Jim,
Here is a link to the VV site:

https://www.valleyviewrc.com/new-rcg...win-gas-engine

That looks very impressive Daryl.
Was it manufactured in China and with all metric threads?
Or...........in the US with maverick non standard imperial threads?

(To explain why I ask, the latter can be a total pain for users in countries other than the US.)

Jim,
As far as I know and can tell it is manufactured overseas. I believe the VV engines were formerly RCGF, but I may be wrong on that. The VV website has more info in that regards.
The threads are metric as far as I know.

The other part of the re engine process was that I moved it further forward to try to reduce the nose weight for balancing. You might recall that I needed over 3 pounds in the nose with the old engine for balance.......on an already heavy air frame. I was hoping to cut that back a bit. So.....this engine is 1.5 inches further forward. The cowl only had to be moved an inch. The results were that it balanced with only 8 oz of weight. The two engines were nearly identical in their weights, so this means I saved 2.5#!! That and more power hopefully will result in a better flying Waco.

More to the story.

So Yesterday I took it out to fly with the new engine on it......we had a beautiful day for flying with light winds and sunny skies. My wife went along for the re-maiden flight and I could tell from the get go that this engine made a HUGE difference! It had power in excess, and made the Waco perform the way I had hoped. Now, it is not a 3D plane, but it really looks good in the air and flys the maneuvers nicely now. The first landing was uneventful and I thought all was finally well with the world. lol

The second flight was also a success. I had made some control adjustments on throws and exponential which helped the overall feel. I put it thru some good aerobatics......loops, rolls, avalanche, hammer heads, etc. and was very pleased. But.......(there is always a "but") On the landing......all seemed well until about 10-15 feet in the roll out on the ground. It touched down nice and then the next thing I know it was on its back! As I walked to the airplane, I was hoping it was just going to be some dirt stains, maybe a broken prop at worst.....but as I got closer, I could see the rudder had been crushed, and the upper left wing outside the N struts was crushed and wrinkled as well. Well "$%@&^%#!" I thought. After I got it back to the pit area, and closer inspection, the rudder didn’t seem too bad, but I was worried about the wing. To say I was bummed would be a severe understatement. I have buggered up models before, and will do it again I am sure, but I was hoping for better on the Waco.

Now, I am not going to put blame anywhere but on me.....my landing, my responsibility. However our field is quite rough in spots....especially the outer edge where I opted to land, and I can only think that the ruts and rough ground contributed to the flip over. It doesn't matter.....it is done.

I flew other planes the rest of the afternoon, and once I got everything home, I just walked away. I new I would be in a better frame of mind in the morning, so for that moment it was just best to "Let it go" . (cue the sappy Disney song).
Here are some pics of the damage from the field.

So today it is raining and crappy outside. There could not be a better day for that as I can go to the workshop without guilt of NOT doing outside chores!
Plus, the wife is visiting our new grand daughter, so it is just me......the rain and thunder, and the Waco in the repair shop!

I spent the morning carefully cutting the covering off of the rudder and wing to get a better idea of what was needed for repairs. The rudder, as I suspected, was just crushed, and will be an easy fix, (other than recovering and painting that area) The repair to the balsa parts has been completed already. (Notice that I removed the rudder for repairs. This is why I ALWAYS make my control surfaces removable.........just in case!)

The wing......well........I got lucky if one can think that way. With the covering removed, I could see that only the leading edge and sheeting were damaged......not the spar or ribs. It could have been much worse.
So after removing the sheeting........I was able to straighten the leading edge, tack glue it in position, and then added a piece of carbon tube for reinforcement.
New sheeting was added, and once all the glue is dry, I can start the recovering process. I am glad I used the latex paint for this project as that will make the repainting a bit easier. I will maybe just use a roller to see if I can get a satisfactory finish instead of the spray gun. But.....even if I have to spray, it will be fine.

While this is a setback.........I should have it back in the air soon. Hopefully I can pick a different spot on the runway to touch down! lol

Like I said..........It was the perfect time for a rainy day!

Repair in progress pics below.

Good report Darryl, thanks.
What was the AUW with the new engine fitted compared to it with the old engine fitted?

Jim, airframe weight with old engine and weight to balance was right at 33 pounds. With new engine and lesser balancing weight it is 30# 8 oz. I think the bigger issue is simply more power from the larger engine. It simply flys better now!

D