FlashHole's M416 trailer Build

Adventure Copan

Adventurer
I've been putting a lot of though into it and I think for the latch, I am going to order a couple of these weld on slam latches. I think the style fits the trailer really well, and they should be rugged enough to handle abuse. Plus, I like the idea of being able to close the tailgate with one hand.

As for the lock, I think tabs and a padlock will have to do.

Edit....I guess it would help if I added the pic of the latch.
latch.jpg

Where are you getting that latch cause I may use it too.

-Daniel Kent

EDIT: Never mind I found it. Looking forward to how you incorporate them.
 
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Flashole

Adventurer
For the tailgate, are you planning on putting some sheet metal on the exterior to box it in and to clean up the look of the gate?

Sent from my Nexus 4


No, I've though about it, but think it might look silly to box it in just on the tailgate. I will clean it up though. I almost put all the framework on the inside of the bed, so the outside would look nice and clean, but I wanted to be able to use the tailgate as a table or a seat when it was open. Plus, I didn't want to take up the cargo space. I have a feeling that every inch of interior space will be important.


Where are you getting that latch cause I may use it too.

-Daniel Kent

EDIT: Never mind I found it. Looking forward to how you incorporate them.

That latch is made by Sierra Pacific and the only retail place to order them is through Fastenal for about $18 each. I did find a guy selling them on ebay for a little cheaper, but after shipping costs, it was just easier to have my local fastenal order them in. I couldn't find them any place else.

If you do decided to use these, be aware that there is a left hand and a right hand latch. Fastenal only show one on their website and has no place to order the other.


I will have another update later today. I solved a major problem yesterday, but in doing so, I created another minor dilemma that I haven't thought through yet.
 

Flashole

Adventurer
Ok, I didn't get a whole lot done yesterday, but what I did get accomplished was big. At least for me it's big:) I've been worried all along about losing strength in the tub after cutting out the tailgate.

Sure enough, the sides have bowed inward and closed my gaps at the top of the tailgate. I had perfect gaps when I first cut it out.
186.jpg


I really, really, really didn't want to do this, but it's time to put a brace in. I spread the tub back out by wedging in a 2x2 that I had laying around.
187.jpg


That opened my tailgate gaps back up, so I cut and welded in a permanent cross member. I couldn't decide where to weld the brace, so I finally put it where it is because I may weld in some a expanded metal across the top of it to make a shelf out of it. I figure that in a camping situation, the tailgate will likely be used as a table top or a place to put a small grill or something like that. A shelf above it would come in handy. At least that's how I'm rationalizing it to get over the fact that I had to put in a cross-member.
189.jpg


Now for the biggest problem to date. All along, I've been going back and forth as to whether or not I was going to put a lid on it. For camping, a lid is really nice to have, but as a utility trailer, a lid will likely be a hassle. A canvas top would be a good alternative. Plus, a lid will just add more expense. Another consideration is that I didn't weld in a floor drain when I replaced the floor. My thoughts were that it will have a tailgate and that when I wasn't using the trailer, I'd just park it with the bed tilted back to let the water drain out. Well, I ended up constructing the tailgate in such a way as to keep water out when driving in the rain. Unfortunately, that means that it will also keep water in.

After weighing all the pros and cons, I've decided to just go ahead with the lid. The lid itself will be fairly straight forward, but my biggest problem is that like the tub, the upper rails are just about as warped as they can be. The aren't just warped in and out, they are warped up and down.

It's a little hard to tell by these photos, but you can get a feel for just warped these rails are.
199.jpg

197.jpg


Well, how do you fit a square lid to a non-square trailer? After thinking a lot about it, I decided that it's not possible to do. I could beat the rails back in place, but there is no telling what collateral damage that would cause. So, I needed to figure out how to make the top of the trailer square. Since I really like the look of the squared off rails that the newer trailers have, I decided that some angle iron would do what I needed to do. I measured to find the widest spots both front to back and side to side and built a frame out of 1.5" angle iron to fit those measurements, making sure to keep it square. I was hoping all along that 1.5" would be enough to make up for warped rails.

Luckily for me, it fit nicely the first time and I can see what it's going to look like. It's going to make a huge difference both functionally and aesthetically. Definitely a good decision!!!
194.jpg

193.jpg
 

Kflash

Adventurer
The angle iron rail is exactly how I plan to start! Nice job! Looking forward to your progress - post lots of pictures.
 

Flashole

Adventurer
The angle iron rail is exactly how I plan to start! Nice job! Looking forward to your progress - post lots of pictures.

After squaring the rails with the angle iron, I honestly think that I would do it again, even if the original rails were perfectly straight. The clean and modern look just changes the whole feel of the trailer. At least in my opinion.
 

klb67

Observer
Suggestion on the cross brace if you are concerned about blocking access when the tailgate is down - leave the corner braces fixed but make the cross brace removable with a few pins or bolts. A u shaped cradle type bracket welded to the corner braces would allow the cross brace to rest on them and provide the lateral support you need.
 

Flashole

Adventurer
Suggestion on the cross brace if you are concerned about blocking access when the tailgate is down - leave the corner braces fixed but make the cross brace removable with a few pins or bolts. A u shaped cradle type bracket welded to the corner braces would allow the cross brace to rest on them and provide the lateral support you need.

Dang, that's a great idea! Wish I would have thought of that before I welded it solid. I'm putting that at the end of the to-do list. We'll see how I feel when I get there.
 

DonBeasley

Adventurer
If you look at mine, and several others that put lids on these old trailers, you will find that we did the same thing, angle iron around the top rail. They are never really square and this method allows it to be pretty square. Also makes a more solid foundation for hinges an latches. Looks great. Keep the pictures coming.
 
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Flashole

Adventurer
Couple updates today.

First, a little better look at just how warped the upper rails were/are. The angle iron frame is perfectly square.
203.jpg


This is a bit of a problem. Trying to figure out how to adequately secure the angle iron to the Tub so that it can support the weight of the lid. Plus, the gaps are just plain ugly.
200.jpg


While I was thinking on that, I decided to work on the tailgate latch.

Welded on the support for the latch.
209.jpg


Found a placement that I liked and welded it on.
212.jpg


Repeated on the other side.
215.jpg


Cut out some tabs and welded them on. They aren't real pretty, but they work great.
219.jpg



Now, back to the real problem. I really don't see any other option than to use more angle iron to fill the voids and give me something to weld to the tub. Found some laying around and tacked it up there. Looks good and once it's welded up, it should add strength.
228.jpg


I think I've been dragging out this little project because once I'm done with it, it's back to working body filler and I need to do a ton of grinding inside the tub. Plus, there's a ton of sanding and piddly detail type stuff. Not much fun from here on out. The end is in sight though, and that makes me:)
 

Flashole

Adventurer
I used a highlift to square my wall rails

Using a high lift is a good idea. In hind sight, straightening the rails should have been the first thing I did. But, once I cut the tailgate, there's just to much to go wrong after that. Like I said earlier, I'm making this up as I go along. ;)
 

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