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The Magic Cafe Forum Index » » Knots and loops » » Old Chestnut - Professor's Nightmare - Dimensions please (0 Likes) Printer Friendly Version

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bertoneski
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I have just bought a length of rope that I wish to cut into three to do the Professor's Nightmare routine rather than spend on the trick in a packet (I know what a miser!). Could someone measure their three lengths (no innuendo intended) and let me know what they are in cm or Imperial. Many thanks!
Al Angello
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Like a long sleeve dress shirt the best length of ropes will vary from person to person. I also do not have a meter stick.
Al Angello The Comic Juggler/Magician
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"Footprints on your ceiling are almost gone"
the Sponge
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There really is no "set length" if you know how the effect works, you should be able to make your own.

s
the Sponge
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Atlanta
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There really is no "set length" if you know how the effect works, you should be able to make your own.

s
bubbleburst2004
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How hard can it be? Cut the short one to any length you like, then the others to complete the illusion. Everyone prefers a different length.

Or blow 10$ on whits eBook and learn to do it "on the fly"
Bill Hegbli
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Fort Wayne, Indiana
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The Loftus/Empire version only cost $4.00, and it comes with the rope at your favorite dealer. Look for the name My Favorite Rope Trick, same trick, different name.
bertoneski
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Thanks for the opinions and advice people - but I was after exact measurements or relative ratios / dimensions.
magicians
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You could be true to the patter, which cheats..but works. 7, 14, 21.
Fold the 7 in half, and the 21 in half and put the loops so they touch. The middle or 14 will match the length of the long and short which are folded.
Thus 7 when folded is 3.5, 21 when folded is 10.5 add the length you get 14, which is the length of the middle. The same works for 6, 12, and 18. Or 9, 18, 27.
-------
This keeps with the original patter of "averaging". The cheat is when you have the loops intertwined, it takes up an inch sometimes, so the middle rope should be cut scant of the measurement.
We worked up a silly formula on another thread on the Café. I think it was 1/2(A)+1/2(B)=C Where c is the middle length. Also A+C=B...never mind.
Illusionist, Illusionist consulting, product development, stage consultant, seasoned performer for over 35 years. Specializing in original effects. Highly opinionated, usually correct, and not afraid of jealous critics. I've been a puppet, a pirate, a pawn and a King. Free lance gynecologist.
MrHyde
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If you know how it's done, all you need to know has been given to you in this thread
Al Angello
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If you really know how to do the trick the lengths should be apparent. The secret sessions is where secrets are revealed.
Al Angello The Comic Juggler/Magician
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http://home.comcast.net/~juggleral/
"Footprints on your ceiling are almost gone"
Bill Hegbli
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I have 3 different models from 3 different manufacturers. They are all different sizes by an inch or so. I no longer have the origianl directions for the original Professor Nitemare Effect.
bertoneski
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The dimensions I got from the Talkmagic forum are 25cm 60cm and 100cm so I able to proceed without the "wise" words....
Al Angello
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Now that you have looked it up you will not forget again. I have no meter stick but that ratio is correct.

How many cm's is it from your finger tips to your elbow?
Al Angello The Comic Juggler/Magician
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"Footprints on your ceiling are almost gone"
Troels
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I don't think I am revealing anything by stating that given a rope with the diameter of d, the lengths of the ropes should approximately match the equations:
A + C + 5d = 2B
and :
A < C

The factor 5 depends partly on the compressibility and flexibility of the material.
If theese properties are known, the proportions could be calculated with unbelievable precision.

Personally I prefer to take some pieces and use a pair of scissors for adjustment after doing the moves.

And remember: If you give the ropes out for inspection, don't give them all to one person. Give one piece to each of three different persons.

Troels
Al Angello
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The reason why I asked you the measurment between your finger tips and your elbow is because that number should be a bit smaller than the 60cm that you have for the medium size piece of rope to be the perfect combination for your arms.
Al Angello The Comic Juggler/Magician
http://www.juggleral.com
http://home.comcast.net/~juggleral/
"Footprints on your ceiling are almost gone"
murf
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San Antonio, TX
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Al, the middle size rope only as long as the distance from your fingertips to your elbow??? By that standard, the middle rope I usually use is longer than your long rope! Obviously we have different standards of "perfection";)

Murf
Al Angello
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Murf
Are you trying to confuse an old man?

When the length of the middle size rope changes the other two pieces should also change in order to maintain the desired ratio of the big one plus the little piece equals twice the length of the middle size piece. If that isn't clear you must consult with my friend Ian for further clarification.
Al Angello The Comic Juggler/Magician
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http://home.comcast.net/~juggleral/
"Footprints on your ceiling are almost gone"
murf
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Al, the relationship between the ropes is very clear. What I was questioning was the short ropes you describe as "perfect". I usually cut the long one to be about as long as my outstretched arms, which makes my medium rope longer then your long rope would be.

Murf
HerbLarry
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How to get the right proportion to ones body is an excellent question rather than how long each one should be. Thanks Al for an answer!
You know why don't act naive.
Al Angello
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Collegeville, Pa. USA
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The overall length of the trick is a matter of taste. If I made a mistake in using the word "perfect" when I should have used the words "about average" then please excuse me. If what is comfortable for me is not to your liking then by all means make it the way you like it. I find it odd that I am trying to help this gentlemen, and your only point is to disagree with me over an irrelevant matter of taste.

HAPPY HOLIDAY
Al Angello The Comic Juggler/Magician
http://www.juggleral.com
http://home.comcast.net/~juggleral/
"Footprints on your ceiling are almost gone"
The Magic Cafe Forum Index » » Knots and loops » » Old Chestnut - Professor's Nightmare - Dimensions please (0 Likes)
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