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Trailer Modifications... For a "Mystery" Tucker...

Blackfoot Tucker

Well-known member
GOLD Patron
It's the off season for snowcat activities and things seem a bit slow on the forum. I decided to share one of the current projects The Gorilla and I have been working on.

Before I bought my first Tucker I bought a used 18’ car hauler style trailer. One needed cribbing to get a Tucker’s tracks above the fenders. That system worked, but it was a bit hokey and loading/unloading could get sketchy. The ramps hooked into the back of the trailer and we would use some large wood blocks to help the tracks climb onto the cribbing. Sometimes it worked okay… and sometimes things started to go sideways. Sideways was never fun.

Some pics through the years.

2008, The first Tucker: 1980 1543. Note the overall condition of the trailer.

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2009: Tucker number two: 1979 1642 (This became the "Vail Cat”).

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2009: Tucker number three: 1980 1543 with long front tracks (This became Thundercat).

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2015: Tucker number four: 1980 1643 (This became CHUGSzilla). While the original paint was faded and scratched, the orange sure looks better than the hideous green it is now!

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When I bought the 1544 it came with a nice, long deckover trailer and that’s now the primary trailer for hauling Thundercat. But there is a new "mystery" Tucker on the horizon, and it too needs a trailer.

Back in January The Gorilla and I hauled a 10,000 gallon poly tank to Colorado on the same trip we picked up the ugly green snowcat for some modifications. When the tank was being unloaded, the crane’s winch cable snapped and the tank came crashing down on the fenders. Those fenders had many battle scars already, and the tank crash spelled their end.

Here’s the trailer with the tank being loaded on it (January 2025).

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Scott and I talked about making some replacement fenders from steel channel, which would be much, much stronger than the original fenders. That would be a significant improvement and very cost-effective, but that would still require the use of cribbing for the mystery Tucker. A fair amount of discussion... and we hatched a plan to convert the trailer into a flat, deckover style. Yes, I suppose one could say “Those knuckleheads, they never learn”.

Here it is just prior to modification. You can see the damaged fenders and some rotten deck boards. Note the rust and the wheels. But that trailer has provided 17 years of great service, and that’s after nine years with the original owner.

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Another pic. Note The Gorilla holding the acetylene torch. I can just picture him using The Evil Chadster's MUAHAHAHA phrase as he salivates at removing the fenders. But truthfully, he is amazingly precise with that torch.

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Turn Scott loose with an acetylene torch, and things come apart... fast. The fenders were gone in maybe 15 minutes, max. The trailer’s wood decking, which dates to the trailer’s manufacture in 1997, desperately needed replacing, so that was removed in pieces. Nothing surgical about it; long pry bars and some leverage blocks pretty much broke all the deck boards loose from the trailer. (The remnants were cut into short lengths for wood stove fuel.)

The trailer has two 5,000 pound torsion axles. Torsion axles have what I'll call a lever arm that attaches to the axle at roughly a 20º angle from horizontal. During manufacturing one could position the arm pointing down, for more ground clearance and a correspondingly higher trailer deck height, or position it angled up, for less ground clearance and a lower trailer deck height. They were positioned up on this trailer.

After a fair amount of kicking around the best way to modify the trailer, we decided on several changes to the axles. We wanted to shorten the axles to bring the tires closer to the trailer’s main frame. By flipping the axles upside down we could re-orient the torsion lever arm down and that would get us four inches of the height we needed. (The lever arms point to the rear so flipping the axles upside down also means turning them around when installing them.) The axles were cambered and flipping them upside down means they needed to be cambered the same amount in the opposite direction. When they were originally built they used a length of 3” square tube and bent the tube in a press. We cut several inches from the axle’s length in the middle, and Scott positioned a short length of 2 1/2” square tube inside the cut ends of the axles. They were moved into position and carefully checked for alignment while simultaneously positioning the axles at a slight angle to create 5/8” of camber. Then he welded the axles and the splice tube together. By using the splice tube he was able to get a full penetration weld for maximum strength.

I'm a welder “wanna be”, which means I possess limited skill. (I can picture Scott reading this “Limited? Try none!”) Scott would make the root pass and I was tasked with the cover pass. A good welder makes welds that are both strong and cosmetically appealing. Yeah, well mine aren’t so appealing, so I end up doing a fair bit of grinding. That provides an incentive to really try and make better welds.

As part of the axle mods we added a 12” long length of 10” rectangular tube to space the axles down from the frame. Due to shortening the axles, which moved their mounting plates inward, we had to add some brackets to the frame for that rectangular tube to weld to. We used 2” x 3” x 1/4” thick pieces of steel angle for the brackets.

Here’s a pic of an axle cut apart and shortened prior to re welding with opposite camber. Note the rust. Ugh.

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Here’s the trailer with the first axle modified and tack welded in position. Note: If you look toward the rear of the trailer you can see the trailer’s ramps stored perpendicularly between frame crossmembers.

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And with both axles modified and tack welded into position.

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The next step is to weld in a length of 4” channel on both sides to bridge the gap where the fenders were. Then the space occupied by the fenders will be filled in with pieces of steel diamond plate.
 
Nice. I should post the mods I'm doing to a 24K tilt-deck trailer I bought a few years ago. The things a beast. I've hauled way more than 24k on it and no I don't have a CDL. It's a "farm use" trailer.;)

I'm working on a winch setup for it when I have time. Which is the limiting factor to most of my projects.
 

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Nice. I should post the mods I'm doing to a 24K tilt-deck trailer I bought a few years ago. The things a beast. I've hauled way more than 24k on it and no I don't have a CDL. It's a "farm use" trailer.;)

I'm working on a winch setup for it when I have time. Which is the limiting factor to most of my projects.
That's a monster trailer with a 24K GVW rating!

Scott and I kicked around the idea of a winch, but thus far have resisted the temptation.
 
The outside frame of the trailer is made of 4” standard channel. “Standard” refers to its weight, as one can purchase channel in different strengths with correspondingly different weights. Channel is U-shaped, and in the case of the trailer they built it with the open side of the U facing out. Though we had shortened the axles a few inches, there wasn't sufficient clearance with the tires to simply weld in a piece of 4” channel in the same fashion to connect the existing channel. We kicked around a couple of ideas, but Scott’s suggestion again won the day. We would use the same 4” channel, except we’d put the open side of the U facing in. We would have to carve out some of the bottom leg of the channel for tire clearance, but we thought this was our best option. We also added a piece of channel between the main frame and the new section of outer frame for further strength, and for support of the steel diamond plate decking.

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With the brace added. (Note the ramps at the rear of the trailer.)

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The existing ramps are very heavy duty, and correspondingly very heavy weight-wise. They’re stored under the trailer cross-wise and they rest on pieces of angle welded to the trailer’s cross members. It’s a good system, but there are drawbacks. Before modification the trailer’s deck height was only 22”. That’s great for hauling cars, but it means to remove or install the ramps you are literally on your knees, and that’s not good when it’s wet, muddy or snowy. When you want to remove or re store the ramps you also must have enough room on the trailer’s sides to slide the ramps in or out.

Their weight makes removing them or sliding them back under the trailer for storage awkward. The ramps are 6’ long and the angle created by a 6’ ramp rising 22” is 17.9º; pretty gentle. But the trailer deck height is now 31” and six foot ramps would be quite steep. Of course longer ramps made from steel would be even heavier.

While we could make new, longer ramps from aluminum, one can also purchase pre-made ramps. Some Internet research found some 9’ long ramps on Amazon at a reasonable price. Doing the math a 9’ ramp with a 31” rise equals a 16.7º angle; even more gentle. However the maximum legal width of a non-oversized trailer is 8’6”, so we must carry the ramps differently. We'll make a new support framework and carry the ramps length-wise on the trailer. (Note: 8’ ramps were available, but were more expensive.)

Before fully welding the axles in their new position, Scott suggested loading the trailer to check for tire clearance with the yet to be installed diamond plate. He was concerned about having the axles only tacked in position with the stress of loading something heavy, so Scott put one forklift on each side in the back to support the trailer during the loading process. Then he drove the Ugly Green Snowcat up the ramps and onto the trailer.

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Clearance was marginally okay, but when you consider what would happen if one hit a good sized bump, as well as what would happen if all the weight were on only one axle, we decided more clearance was necessary. CHUGSzilla was unloaded and Scott cut the tack welds, repositioned the axles one inch lower, and finish welded the axle assemblies in their new position.

Diamond plate was then welded to the trailer where the fenders had originally been.

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We also removed the framework for carrying the existing ramps, which were four pieces of angle welded to the frame crossmembers. All the existing lights and wiring were also removed.
 
In our various projects, it seems we never stick to the original game plan. Once work starts, new ideas are tossed out and the dreaded “project creep” starts. Truthfully, I'm frequently the responsible party for adding a few more things. Well, this time it was none other than The Gorilla who has suggested one upgrade after another!

I was content with the hitch. “Nope, it’s too high for most vehicles" (my tow vehicles have been lifted a bit, so it's not a problem for me). So, we cut off the existing hitch and I bought a kit with a piece of drilled, bent steel channel and a ball hitch that can be mounted in the different positions. Because the front of the trailer is higher, he wanted to replace the tongue jack, so I ordered a new one. I had suggested mounting a lockable box to carry tie downs etc. I was thinking of a simple rectangular box mounted under the trailer on the side. Oh no, that didn’t pass muster with The Gorilla.

He wanted a triangularly shaped tongue box. (Okay, that’s doable, but he was just getting started.) He wanted to cut off the existing steel plate on the tongue, then add some 6” channel to raise the tongue box, add a new top plate, as well as some supports underneath, and mount the spare tire under the tongue. But the tire couldn’t be simply mounted. He wanted a spare tire winch setup similar to what comes on full sized pickups these days. So everything was ordered.

Scott believes the original trailer tongue structure was modified after the trailer was originally built. There are two lengths of rectangular steel tubing that form the tongue’s V-shape, and the modifications consisted of welding 4” steel channel to the outside of the rectangular tubing for added strength. Except they stopped the reinforcing channel short of the end. Why? Scott thought where the channel stopped was a weak point in the tongue, and so pieces of 4” channel were added to eliminate that weak point.

Here you can see the pieces of channel added to reinforce the tongue, as well as the new hitch setup.

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Here is the raised section of the tongue that will support the triangular tongue box and mostly conceal the spare tire. Note the frame crossmember has been slightly carved for spare tire clearance.

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And the mostly finished front of the trailer.

(A few years ago Scott was hired to remove a bunch of welded steel 1/4” plate from a small hydroelectric plant. Quite a number of the cut pieces were saved rather than scrapped, as they could be used in other projects. We used some of those scraps on the tongue modifications.

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This was supposed to be a relatively simple, fast and easy project; the operative phrase being “supposed to be”.

And to give credit (blame?) where it's due, when I told PP about the trailer, she suggested adding a "salt shield" at the front… so now we talking about adding that! (Isn't it nice to have such "helpful" friends?)

Once the ramps arrived we had to figure out a way to carry them under the trailer. The frame member at the rear of the trailer is another piece of 6” channel. We needed something lower than that to support the framework that will carry the ramps. We used Scott’s CAD system to draw some different modification ideas for the back of the trailer and decided on another piece of 6” channel, though we would orient it with the U-shape aimed forward and the flat side at the rear. We would cut the ends of the channel on a 45º angle and it would not span the full width of the trailer.

Here’s the rear of the trailer before any modifications. The new ramps are on top.

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Won't you have to add another axle set to carry all the added steel to keep the same cargo capacity? :)
CT,

I know part of your post is in jest, but it does raise a valid point. Yes, the weight of the trailer is deducted from the GVW rating, and we have definitely added some weight. However, the aluminum ramps, while appreciably longer, weigh substantially less than the heavy steel ramps they replaced.

While I tried to adequately describe the steel ramps and their usage, I think it’s fair to say no “normal" human being can move those ramps around and look graceful doing so. They’re heavy and they’re awkward.

Note: The reference to “normal” was to exclude both The Gorilla and The Evil Chadster (AKA: The Infamous WBJ1”). They are mutants.

And… the “Mystery Tucker” is quite a bit lighter than standard….

I hope you and Mrs. Cider Tom are having a great summer!
 
Surprised that you two opted for a hand crank jack instead of a snazzy push button electric one
DAVENET,

In more than a few ways, I'm an "old school" guy. (I expect The Infamous WBJ1 to pick up on that....)

The manual tongue jack takes some effort, but it will work battery, or no battery. When I bought the 1544, it came with a big tandem axle flatbed trailer equipped with one of those electric tongue jacks.... we replaced it with a manual tongue jack.

Sometimes, simple is good.
 
Once we had the new piece of channel cut, we realized the frame’s channel had the U aimed to the rear. How did we miss that? Uh oh... that won’t look great. Scott put his thinking cap on and suggested we box-in most of the frame’s channel to make the rear flat. We would weld that in position, weld the new length of channel below, and then cut a window in the newly modified rear trailer frame for access to the framework carrying the ramps. By waiting to cut the window until it was all welded together there would be less distortion.

Note: After writing “Scott put his thinking cap on”, a picture of the Hanna-Barbera cartoon character Magilla Gorilla popped into my head. Link: https://en.wikipedia.org/wiki/Magilla_Gorilla

The setup to carry the ramps would be a piece of 6" x 10 I-beam, and two lengths of 5” x 3” angle. Note: I-beam is specified by the height of the web and the number of pounds per foot of beam. Thus, a 6” x 10 would have a height of 6” and weigh 10 pounds per foot. The I-beam and lengths of angle would be notched to fit around the frame’s existing deck support cross members and welded to them. We’d make a hinged door to cover the ramp access window.

The new aluminum ramps are 15” wide and 3 1/4” high. The plan is to cover the top of the ramps with some rubber so the mystery Tucker’s steel grousers don’t chew up the aluminum during loading and unloading. We decided to allow 4” for the ramps within their support framework.

As I mentioned above, the 6” I-beam and 5” lengths of angle needed to be notched to fit around the trailer’s deck support crossmembers. Careful measurement and layout of where the notches need to be, should have resulted in the new frame members fitting well. Except, Scott was teaching me the finer points of using an acetylene torch. In a previous post I said he was amazingly precise. Well, he is… and I’m not. So, we had to spend some time with an angle grinder cleaning up my less-than-stellar attempts at notching with an acetylene torch. Readers to my posts may recall I often say “Scott is the brains and talent, and I’m the one with the bonehead ideas”. This is exactly what I’m talking about!

Once we had the fit adjusted to an acceptable degree, we used the shop’s bridge crane to hold the I-beam, and then the angles, in position for tack welding. Then some tweaks and final welding. He did some, and I did some. Sadly, it’s not hard to tell who did what. But if someone wants to inspect my weld quality (or lack thereof) they’ll need to crawl under the trailer to do so. ( Yeah, good luck with that.)

Here's the center I-beam supported by the bridge crane.

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The ramps fit well and the next step is to fabricate and install the access door for the ramps. They weren’t cheap, and nice aluminum ramps are a tempting target for thieves, so Scott suggested making the door lockable.

The installed I-beam and angles with the window.

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One ramp partially extended.

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Both ramps stowed.

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I should point out something The Gorilla mentioned. The ramp framework of the center I-beam and two side angles adds considerable strength and support to the trailer’s deck in the rear of the trailer. I think the rear frame crossmember and the next nine cross beams are all tied together, which spreads the load accordingly.

Now it’s on to the door….
 
When discussing ideas, working with The Gorilla can be frustrating. He had a rear door concept in his mind that was pretty well fleshed out. Okay, that’s a good thing, but getting the details was like pulling teeth. When he want’s to be frustrating… he is very good at it. Very! He claims to be (I’m not kidding) “Poor, white and innocent”. Uh Huh. That's Horse Hockey.

After playing at least “Twenty Questions”, I was able to order the hinges and the lockable rear door latch. If my understanding of the design, is correct I think it will be functional and cosmetically appealing.

Scott has a computerized plasma cutting table at his shop and it does a beautiful job of cutting objects precisely and cleanly to shape. He used that to cut the door from 1/4” steel plate.

I often write thread posts in draft form when I have some free time, and revise them just before posting. So... that lockable rear door latch I ordered… was a complete bust. It was way too big for the size of the door. Scott and I then probably spent a good 30 minutes each looking online at different latch options that would look okay and be functional. I just wanted something lockable, and he wanted something that was more robust. (We have different points of view; I’ve been fortunate (knock wood) in not having anything stolen recently, whereas copper thieves (probably meth-heads) have stolen some very expensive copper welding leads from Scott.)

Then I had what Jeremy Clarkson calls a “brain wave”. Why not cut a small hole in the door, weld part of a chain link to the I-beam and use a padlock through the exposed link? Whoa! Chalk one up for BFT. The guy with the bonehead ideas comes through… (for once).

With that plan we ensured the door would fit properly and then shimmed the door in place with the desired clearance on all sides. Then Scott welded the barrel hinges in position. We discussed different sizes of chain links and he used his acetylene torch to cut the slot in the door. (It came out better than I thought it would, and I did a little clean-up with a file.) After the link and I-beam were slightly modified, the chain link was welded in position.

The door installed with lock in place.

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Rear view of trailer.

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The next step was to cut holes in the trailer for new marker lights because the originals did not survive removal. I had purchased some similar surface mount lights but The Gorilla wanted recessed lights due to the rear ramp-access door. He had a legitimate point, so I returned the surface mount ones and bought flush mount style lights.

Here's The Gorilla with his acetylene torch. After getting the size close with the torch he used an angle grinder mounted stone to refine the size and shape.

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We’re pretty much done as far as the major modifications to the trailer. Now comes sandblasting and painting. Unfortunately, powder coating the trailer is not an option due to the rubber in the torsion axles. So it will be sandblasting and painting.

NEWS FLASH: The trailer will NOT be green!
 
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