, and as a base camp for ski and mountain bike day trips. We learned a lot along the way too – how to build a camper electrical system, install a diesel heater, repair a roof, and ultimately what we want – and don’t want – in a camper. Unfortunately, we knew from the beginning that it was going to be too small – the wedge didn’t provide the space for a growing family, and it was hard to haul all the gear we needed for our favorite sports. We needed a camper that would better fit the truck, better fit the family, and make the most of the space we had available. The Chariot was sold on to another family, and we dove deep into the search for the new camper.

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I looked for a used camper for more than a year and nearly pulled the trigger a couple of times on a used Hawk, but ultimately I'm pretty picky and knew I'd just be happier building out my own to be exactly what we wanted.

To that end, the mission requirements for our new camper looked like this:

Go anywhere the truck can go (light weight a bonus!)
Space inside for sleeping 4 people in comfort
Minimal extra stuff - mostly want storage space for camp gear and adventure gear
Power, water, and fuel to easily stay out for a week at a time.

The ATC Panther really appealed to me for the extra width (I'm 6'4"), and the simple design ethos. Seeing long-term use from folks here on WTW helped seal the deal - I want to still be using this camper 10 years down the road. We finally placed an order in March of this year for a Panther shell. I wanted to keep it pretty minimal, but did request a king size bed, a roof fan, some exterior lights, and extra-tall fabric panels. I had ATC leave out the standard wiring and the outdoor carpet, since I knew I'd be doing a build. The only thing left to do was wait... oh, and order a bunch of goodies for the build!

Part II is next.
 
Delivery and the honeymoon phase

After 10 long weeks of waiting and planning, Marty delivered my new Panther to Washington. I paid a very reasonable fee and saved a bunch of money on gas and a couple days of vacation. I was pretty impressed with the initial fit and finish - the interior looked nice in person in a way that doesn't always show in the pictures online, and my custom requests were all done well. Install went super smooth - it's clear Marty has installed more than a few of these campers.

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Brand new camper ready to be installed

Once we had the camper on the truck, we decided to use it as a shell for a few months. We didn't want to miss any of our spectacular Washington summer doing a build, and partly we wanted to spend some time getting to know the camper, figure out how we used it, and adjust our build plan as needed. I built a hasty lower bed platform, strapped in a battery and a water jug, and we wasted no time getting out there.

We ended up spending 12 nights in the camper over the summer, including beach camping with friends, visiting some of our favorite mountain bike spots, and just enjoying time as a family.
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Dispersed camping in the Cascades


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Always time to relax in a hammock
 
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Now this will be fun! Our only mission statement is try to stay alive as long as possible. Your deliberate pace, thoughtful approach to design, and enthusiasm comes through. I believe we saw your Panther in production down at All Terrain Campers. Congratulations and more, yes we want more!

Thanks for sharing your build and adventures. :)
 
Initial build-out

After a summer of enjoying the camper, it's time to tackle the initial build.

Here's how the camper looked from the factory. I had requested a small storage cubby in the driver left side, but everything is pretty standard. This cubby has an access door from the outside - I was initially thinking I'd install my heater here, but now I'm not sure - it may end up being the pantry space.
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The plan is to build a U-shaped dinette at the front of the camper, with flip-top benches that allow for storage underneath. Camper electric system will be located on one side, water storage and plumbing located on the other. A long bench down the passenger side will be storage for camp gear (chairs, hammocks, possibly a table. The driver side will have a fairly small cabinet/counter, which will house a diesel heater, and have storage for camp cookware and pantry items. A sink and space for a stove will be on top of the counter.

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Step 1. Christen the camper with some of Seattle's finest, and some favorite stickers. We like to add stickers from the fun places we visit. Bonus points if they're funny or punny. We found a good spot for the WtW decal - thanks GVWRLOL!


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Step 2. Front dinette cabinets and electrical system. I first needed to build a place to put the electrical system, then get the system installed so we could have lights and run the fridge.

The electrical system consists of the following:
2x 100ah LiFePo4 batteries, wired in parallel
30amp DC/DC charger, connected to truck with 4awg wire
190w solar panel w/ MPPT charger (I bought 2 panels... don't think I'll end up using the second one)
1500w inverter (intended to run an electric kettle, possibly induction cooking)
Blue Sea fuse block for 12v loads
Victron shunt and monitor

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I used 1/2" baltic birch plywood for the cabinet. I was able to get a pretty nice fit here - I'm still able to easily slide open the turnbuckle door and access the turnbuckles to check that they're snug. The electrical system came together nicely overall - I'm always surprised by how long it takes to fit, cut, and crimp these big gauge wires, but I'm lucky to have friends with good electrical tools and some know-how.

After using this system know for a couple of trips, I think it will work well for our needs, with the exception that I am not pleased with the batteries. I purchased LiTime batteries based on some favorable online reviews, and having not seen the documented issue on this site that they don't work well in parallel. Well, I can confirm they don't work well in parallel - it seems that one battery bears the system loads, and the other takes a while to kick on and support the first batter, at least according to my battery monitor and the deviations I'm seeing in midpoint voltage, measured at the positive terminal of the second battery. I'm contacting LiTime and hoping to either get them replaced with a single 200ah battery, or get a refund and go with a different supplier.

After getting the bulk of the electrical installed, I finished off the dinette cabinet with a folding lid, attached using a piano hinge. The drivers side of this cabinet will hold the water system. It's sized to fit 2x 7-gallon Reliance aquatainers. They're cheap, ubiquitous, easy to pull out for refilling or winterizing. For trips with lots of opportunity to refill we may just run one and utilize the extra storage space, but we'll want the full 14 gallons (and more) for desert trips. There's also room in this cabinet for the water pump plumbing.

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Step 3: Passenger side cabinet

I built a similar design cabinet as the dinette along the passenger side. In retrospect, I think 3/4" birch ply may have been a better choice for the lids, since they will often bear the weight of someone either sitting or standing on them. It will be an easy fix in the future if I decide to go that route. The 1/2" worked great for the cabinet bodies. This side cabinet gives a ton of space - we were able to fit 4 camp chairs, a Coleman stove, and our little outdoor door mat and still had plenty of space.

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Finally, I attached a little shelf to support the fridge in the back passenger corner. I pretty intentionally picked a certain sized fridge that would fit in this location (Iceco APL35). It's not huge, but offers dual-zone fridge/freezer option (popsicles go a long way toward placating grumpy kids), is lightweight, quiet, and reasonably space efficient. I'm not positive I'll keep it in this location, but it's working well for now. I like that I can get to it pretty easily without climbing in the camper, but it's still easily at hand when you're trying to cook inside. The intention is to leave the space under the fridge open to store a portapotty and other oft-needed items.

I slapped together a very hasty bed platform, and that's how it looks at the moment. Good enough for a 2-week trip to Utah, the Tetons, and Yellowstone (we just got back, TR coming soon).

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Next steps - build out driver side cabinet, install heater, sink, plumbing, and build dinette table.
 
Looks great. I think your approach to the build out is a good one.
I see Marty (ATC) has stuck with the storm flaps.Are they sown on?
I find them very useful,I made some PVC supports to keep them
open as sun/rain shades.
Looking forward to your continued posts.
Frank
 
Congrats on the new Panther! I’d love to see some interior photos!
Thank you! I posted a couple showing the shell before I started the build, and a couple more with the halfway built interior. If there's anything specific you'd like to see, let me know. It seems like ATC has made some fairly recent updates, including going with an off-white paneling for interior walls and lift panels (as opposed to the wood grain of the past). Recently I think they've also changed to a lighter-colored cabinet material, but that isn't reflected in my build.
 
Looks great. I think your approach to the build out is a good one.
I see Marty (ATC) has stuck with the storm flaps.Are they sown on?
I find them very useful,I made some PVC supports to keep them
open as sun/rain shades.
Looking forward to your continued posts.
Frank
I initially wasn't sure what to think of the storm flaps, but they're growing on me. The top 'flap' (~2" wide) is sown on, and the larger flap velcros into place underneath the top flap. On the tall truck they're a bit of a hassle to take on and off. I've mostly left them attached unless we're staying in one spot for multiple days. The good news is I haven't seen any leakage around the windows with them attached, despite some pretty heavy rain at times. I'll have to look into your PVC supports, I could see that being a nice idea. Part of the reason I leave them attached is not having a great place to store them once they're off.
 
I have had a lot of use with my PVC flap supports.
They make nice sun shades and if it's raining but not
real stormy I use them that way you can get some nice
air movement in the camper.
My flaps are sewn on. IMO they make a nice option and they do
their job to keep rain from getting through the window area.
Here is a photo of the flaps in the open position.
This was taken in 2011 at Denali NP Savage River CG just before I moved the camper to the Tundra.
Frank
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Hoping you see this. I just bought a 2019 Panther and am interested in these PVC awning/flap supports in your photo. Can these be installed after the fact? I really like this idea. Thx for posting the picture.
D
 

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