Real tapered tubes

Hi,<br>I started an experiment with tubes today.<br>You all know the pseudo tapered tubes (those with a sling which doubles the tubes)<br>I always thinking about making my own real tapered tubes.<br>Here it is, two tubes (same size) stick into each other. <img src="http://illiweb.com/fa/i/smiles/icon_cheers.png" alt="cheers" longdesc="28"><br>Works also with different tube sizes.<br><br><img src="http://up.picr.de/13266528ac.jpg" border="0" alt=""><br><br><img src="http://up.picr.de/13266550jj.jpg" border="0" alt="">

 

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<tr><td><span class="genmed"><b>Tysonspapa wrote:</b></span></td></tr>
<tr><td class="quote">wie hast du denn den übergang so fliessend hingekriegt? das sie aus wie aus einem stück <img src="http://illiweb.com/fa/i/smiles/icon_eek.gif" alt="Shocked" longdesc="5">
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<span class="postbody"><br><br>The outer tube <strong>is</strong> one piece <img src="http://illiweb.com/fa/i/smiles/icon_lol.gif" alt="Laughing" longdesc="7"><br><br>There is a 300mm tube with a 125mm inner tube at the same size.</span>

 

Here another pic.<br><img src="http://up.picr.de/13268297go.jpg" border="0" alt=""><br><br>Looks like there are three different tube sizes but its all the same 4064.<br><br>Think the tube experiments I do need to be proved with a....chrony <img src="http://illiweb.com/fa/i/smiles/herz.png" alt="I love you" longdesc="22">

 

@ Arturo,<br>I bended the inner tube with cord and a constrictor knot.<br>Slip the cord throug the outer tube.<br>Then I draw on the cord to slip the inner tube (it`s getting thinner when streched) throug the outer one.<br>This is a annoying <img src="http://illiweb.com/fa/i/smiles/icon_mad.gif" alt="Mad" longdesc="8"> work.<br>Next time I will try a compressor method for the last step.<br>I don`t want to use any lubricant.

 

I streched the inner one, so it fits in the hole of the outer one.<br>The outer one should not be streched, the inner diameter would shrink.<br>Just "push" the outer one.

 

@ Arturo,<br><br>Oh yes I streched it to the maximum drawlength, no problems.<br><br>I did a marking on the outer tube and streched it, so I could see noo slipping.<br>For the second tube I used silicon spray and this inner tube slips.<br><br><br><br>@ toksick,<br><br>I draw the inner tube completely through the outer tube and so I got the bended end outside and cut it off.<br>Hehe I thought about the same when starting this tapering.

 

Arturo I have to warn you.<br>The fun to draw the tubes inside each other is the same as sanding micarta. <img src="http://illiweb.com/fa/i/smiles/icon_mad.gif" alt="Mad" longdesc="8"><br><br>@ von_z2,<br>thank you the alcohol thing I have to try out <br><br>When I got my chrony I will be able to make some measurements of the speed.<br>But....<br><br><br><br>....when the cash runs out before the month does <img src="http://illiweb.com/fa/i/smiles/icon_redface.gif" alt="Embarassed" longdesc="10"><img src="http://illiweb.com/fa/i/smiles/icon_biggrin.png" alt="Very Happy" longdesc="1">