4x8 ----> 5x10 ?

Ask questions about Harbor Freight trailers, or questions about building your own...

Postby Toytaco2 » Sat Jan 23, 2010 6:52 pm

Ditto on the baby moons questions. I gotta know!!:thumbsup: :thumbsup: :thumbsup:

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Postby jmcarey » Sun Jan 24, 2010 9:07 pm

It appears that most builders use a sub-frame under the floor. You could build your sub-frame to over hang the trailer frame. I would recommend half lap joints on the sub-frame. Run your 10' members on the bottom, and the five foot members on the top (half lap). This should make a frame sturdy enough to stand the test of time.
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Postby Rlowell » Tue Jan 26, 2010 12:52 am

The lap joint is a good idea. I will be using "pocket holes" on almost all my corner and cross member subfloor frame. My test joints seem to be real strong. :) Am just now starting my first build.
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Any tips to stretch a harbor freight 4x8 HD

Postby NWBeerKat » Wed Mar 10, 2010 3:19 pm

I just bought a 4x8 HD but I need a 6x10 1/2 (still not set on length or width). I was thinking since the 4x8 is really 2 4x4's It would be easiest to weld the extra length in the middle and redrill the axle bracket holes. Anyone have a link to page fore balencing a trailer?

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Postby mikeschn » Sat Mar 20, 2010 7:46 am

Tommy2tone_1999 wrote:Hey Mike,

Kaspersky Internet Security flagged the web address you gave as:

The requested object is INFECTED with the following viruses: HEUR:Trojan.Script.Iframer

Hope this helps.


I found the trojan and removed it. Should be good to go now!

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Postby Andymanout » Wed Mar 02, 2016 5:42 pm

Steve Cox I totally stole this picture for my cabin car on an HF 4 x 8. Thank you for posting this. I will be inverting the hitch bracket and doing the extended tongue trick on mine! Thanks again for the picture!

Steve_Cox wrote:
DMcCam wrote:What about building a 4 x 10 on a 4 x 8 trailer? Can it be done without a lot of reworking?


Not too much rework on this one. 2 of the cross members used in the sides to extend them and the axle moved back. Had to drill a few holes. Actual frame length 117", 2X4 on each end during the build brought the length to 10 feet.

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