Several is a different story! Why not make one. A simple design I have seen depends on some bearing balls which run on little ramps. There is a drum and a disk inside it. The ramps are cut into the edge of the disk. For one direction of turning the balls roll up the ramps until they jam against the inside of the drum which is then turned. For rotation in the other direction the balls run down the ramp and bump a steep slope (vertical wall!) and so no climbing or jamming occurs. These would be quite easy to make in the quantity you want. A ratchet would be a good alternative and I believe you can buy the wheels if you do not want to bother cutting them.
Bob At 21:11 30.10.01 -0800, you wrote: >Well, I'm looking at doing several, so I might need a consistent setup. I >want to make my own rollfilm backs. > >If I can't find another way, I might take you up on it. > >Dwight > > >----- Original Message ----- >From: Gene Johnson <[EMAIL PROTECTED]> >To: <[EMAIL PROTECTED]> >Sent: Tuesday, October 30, 2001 9:02 PM >Subject: Re: [Cameramakers] 120 Takeup winders wanted > > > > Dwight, > > > > Most of the old folders have them. If you're interested I have an old > > one around here somewhere that would probably do the trick. > > > > Gene > > >_______________________________________________ >Cameramakers mailing list >[EMAIL PROTECTED] >http://rmp.opusis.com/mailman/listinfo/cameramakers _______________________________________________ Cameramakers mailing list [EMAIL PROTECTED] http://rmp.opusis.com/mailman/listinfo/cameramakers
