Why can't I get these pulley lines straight? - Chicagoland Sportbikes
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post #1 of 27 (permalink) Old 12-16-2012, 08:38 PM Thread Starter

 
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Why can't I get these pulley lines straight?

Anyone know this stuff and can tell me why these aren't going straight so that I can try to figure it out and fix it!!

We wanted to add a cool candelier (chandelier but all candles). So, since the style of our house is very antique/old Italy, we figured it'd would look great to setup a pulley system to raise and lower the chandelier so that the candles can be lit.

Anyway, the pulleys/ropes spin and "settle" at a point where our chandelier is facing the wrong direction. We want it running parallel with the table, but it turns sideways so it's 90 degrees off.

In the picture we have a basket thing hanging to add weight/tension on the pulleys, and that spins too, and settles at that wrong angle.

Tried having the hook at the very top facing each direction, and that doesn't work, and tried tying off the rope on both pulleys (you can have it tied off on either pulley for the system to work).

Anyway, it spins 90 degrees, and we need it to be straight.

Any ideas?! Thanks in advance for any help...!!


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post #2 of 27 (permalink) Old 12-16-2012, 08:46 PM
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Get better rope. It's the twining of the rope that is moving your chandelier. That's my guess anyway. Maybe weight it more?

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post #3 of 27 (permalink) Old 12-16-2012, 11:41 PM

 
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Weight center line.

C of G if you will.

maybe hang a small weight from one side and see if it rotates???

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Last edited by resurrection; 12-16-2012 at 11:50 PM.
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post #4 of 27 (permalink) Old 12-17-2012, 12:12 AM
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block and tackles always operate "turned" to eachother

if the really want it straight use 2 sets so it attaches on 2 points to the chandelier and sets up a line in the direction you want it

-Jason
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post #5 of 27 (permalink) Old 12-17-2012, 12:26 AM

 
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Does it need be block and tackle? is it that heavy?

Gus
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post #6 of 27 (permalink) Old 12-17-2012, 07:53 AM
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Use some fishing line to gold it where you want it.

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post #7 of 27 (permalink) Old 12-17-2012, 11:25 AM Thread Starter

 
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Quote:
Originally Posted by shaugdog View Post
Get better rope. It's the twining of the rope that is moving your chandelier. That's my guess anyway. Maybe weight it more?
Tried adding weights to it. No go. Still the same result.

Quote:
Originally Posted by resurrection View Post
Weight center line.

C of G if you will.

maybe hang a small weight from one side and see if it rotates???
I'll have to try something with this.

Quote:
Originally Posted by Pilotx1 View Post
block and tackles always operate "turned" to eachother

if the really want it straight use 2 sets so it attaches on 2 points to the chandelier and sets up a line in the direction you want it
Thanks. We kind of figured this out through trial and error...but...the problem is, we moved the top pulley in each of the 4 directions, and still the bottom one doesn't line up...at best...it's off just a little bit.

Quote:
Originally Posted by resurrection View Post
Does it need be block and tackle? is it that heavy?
It doesnt...not that heavy. We just like the look of it, and that's why we chose to do it.


Worst case, we put a circular style chandelier up...that way it doesn't matter what way it turns!

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post #8 of 27 (permalink) Old 12-17-2012, 12:22 PM
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Are you OK with adding a second anchor point up top? That way you can create a "V" which will force the bottom pully to point a specific direction. It will also reduce the load on the single anchor point.

There is nothing firm, nothing balanced, nothing durable in all the universe. Nothing remains in its original state, each day, each hour, each moment, there is change. Change is the essence of life. Embrace change as you do life. To fight change is to live in the past.
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post #9 of 27 (permalink) Old 12-17-2012, 01:02 PM Thread Starter

 
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Originally Posted by Blade Runner View Post
Are you OK with adding a second anchor point up top? That way you can create a "V" which will force the bottom pully to point a specific direction. It will also reduce the load on the single anchor point.
By 2nd anchor point you mean adding a 3rd pulley to the mix?

If so...I wonder where I would add one up there. Would the V have to be equal distance apart to work properly? (the same angle from the bottom pulley)?

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post #10 of 27 (permalink) Old 12-17-2012, 02:27 PM
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I can't quite tell from the picture, but it looks like you have an 8 to 1 tied off at the top. If so, just move the knot from the top pully to a hook on the other side of the skylight. Of course, the chandelier will hang directly under the skylight if you do that but it should stop the spinning. BTW, neat old blocks. I like the hemp rope that you matched up with it too. Were you planning on running another block to a wall and down to a cleat so the line stays away from the candles and is out of the way?

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post #11 of 27 (permalink) Old 12-18-2012, 01:07 PM Thread Starter

 
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Originally Posted by Blade Runner View Post
I can't quite tell from the picture, but it looks like you have an 8 to 1 tied off at the top. If so, just move the knot from the top pully to a hook on the other side of the skylight. Of course, the chandelier will hang directly under the skylight if you do that but it should stop the spinning. BTW, neat old blocks. I like the hemp rope that you matched up with it too. Were you planning on running another block to a wall and down to a cleat so the line stays away from the candles and is out of the way?
Yup. We're running the rope down to the wall, and securing it around a cleat.

I'm looking for another pulley, trying to find one that matches these in style and size. Or we might just do a circular chanderlier in which case it won't really matter what angle it's at.

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post #12 of 27 (permalink) Old 12-18-2012, 01:16 PM
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Before this becomes an international incident , just buy a normal light fixture .

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post #13 of 27 (permalink) Old 12-18-2012, 01:33 PM
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Boring... Although I'm waiting for the story about the rope being lit on fire by a candle and either causing the chanderlier to come crashing down or burning the place to the ground.

Good thing Pete knows about P&C insurance. :

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post #14 of 27 (permalink) Old 12-18-2012, 02:10 PM Thread Starter

 
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Before this becomes an international incident , just buy a normal light fixture .
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Boring... Although I'm waiting for the story about the rope being lit on fire by a candle and either causing the chanderlier to come crashing down or burning the place to the ground.

Good thing Pete knows about P&C insurance. :
Agreed...boring!

Plus, there's no power up there, so no way to have a powered light fixture. Candles it is. I'll be sure to keep the candles out of the way of the rope! Plus we'd only use it on special occasions when we have people over, not daily.

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post #15 of 27 (permalink) Old 12-18-2012, 09:17 PM
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Did you think about Instead of using candles, but placing solar lights Into there like u would for a lawn? With the skylight right there, sun incoming through the day.

Also, how many location points do you have? If you remember older movies, there are usually 3 point locations, not including the tie down point at the end.

What kind of rope are you using? Is it a traditional twine? How far is the spacing between the twists? U may have a twine rope that has far too much spacing in the twist, which is causing the twist. You may need something that is very close twine so that it won't have the chance to rotate. Take a picture with say a quarter next to it to do a comparison so we can judge it.
But to me, it sounds like the twine twists have a big gaping in it. Old school rope that was used with these almost came off like it was a solid piece of rope. It's hard to explain by typing

Oh, also, how thick is the rope?

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post #16 of 27 (permalink) Old 12-18-2012, 10:22 PM

 
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OK how bout this.

as the rope is pulled up it winds,as it winds down it winds.

I propose a swivel type holder to the light that will allow you to rotate the light once the rope finds home.

Gus
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post #17 of 27 (permalink) Old 12-19-2012, 12:15 PM
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After further thought I think you should ditch the chanderlier and hang this from the blocks.


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post #18 of 27 (permalink) Old 12-19-2012, 02:19 PM
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Quote:
Originally Posted by Blade Runner View Post
After further thought I think you should ditch the chanderlier and hang this from the blocks.

took 17 posts to finally make sense.

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post #19 of 27 (permalink) Old 12-19-2012, 02:45 PM
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I propose a swivel type holder to the light that will allow you to rotate the light once the rope finds home.
Gus has your answer!

Something like this.

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post #20 of 27 (permalink) Old 12-20-2012, 12:05 PM Thread Starter

 
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I'll take a pic/measurement of the rope tonight.

Yeah, a buddy recommended I engineer some time of swivel system to lock it into the correct place/ange. So much for easy. 2 pulleys, some rope, done.

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post #21 of 27 (permalink) Old 12-20-2012, 03:33 PM
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Pete, I've raced sailboats for decades. Ain't nutten I can't do with a block and tackle. You're over engineering this.

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post #22 of 27 (permalink) Old 12-20-2012, 04:46 PM
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Quote:
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.............Plus we'd only use it on special occasions when we have people over, not daily.
Boring

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post #23 of 27 (permalink) Old 01-23-2013, 10:08 PM Thread Starter

 
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Here's what we did. (well what the fiance did...I simply come home to find stuff done around the house).

Found a table top, cut a hole in the middle, stained it, screwed in the hooks. Added candles and lines to connect to the pulley and we have our candelier!






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post #24 of 27 (permalink) Old 01-23-2013, 10:12 PM
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post #25 of 27 (permalink) Old 01-23-2013, 10:14 PM Thread Starter

 
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Quote:
Originally Posted by STANIMAL View Post
Before this becomes an international incident , just buy a normal light fixture .

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post #26 of 27 (permalink) Old 01-23-2013, 10:16 PM
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we should start a pool on how long before the candles burn thru the rope or cords holding the platform, fall down and start the table on fire

-Jason
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post #27 of 27 (permalink) Old 01-23-2013, 11:40 PM
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that hemp looking rope is going to burn really well!

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