Frame rail

rjcruz27 · Aug 6, 2020

What’s the diameter of a Bronco frame rail?

Rightpace · Aug 6, 2020

3" wide x 4" tall

rjcruz27 · Aug 6, 2020

Is that inner diameter. Trying to build this

Apogee · Aug 6, 2020

The front frame horns on my '77 measure 2.25" inside at the bottom, almost 2.50" inside at the top and about 4" vertically.

Broncobowsher · Aug 6, 2020

I recall 2x4 rectangular tube slides into the frame rail really good.

sprdv1 · Aug 6, 2020

rjcruz27 said:
Is that inner diameter. Trying to build this

Now there's an idea Love it

catfan · Aug 6, 2020

I would do bigger casters.

74 Bronco Billy · Aug 6, 2020

catfan said:
I would do bigger casters.

I have made them independently, and yes the 2 x 4 fits a little tight, but I completely agree, use bigger casters

;D

Bronco4x4 · Aug 7, 2020

Just an Fyi >> the term diameter is used relating to circular items and not a rectangular opening. The 2”x4” box steel does slide into the frame as mentioned. The rear frame does curve and will limit how far the steel tube can go in.

Apogee · Aug 9, 2020

FWIW, the inside radius of the frame limits the 2x4 tube that will slide into my '77 frame horns...I could tap a chunk of 2x4x3/16 into them, but 2x4x1/4 slid in somewhat readily due to the larger corner radii. I don't have a piece of 2x4x1/8 laying around, but I don't think it would fit without a big hammer/press/something, and then I'm not sure it would come out.

Frame rail

rjcruz27

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Rightpace

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rjcruz27

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Apogee

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Broncobowsher

Total hack

sprdv1

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74 Bronco Billy

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