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Span? 16' is about max span for a 2x10 check the tables and the grade stamp on your joists. Some codes allow floor sheathing which is pretty thin and the deflection will vary with the cube of the...

I'm voting for taper lock split bushings and matching hub. You may not need the key depending upon the torque applied. They hold really well.

The indexer jboggs mentions is a good idea. Also investigate shot pins to position. The name Ferguson drive comes to mind as well.

Why do they have to be on a turn table? Or why can't they be moved in a straight line? How accurate do they have to be for measurement?

likely done as a stamping.

Did you look at drawn over mandrel tubing? (D.O.M.)

Your rotary engine becomes a stationary engine. The rotor must rotate to maintain the tips of the rotor in contact with the case as it the eccentric moves on the output shaft. The gears maintain...

If you are concerned about undercuts and using involute profiles, look into long and short addendums.

The term spur gear usually refers to a straight (parallel to the axis of rotation) cut gear regardless of tooth geometry. This differentiates them from helical gears which have teeth cut at an angle...

There are lots of old wooden boats scrapped for being rotted. My cheap self would look for something to salvage. However, the tiller has one big advantage in that you can control the throttle and...

Jboggs is correct, the electromagnetic clutch in the gearbox is unusual.

The first step in your redesign is to move the clutch to the input shaft on the exterior of the gearbox. The input shaft...

Following up on Kelly's idea, look at overrun clutches and one way clutches.

Your description is vague and the best engineering design cannot be made without a complete review of the design elements in your installation. So this cannot be a recommendation.

However,...

Do not worry at all. You will face disappointments in life magnitudes greater and still be a winner. Lots of ways to become a better job candidate:

Walk into a local machine shop with safety...

search: Tilt-a-Whirl

An increase in the outside diameter of the axle is the fastest route to increased stiffness.

If practical, I suggest that you put a length of 1" PVC over the 1/2" and use a reducer at each end to...

I don't know what your formula is intended to calculate.

I calculated the total shear force on the bolts and pins based on your 55 ft-lbs.

That force is in lbs force. I then calculated the...

55 ft-lbs is 660 in-lbs and acts on 5/16” pins at a 1.21” radius. The shear force on the pins is 660/1.21 = 546 lbs.


The shear area of the 5/16” diameter pin is .0767 in^2

If...

Not my field but the amateur radio people who experiment with transmissions in the microwave bands get pretty inventive with antenna construction. You might check out some of the things in that...

Free cad and free cad fem module. Your comfort level with the tutorials will give you the ability to refine the time estimate a bit.

And you think the print is unclear?

You need help with the equations?

Moment from arm = 100 kg x 650 mm = 65000 kg mm

(22.5 mm x Force on bottom bolts) + (152.5 mm x Force on top bolts) = 65000 kg mm in the opposite...

A ball park method:

You have a moment on the beam that is transferred to the plate. Presumably you know the distance from the bolt holes to the bottom edge of the plate.

I would calculate...

You have not presented a clear picture of the problem or exactly how your equation came to be. We went from casting a cylinder to a rectangular tube of unknown dimensions and we added a speed but...

To convert rpm to radians per second, multiply by .10472
The obtain centrifugal force you need to square the rotating speed so to convert to rpm^2 use .10472^2 or .010966
You also need to convert...