Anybody else scratch building tonight?

[mastermalpass]

Just finished up this P-61 Black Widow from 13th Squadron. It hasn't flown yet, but I'm pretty confident it'll fly like my scratch built Flite Test P-38. I'd like to add a few details but wanted to get to this state for a scale fly-in at my local club next week. The best part is the turret is on a servo and rotates.

View attachment 244505 View attachment 244506

Beautiful! Loving the flared engine cowlings as well.

 

[Timmy]

experimenting with pink foam for fuselage for the first time. Its going ok. I need to figure out a good way to cover this stuff tho.

 

[Tench745]

View attachment 244560
experimenting with pink foam for fuselage for the first time. Its going ok. I need to figure out a good way to cover this stuff tho.

I have covered pink foam with a number of different things. Lightweight, 1/2 or 3/4 oz Fiberglass is great if you can afford. You can use epoxy, water-based polyurethane (WBPU), or possibly something like Mod-Podge to wet it out.
I have also used tissue paper and WBPU instead of fiberglass and it works well for a cosmetic finish.
If you sand everything well and don't need/want the extra reinforcement, you can just lay down a couple coats of WBPU or Mod-Podge.

 

[Timmy]

water-based polyurethane

is this basically minwax?

 

[quorneng]

My latest scratch build in 3mm Depron foam.
A Swiss Airforce DH Venom from their aerobatic team. They used Venoms right up to the mid 1970s.

1200mm span and very light at 479g (17.5 oz) ready to go with a QX 50 mm 11 blade EDF and a 1400mAh 4s. Easy to hand launch and belly land on grass although the tip tanks are removed first. Almost too much thrust it can fly on much reduced throttle.
The complex bit is the inlet ducting printed in LW-PLA using lofting techniques to provide smooth shape transitions.. The short exhaust nozzle is in PLA.

The planked fuselage skin is built using the duct as a "spine".

The wing roots and cockpit are gradually built on.

The result is the much of the airframe is air. Even the booms are hollow. The Depron skin provides all the strength.
Not quick to do but planked in this way creating the smooth double curves of the full size are quite achievable.

I did have the advantage of knowing the Venom configuration would fly well as a few years back I built a smaller 800mm span one using used 2mm Depron and a modest AEO 6 blade 40 mm EDF. It actually came out quite a bit below 250g.

Being so small the colour scheme was chosen for visibility rather than scale.

 

[Merv]

The Typhoon is ready for her maiden...

Great looking plane!

 

[paperXwings]

Wired and balanced. Need to double check the aura is doing what it should. Ready for some glide tests and if I'm feeling brave, a maiden

 

[Tench745]

is this basically minwax?

Minwax and a number of companies make both an oil based and a water based polyurethane. The oil base has it's uses, but for this you want water-based. It basically a clear acrylic paint.
I have used both Minwax's "Polycrylic", and Varathane's Ultimate Polyurethane (water based) with success.

 

[leaded50]

soon to be ready with a 1934 Seversky - 3 XAR racer , who set a speed record who did stand for 49y!! It was also the leading design for the later P-47. 1050mm wingspan.

 

[Brian B]

soon to be ready with a 1934 Seversky - 3 XAR racer , who set a speed record who did stand for 49y!! It was also the leading design for the later P-47. 1050mm wingspan. View attachment 244723

Awesome build, like all your work. Interesting subject.

 

[bisco]

what a beauty!

 

[leaded50]

Awesome build, like all your work. Interesting subject.

Thanks. Yes, its a interesting plane, because its history, and the design that later developed the well known P-47

 

[shadeyB]

soon to be ready with a 1934 Seversky - 3 XAR racer , who set a speed record who did stand for 49y!! It was also the leading design for the later P-47. 1050mm wingspan. View attachment 244723

looks awesome buddy well done , love it

 

[Shurik-1960]

I got some free time from household chores and repairs (I make 2 welding inverters for my friend and repair 2 TVs for neighbors), and I started covering the MIG 3 case with 5 mm thick foam. The author made a crude project, and I redid a lot. I'll start making a wing this weekend. The fuselage will be covered with duct tape and covered with colored tape. Coloring pages will help you navigate well in the air.This is not a copy.This model is for the soul.

 

[Timmy]

I still have to put on the canards. I also need to cut cheater holes cuz I tested the edf and it sounds like a vacuum cleaner. Anyone wanna guess the plane? 😁

 

[Rusty Chicken]

Current state of my storch… while building a dozen other things…

Like, I dunno….a DRAGON maybe!!!

 

[sirJames91]

Hallo,

My latest project from the Luftwaffe series.

James

 

[Shurik-1960]

I finished wrapping the fuselage of the MIG 3 with foam sheets 5 mm thick. By the end of the week, I will start assembling the wing and install the engine and regulator.



Does anyone know why the author made such a huge compartment for the model? Maybe to hide a bottle of whiskey from his wife? I didn't think about it and repeated it, but closer to the completion of work on the model, a small hatch will be made for the battery and receiver.I realized late that making a fuselage of 2 parts is stupid and technically incompetent. It was easier to make a common frame and cover it with foam.

 

[Rusty Chicken]

Just finished her up last night. Waiting on the electronics to arrive. Can’t wait to see how she flies

 

[Foamforce]

I built a Tiny Tutor a couple nights ago. I bought a kit and made a copy of it. I only have the normal wing, but after flying that wing I immediately wanted to try a sport wing, so I started with the plans from the Tiny Trainer sport wing, shortened it, lengthened the chord, removed the dihedral, and reshaped the ailerons and wing tips to match the full size Tutor sport wing. It turned out pretty authentic looking.

I’m impressed with this plane! It flies a lot more like a full size model than the other minis. It taxis on grass well and can land on grass without flipping over if I concentrate a little. It’s very acrobatic. With the three channel setup it can do rolls! With the sport wing it rolls so fast that it’s a blur. It flies fast, it slows down nicely, has great manners, etc. I really like this plane!