By far, the most common trailer suspension is leaf springs. They’re cheap, straightforward, easy to repair and a bunch of other things. That said, there are definitely benefits in other suspension styles, too. Torsion is the 2nd most common
Articles – From the Mechanic
Join the discussion with the Mechanic on all sorts of DIY Project topics, including news, tips and about building things. DIY is our specialty. Enjoy the articles, then comment when things catch your attention. To filter the posts, just select a category from the top line. If there is a topic you'd like to see, please request it. This site is for you.The Concept of “Strong Enough”
I’m not sure how to categorize this Article. It’s an answer, but more than that. We get questions once in a while something like “My trailer is X long and I want to haul a Y. Is 3 inch angle iron strong enough?”
Can I Use An Axle-Less Suspension
Axle-Less trailers. Yes, that’s a thing, and we get a lot of questions about this unique suspension. Some people ask if it’s any good? Other’s ask if it will work with our trailers? Still others ask about using them for tandems? We even get questions about using it
Easy Gantry Crane Lift Conversion
The beauty of a gantry crane is the beam overhead, and the clear access for lifting things. To make them more useful, telescoping legs put the top beam at a height appropriate for the job — in your garage, or outside, or wherever. One of the challenges
Tilt Top Trailer Conversion Plans
It’s time to welcome the tilt top trailer. You, as customers and readers, request this a lot, for a while. So, now we have it. Rather than revisiting the design for all our trailers in all the sizes, we now offer conversion plans. These are an added option
Are Your Trailer Plans Certified?
This is a great question we get a lot, in many variations. Are your plans DOT approved? Are the plans Stamped? We think it’s great to know the level of plans you get when you buy, so asking about certified plans is a great place to start. However, this question
Trailer Suspension Equalizer Link Action
There are many different sizes and shapes of the suspension equalizer link. What are they for? Better yet, when should I choose one shape over another?
If you’ve read much on this website, then you know
When Does My Trailer Need Brakes?
There are laws that say when a trailer must have brakes. In most places within the USA, when the trailer total capacity is over 3000 lbs, trailer brakes are required. That’s all well and good, but we all know that laws are an ignorant way of covering the least
Shop Tools – Super Tough DIY Utility Cart
When there’s a need that doesn’t really fit with existing products, make your own. That’s it with this new, tough Shop Floor & Utility Cart. While it’s not monumental in design, it does have some great functionality for DIY’ers, with strength that you won’t find elsewhere.
Trailer Hitch Class Ratings
As a convenient way to help with safety, trailer hitches, balls, and receivers have categories or load rating groups called classes. Each trailer hitch class has ratings for how much it will carry. A look at the ratings for each component
Small Trailer Instead Of A Truck?
That sounds like a good idea. Right? There are a million good reasons to need the capacity of a pickup truck, but actually, very few people use a Truck as a Truck that often. Can we get the function we need without all the weight and wasting fuel?
Trailer Sway – Video Review & Discussion
Understanding Trailer Dynamics like Sway is a really important. If you look for it, there are many articles and some great YouTube videos discussing and demonstrating the many factors and issues.
I-Beam Shape Choices: I, S, W, M or H?
When is an I-Beam not really an “I” Beam? While it’s common to use the generic term “I-Beam” for any beam with an I shape section, there are actually variations with different letter designations. And, there are advantages for the various shapes
Why No Plans For Aluminum Trailers?
This question comes up often — because there are not many good plans for aluminum trailers out there. We have great trailer plans, but none for aluminum. Why? As one of our Frequently Asked Questions, this one deserves a good answer.
How Often Should You Tighten Trailer Wheel Bolts?
A friend asked me this question, along with the companion of “How Tight?” The last thing we want is to lose a wheel — because it will not only delay our trip, but a wheel coming loose can do serious damage — to us, our stuff, or maybe
From Cheap Kit to Improved Trailer
You’ve seen them, the inexpensive bolt-together Harbor Freight trailer kits. While they pack a lot of function, they unfortunately are often something like a rattle trap. (Not always, of course.) While they have a cheap rap, they sell a lot
Bent Tongue — Judging A Weak Trailer
When buying a trailer, how can we decide if it’s well built, or just cheap? How do you know if it’s strong or weak? While there are always tale-tale signs, we’ll use this example of a trailer with a bent tongue to illustrate.
Who Says Welding Doesn’t Affect Strength?
I love seeing failures. Not that anyone wants things to fail, of course, we always try to make things that last. However, when a failure pops up, I love to look it over and understand the “how” and the “why”. It’s an excellent opportunity for learning, and I love to learn.
Engineering: Calculate Beam Loading (Intro)
As a simplistic introduction to beam loading, this article discusses the complications in calculating stresses and deflection. While it’s pretty easy to calculate beam loading for simple theoretical cases, very few beams
Why Special Order Axles?
Some Trailer Plans don’t use a standard axle size. Why not? Good question, along with the also common “Why should I special order the trailer axle?
There are a few common-ish axle sizes