Depron Cargo Plane Build (ft-guinea)

Bloody Baron · Unread post by **Bloody Baron** » Sat Jul 25, 2015 7:43 pm

Not a good idea building differentails in to the control linkages......just saying

George.vdH · Unread post by **George.vdH** » Sat Jul 25, 2015 8:38 pm

davidbejamin wrote:Not a good idea building differentails in to the control linkages......just saying

Sorry for the dof question.. but what does that mean??

charleyza · Unread post by **charleyza** » Sat Jul 25, 2015 11:58 pm

George.vdH wrote:Mmmm! I had a similar prob with my spoeg-&-plak twin. I ended up making the engine nacelles longer & fitting HUGE motors i just happened to have. My a.u.w was 1.6kg... of which the fuse was only 400g! I didnt tape anything like u did.

Bit of rework and off she goes!

Taping it like I did was a kaak idea lol
It added so much weight, next time I will only tape bits that bend and need strength.

I moved the wing back towards the tail today and it seems to have sorted the CG. I would think it needs to come forward like I tried. Will take it to the field and ask the guys for advice.

charleyza · Unread post by **charleyza** » Sat Jul 25, 2015 11:59 pm

George.vdH wrote:
davidbejamin wrote:Not a good idea building differentails in to the control linkages......just saying
Sorry for the dof question.. but what does that mean??

Yeah, I'm confused ^_^

Tehilah · Unread post by **Tehilah** » Mon Oct 19, 2015 11:56 am

jeandredubois wrote:Hier is my Guinea Pig
Ek het my planne vergroot na 150% & daarom weeg myne so baie...
Vlerkspan so net oor die 1700mm

Moet nog hier & daar 'n sticker plak, maar verder is ek happy.
Bietjie meer as 1:1 krag verhouding, maar vlieg 18min (rustig - Vertrou nie die foam vlerk met daai gewig nie) met 'n 4sel 5000mah
Aerie weeg 2.2kg & thrust is 2.6kg

Guinea Pig.jpg

Guinea Pig1.jpg

Dit lyk Stunning!!!

NS: Like jou slagspreuk Tjomma!!!!

charleyza · Unread post by **charleyza** » Fri Jun 10, 2016 1:29 pm

Sadly this plane was just too heavy and I stripped it for parts.

Lesson learnt - dont cover depron in ductape!!

CMW · Unread post by **CMW** » Sat Jun 11, 2016 10:11 am

What span was that?

I think 2mm correx might have been a better choice of build material than foam and tape. Lighter than SA foamboard, tougher than depron and easy to paint. Ask George, he's a recent convert. But beware, it's addictive. Once again, ask George

I've got similar motors on a 1.3m span twin that weighs ~800g (IIRC) and a 1.4m Vulcan that weighs 1.6kg. Both have plenty of power. I've got the 1500KV versions and use 8x4 props and 20A ESCs. Because the current is so low, I only use one 2200 LiPo...saves almost 200g.

Actually, the P68/ Twin Otter lookalike twin was originally built with a foam board empennage, but I replaced it with 2mm correx when I realized how heavy the FOM+ board really is.

You just need to remember 2 mantras:
1) "Every gram is sacred" (Paraphrased from Monty Python)
2) "Stronger is heavier is weaker"

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George.vdH · Unread post by **George.vdH** » Sat Jun 11, 2016 12:12 pm

Yup.. Stronger is heavier is weaker!

I used to build planes strong so the are crash proof.. no such thing! Build light.. it will fly right so i dont have to crash!!

I've never used packing tape on my airies. Recenly been going smaller and lighter with my motors and batts. The results have been very pleasing.

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