Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work.

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  #1   Report Post  
Stu
 
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Default $100 Homebuilt Elevator Photos Uploaded - No hassle viewing

I tried several cites and I finally found a no hassle free cite.

If you are interested in seeing a really simple, fast, and SAFE single
story 8' lift elevator capable of lifting 300 pounds in 10 seconds, go
to:

http://community.webshots.com/script...bumID=96391689

Thanks for all of your suggestions and for your help.

BoyntonStu
  #2   Report Post  
jim rozen
 
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Default $100 Homebuilt Elevator Photos Uploaded - No hassle viewing

In article , Stu says...

http://community.webshots.com/script...bumID=96391689



Hmm. This is what shows up:

Error
A problem has been detected.
You do not appear to be the owner of this album.
Make sure you are logged in.

==================================================
please reply to:
JRR(zero) at yktvmv (dot) vnet (dot) ibm (dot) com
==================================================

  #3   Report Post  
Bob Engelhardt
 
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Default $100 Homebuilt Elevator Photos Uploaded - No hassle viewing

Stu wrote:
...
http://community.webshots.com/script...bumID=96391689

....

The site doesn't like this full URL. Try
http://community.webshots.com/, then search for user "boyntonstu".
  #4   Report Post  
Greg O
 
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Default $100 Homebuilt Elevator Photos Uploaded - No hassle viewing


"Bob Engelhardt" wrote in message
...
Stu wrote:
...

http://community.webshots.com/script...bumID=96391689
...

The site doesn't like this full URL. Try
http://community.webshots.com/, then search for user "boyntonstu".


no luck for me either!!
What happened to the metalworking dropbox??
GReg


  #5   Report Post  
AL
 
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Default $100 Homebuilt Elevator Photos Uploaded - No hassle viewing

Interesting. But what do you carry on it? A person?

"Stu" wrote in message
om...
I tried several cites and I finally found a no hassle free cite.

If you are interested in seeing a really simple, fast, and SAFE single
story 8' lift elevator capable of lifting 300 pounds in 10 seconds, go
to:


http://community.webshots.com/script...bumID=96391689

Thanks for all of your suggestions and for your help.

BoyntonStu





  #6   Report Post  
Stu
 
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Default $100 Homebuilt Elevator Photos Uploaded - No hassle viewing

jim rozen,

78 visits to see the photos have been recorded in just a few hours.

I suggest that u try going to webshots.com and search for:
Boyntonstu, elevator, homebuilt, or $100.

This was supposed to be easy. Yuch!

BoyntonStu

wrote in message ...
In article , Stu says...

http://community.webshots.com/script...bumID=96391689



Hmm. This is what shows up:

Error
A problem has been detected.
You do not appear to be the owner of this album.
Make sure you are logged in.

==================================================
please reply to:
JRR(zero) at yktvmv (dot) vnet (dot) ibm (dot) com
==================================================

  #7   Report Post  
Stu
 
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Default $100 Homebuilt Elevator Photos Uploaded - No hassle viewing

"AL"

Me and so far, anyone else 300lb or less.

BoyntonStu



wrote in message news:tRlmb.21648$e01.44641@attbi_s02...
Interesting. But what do you carry on it? A person?

"Stu" wrote in message
om...
I tried several cites and I finally found a no hassle free cite.

If you are interested in seeing a really simple, fast, and SAFE single
story 8' lift elevator capable of lifting 300 pounds in 10 seconds, go
to:


http://community.webshots.com/script...bumID=96391689

Thanks for all of your suggestions and for your help.

BoyntonStu

  #8   Report Post  
Ron Thompson
 
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Default $100 Homebuilt Elevator Photos Uploaded - No hassle viewing

The building inspector and your insurance agent are gonna love this.

Ron Thompson
On the Beautiful Mississippi Gulf Coast
USA

http://www.plansandprojects.com

Where did everyone go? Oh, yeah.
http://groups.yahoo.com/group/castinghobby/
Y'all come, ya hear?
*******



On 25 Oct 2003 08:43:29 -0700, (Stu) wrote:

"AL"

Me and so far, anyone else 300lb or less.

BoyntonStu



wrote in message news:tRlmb.21648$e01.44641@attbi_s02...
Interesting. But what do you carry on it? A person?

"Stu" wrote in message
om...
I tried several cites and I finally found a no hassle free cite.

If you are interested in seeing a really simple, fast, and SAFE single
story 8' lift elevator capable of lifting 300 pounds in 10 seconds, go
to:


http://community.webshots.com/script...bumID=96391689

Thanks for all of your suggestions and for your help.

BoyntonStu



Ron Thompson
On the Beautiful Mississippi Gulf Coast
USA

http://www.plansandprojects.com

Where did everyone go? Oh, yeah. http://groups.yahoo.com/group/castinghobby/
Y'all come, ya hear?
*******
  #9   Report Post  
BEAR
 
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Default $100 Homebuilt Elevator Photos Uploaded - No hassle viewing

The mechanism is the 3/4" pipe clamp sandwiched between the 1-1/2" floor flanges. The chain rides up the 5/16" bolts and off-loads the spring
loaded brake. Should the cable break, the brake instantly comes on and nothing falls or slides down.


Now this is a clever idea... but two things come immediately to mind:

1. the "5/16" bolts" that are being loaded improperly are far more likely to
break without warning than the cable. (dynamic load vs. static - also stress)

2. the "brake" is a clever application of a pipe clamp, BUT the thing will work
IF nothing interferes with the little pipe clamp's lever, and the spring doesn't
fail. Not failsafe. I wouldn't want to trust my life or limb to the soft metal leaves in a typical
pipe clamp.

It's not a bad idea, but I'd look around for a commercial brake that happens
to also be failsafe and concentric around a pipe or rod, and either buy one
or copy it. The concept is right - its the same one used in commercial
elevators - if the load is removed, the brake engages. But the implementation
here is very, very tenuous. (not to mention the questionable strength of
the casting - is it Chinese?)

Also, I don't know what you did to cantilever out the wood platform, but
it had better be really well done, and without flaws - hopefully welded
or using real steel hardware, not stuff like that "5/16" bolt arrangement.

Then too, you need something to permit the platform to have a bearing
surface for the rotational forces - looks like ur using the wall now.

Try a strip of sheet steel and a roller or fixed wheel mounted on two sides -
or something more formal...

This might be ok for freight, but not people as it now stands.

But it has *potential*...

Oh, don't lean your toes over the edge going up... (good place for a reversing
switch??)

_-_-bear


Bob Engelhardt wrote:

Stu wrote:
...
http://community.webshots.com/script...bumID=96391689

...

The site doesn't like this full URL. Try
http://community.webshots.com/, then search for user "boyntonstu".


  #10   Report Post  
Lane
 
Posts: n/a
Default $100 Homebuilt Elevator Photos Uploaded - Very Dangerous!

You wouldn't catch me on that thing. Does your insurance agent know about
it? I'll bet not!
What happens if someones foot isn't all the way on the platform as you go up
through the opening. Off go the toes!
Lane


"Stu" wrote in message
om...
"AL"

Me and so far, anyone else 300lb or less.

BoyntonStu



wrote in message

news:tRlmb.21648$e01.44641@attbi_s02...
Interesting. But what do you carry on it? A person?

"Stu" wrote in message
om...
I tried several cites and I finally found a no hassle free cite.

If you are interested in seeing a really simple, fast, and SAFE single
story 8' lift elevator capable of lifting 300 pounds in 10 seconds, go
to:



http://community.webshots.com/script...bumID=96391689

Thanks for all of your suggestions and for your help.

BoyntonStu





  #11   Report Post  
Stu
 
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Default $100 Homebuilt Elevator Photos Uploaded - Very Dangerous!

"Lane"

The elevator operates with the person facing the pipe (toes inward)
and whose hand is on the momentary contact up/down switch. Yes, I
will admit that at times I can feel my back brushing the top opening
but the effect is so slight and the position is so far in the other
direction as not to be any problem. Also, the speed is just 'right'
as to be comfortable and controlable. The men and women who have
ridden it have all been smiles. I bet that you would also like it if
you tried it.


As far as insurance goes, I would rather live my life than worry about
what someone else thinks about what I do. If my wife likes it, that
is good enough for me. She loves it, uses it many times a day, and
brags about my invention to all of her friends.

BTW I checked the regulations and it does not fall into any known
category of elevator, man lift, or dumbwaiter.

BoyntonStu






lanenospam@copperaccentsdotcom wrote in message ...
You wouldn't catch me on that thing. Does your insurance agent know about
it? I'll bet not!
What happens if someones foot isn't all the way on the platform as you go up
through the opening. Off go the toes!
Lane


"Stu" wrote in message
om...
"AL"

Me and so far, anyone else 300lb or less.

BoyntonStu



wrote in message

news:tRlmb.21648$e01.44641@attbi_s02...
Interesting. But what do you carry on it? A person?

"Stu" wrote in message
om...
I tried several cites and I finally found a no hassle free cite.

If you are interested in seeing a really simple, fast, and SAFE single
story 8' lift elevator capable of lifting 300 pounds in 10 seconds, go
to:



http://community.webshots.com/script...bumID=96391689

Thanks for all of your suggestions and for your help.

BoyntonStu

  #12   Report Post  
Stu
 
Posts: n/a
Default $100 Homebuilt Elevator Photos Uploaded - No hassle viewing

BEAR


Good comments. I will address them one by one.

1. the "5/16" bolts" that are being loaded improperly are far more
likely to
break without warning than the cable.


There a 4 - 5/16" bolts in tension. Compare their combined (or even
individual) strength to a 3/16" cable and there is no comparison. I
consider the cable as dental floss or clothes line because of the
brake safety. The pipe just ain't going to break, nor will the 2
layers of plywood, the upper flange and threads, etc. It all comes
down to the brake and the platform.

The soft metal leaves are virgin until they are first used. Until
then they will brake 900 pounds according to the manufacturer.
Chinese or UD, there is enough steel "meat" to support several hundred
pounds without losing sleep.


The cantilever platform is supported by 2 pieces of bed frame angle
iron 1x1.

Again, four 5/16" bolts that you mistrust to anchor the platform to
the lower 1-1/2" pipe flange.

I use 2" castor wheels that slightly roll against the wall to prevent
torquing. They are beginning to mark the wall ever so slightly. I
will pain the wall and install anodized aluminum 'wall tracks'.


I conducted a string test whereby I substituted a string for a chain
link and cut it to test the brake. No problem. I weigh 180 and my
300 lb friend tested it. Perhaps a 400 pound test would be better, I
also intend to mount empty coke cans beneath the platform as a last
ditch crush shock absorber. 8 feet will hurt but most likely never
kill a feet first fall.

BTW I flew a 1,000 lb gyrocopter and trusted a single 5/16 bolt
holding the rotor and shear stressed.

Thanks for your input and comments. They were well thought out.


BoyntonStu









wrote in message ...
The mechanism is the 3/4" pipe clamp sandwiched between the 1-1/2" floor flanges. The chain rides up the 5/16" bolts and off-loads the spring
loaded brake. Should the cable break, the brake instantly comes on and nothing falls or slides down.


Now this is a clever idea... but two things come immediately to mind:

1. the "5/16" bolts" that are being loaded improperly are far more likely to
break without warning than the cable. (dynamic load vs. static - also stress)

2. the "brake" is a clever application of a pipe clamp, BUT the thing will work
IF nothing interferes with the little pipe clamp's lever, and the spring doesn't
fail. Not failsafe. I wouldn't want to trust my life or limb to the soft metal leaves in a typical
pipe clamp.

It's not a bad idea, but I'd look around for a commercial brake that happens
to also be failsafe and concentric around a pipe or rod, and either buy one
or copy it. The concept is right - its the same one used in commercial
elevators - if the load is removed, the brake engages. But the implementation
here is very, very tenuous. (not to mention the questionable strength of
the casting - is it Chinese?)

Also, I don't know what you did to cantilever out the wood platform, but
it had better be really well done, and without flaws - hopefully welded
or using real steel hardware, not stuff like that "5/16" bolt arrangement.

Then too, you need something to permit the platform to have a bearing
surface for the rotational forces - looks like ur using the wall now.

Try a strip of sheet steel and a roller or fixed wheel mounted on two sides -
or something more formal...

This might be ok for freight, but not people as it now stands.

But it has *potential*...

Oh, don't lean your toes over the edge going up... (good place for a reversing
switch??)

_-_-bear


Bob Engelhardt wrote:

Stu wrote:
...
http://community.webshots.com/script...bumID=96391689

...

The site doesn't like this full URL. Try
http://community.webshots.com/, then search for user "boyntonstu".

  #13   Report Post  
jim rozen
 
Posts: n/a
Default $100 Homebuilt Elevator Photos Uploaded - Very Dangerous!

In article , Stu says...

As far as insurance goes, I would rather live my life than worry about
what someone else thinks about what I do.


This is fine until the day that somebody sues you.

Then all of a sudden, you will care a *lot* about
what that insurance company man thinks.

Jim

==================================================
please reply to:
JRR(zero) at yktvmv (dot) vnet (dot) ibm (dot) com
==================================================

  #14   Report Post  
BEAR
 
Posts: n/a
Default $100 Homebuilt Elevator Photos Uploaded - No hassle viewing



Stu wrote:

BEAR

Good comments. I will address them one by one.

1. the "5/16" bolts" that are being loaded improperly are far more
likely to
break without warning than the cable.


There a 4 - 5/16" bolts in tension. Compare their combined (or even
individual) strength to a 3/16" cable and there is no comparison. I
consider the cable as dental floss or clothes line because of the
brake safety. The pipe just ain't going to break, nor will the 2
layers of plywood, the upper flange and threads, etc. It all comes
down to the brake and the platform.


What will break and what will not break "ain't so simple."

Stress cracks & failures are not simple to anticipate and things that
look or intuitively appear to be "break proof" have in many instances
(like airplanes, etc...) proven to be quite capable of breaking.

Threads in soft bolts can literally *extrude* off... what grade bolts are
these? What about those "flanges" that they sit in??

A THOUSAND rides later - things change!

Forces off axis can break bolts that work fine in situations where there
is no off axis force.



The soft metal leaves are virgin until they are first used. Until
then they will brake 900 pounds according to the manufacturer.
Chinese or UD, there is enough steel "meat" to support several hundred
pounds without losing sleep.


Dynamic load & static loads are not equivalent.



The cantilever platform is supported by 2 pieces of bed frame angle
iron 1x1.


Connected to what and how?



Again, four 5/16" bolts that you mistrust to anchor the platform to
the lower 1-1/2" pipe flange.

I use 2" castor wheels that slightly roll against the wall to prevent
torquing. They are beginning to mark the wall ever so slightly. I
will pain the wall and install anodized aluminum 'wall tracks'.

I conducted a string test whereby I substituted a string for a chain
link and cut it to test the brake. No problem. I weigh 180 and my
300 lb friend tested it. Perhaps a 400 pound test would be better, I
also intend to mount empty coke cans beneath the platform as a last
ditch crush shock absorber. 8 feet will hurt but most likely never
kill a feet first fall.


Maybe. Maybe you'll just brake and arm or leg, or crush some vertebrae?

Better to be 200% failsafe, eh?



BTW I flew a 1,000 lb gyrocopter and trusted a single 5/16 bolt
holding the rotor and shear stressed.


You are brave & lucky, eh? Others might characterize it differently... ' - )

_-_-bear



Thanks for your input and comments. They were well thought out.

BoyntonStu


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