I need an engine mount for my Saito 100. I'm thinking maybe this one from Dave Brown: http://www3.towerhobbies.com/cgi-bin...?&I=LXB880&P=7

Any comments? Better ideas?
Thanks

It's 1.69" between the rails and thats the same as a Saito 100

Should be OK

I may try one of those the next time I need a mount. But, I would chuck the bolts and use better ones with a hex head. And washers under them which isn't showing in the package.

Guys, I've been using Dave's mounts all the way up through the 180.
As blw has suggested I use the internal hex available through DuBro-----zero problems.

Because I wanted lower and lower noise levels I switched to some Hyde mounts which Merle was good enough to make up for me.

As I look back on my concern (years back) about whether or not the mount would be strong enough I have to laugh at those concerns-----------it will be around with the cockroaches ----- if you get my drift?

I ignored the screws in the picture. I use the #6-32 hardened hex socket head screws and washers with Tee nuts in the back of the firewall.

I've been successful with drilling and tapping the beams for the 6-32's threaded directly into the beams. You do not even need lock washers or nuts. I put flat washers under the screw heads though.

There's a person that BLW and I know that uses sheet metal screws to hold the engine and I've never seem him have a problem with the screws but I don't like the idea. I've had too many regular grade screws fail in the past. They look like they would back right out with the coarse threads but his don't. I saw where he used the sheet metal screws into wood and they wouldn't last much more than a minute.

That is the exact mount that holds my Saito 100 on my 60 size Mustang. It works great!

OK. I'm sold. Thanks very much.

I'll probably drill and tap the mounting holes and use socket head cap screws.

Yep. I drilled and tapped the mount, and used socket head screws. I probably didn't NEED to, but I also put locking nuts on the bottom of the screws. The tapered underside of the Dave Brown mount doesn't allow the locking nuts to sit against the mount flush, but all I wanted them to do is to ensure the screws didn't back out.

Jim, I meant for attaching to the firewall when using washers. I always mount the engine to the mount the way you said with 6/32 socket head screws, and it always works well. My last 2 crashes were right on the spinners, and I think only one screw came out. The mounts took a lot of punishment. You saw my first crash and the plane was going very fast after flutter. It looked like a white missile streaking to the dirt. Hard to believe, the the engine had no damage and has run for hours since then on another model.

Well, come to think of it, I do use washers on engines larger than 40-50 size on top of the engine mounting tabs.

BLW, I knew what you meant. Maybe I didn't do a good job in my post

Seeing a lot of crashes over the years, there's little difference in crash resistance between aluminum and plastic. The plastic seems to be a little more forgiving to the bottoms of the mounting lugs than aluminum.

I agree. I never liked aluminum mounts and the heavy hardware. Just my personal preferences. I like the simplicity of 6/32 screws and the light weight. I tap my holes a bit smaller than I should and it takes some wrist power to crank the screws in, but they stay put. I've backed some out over and over without any problems of the threads becoming worn.