Hi.

I have written some plans for a 3d/fun fly, plane and i am new in rc airplane, so I want some suggestions about my plans, which balsa wood i should use and which motor and stuff like that...

It’s around 1m in span and around 1m in length. it has a cord of 32cm. airfoil is from the indoor fun fly "tiny"

Hear are the plans:

looks about right, use some stiff wood for some stringers down the fuz and spars, the rest should be nice and light.
engine, ummm 15-25 should be about right, all mini gear, micro on the throttle.
it reminds me of the japanese plane, K something, komoro? i dunno, Cartman will, also much like the Fun15...
keep it light, have fun building and even more flying YOUR design

indeed i do.

komacro or fun15, both for 15 (ish) engines and micro gear.

i got the idea that you might be talking about a pprofile model, if so, you want ply at the front for mounting the engine, balsa around the wing and tailplane mounts and then sticks for the rest of the shape, then-sheet the lot, itll be very very stiff with all the mounting points underneath the sheeting.

by the way, you said you are new in rc airplanes, if you mean you have no previous experience then the best idea is to get a trainer.
much as your design looks eminently workable and good, its no trainer.

not only a 15, but a 15 LA no less!!! when i said 25 i was gonna say FP because these lighter plain bearing engines so seam to be popular in the lightweight funflys..

Hi.

Tanks for the answers!
cabanestrut2002 when I sad that I am new in the hobby, I meant that I don't have so mush experience, but I already have a trainer so I can fly pretty good.

I planed to put an OS 25LA on it, will that be to mush?

nope, it'll be right about mushy enough.
just like granny used to make em

hahahahahahah.
i think 25 is fine, you can get away with small servos, those ripmax or protech sd200 ones are good.

ok good, i didnt want you to be dissapointed if it crashed!!

phillybaby could you sned me plans of the komafun? I can't download them, from archives of rcuniverse My mail is [email protected] I would be pleased if you would do that.
I have been building small 3d planes for some time. 3 of them were for .15 motor. I think that your model might work even with standard servos. I have done one model with them and it could hover and do manmy other manuevers. If you would need help with the consruction just write.

NEO, its vital to get the downthrust line (if any) perfect on a profile model (i think its a profile) as you can not adjust it easily if req'd. A mistake some designers /kits have is no downthrust. If its very light and well powered you will certainly need some downtrust, and it looks you have none. A way to get the thrust bang on is to make the bearers undersize, i.e. narrow by about 5 - 8 mm and bolt the engine on as far up as it can . note some of the body of the engine will fit into the gap so mightent be as extended off as you might imagine. Note weights might be req'd to wing tip, fly just long enough to check the vertical lines, if req'd remove engine and cut in more thrust, less thrust line as req'd.

the only plan i have of that is above in my post..
try asking cartman

kunte, you mean that I have to put the engine upwards to get more lift power?

no, you still want down trust, you just need to get it right first time coz you can space out your engine mount like with normal firewalls. you might be able to over size the holes and clamp it with washers, it'll allow slight movement after.

Okay, I might just stupid or so but can you paint it on a picture? As a sad, am not so experienced in this hobby.

hi, I just wonder, how thick should the fuselage be?

Marcel

ok, heres an example of how i might roughly do it.

you want solid areas around the engine mount, wing mount and tailplane mount. i use ply for the engine mount and balsa around the wing and tail, then build the shape up with sticks, then make a template of it- just draw around the whole lot, including the cutouts for the wing and tail etc.

sheet both sides now, sand back the edges until you meet the stick frame, lay the template on top and cut through to reveal the cutouts for the wing/tail.


as for thickness, i would use 3/16 for the insides of the fuselage like the ply/balsa/sticks, and then sheet it with 1/16 balsa.