FWIW, I have a video series on rope and pulleys...

R

Ron

Location
Chattanooga
They are posted on YouTube, and they start from the basics and go through more complicated systems. I explain the 'T' system for determining MA; show lots of pulley systems with discussions. I define simple, compound, and complex pulley systems and illustrate them.

There are 14 segments so far and currently I am up to compound systems. When I finish complex systems, I will start posting vids about how to deal with frictional losses in the pulley systems and tips about how to maximize efficiency.

I have made every effort to keep each segment under 8 minutes to minimize imposition on the viewer's time and to make it easier to find a particular topic.

Be very aware that although I do show some applications, these vids are about how to get MA from pulleys and how to accurately determine mechanical advantage and NOT about how to use the systems on heavy loads.

It is up to each user to determine the appropriateness of the gear for the specific application.

Not sure there's that much interest for arborists, so FWIW here are the links:

Segment 1: http://www.youtube.com/watch?v=dfwQLdqaAdM
Segment 2: http://www.youtube.com/watch?v=Tz4UL4Jiamk
Segment 3: http://www.youtube.com/watch?v=T9Ai0bwyu40
Segment 4: http://www.youtube.com/watch?v=3LgaHBkEm3g
Segment 5: http://www.youtube.com/watch?v=zX48pyWO7Pc
Segment 6: http://www.youtube.com/watch?v=sR6PTkwords
Segment 7: http://www.youtube.com/watch?v=FBuUBVCiUjE
Segment 8: http://www.youtube.com/watch?v=G24-0MQDT-k
Segment 9: http://www.youtube.com/watch?v=l_8SfGMpF6g
Segment 10: http://www.youtube.com/watch?v=tuttcnJOUI4
Segment 11: http://www.youtube.com/watch?v=p6ix8QMVNFQ
Segment 12: http://www.youtube.com/watch?v=5NKnalh9Ub0
Segment 13: http://www.youtube.com/watch?v=O150ASX3Z8g
Segmetn 14: http://www.youtube.com/watch?v=K2X7yltpGJA
 
Very nicely done. Wish I could sit some of the guys down to see this. I don't think they'd understand it anyway. Whenever I break out the block and tackle they say "there he goes again, over complicating it. Just put a truck on it!"
 
Hey Ron,
Nice work!
Are you doing your own video editing? Nice job either way!
Thanks for taking the time to share your knowledge with us all.

Again... excellent job!
 
Thanks, Mark, I much appreciate the kind words.

Yep, I do my own videoing and editing. All the zooming/panning is done after the fact in my editor.

I get the superb sound quality in adverse conditions, i.e. wind, traffic, mowers, etc., by using a lapel mic clipped to the bill of my cap; that's why I always have a cap on. The audio is recorded on a $35 RCA voice recorder I bought at Walmart. I'm not bragging at all, it's just that I have been frustrated by 'lacking' audio quality as I'm sure all have that do videos have experienced.

I mute the cam mic channel and splice the voice recorder audio in. It's a bit of a challenge to get it in phase, but it gets easier each time.

In the last vid, my batteries were weak and I lost the mic audio at the end of the clips I spliced together and to avoid having to reshoot the entire thing, I reverted to the camera mic - the difference is unmistakable.

Anyway, not that you wanted to know all that, but again thanks!
 
[ QUOTE ]
Very nicely done. Wish I could sit some of the guys down to see this. I don't think they'd understand it anyway. Whenever I break out the block and tackle they say "there he goes again, over complicating it. Just put a truck on it!"

[/ QUOTE ]

I'd get that until they couldn't get the truck in close enough or run the winch from the chipper to it.

Then it was pretty damn cool!
 
Ron, thanks for posting all of that video work. I'll be watching this in chunks, but I plan to get through all of them. I'll catch up with you soon with any thoughts. Glad you laid down the ground rules first (parallel lines, loss-less pulleys, etc...). Nice!
 
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