Explorer Build - 5x9

Member designs created in Sketchup or other cad program

Explorer Build - 5x9

Postby Maranatha1911 » Sat Jun 30, 2018 4:16 am

Well, here goes nothing.
This is my first post, first design, first self built trailer - you get the idea.

Let me start off by saying - this forum is just absolutely amazing. Big thanks from Germany to all the wonderful people and for the information they're willing to share.

Our trailer will be our new adventure home base for the family upon returning to Colorado. We have 2 kiddos, 7 and almost born.
The objective is to build a trailer that lets us explore the wild places of the West. Anything off grid is right up our alley. Although we are not going to do crazy rock crawling, I don't mind the occasional mining pass across the Continental Divide or similar. With that in mind, I'm hoping to do something to the likes of Hikertrailer's off road version. Their current lead time is 17 months. Since I am blessed with a certain skillset in woodworking, cabinet making etc I thought to myself, why not build one?

Many details are not ironed out yet, like - exterior skin, aluminum, bed liner or FRP?
Galley kitchen is not entirely designed. Unsure if I'd want a ARB type fridge or just good old ice box.

There are some questions I have. Like, what axle system to use. Torsion half axles or Timbren?
Weight currently is about 1200# give or take. So with the offroading in mind, should I go 3500# or go 2000#

You see, plenty of things to clarify.

If you have comments, ideas or questions - feel free. I have learned a lot from this forum and would love to give back what I can.

Oh and, yes, I know, it's not really a teardrop. Just called it so for a lack of a better term. Help me with this one, would ya?

Cheers, Christoph
Attachments
Teardrop - exterior.jpg
Teardrop - exterior.jpg (51.53 KiB) Viewed 336 times
Teardrop - extruded.jpg
Teardrop - extruded.jpg (57.59 KiB) Viewed 336 times
Teardrop - extruded 2.jpg
Teardrop - extruded 2.jpg (75.15 KiB) Viewed 336 times
Last edited by Maranatha1911 on Tue Jul 03, 2018 1:37 am, edited 2 times in total.
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Re: Explorer Build - 5x9

Postby Maranatha1911 » Sat Jun 30, 2018 4:17 am

Here are a few more images.
Attachments
Teardrop - interior 2.jpg
Teardrop - interior 2.jpg (71.46 KiB) Viewed 335 times
Teardrop - interior.jpg
Teardrop - interior.jpg (77.91 KiB) Viewed 335 times
Teardrop - exterior 2.jpg
Teardrop - exterior 2.jpg (50.4 KiB) Viewed 335 times
Last edited by Maranatha1911 on Tue Jul 03, 2018 1:43 am, edited 1 time in total.
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Re: Explorer Build - 5x9

Postby Swan » Sun Jul 01, 2018 7:20 am

looks like a great build idea . you may need to scale down your pics size a little bit, hard to get a grasp for everything when you have to scroll L&R and U&D so much to see it all
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Re: Explorer Build - 5x9

Postby tony.latham » Mon Jul 02, 2018 8:36 pm

I think you should reconsider the lateral frame members. I believe they will be a problem when getting in and out.

A traditional teardrop works for many reasons. One is that you sit down in the door, on the mattress and swing in. It's the same getting out.

:thinking:

T
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Re: Explorer Build - 5x9

Postby Maranatha1911 » Tue Jul 03, 2018 1:34 am

Swan wrote:looks like a great build idea . you may need to scale down your pics size a little bit, hard to get a grasp for everything when you have to scroll L&R and U&D so much to see it all


Fixed that. Thanks for the tip. :D

tony.latham wrote:I think you should reconsider the lateral frame members. I believe they will be a problem when getting in and out.

A traditional teardrop works for many reasons. One is that you sit down in the door, on the mattress and swing in. It's the same getting out.

:thinking:

T


Good thinking. :thumbsup:
In reality they are not a structural part of the frame, rather an addon. Now that you mentioned it, there really is no good reason to have them there.
In the rear I was hoping to add a propane tank and maybe jerry cans. In the front I was adding them for symetry. The architect in me came through.
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Re: Explorer Build - 5x9

Postby Maranatha1911 » Wed Jul 18, 2018 10:36 am

Sideview.jpg
Sideview.jpg (39.52 KiB) Viewed 84 times


Here is a question in regards to weight distribution of the RTT and roof rack.

Should I aim to keep the RTT centered over the axle or move it forward towards the tongue?

My concern is trailer sway due to the weight on the back end with galley, fridge in galley and RTT.
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Re: Explorer Build - 5x9

Postby KCStudly » Fri Jul 20, 2018 11:01 am

If the camper by itself, loaded for travel, has good balance with proper tongue weight you might at first think that balancing the RTT over the axle makes sense.

Then I thought of wind loading. That thing is going to create a bit of drag, and with it being so far away from the axle centerline, it might actually develop a few (tens of?) pounds of torque tending to lighten the tongue.

You can use a wind pressure calculator (clicky) to get an idea of how much force will be applied to the RTT; and then do a leverage ratio comparing the distance from the center of area on the front of the closed tent to the axle hub center, to the ball hitch to get a rough idea of the magnitude. I'd be interested to see or do the math if you have the inputs (height x width of RTT frontal area, height above axle, distance from axle to hitch ball, expected cruising speed).
KC
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