ORIGINAL: AmishWarlord
ORIGINAL: ser00
Hi all,
I have wanted to build a Balsa USA Enforcer for some time now. I have seen the enforcers that have been converted to ducted and turbines. Mods on these include extending the nose by 6 inches and moving the CG 1 to 1.5 inches forward. I have also seen some of them with canards. I really like the look of the Enforcer with the longer nose and canards. i would like to do this to my Enforcer build but I do not plan on using a ducted fan or turbine, but an OS 75ax with a pusher prop. If I were to use the 75ax and extended the nose 6 inches and add canards, do I need to still move the CG 1 to 1.5 inches forward? I do not know if the CG is moved forward because of the weight of the ducted fan in the back or if it is do to aerodynamic forces and increased surface area (more lifting body) due to the six additional inches of fuselage and canards? I would greatly appreciate any suggestions,comments, tips or guidance on this.
Happy flying and soft landings!
Ser00
I though the same as you. However instead of modding the Enforcer like crazy there is a better airframe to start with that is just about perfect for you. It's called the Crusader II
http://www.rcmplans.com/index.php?ma...oducts_id=1845
You can get plans for it from RCM. It's a rear prop plane but it should take a fan eazy enough.
Here is the fan I'm going to use in mine.
Yep that would work.
Great plane to start, with your a lot closer to start with without having to re-invent the wheel, then trick it out...
If your using an electric fan you can really shed some excess baggage.
Even a propped version would be a lot closer to start with rather than adding canards to a Enforcer and then trying to figure out where the COG needs to be.
Stretching out an enforcer and adding canards is really going to change the cog requirements, your mean aerodynamic center is going to be a lot different.