Thank you for all of the positive comments. I finally got around to detailing the plans I used to build this model. They are kinda rough but if you have any questions, please, let me know. I added the PDF plans to the original post, too.
The boundary line should be 20" x 30" to match the Dollar Tree foam board. The overall page size, in the PDF, is architectural "D" or 24" x 36".
Oh man.. this bipe really catch my heart. Gonna build one soon. Oh ya.. how about the CG, is all correct? Tail heavy? I have view the plan and your post but couldn't know where is the COG for this bipe.
I've build a couple of biplane previously including the Boeing Stearman as features in flitetest article section and end up tail heavy. Not sure where went wrong. But I definitely will be building this bipe for sure.
Hi matjey! CG should be pretty close. Just mount the battery where it needs to be - this simple design allows for easily moving the battery around in the fuselage.
I've flown the original quite a few times but I made a mistake when I built it. I mounted the top wing too far forward. That meant that my CG was different from the plans. I haven't built another one of these to check the CG with the correct wing placement. Right now, I have the battery mounted directly behind the firewall as far forward as possible - you won't need to do that if you place the wings how the plan shows.
Good luck and let me know if you have any questions.
It's been a challenge to build this biplane since you din't have the build guide for it. Since I'm already been building a couple of plane from flitetest and other source, it's easy to figure which is which.
For biplane, it always a challenging episode in finding the correct COG for it. I'm using a found image on the net to determine where is the CG for your plane design and end up with 2200mah lipo to have a proper balance.
This lead me to a 780g of AUW for this plane. And I already put the lipo next behind the motor mount. The nose still didn't barge down to make it slightly nose down for safe maiden. Could you please put some picture on how your's balance with the CG? Issit a bit nose down or a level position?
Anyway, mine didn't fly. Taxi take off failed and also hand launch failed.
I put a 1300kv motor swinging 9x6 prop. An underpowered setup for this baby. I think 1000kv or 980kv with bigger prop might make a different. But as for me, I'm not worry much on the setup. The COG that's kept me baffled.