Well I finally have gotten back to my Skyrocket. A number of non carrier, both model an unrelated, projects has kept me from finishing this challenging model.
As recent discussions have shown, building a twin for carrier is difficult and frustrating. Before all the recent commentary I had started my Skyrocket for 15 profile. I have built many twins of my modeling career and currently have 5 in flying shape. None are for carrier though. Two are glow and three electric, one of the electrics is a biplane. Perhaps the main problem for a carrier twin is weight. While an unofficial event, the NCS has been using a 2.5 lb limit. We also use this Rule at the Brodak FlyIn. So although you Skyrocket is smaller, the same issues Eric and others have had apply.
I think using electric power make meeting the weight limits harder. Right now, with still some work to complete the plane, it looks ok to be within the 2.5lb (40oz) limit. My current
Weight, including the power system, with still some covering to do, hook, pushrod and gear etc, is at 31 oz.
Planned power is Turnigy Aerodrive 3530-1400Kv motors and 3 or 4s batteries. I don’t have any experience with these particular motors, but I have used other brands of 3530 type on other planes and have found it to be quite flexible. My simulation program says with 3s I should be close to 70mph, and over with 4s. However 4s will bring. Me very close to the weight limit and maybe over.
Another option are the RCTimer 2212-6 2200 KV motors. I currently am flying a Sterling P-38 with these and they look like they would be fine for carrier. The P-38 while not for carrier flies well on these motors and is heavier than would be allowed (3# 2 oz). I will likely test with them on the Skyrocket at some point. They might represent a 4s solution since with 3s batteries RPM will be very high. I only use 2s on the P-38.
While I seem to have made the weight my concern is have I made it to light. I’ll have to wait for flight tests to find out. I’ll post some pics next week.