shaf8831
I have scratch built several planes out of foam but have never built a jet so i am looking at my first, my question is has anyone ever built one of these with balsa? if so did it work out ok? and do you have any tips for a noob scratch jet builder?
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F1wanabe
What is the reason you want to build balsa? I grew up around balsa and never wanted to try it.
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fishwhisperer83
Someone on here made a balsa t-50 v2 It was nice looking but he put a lot of work into it and it had to have a very big motor. I may try this years down the road but i think people use foam because they have tried tons of materials and have found that foam is best
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JettaManDan
I've done it and hated the time it took and the space it took....you need a completely flat surface..something under the parts to hold them too..i used a foam sheet as a base..then laid the plans over that..used wax paper on top..and then pinned the blasa to the sheet...then used a mizture of CA and epoxy for the build...i built a small plane and even then it took a month to build...then i had to cover it..buy the covering...cut it..then use a covering iron to put it on..trim and tape and pull and etc....when i was done it was about 1/3 more heavy than it should..didn't fly well..and one little crash resulted in about a week of repair...never again..foam is the only way i will build now....

you need a fine hand saw..a good dremel....good glue products or epoxies..and patience...good luck!
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rcfoamfly
In Australia they are making surfboards out of sheets of epoxy injected Bamboo. 2 times lighter than Balsa but 4 times the price. I am waiting for the price to drop and might give it a go. I saw JettaManDan Balsa Jet and it was awesome but i couldn't handle the emotional turmoil if i crashed it. But nothing beats print, cut, glue, insert, fly, crash..................and again!
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rodrigo
I found in balsa a excellent reinforcement material for critical parts, used like beams (6x10mm) especially in my twin books planes... is flexible but resist impact in better way than foam with lower torsion ..
but traditionally balsa technic is another thing... really hard, slow and fragile ... nothing fun for me. I try a couple of planes 10 years ago and the second one never finished... now with the rcpower building concept I built more than 10 planes in less than 3years and I am really busy guy

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Airforce101
Quote:
I've done it and hated the time it took and the space it took....you need a completely flat surface..something under the parts to hold them too..i used a foam sheet as a base..then laid the plans over that..used wax paper on top..and then pinned the blasa to the sheet...then used a mizture of CA and epoxy for the build...i built a small plane and even then it took a month to build...then i had to cover it..buy the covering...cut it..then use a covering iron to put it on..trim and tape and pull and etc....when i was done it was about 1/3 more heavy than it should..didn't fly well..and one little crash resulted in about a week of repair...never again..foam is the only way i will build now....

you need a fine hand saw..a good dremel....good glue products or epoxies..and patience...good luck!



...and not to mention the mess it makes, all that balsa cutting and sanding! I can build my foamy on the kitchen table and the only mess I get is the cut-off's, which are easy enough to get rid of. Only the sanding makes a little mess, but then again you hardly have to do any sanding on a foamy anyway... (unless you want to pretty-fy your plane with filler/spackle etc)
My avatar is what I look like after a "landing"...
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satt01
Ive built plenty of balsa models. All kinds of models, all sizes.
I had fleets of them. The wings comes off...they have too. So I can store a larger fleet.lmao
I build them, I crash them, I repair them. I recover them..ect
It's another part of the hobby. I don't get too in a hurry. Its a hobby.
I can put a kit together in a week, if I want to.

You learn how to build different technique. Not all balsa models are the same.
Sometimes they're foam core wings..So I'll have to sheet wings with balsa.
Sometimes I'll use figerglass

I also had a nice big glass dinning room table.lmao
I also used an old stereo glass piece sometimes.
They're straight, flat and true.
You all might try cutting your foam on one.
It dosnt dull the blades. Plus I can easily clean it with a razor blade.
I also had a model /hobbie room.

I tac the ends of the spar to the table.
I tape the plans under the glass....

I havnt built one of these out of balsa...but it would be easy or the same.( to me)
You can look into Shumate designs...it's basically balsa technique constructions.
You can wet the balsa to curve it...ect. Just as you can wet foam with windex.
to curve it.

I made a couple shumate out of foam...just to see.
All that foam cutting and sanding is about the same.lmao
So you might try building a couple of those out of foam first.
Or at least the front fuselage section...I actually extended the fuselage
nose section longer..but made the nose cone shorter.
Use a block foam instead of laminating it. The same for the canopy.

Building foam.
I just tac the bottom foam piece to my building surface. (with a center line )
Use a square or triangle to make use the pieces are straight
Then I tac with hot glue instead of CA.
Then I can use regular white glue...saves lots of weight.

I don't do slots...cutting slots or the jigs for them sucks.
I use tooth pick...less glue.

Shumates designs don't have a lot of slots in them.
Draw and Cut out the parts faster.

Don't bother cutting the formers to plans.
You have to measure.

If you build one of these prop in slot models out of balsa...you'll be able
to make one with a removable wing....

As for jets...
The only different would be the main wing...because they're symtrical airfoil.
I build a great planes Lear Jet, patriot, and a TF F-15...it's all the same.
Boxy type fuse. The decks are for looks.

Even aerobatic models ex300, caps 232 are all box fuse...the decks are just for looks.
The top of decks formers are curved...you just wet a sheet of balsa.

You can use .99 cent warping film from the dallor tree sore for covering to save lots of money.
If you have a model building iron...set it on low heat.
Just use 3m spray adhesive to the edges
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whatmovesyou
My first question is have you flown EDF jet's at all?

If not, build a few foamy jet's to get a feel of how it performs and its limitations. Spooling up, lack of thrust, need 4s rather then 3s(weight problems) plus flying skills(no tight turns, slight power on landings,etc) need to be addressed before you put a lot of effort into balsa building. Much easier to repair the foam.
I like to design and fly unique planes.
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