It is absolutely essential that tubing beaders
  are used when attaching rubber hose to tubing.

  Here is what I use.

  http://www.holley.com/009ERL.asp

  This on-line catalog is a bit recalcitrant so don't spend
  much time on-line with it. Just download the pdf
  by clicking on save the pages.

  It is a Holley product so Summit should be selling it.
  Apparently they only sell the small ones.

  Also check out Jeff's Wiggins couplings on the bottom
  of the front page of the ACRE NL web site. These are the ultimate
  in plumbing connections. Widely used in aerospace and Formula
  1 race cars. Normally they cost over $100 for each coupling.
  Jeff is doing you a large favor at only $40 a set as he is
  a rotor head through and through :)

  http://www.youtube.com/watch?v=Xz1ic-w_gsU
  http://www.ehow.com/list_6977604_hand-beading-tools-tubing.html
  http://www.lowbucktools.com/beadform.html


  Paul Lamar

Hi again,

I was trying to fined the ACRE NL web site so I could find Jeff's wiggins
couplings but could not find the web site can you tell me what the ACRE
NL stands for.Thanks.

Michael

Michael,
Read below :) Click on http://www.rotaryeng.net
scroll down on the front page until you see this jpg.

ACRE stands for AirCraft Rotary Engine.

Paul Lamar