Description

One of our most popular trailers sizes.  This 5′ x 8′ – 3500# utility trailer has a Torsion Axle, yet it is just as tough and durable as it’s 5′ x 8′ Leaf Spring brother.  Functions and options are similar, as is the strength.  The size is popular because for many people it’s the perfect size.  These plans are designed with full Engineering for an excellent trailer.

Plans have easy to follow, illustrated step by step instructions, with a list of materials and needed components.  Then, there are options so you can build it the way you want it.  We always recommend building and customizing to meet your needs.

These plans give you the basics, then you add the options to meet your needs.  Images on this page, and in the accordions show many possible options, but not all.  Decking options, like planks or plywood, and even options in how to fasten it down.  Several sides options are also given, from the low rail sides that are very popular, to tall solid sides.

It’s all up to you.  Choose from the options in the plans, then add some of your own.

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We have alternate sizes — like 4×8 or 5×10 — if that works better.
If you prefer the leaf spring suspension on this 5×8, we have plans for that too.

Open “Alternate Sizes & Conversions” below to make this a Tilt Top Trailer.

Specifications

5′ x 8′ – 3500# – Torsion Axle Trailer Plans

• 5′ x 8′ is the Functional bed size (inside frame rails for 5′ cargo width).
• 3500 lbs. Total trailer capacity – with a Single, Torsion Axle.
• Welded steel frame design.
• Options for deck height range from 16 inches up.  (Deck height shown in the images is 20″.)
• Has design options for a building a Ramp, and Sides and More.  See the images for a peek at some of the options.
• Use the options to build it the way you want it.
• While trailer weight varies with options, the minimal flat bed is approx. 600 lbs.  Options drive weight up from there.  See the FAQ on trailer weight.
• Blueprints include a Motorcycle Rack design and lots of Tie-Down options.
• Complete Drawings and Illustrated Instructions — many pages of great information.

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More About The Design Features

Plans include easy to follow, illustrated instructions, with a parts list, and recommendations for materials and components.  Then, because it’s your trailer, we include many options for customizing.

Please see the images for several possible options in the plans.  Or, add your own!  We say build it the way you want it and make the trailer perfect for you.  A top, sides or tailgate — maybe a ramp, a tongue mounted toolbox, tie-down bars, or something unique.  Use these plans as a base, then customize it perfect.

5′ x 8′ – 3500# Torsion Axle Trailer Technical Information:

• True trailer bed size is 5 ft. 2″ wide by 8 ft. 3″ long — for a full usable 5′ x 8′ deck size, even with added sides.  We think the width of the cargo is a better measure than the actual width of the trailer.
• Overall length — including the tongue — is ~147 inches.  (Can vary with options.)
• Trailer bed height depends on design options including the torsion arm start angle.  It can range from 16 inches up.  (Bed height in these images is 20″.)
• Make even more ground clearance using spacer blocks between the frame and the axle.
• Max capacity (depending on options) is 5′ x 8′ – 3500# * including the trailer weight.
• True Torsion Axle Utility Trailer Design — Engineered for long life — even when fully loading the torsion axle.
• While the plans show the build steps, there is always more to learn. Check out the trailer and construction tips to get your trailer built.

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Alternate Sizes & Conversions

Not Quite The Perfect Trailer?  Check These Too.

• Same Size, Leaf Spring Axle – 5×8 – 3500 lbs Utility Trailer
• One size Narrower – 4×8 – 3500 lbs Torsion Axle Utility Trailer
• Or, a size Longer – 5×10 – 3500 lbs Torsion Axle Utility Trailer
• One Size Wider – 6×8 – 3500 lbs Utility Trailer

More trailer sizes and variations are available.  See All Trailer Plans.

Plans from Mechanical Elements are an awesome start to a great project.  Here are even more resources!

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