I have been doing some calculation on weight vs. the Evolution 60NX engine.

Evolution 10cc Gas is 23 ounces all in. (book says 22 but I used the guy that weighed it on a scale in this forum)
Evolution 60NX glow is 17 ounces all in. (it may really be 18 but I am using the published specs)

But, I use a 16 ounce tank normally for a 10-12 minute glow flight, and I am thinking 8 ounces of gas tank would be more than needed to provide 15 minute flights, possibly a 6 ounce tank would be enough. So you can save 8 ounces of fuel, maybe 9-10 ounces figuring the smaller tank will weigh less. So that gives you a net savings of 3-5 ounces, which will go towards the ignition pack.

Overall, its very close weight to the 60NX glow based on my logic above.

Now for the power, prop rpm readings I am seeing here are comparable to what I get on a 60 glow motor, so the power seems similar too.

So, this should be a perfect motor for a plane like the Hangar 9 Katana and should be good for 3D with the power to weight ratio. Did I conclude this right or did I miss something?

My conclusion