Recent content by billycar

Final Design Stand Pipes using Black Iron Pipe Casters Tap Set in Pipe Caps TV Mount Shown in Portrait and Landscape Orientations

Finished project. (Background artwork removed) Enjoyed the path to arrive at a solution: rear mounting of Pipes and Poles, providing optimal stabilization, and more efficient use of Stand surface area for A/V equipment. I might now replace the PVC with metal pipe, and rest them on 2 swivel...

I think I'll try mounting the Pole Pipes to the back: 26 (-1.19) lbf > 24 (8.660) lbf > 20 (5.522) lbf. This design will also keep the top and shelf space for the Audio & Video components that would be lost due to my boring holes down into the cabinet ... although I liked the design idea of the...

Points of Clarification Needed Deciding Where to Locate the Pipe Mounts To place the CG of the Mount/TV/Poles over the CG Stand: Location of Center of Poles = CG Stand - (CG Mount/TV/Poles - Distance from Back of Mount to Center of Poles) ________________________= 10.2857 - (7.7635 - 3.0000)...

Thank You so very much for all your time and considerations.

Thank You. Looks like we responded at the same time. Any difference in your calculations, looking at the clarification of wheel location?

I divided the Stand into 2 equal sections, assigning 60 lbs to the back, and 45 lbs to the front. 1/2 way into the back block is 5.75 in and 1/2 way further into the front block is 17.25 inches from the back. ____Back_________Front __________________________ |___________ |_____________|...

The metal Poles finally arrived, and now I have accurate weights for them ... and I have also re-checked my weights for the other components (and now am using the correct scale of lbs). My scale has both lbs and kgms on it, and earlier, reading it upside down, I picked the larger numbers, which...

Well, I made another error ... the weight of the Stand is actually 45 lbs. I've added 2 more support layers to the top and bottom, and decided to weigh again. My apologies. I must have been trying to eyeball the scale, from an awkward angle, and read 90 (kg) and thought it was (lbs). After...

What is the function you are using to compute stability? Linear F1(xp) = m * xp + b? Where does it come from? Curious about it all. My poles should arrive next week some time, and I will be able to finish construction of my Stand, taking actual weights, and computing CG again. Probably won't...

Regarding the position of the 2 1/2" casters: they are of the ball bearing type, mounted on 3" x 4" metal plates, which are bolted to the base of the Stand ... actually, on the front ones, the center of the plate is 3.5" from the front, and after adding a 1/2" backing, the back ones are 4" from...

What if the 2 poles were on the back of the Stand, behind the wheels, resting on the floor? That would make the center of the poles ~5.5 in. behind the wheels (about 1+ in. from the back, since the wheels are located ~4.5 in. from the back surface towards the center). What type of stability...

Or would you still want to have the CG of the Poles/Mount/TV or Mount/TV, located between the casters? So, for my calculations for the Black Poles, have the CG of 7.251 in., measured in from a 0 point directly above the back caster. Comments welcomed.

I get ... (using Shipping Weights of the Poles): CG = {(4.75 in)x(36 lbs) + (10 15/16 in)x(49.8 lbs) + (3.0 in)x(21 lbs)} / (36 + 49.8 + 21) lbs = 7.291 in where 3.0 in and 21 lbs are for the Center and (Shipping) Weight of Chrome Poles For the Black Poles, the CG = 7.251 in. *****...

The Premier Mount poles I'm considering are 72 in. tall and 2 in. OD. They say the Shipping weight for Chrome ones are 21 lbs (for Black ones, 22 lbs): http://www.premiermounts.com/product.asp?partid=93 That's for 2 of them. My reinforced Stand now weighs ~ 90 lbs.