i am building this thing...

[edmontonsubbie]

...and this "thing" has a few attributes. First off, it needs to be capable of supporting 250 lb. in vertical suspension with a safety factor of....let's say 2. So, it needs to support 500 lb. of static load. That should accomodate the sub making sudden motions in fear, pain, or...whatever.

It's basically a roulette table with appropriate tiedown points built in...but, rather than revolving on the horizontal, it is designed to revolve on the vertical. This brings into question....wall strength. Will the wall rip out? My plan here is to spread the load over at least three studs on the back plate....that should take care of that.

Now...the stumper...for me at least. How to safely transfer that load to the wall? I have investigated a "lazy susan" type unit...and that makes sense as it consists of tightly packed bearings that can bear up to 1,000 lb...but...only in dead load. Not in torsional stress. Please understand that the last thing i want to see happen is for the bearing unit to fail and the poor sub to come flying off the wall, completely immobilized, and landing flat on his/her face. That would not be cool in the slightest.

I have purchased a heavy duty castor...i have stripped out the wheel...designed a support frame. I have the rotating unit finished....first coat of paint applied...and i will test it. I will mount it...pull on it....work it to failure. If i can make it fail, i will seek a new design. I am thinking...a rod mounted to a thick flange...screwed to a plate mounted to the studs...then a locking bearing on the rod...around which the unit rotates. In my mind, this makes the most sense. I have just not been able to locate it as yet.

I am no mechanical engineer....i usually zap myself when i work with electrics...and any plumbing i touch invariably leaks. Any design assistance or suggestions would be MOST appreciated.

kindest of kind regards,

eddie.

 

[Small pleasures]

Ask Velvet

Velvet Steele has something very similar installed in her place. If you send her a polite email asking for advice she'll probably help you.

 

[CalgaryJenn]

...and this "thing" has a few attributes. First off, it needs to be capable of supporting 250 lb. in vertical suspension with a safety factor of....let's say 2. So, it needs to support 500 lb. of static load. That should accomodate the sub making sudden motions in fear, pain, or...whatever.

It's basically a roulette table with appropriate tiedown points built in...but, rather than revolving on the horizontal, it is designed to revolve on the vertical. This brings into question....wall strength. Will the wall rip out? My plan here is to spread the load over at least three studs on the back plate....that should take care of that.

Now...the stumper...for me at least. How to safely transfer that load to the wall? I have investigated a "lazy susan" type unit...and that makes sense as it consists of tightly packed bearings that can bear up to 1,000 lb...but...only in dead load. Not in torsional stress. Please understand that the last thing i want to see happen is for the bearing unit to fail and the poor sub to come flying off the wall, completely immobilized, and landing flat on his/her face. That would not be cool in the slightest.

I have purchased a heavy duty castor...i have stripped out the wheel...designed a support frame. I have the rotating unit finished....first coat of paint applied...and i will test it. I will mount it...pull on it....work it to failure. If i can make it fail, i will seek a new design. I am thinking...a rod mounted to a thick flange...screwed to a plate mounted to the studs...then a locking bearing on the rod...around which the unit rotates. In my mind, this makes the most sense. I have just not been able to locate it as yet.

I am no mechanical engineer....i usually zap myself when i work with electrics...and any plumbing i touch invariably leaks. Any design assistance or suggestions would be MOST appreciated.

kindest of kind regards,

eddie.

YOU ROCK!
Consider mounting it from the ceiling as well as the wall. It should help ease some of the weight pulling outward from the wall.
Are you going to post some photos of it after?

 

[edmontonsubbie]

thank You Miss T. i shall make the email my "last resort" as it hardly seems appropriate to bother a Top with such as that. Then again, She may be proud of whomever constructed it...and will delight in the interest. There i go "assuming things" again. Mistress Pandora is unpleased with my ability to assume things....i am, obviously, working on that.

Shared successes and shared failures make the world a far better place. This much i know as core.

eddie.

 

[Small pleasures]

thank You Miss T. i shall make the email my "last resort" as it hardly seems appropriate to bother a Top with such as that. Then again, She may be proud of whomever constructed it...and will delight in the interest. There i go "assuming things" again. Mistress Pandora is unpleased with my ability to assume things....i am, obviously, working on that.

Shared successes and shared failures make the world a far better place. This much i know as core.

eddie.

I can't speak for her but I doubt she would mind giving you a bit of advice. She can speak with specific, direct experience with this very thing.

Whatever you do, make sure you do it right. The idea of a strapped down person falling face first off of a wall with the weight of the roulette wheel behind them makes even me cringe.

I had 2 handy guys and 1 paid professional handy man all work together to make sure everything in my place is safe. Do your due diligence.

 

[edmontonsubbie]

YOU ROCK!
Consider mounting it from the ceiling as well as the wall. It should help ease some of the weight pulling outward from the wall.
Are you going to post some photos of it after?

lol!!!!...no...You rock!...i loved that outsized font choice and i am appreciative.

Given a successful conclusion to the design and, most importantly, Mistress's permission...yes, pictures posted.

eddie.

 

[edmontonsubbie]

I can't speak for her but I doubt she would mind giving you a bit of advice. She can speak with specific, direct experience with this very thing.

Whatever you do, make sure you do it right. The idea of a strapped down person falling face first off of a wall with the weight of the roulette wheel behind them makes even me cringe.

I had 2 handy guys and 1 paid professional handy man all work together to make sure everything in my place is safe. Do your due diligence.

i will...and this is part of that diligence. i like those who admit when they don't know much about what they are embarking upon. i trust those who feel the same way. The world has enough...know it all's.

eddie.

 

[uncleg]

Sounds like an interesting contraption. If you are thinking of a rod through the center, you might want to let it protrude out front, with provision for attachments, i.e. butt plug. Four tie down points and a "hook" to hang on.

 

[DominaPandora]

If you are thinking of a rod through the center, you might want to let it protrude out front, with provision for attachments, i.e. butt plug.

Ummm...yum.

 

[uncleg]

Ummm...yum. [/QUOTE]


Oooohhh ! Evil Woman If eddie didn't enjoy it so much I'd just about feel sorry for him.

 

[PuntMeister]

IMHO the bottom of the wall attachment will act like a hinge whether you want it to or not, so the key is to secure the top. Maybe go with big ass mofo chains around the ceiling joists as well as more lag screws than you can shake a stick at. Wait a sec, that makes no sense at all, to be shaking a stick at lag screws. I'd be really bored or drunk to do that, so best dis-regard my advice.

 

[edmontonsubbie]

IMHO the bottom of the wall attachment will act like a hinge whether you want it to or not, so the key is to secure the top. Maybe go with big ass mofo chains around the ceiling joists as well as more lag screws than you can shake a stick at. Wait a sec, that makes no sense at all, to be shaking a stick at lag screws. I'd be really bored or drunk to do that, so best dis-regard my advice.

no, no, no Punt...it must spin! Think roulette wheel angled up 90 degrees to the vertical. Actually, i have been advised that it needs its own stand rather than being wallmounted.....it still doesn't solve the basic issue....but...i might be able to tilt it to a 70 degree angle rather than the full 90. That should take some of the heat off the lazy susan unit tending to shear.

i will shake a stir stick at the lag screws that i use to assemble the stand....just so that you don't get the "my advice is disregardable" syndrome. Otherwise known as "MAD".

Gawd, it's too early for this. i must focus and get this day done.

Have the most pleasant of days,

eddie.

 

[edmontonsubbie]

Ummm...yum.

Oooohhh ! Evil Woman If eddie didn't enjoy it so much I'd just about feel sorry for him. [/QUOTE]

This comment should not be interpreted as my having made a comment. On matters such as this, it is usually best to remain silent.

eddie.

 

[PuntMeister]

no, no, no Punt...it must spin! Think roulette wheel angled up 90 degrees to the vertical. Actually, i have been advised that it needs its own stand rather than being wallmounted.....it still doesn't solve the basic issue....but...i might be able to tilt it to a 70 degree angle rather than the full 90. That should take some of the heat off the lazy susan unit tending to shear.

i will shake a stir stick at the lag screws that i use to assemble the stand....just so that you don't get the "my advice is disregardable" syndrome. Otherwise known as "MAD".

Gawd, it's too early for this. i must focus and get this day done.

Have the most pleasant of days,

eddie.

Eddie, dude, it is the wall or stand or whatever it is mounted too that needs to be secured, not the spinny part. Of course you can't secure that. Yes, the axle portion will have shear loads but that is a simple matter of shaft diameter and material selection vs. load. Go with steel to reduce deflection. Now if you decide on a separate stand to mount lazy suzie too, then this stand or the wall mount will need to be able to handle the moment created by the shaft offset X the overhung load. That's where you could go with a big ass mounting plate to reduce the moment and then use conventional fasteners (such as lag screws with sufficiently stir-stick shaken-at treatment), or better yet get a couple of pillow-block bearings and mount these to some steel or hardwood beam section well secured to the wall beams with floor-to-ceiling vertical rigid supports.

Ah wattever, MAD this one.

-Punt.

 

[edmontonsubbie]

Eddie, dude, it is the wall or stand or whatever it is mounted too that needs to be secured, not the spinny part. Of course you can't secure that. Yes, the axle portion will have shear loads but that is a simple matter of shaft diameter and material selection vs. load. Go with steel to reduce deflection. Now if you decide on a separate stand to mount lazy suzie too, then this stand or the wall mount will need to be able to handle the moment created by the shaft offset X the overhung load. That's where you could go with a big ass mounting plate to reduce the moment and then use conventional fasteners (such as lag screws with sufficiently stir-stick shaken-at treatment), or better yet get a couple of pillow-block bearings and mount these to some steel or hardwood beam section well secured to the wall beams with floor-to-ceiling vertical rigid supports.

Ah wattever, MAD this one.

-Punt.

no no...no MAD on that one...sound advice and thank you for it. Nothing like over engineering a potentially dangerous piece of equipment. i shall "bless" the stir sticks, run some smudge pots, and sprinkle some water around the whole deal to ensure safety. Nothing like blind faith...*cough*

eddie.

 

[mick_eight]

If you go to Lee Valley.com They have the best hardware IMHO then can be found anywhere

 

[Rumply Pink]

It would help us to help you if we kew more about the wall you want to install it to.
If it is a stick-frame building (like a house or 4-story walk-up), you have a lot more to think about. Idealy you need a load bearing wall as it provide for better anchoring. You need to know if you have steel studs or 2x4 studs.

In this case steel studs would probably be bad. You would either have to build your "thing" with its own supports and only anchor it to the wall for stability.
Otherwise, get a drywall saw, cut the drywall out between two studs and double-up those two studs with 2x4,screwed into the stud and reaching from bottom to top plate (you might then decide to put backing between those two doubled-up studs to provide for future anchoring; lift the wheel of its axel, roll it away to expose D-rings for a variety of restraints). Cut your drywall edges with a knife and straight edge and you can now screw your replacement piece of drywall onto the new studs as tight as possible to the old drywall, tape, spackle, sand and paint.....

If there was conrete behind that wall, you could get a hammer drill (rent one from home depot or wherever) put in an anchor into the concrete that can accept a bolt or length of redi-rod, around 1" diameter. Go no deeper than 4" into the conrete and be sure that there's no plumbing or electrical conduit before drilling. You just drill through the drywall, stop the drill when you touch concrete and mark where the drywall is on the bit, measure back 4" and use masking/electrical tape as your depth gauge. You could get away with minimal damage to the drywall.
Best to make a starter hole in the drywall with a regular drill to get some plywood or melamine, cut it to span the studs with a hole drilled for the bolt/redi-rod, this way the hammer drill, which can be initially messy until it bites and creates a hole, or if the rod or bolt flexes, it won't mess up more drywall and maybe ad just a little more support.

Ultimately, it may be easier to build your Wheel of Doom/Karma (or was it Price is Right you were planning on playing?) free-standing. Get a welder to build the frame...

 

[edmontonsubbie]

Hey Rumply....thanks for your very considered advice. Obviously, you understand your moments...errrr...of inertia.

i am, in fact, building this thing onto a free stand. Being a wood guy, i will use 4x4 posts and lag bolts to assemble that. The beauty of the free standing unit is that not only can rotation take place, but the angle can be adjusted from either flat to approximately 70 degrees. It will be, hopefully, an engineering marvel that future generations will dig up and attach various hypotheses as to it's purpose....or not.

Either way, it's a labour of slavery.

kindest of kind regards, thanks for the advice, and welcome to perbville.

eddie.

 

[Rumply Pink]

Well, I actually work in construction in a position that requires me to know a little bit about everyone's job, so I enjoyed the problem it presents.

Obviously I would want to build something that could provide for a greater number of possibilities and it sounds like you've made a good choice.

Ah, the lengths one has to go to, to get things done (to one's self), the way one wants them done...

 

[edmontonsubbie]

Well, I actually work in construction in a position that requires me to know a little bit about everyone's job, so I enjoyed the problem it presents.

Obviously I would want to build something that could provide for a greater number of possibilities and it sounds like you've made a good choice.

Ah, the lengths one has to go to, to get things done (to one's self), the way one wants them done...

ah yes...life can be so complicated that way. Fortunately, this is not really my design nor idea....so, it will be interesting to see what She does with the final product. my only worry on this will be to make it safe, make it effective, and make it versatile. Easy peasy lemon squeezie....(he says as he falls flat on his face).

i have fallen into a slow funk over building it as i am trying to catch up on jobs while the weather is good. i have it 1/2 built...and i can see where it will work like a charm...but....it's that last "push" to get it done that remains to be seen. Perhaps i will get a rain day soon.

To be fair to myself, i have had external events influence and distract me. Anybody know where to buy bendable stainless steel rod about...1/8" thick?

eddie.