Several years ago when I lived in California, I purchased a pull-pull accessory for my giant scale plane (see pic attached). Isold the plane, and would like to buy another one, but can't remember who makes it or where I bought it. Does anyone recognize this part? Thanks, Jim

Not exactly the same as your picture, but go here for something very similar. Look under rudder trays.

http://www.whiteroseeng.com/

How would this be used in an airplane?

Unless the connection on the control surface is also a wheel the cable would tighten or loosen depenging if the horn is in front of or behind the hinge line. A loose cable on a pully would invite it coming out of the groove. By using regular arms and horns you can set it up to stay tight all the time or give a little slack when off center.

Hanger 9 makes those wheels,
I can't rememebr who made the shaft support,,,, you could make you own supports up pretty easy

here are a couple
http://www.horizonhobby.com/Products...ProdID=HAN3512
http://www.horizonhobby.com/Products...ProdID=PRB4013

Are you looking for the wheel or the axis support? I've seen the pull-pull tiller setup with the axis support but, naturally, I cant find it. Doesnt seem that hard to fabicate using off the shelf parts.
Edwin

JR made the output support. I haven't seen one for quite a while, not sure if they still make it. I can't find it on Horizon's web site.

Bob

I haven't seen one of those JR supports since they improved their servo designs. They increased the bearing spacing on the output shafts (gears) to make them more stable. Outside supports are not really required any more for most installations.

a few years ago,you could see a ton of those used on helicopters too. you hardly see them anymore. i believe that the servo construction explanation given above is the main reason.

Rafael

Thanks for the help everyone! 

I used it for pull-pull cables on my rudder, and then there's a mounting hole for a 4-40 stud to attach a ball-link and push-rod for tail wheel control.  Works great.  You're right, they are the JR pulley discs from Horizon Hobby.  I was looking for the support .  But I agree, if I use a high quality ball bearing servo and I probably won't need the additional support.

Very interesting products from White Rose Engineering.... always looking for new stuff and new ideas!

Jim

These are very popular products also
http://www.swbmfg.com/