Well this may sound a little negative about the issue....So let me start out by saying it is possible to build a better mouse trap. I also admire the work people put into things and the innovation that is shown. On the other side of the coin I have struggled in my pattern career and found that when I used the right equipment, and paid attention to details like this my flying time increased and my repair or building time decreased. I'm trying to share my experiences with this group and not contradict someone else's ideas'

The YS or OS 140 AR is NOT $200 it is $120

This having been said I make my equipment choices based on the model lasting 3000 flights or more. If the setup needs to be replaced every 20-30-100 flights I choose not to use that product unless it gives me an advantage in another area. If there is no advantage to the performance of the model or longevity then I scrap the idea.

BB clevis links are an example---Yes they cost 2-3-4 times that of a Dubro clevis....But to get 3000 flights you 3-4-5 sets of the equipment over the life of the model. Plus if a failure occurs before you catch it and repair it you can loose the model. Not to mention the BB clevis has needed replaced in that 3000 flights so my time was not used to replace it....And it works in a more friction free, and tighter setup. The clevis into a plastic hole will wear also...SO this requires replacement and more bench time to reset the control throws and precision of the system.

Now to answer your question in a very straight forward NO BS way:

Up until 15(ish) years ago we were not running motors bigger than 60's with 11-12inch props. With 15-16-17 and now 18" props vibration is magnified. Not to mention that bigger motors make more power and the airframes really don't weigh that much more that they did with the 60's....We were flying 7-8lb models on 60's and now we are flying 10-11lb models on 140's 160's and the 170's. The models grew in mass by 20-30% and the power of the engines Went from 1.5hp to 3.5hp.... more than doubled.

Vibration problems usually doesn't cause the model to crash at least not in the short term.

What does it do? wear out servos! Wear out linkages, and so on..When the pots wear the servos don't center properly or well. And yet we pay premium money to get servos that do center well and hold their position. Also gear slop makes things like pot wear even worse. You may be paying anywhere from $50 to $100 for a precision servo....and after 200 flights it performs the same as a $9 Generic servo when the engine in the model is not properly mounted. Proper mounting in my vocabulary is more than just a mount that keeps the motor attached to the model.

If you are trying to fly precisely the last thing you need is worn servo pots and gears. It makes it impossible to fly in a straight line. It makes it impossible to keep your wings level, and it makes it impossible to pull a straight corner. Same with sloppy linkages. These points are all points of failure and if they don't fail then they become loose and defeat the purpose you are trying to achieve. PRECISION AEROBATICS

Are you willing to buy new or rebuild servos every 50 flights. That is what is required to keep the servos in working proper order on the above model with this mount. Now your standards may be lower than mine for precision on the servos, and the amount of pot wear you will accept...But I can tell you the servos will last 2-3-4times longer than a hard or (poor Soft mount) mounted system

There is a difference between, the servo moving the control surface, and the servo holding its position properly and centering properly.

Until you get really in-tune with your model and your flying, you may not ever realize the benefits of the equipment the successful pattern pilots choose. Those that are a success choose their equipment very carefully. Sponsorships really play very little role....Companies don't hand product to pilots except the top few 3-4 in the world. And these pilots can run whatever product they choose. Their choices are to make life easy on them, or for the performance advantage given by a specific product. If the product gives an advantage then the pilot can go get it from that company....Performance is just too important at that level of success. Not to mention when is something going to fail? When it counts in a round at the F3A NATS Finals. Or even at a local event when you are scrambling to get that extra point in Sportsman because there is bragging rights to be gained at the local contest. How many times have you guys witnessed a pilot that traveled to an event got there and could not fly in the contest? His model broke, something failed, motor went south, or even his motor mount broke and he needs to take it home and rebuild the darn thing. Well in all my years running Merle's mounts I never had this type of problem....It just plain works and is the best system we have right now. IS there a better one out there waiting to be invented...I'm sure there is.....But the Well Nut mount we are discussing is not one of those!

This is a game, and we keep score for a reason.

The unfortunate part of the internet is that just because someone says it or posts a picture that they did it doesn't make it is a good way to do things.

No offense to AeroBob as he told you the mount doesn't do much for vibration...My question is then why use it?

A Dave Brown Fiberglass $5 mount will keep the motor attached to the airframe.

This may sound harsh, but I make the choices on my models and I'm telling you why I choose the stuff I choose. I give this info free and its worth what you paid for it. The real question is what is you model worth to you and how much is your time worth to you.

Happy flying
Troy