Geometry lesson??

[Steve Frederick]

I'm trying to remember how to lay out something!
Here goes!
I want the rails of my frame to be 58" overall width.
I want to notch and bend the tongue (part of the rails) to meet at a 50-degree A-frame hitch..
I'm thinking 25-degrees, or 12.5-degrees on each side of the notch?? While we're at it, how long from the angle to the hitch??
My brain!!...Got a new job, more responsibility, managing millions$$ in projects! Less gray matter left at the end of the day!! Boss says "Check's in the mail" At least I have a job (the real one) for a while...2-years work sold ahead!!

[Bob Olszewski]

Is this what you need?

[Steve Frederick]

Is this what you need?

Yup! Thanks! Can you dimension the length of the tongue? (the hypotenuse)

P.S. How's the build coming??

[angib]

68.6"

which is 29"/(sin 25).

Andrew

[Dean in Eureka, CA]

I think you could also find out the length of each tounge rail by using axa + bxb = c squared. (a= .5 frame width, b= overall tounge length and c= tounge rail)
I think that formula is called the hypotenuse of a right triangle.
(Been a long time since taking any math classes)

68.619" or just shy of 68 5/8"

[rbeemer]

Dean is correct also

Pythagorean Theorem = hypotenus of a right triangle is equal to the sum of the squares of its sides a2 + b2 = c2

[Steve Frederick]

Thanks all!
Sparks will fly this long weekend!
I hope to have a frame by Sunday!

[steve wolverton]

Pythagorean Theorem = hypotenus of a right triangle is equal to the sum of the squares of its sides

Pie R Round / Cornbread R Square?

/not a math major

[mikeschn]

With Solidworks, or equivalent, who needs to know any math?


Mike...

[bledsoe3]

After all that math I'm glad I went with a straight tongue.

[Bob Olszewski]

Seems everyone beat me to the punch!
But here's the updated sketch to chech everyones work.


Steve: Finished the sides and front locker dividers complete with spar notches cut, stain and spar urethane applied. Front locker face frames made. Oak planed to thickness and ripped to width for all the rest of the cabinets.
I'm going to make my own mold and make fiberglass fenders. I have the material for the molds and the patterns drawn of the sections as I described at Tolland. We'll see how that goes.

[Steve Frederick]

Aren't we all...except me...smart??

[rbeemer]

Steve, we are all smart in our own way. If you asked me what welder setting I would use on an arc welder for doing a trailer frame, I would answer you with the "deer in the headlights" look Not saying that I probably won't look like that when I have to do any electrical wiring. Is such a thing as "spaghetti" wiring like there is for software coding.

[Melvin]

With Solidworks, or equivalent, who needs to know any math?

I've almost always got AutoCAD running on my work machine. Last week I used it to find the area of a sheet of plywood ! Not that I was uncapable of multiplying 8 by 4. I just had the tool available and out popped the answer before I proccessed the question enough to realise I could do the math in my head.