Where can you find the swallow, or these other planes?
ORIGINAL: majortom-RCU
I flew my Venus with a YS 63, 25% nitro, vertical unlimited. You don't need more power than that--especially you don't need the weight of a big engine. Much of the flying quality with the Venus comes from keeping it light.
The YS is 17.4 oz, my engine is 22.5 = 5oz difference. I could use a lightweight spinner and move radio gear as far aft as possible. I don't think that small of a weight difference would make a significant difference.