I have heard rumblings of people putting a multi-bolt hub on some of their older 110's, but have not heard about where to get them. I have a brand-spankin' new 110 that is the version just prior to their latest, which already includes the multi-bolt hub and a 10mm shaft. I really am not comfortable with the single-bolt, especially for CF props, so I want to change it out.
Where do I get this hub??? I have tried contacting BME with ZERO success, so I don't know if it is them or someone else that carries it.
Help me out guys!

uh, bump.

Actually I have not had any problems with the single bolt/nut hub. Just make sure it is good and tight, really tight. A carbon prop would even be better, that way you do not sink the washer half way thru the softer wood props.

I've had no probs with the single bolt hub, but I did bolt the spinner back plate to the hub with the two socket head screws and counter sank them into the prop.

Thanks. Are you running a CF prop?

Since I started really tightening the prop nut, I've had zero problems with slippage, and I've used both Mejlik and Biela carbon fiber props. It's helpful to use a spinner that has good knurling on the backplate to hold the prop (like a Tru-Turn). I use Dave Brown spinners that has very shallow knurling, so I also fold a piece of sandpaper in half with the rough side out and maybe 2" square, and put that between the backplate and prop and tighten that down with a socket wrench (TIGHT!).

ZERO slippage.

Well, I'm bolting this engine to a Yak and may want to do away with a spinner. I just think the multi-bolt would not only look better, but be better.

I have ran both, BME 27-10 wood and a Mejzlik 28-10 carbon. Neither have slipped.

I have used drywall sand paper as backing for the spinner (dave brown) works great!

Fancier in this case is not better. A single bolt hub works just fine, and when the prop is spinning it's kinda hard to count the bolts.

Our 30 hp 289 twin racing engine has 3 bolts holding the prop on...A 3/8x24 center bolt and two 1/4x20 anti rotation bolts...It would work (and has) with only the center bolt when the other two got loose when we forgot to check between rounds...If it had been a 6 bolt hbu without the center bolt the 6 would have sheared off and the plane would have been destroyed...As it happened the center bolt got tighter when the other 2 sheared...NO six bolt hubs for me......
A 3/8x24 grade 8 center bolt will hold ANY prop on ANY rc airplane ever made...
The key word is TIGHT..
The prop was a CF 21x28 turning at 9000 rpm....

Thanks guys. The conversation is over. I already sent the engine to Kieth and had the mod done and got it back. The other real nice thing about it is I won't have to worry about perfectly drilling the center prop hole every time...it's knida hard to fing a 10mm-7/16" step reamer around here, or anywhere!