Dust Buggy

Honeywell switches on the ****ing brake pedal is some genius move.
Mil spec says it should be good for 40,000 cycles at half load, I think it will run at about 1/10 load. Not sure what the cycle count of a brake pedal is but I assume it’s pretty high.
I need to put some RTV over the terminals as they are live. Don’t want to burn a fuse if a tool arcs.
 
Decided on a trailer as I cant take the buggy anywhere without one.
Flat deck drive over fenders with ramps.
14K downrated to 10K.
1/8" treadplate deck
3"x6"x3/16" main rails
2-1/2"x1-1/2"x1/8" cross members
Ramp storage, adjustable ramp width for loading buggies, quads, and tractors.
Flat deck long enough to haul 20' sticks.

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Amen about anything you buy being junk and too expensive for what it is.

How wide is the deck going to end up? Any ideas on completed weight? What made you land on 3x6x.188" for the main rails? The weight of the tractor?

Also, what size tires? I'm running E range LT tires in 265/75R16s since trailer tires haven't faired well for me. Will probably bump up another size to more closely match the tow rig's tires since I don't love the idea of the trailer tires turning at significantly higher rpms than the truck.

I was contemplating 2x6x.120" for a custom build to keep the weight down along with building it using less tubing by triangulating it rather than the traditional ladder frames most trailers use....but I was just spitballing.

Is ladder frame actually the better design since it will flex and you need a certain amount of flex in the frame to keep it from cracking?

Sorry for all the newb questions....I clearly don't know what I don't know here.
 
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Amen about anything you buy being junk and too expensive for what it is.

How wide is the deck going to end up? Any ideas on completed weight? What made you land on 3x6x.188" for the main rails? The weight of the tractor?

Also, what size tires? I'm running E range LT tires in 265/75R16s since trailer tires haven't faired well for me. Will probably bump up another size to more closely match the tow rig's tires since I don't love the idea of the trailer tires turning at significantly higher rpms than the truck.

I was contemplating 2x6x.120" for a custom build to keep the weight down along with building it using less tubing by triangulating it rather than the traditional ladder frames most trailers use....but I was just spitballing.

Is ladder frame actually the better design since it will flex and you need a certain amount of flex in the frame to keep it from cracking?

Sorry for all the newb questions....I clearly don't know what I don't know here.
Tread plate is 48”x96” so deck width is 96”
3”x6”x3/16” because:
3” keeps the rail straight with all the welding
3” is what the hanger width is
6” because 4” seems to always get reinforced or double stacked
6” because 8” raises the deck higher
3/16” is already light in my opinion, 1/8” is fine for crossmembers to keep weight down.
The fenders and outside rails add to the beam strength

I think ladders are the easiest way to attach the deck. 24” centers so the sheets butt up on centerline of the tube.
The deck is a shear plate so the ladder can not move, doesn’t need triangulation.

If you are in wet and salty areas some would choose channel or box as if it leaks, it will rust from the inside out. Not the case for CA.
 
Whatever corrugated deck and formed channel Uhaul uses you can pretty reliably put minor bends in it with point loads, chain binders and a 6' pipe.

But 3/16 deck with alternating 3" and 4" channels every foot is unreasonably heavy for what you want to do.

You can thank me later. :laughing::flipoff2:
 
Whatever corrugated deck and formed channel Uhaul uses you can pretty reliably put minor bends in it with point loads, chain binders and a 6' pipe.

But 3/16 deck with alternating 3" and 4" channels every foot is unreasonably heavy for what you want to do.

You can thank me later. :laughing::flipoff2:

He's going to use 8 lug axles. The whole thing is unreasonably heavy for what he wants to do.
 
He's going to use 8 lug axles. The whole thing is unreasonably heavy for what he wants to do.
Really depends on the tractor/equipment. My dad has a Kubota SVL75 that's just shy of 9500 lbs. unloaded that I may be moving cross country....along with several smaller 48hp 4wd tractors. Same sort of deal if you ever think you may have to use your trailer to go get a broken down tow rig since the light 3/4T and up diesels are 8K empty.

If you're building a trailer from scratch, it makes sense to just get 8 lug and dual brakes if your 3/4 or 1T truck is running them as you can swap a fresh set of good tires between them and have warranty on the tires a lot longer than the typical 2 years for trailer tires (provided you're smart enough to run the same size tires/similar offsets on both, lol). Not to mention, 2 interchangeable spares (if close to stock size under the bed and one on the trailer).
 
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Tread plate is 48”x96” so deck width is 96”
3”x6”x3/16” because:
3” keeps the rail straight with all the welding
3” is what the hanger width is
6” because 4” seems to always get reinforced or double stacked
6” because 8” raises the deck higher
3/16” is already light in my opinion, 1/8” is fine for crossmembers to keep weight down.
The fenders and outside rails add to the beam strength

I think ladders are the easiest way to attach the deck. 24” centers so the sheets butt up on centerline of the tube.
The deck is a shear plate so the ladder can not move, doesn’t need triangulation.

If you are in wet and salty areas some would choose channel or box as if it leaks, it will rust from the inside out. Not the case for CA.
All that makes complete sense. I appreciate you answering the questions.

I spent probably a good month widening/reinforcing and putting 7K 8 lug dual brake axles under my old car hauler with an open center, so I understand where you're coming from. Definitely want a full deck this next time around. The original trailer was rated for like 7K (3500 lb 6 lug axles with trailer brakes only on one). Changed the springs for a little more capacity along with the axles... Mainly, I like it because it sits very low but still has good ground clearance for getting to remote camping spots. Not really sure the best way to design something like that without notching/jogging the frame to go up over the axles...but then you need removeable or strong fenders to drive over. Lots of variables depending on use.
 
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Tread plate is 48”x96” so deck width is 96”
3”x6”x3/16” because:
3” keeps the rail straight with all the welding
3” is what the hanger width is
6” because 4” seems to always get reinforced or double stacked
6” because 8” raises the deck higher
3/16” is already light in my opinion, 1/8” is fine for crossmembers to keep weight down.
The fenders and outside rails add to the beam strength

I think ladders are the easiest way to attach the deck. 24” centers so the sheets butt up on centerline of the tube.
The deck is a shear plate so the ladder can not move, doesn’t need triangulation.

If you are in wet and salty areas some would choose channel or box as if it leaks, it will rust from the inside out. Not the case for CA.
Even in CA, I hate all the trailers in our fleet made from box, which I think is only 2 now. It's 3x as difficult to repair when it inevitably gets messed up and there's really no benefit of box to channel here.

As a single member, box tube all the way. As part of a trailer deck, especially when you're capping it with 3/16" plate to make a diaphragm I would vote 6" channel all day even on the tongue. Web facing inwards so the crossmembers are easy to fit, no coping. I would also go torsion axles, but that's another $700/pc.

I've had the shop replacing the factory wiring with these over the years too, seems to solve all that scotch lock and and electric tape bad ground nonsense at a really reasonable cost. Deustch connectors and kapton are fun, spending the time on a trailer is not. Just cut the 7 way pigtail off and put a junction box at the nose of the trailer for the inevitable destruction of that connection and put the spare that comes with the box in the tool box.


 
The deck is only 1/8” thick and I would be afraid to go any thinner with 24” centers. Dropping a heavy bar could dent that.

Box for the main rails as the inner crossmembers weld the inside and the outer crossmembers weld to the outside and I don’t want to special cut all those crossmembers for channel.

7K axles because when you are off road it is super common to only have one spindle loaded per side.

Slipper springs because they don’t go over center and buckle like hangers.

Springs over torsion because again off-road the hanger beam self levels the load as best it can get. Torsion will overload a single spindle sooner. I first designed for torsion then switched after more research.

8 lug because it is a standard. A lot of trailers are 14K down rated to 10K so anyone can pull them. And most AG and construction trailers are all 8 lug around CA.

Here is a work trailer special built for fertilizer application 1010 gal. at up to 12lbs per gal. It has a pump head that bolts to the front area.
This trailer was designed from my buggy trailer with modified ribs for the tank instead of a deck. Otherwise they are fairly close. This one is 1/4” for the main rail instead 3/16” for the buggy.

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Brennan Metcalf built a trailer to haul his crawlers a while back with no suspension at all and I think he’s happy with it. I remember seeing the details on his instagram a while back
 
Brennan Metcalf built a trailer to haul his crawlers a while back with no suspension at all and I think he’s happy with it. I remember seeing the details on his instagram a while back
I think if you're gonna go one trick pony route it would be way cooler to design a subframe that clamps to the tubes of the buggy and holds a single torsion axle and another that clamps to the tubes up front and has a tongue and jack. If you already have the buggy modeled in CAD you can dial in the tongue weight just right. You could have the axle slide under at ride height and then only take the weight once you use the winch to suck down the front and rear. :smokin:
 
Pics are worth something so I dug some up for reference
Wonder how well the spindles will hold up over time. I can't tell if it's an 8 lug axle or not....pattern looks too small to be 8 but can't really tell from the pics.
 
All the poor farmers around here built single wheel tractor trailers like that with used semi spindles and tires to get a low deck. They are fine for pulling a tractor with a connected spray rig that ends up being a double. Low speed they are fine. Try going 55 with it unloaded and hit a pot hole and the thing will go airborn a couple feet. Most of those trailers are all cracked and rewelded and weigh more than an elephant. They also pull like crap, you feel every crack in the road and can’t wait to unhook that junk and drive away.
 
Pics are worth something so I dug some up for reference
Honestly that's kind of a disappointment. I was expecting something far lighter and far more specialized.

If you're gonna do something questionable like build an unsprung trailer then at least do it well. And if you're not gonna do it well do it cheap/easy/quick. And that trailer is none of those.
 
Honestly that's kind of a disappointment. I was expecting something far lighter and far more specialized.

If you're gonna do something questionable like build an unsprung trailer then at least do it well. And if you're not gonna do it well do it cheap/easy/quick. And that trailer is none of those.
"If ya can't do it right, do it fast."
 
Started on the trailer. Want to have it painted before the rain starts. Ahead of schedule so far. Tread plate sheets are oversized so I have to get them trimmed to true 48x96.
Sure is nice having a hoist to turn it over. At work with a forklift is a pain and takes forever.

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Love the start! You're going to use 3" slipper springs, right? What kind of end; the flat, radius, hook? Looking at the 3" online with a quick search....seems the Dexter brand ~30.5" 5 leaf 10K rated packs are twice the no-name ones. I can't imagine they are worth the extra money, but do you have an opinion on that?
 
6 leaf 4K Dexter is made in 🇨🇳 even though Dexter is normally a 🇺🇸 company.
All the springs are probably coming from 🇨🇳 or Dexter would have their own 🇺🇸 springs.
Work trailers run the same springs and haul mini excavators 7k plus another 3k in supplies off road every day and they hold up.

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6 leaf 4K Dexter is made in 🇨🇳 even though Dexter is normally a 🇺🇸 company.
All the springs are probably coming from 🇨🇳 or Dexter would have their own 🇺🇸 springs.
Work trailers run the same springs and haul mini excavators 7k plus another 3k in supplies off road every day and they hold up.
So you went Dexter 4K rated springs b/c you know they'll hold up to 10K? Not disputing your experience in the slightest, just making sure I understand what you're saying.

Looks like you're running a hook or maybe a radius end? What dictates which style is best for the application...the hanger?

Did you buy the equalizer/hanger set up?....b/c I priced one at like $583 at etrailer.com....and thought it was a lot for what was there.

Any good advice on best sites to source the parts (assuming you're doing it online and not buying from your local trailer supply place)?
 
So you went Dexter 4K rated springs b/c you know they'll hold up to 10K? Not disputing your experience in the slightest, just making sure I understand what you're saying.

Looks like you're running a hook or maybe a radius end? What dictates which style is best for the application...the hanger?

Did you buy the equalizer/hanger set up?....b/c I priced one at like $583 at etrailer.com....and thought it was a lot for what was there.

Any good advice on best sites to source the parts (assuming you're doing it online and not buying from your local trailer supply place)?
4K per spring , so 4Kx4QTY=16K
Eye front, slipper rear.
This is the equalizer.
I got a mix from local trailer suppliers.
Some of the online places are not much more than a discount at a local trailer supply. Just make sure shipping is included because it’s a lot of weight.
 
4K per spring , so 4Kx4QTY=16K
Eye front, slipper rear
I got a mix from local trailer suppliers.
Some of the online places are not much more than a discount at a local trailer supply. Just make sure shipping is included because it’s a lot of weight.
Gotcha. Seems like the online places I'm looking at aren't rating per spring....but maybe I'm not understanding how they're listed...which is pretty funny considering I swapped from a pair of 3500 lb axles and springs on my 7K rated car hauler, to two 7K lb axles and thought I was putting 5K springs each axle (for a total spring weight capacity of 10K) with the 14K lb total capacity axles (after reinforcing the whole structure and widening the deck). Who knows what I actually ended up with, lol.

As for the slipper rear...I just meant it looks like it curves (radius) but it might 'hook'. From what I've gathered, there are at least 4 ends for a slipper end; flat, radiused, hook or open eye (almost a horizontal J shape). I don't know when to use each kind or what the benefits are, so clearly I need to do more research and not clutter up your thread with questions, but I really appreciate what you've shared so far.
 
Buggy was outside for awhile while working on the trailer, got rained on by a random thunder storm with super cool thunder and lightning and a cat pissed on the driver seat and it was already covered in dust to begin with. So I washed it down regular garden hose pressure and noticed a rough idle once it was wet and running again. It was getting late and noticed a nice amber colored glow from underneath, thought to myself, I didn't use the amber rock lights, then noticed the glowing cat and muffler. I am pretty sure a glowing cat at idle means a stupid amount of unburned fuel is making its way to the cat. (Before you judge me for running a cat, I burn garbage CA fuel and could barely smell all the unburned fuel leaving the tail pipe, you will thank me if you are ever behind me on a trail.)
Anyone have a guess if it is a stuck fuel injector or maf sensor or IDFK.
FYI I am running can gas and fuel stabilizer to prevent fuel issues with mid term storage as it sits until the trailer is done.
 
Buggy was outside for awhile while working on the trailer, got rained on by a random thunder storm with super cool thunder and lightning and a cat pissed on the driver seat and it was already covered in dust to begin with. So I washed it down regular garden hose pressure and noticed a rough idle once it was wet and running again. It was getting late and noticed a nice amber colored glow from underneath, thought to myself, I didn't use the amber rock lights, then noticed the glowing cat and muffler. I am pretty sure a glowing cat at idle means a stupid amount of unburned fuel is making its way to the cat. (Before you judge me for running a cat, I burn garbage CA fuel and could barely smell all the unburned fuel leaving the tail pipe, you will thank me if you are ever behind me on a trail.)
Anyone have a guess if it is a stuck fuel injector or maf sensor or IDFK.
FYI I am running can gas and fuel stabilizer to prevent fuel issues with mid term storage as it sits until the trailer is done.
Start by pulling codes and watching fuel trims with a scanner.

Also, you need to get this thing tuned properly and delete the stupid MAF.
 
Plugged in a Snap On scanner and I got no codes. I can hear the stumbling, but only occasionally it showed a misfire. First misfires were 1 and 2. I suspected plug wires might be bad so I put on a new set. Ran better and only had one misfire on 5 otherwise no codes and everything looked within parameters.

Move onto cooling system.
At idle engine was at 231°
Pump output was around 225°
Rad inlet was around 205°
Rad outlet was around 105°
-20 hose both way
Revving engine from 800 to 2000 dropped engine temp to 220°
Any guesses if the thermostat is problem or not enough pump flow, might be one and the same.
Need info on freeze plug bypass for the truck pump.
 
Start by pulling codes and watching fuel trims with a scanner.

Also, you need to get this thing tuned properly and delete the stupid MAF.
Fuel trims were near 0 at idle, once revved up they moved around, highest number was 9 for a second
TF? was around 18 at idle.
MAF was within parameters per RPM
 
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