Not actually a build question, I was wondering if anyone had a source for quality spinners with metal back plates? Dubros used to make them, but no longer. The plastic back plates just don't keep the prop nut tight enough, and they work loose,,, Yes I use an electric starter.
Thanks

RC Dude stocks spinners that have slots cut in the cone.  These are probably the spinners intended for electric.  I see solid cone spinners on the website and these appear to be clones of what was available from Great Planes.  The only difference is that the spinners from RC Dude come with backplate bushings of different diameters to fit a variety of shafts.

Thanks for everyones input, it sounds like the only way to find the real deal is swap meets or fleabay... that's too bad.

The spinners from Great Planes had no pins, either.  Only the two screws attaching the cone to the backplate.  Yet, I see guys starting the engines with electric starters with no issues.

  Since no one makes metal spinners available here in our country any longer, I decided to try one of the eBay vendors from China. They are cheap enough and some include mounting hardware that can be used or discarded. I was looking for three blade spinners in 1 3/4" diameter, and picked the cheapest that came up in the search, which was a seller called "hxstartingline."  The spinners showed up in about 2 weeks, by way of Louisville, KY. Total cost was in the $25 range for both spinners and shipping. The quality was pretty good, and they are very light. One spinner has the center hole in the cone just a bit off center, but  the spinner turns true. They came with a smallish brass prop nut that might be too small for anything bigger than a .40. The hex isn't that large, so not a lot of contact area with the prop washer. I really prefer a steel prop nut. The threaded hole for the screw that holds the cone on was only 3mm, and the threads were very sloppy, but I was able to run a 6-32 tap in the hole and cut better threads, then ground down the OD of the head to fit in the cavity.. That felt secure enough to let me run it. I eventually made a threaded insert reduce the threads of a Great Planes adapter nut from 10-32 to the 6-32 and that works out better all around. The end of the GP spinner nut needs to be ground down a bit for some clearance. Now that i have that all figured out, if I need any more spinners in the future, I'll probably give them a try again. It's coming up on swap meet season, and I usually keep my eyes peeled for both 2" spinners and the mounting hardware. SIG used to make a pretty good plastic spinner that had a flat back plate but was all plastic, and I watch for those also. Think how many of these others are just sitting in work bench drawers and junk boxes across the country!
  Type at you later,
   Dan McEntee