I bought Katana V2 40 size. I have OS 46AX on my other plane. I couldn't decide which engine i'll use.

OS46AX for OS FS-70 Ultimate on Katana V2 ?

is fs-70 worth for this combination ?

Thanx for your interest.

I had an OS 46 AX on mine and loved it. Great combo. Not sure but I would think the OS 70 would be more weight than you would want.

I hope to get mine mid next week. looks like a awesome plane to fly. I will put a irvine 46 with brand new JR 2810 radio and servo's. should be lots of fun!.

The 46 would be a better bet than the 70 -- just compare the weights!

The *ideal* engine would be a Saito 82 which is barely heavier than the 46 but has *gobs* more power and, because it turns a bigger prop, has incredible *instant* pull-out.

OS 4-strokes are perfectly fine engines but I doubt they're anyone's first-choice for 3D planes.

yes the saito82 would be better better than the 70 but i had a 46fx on my kat and then i put a ox70 on it just b/c i had an extra and the 70 is definately a lot better even though it weighs more

What sort of props are you guys using?.

I bought 12.25 x 3.75 APC.