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Scale Model RC Helicopters

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Vario Bell 47 G-III build

Richard Morgan

Senior Heliman

Virginia Beach, Virginia USA

I started this build back in early April before my shoulder got torn up. I had to put it aside while I was healing after extensive surgery. I just recently started doing some work on it again so I thought I would share my progress.



My helper Kali. She is just a baby parrot in
this picture, and only two months old.


Kali Inspecting parts.


Main rotor parts slipped onto the main mast.



Scale Head.


Mechanics now installed in the yellow powder
coated frames.


Sorting out the cabin area.


Now the tanks are installed.


Here you can see the floor frames have been
cut back to their proper location. Vario has
this detail all wrong, they have the floor
coming all the way out to the front of the
heli which is not correct. The wood parts
are glued in with BVM V-Poxy. this the best
stuff on the planet for gluing wood to fiberglass.
Once it cures it ain't coming out, so you
better have it where you want it.


Another view of the cut back floor frame.
And, yes that is Indiana Jones. I got him off
of Ebay for $40.00. He is a quater scale action
figure which is the correct scale needed for
this helicopter.


Scratch built oil cooler.


Here you can see the frame work on the back of
the oil cooler.

I am making several scratch built scale items for this Heli, such as a dummy IOV-470 Lycoming engine and sump, external oil tank, cool air intake and other stuff to help hide some of the Vario mechanics. Just because this helicopter looks like a scale Bell 47 G-3, it is far from accurate and these little additions will make a lot of difference.


This is my inspiration helicopter.


Thats all for now

Richard

Is it just me, I thought all Helicopters flew in 3D......Hmmmm?

09-29-2009 Over year old.
Richard Morgan

Senior Heliman

Virginia Beach, Virginia USA

I have already had some PM's asking where to get the BVM V-Poxy. I hope this is alright.....?

http://www.bvmjets.com

phone: (407)327-6333
fax: (407)327-5020

Bob Violett Models, Inc.
3481 State Road 419
Winter Springs, FL 32708


If you get this product just order the kit and you will get this very nice application gun with an assortment of the tips in different lenghts. It mixes the glue in the tip, and all you do is point and squeeze. It puts out a perfect bead of glue that does not run. It stays put in the joint, even in overhead situations. Again,this is the best there is for gluing wood to fiberglass. Your mechanics won't break free if you use this stuff.


Gun with two part glue container inserted and long tip shown.

Richard

Is it just me, I thought all Helicopters flew in 3D......Hmmmm?

09-29-2009 Over year old.
bwellmaker

Key Veteran

Long Island

Richard,

That is one cool inspector you got there.

Great project.

The BVM V-Poxy is the shizzle for sure. Good stuff.

Butch

09-29-2009 Over year old.
Wemo

Senior Heliman

Hampton Roads, VA

Richard, nice bird. You are going to love the Vario Electric Starter. I switched my Speed 400 motor out to a Brushless @60%. Get ready to be spoiled.

I was hoping that you were going to coming out to Debbie's two Sundays ago, but I hope to meet you one day when I'm up there again.

Daryl

"How high do they go? Are those things hard too fly? How much do they cost?

09-29-2009 Over year old.
helibeli

Senior Heliman

wales.uk

Excellent build pics.

09-30-2009 Over year old.
Richard Morgan

Senior Heliman

Virginia Beach, Virginia USA

Thanks again:

The rain has returned so I have had to put the Cheyenne aside again, even though I got more done on it, it is not quite there yet for the addition of panel lines and such. So I have been working on the cockpit of my 47. I will post some more pictures of the 47 today.

Richard

Is it just me, I thought all Helicopters flew in 3D......Hmmmm?

11-01-2009 Over year old.
Richard Morgan

Senior Heliman

Virginia Beach, Virginia USA

Here are some pictures of the lattice boom assembly for the 47. The alignment of the boom and tail drive is critical, as well as the length of each segment in the tail drive. Take your time and measure, then measure, and then measure again before you cut the four segments of tubing used to make up the tail drive. If you are careful you should end up with no end play anywhere along the length of tail drive system. I asked Wayne Parrish who owns one of these very cool helicopters; about the leather spacers used in the drive dogs. Some folks have replaced these with neoprene, but Wayne says as long as they are well lubricated before the days flying, no issues should arise.


This is Kali she is in charge of QC.


You can see in this picture I drilled a hole in the very top near the bottom edge of the large tube used to support and house the final segment of driveshaft and bearings for the tail rotor. This was done to make it easier to get at the screws in the drive-dog. Vario says this is not necessary, but hey I like the simple mod.

Richard

Is it just me, I thought all Helicopters flew in 3D......Hmmmm?

12-17-2009 Over year old.
Wayne Parrish

Veteran

Apex,NC,USA

Richard, That big boy is looking good !! I can't wait to see the two in the air at the same time !

12-17-2009 Over year old.
PETER ROB

Elite Veteran

Devon UK

Leather Pads/Seats

For all the Vario models that use these Leather pads, some lubrication is required, but pay attention to the spaceing as the ball ends will put indents into the leather pads allowing the shaft's to move,not to much of a problem, but the replacement leather pads are 1/2 the thickness of the originals (UK)
I have tied polycarbonate replacements, they are too hard
I have not tried hard rubber, but it should work well, something I am going to try on the next replacements
Peter R

12-17-2009 Over year old.
East Coast Scale

rrAdvertiser

Taxachussetts

Peter
We have been using thick black neoprene tubing and cut out a circle using a piece of brass tubing of the appropriate diameter. That way we make the drive shaft a snug fit, and no problems. This way the dot will compress when needed, and then come back to full size when not.
Joe

12-17-2009 Over year old.
PETER ROB

Elite Veteran

Devon UK

thick black neoprene

Joe, Good tip, I have various thickness's of neoprene, will give it a try, got a couple of lattice tails needing rebuild and service
thanks
Peter R

12-17-2009 Over year old.
Wayne Parrish

Veteran

Apex,NC,USA

Peter and Richard, I have some of the rubber buttons already cut for mine but haven't needed them yet.The wear that has accumulated in the dog bones occurred within the first couple of hours. Since then it hasn't worn any discernible amount. I do grease it every day that I fly it.I have at least thirty gallons of fuel through it,probably more. I need to count the flights in the log book !I do check that bird from one end to the other before every days flights. A lot can be told if you just "listen" to the mechanics and how they sing,especially when the rotor is spooling down.As you can tell ,I LOVE THIS BIRD !!!!

12-17-2009 Over year old.
Richard Morgan

Senior Heliman

Virginia Beach, Virginia USA

Wayne,

I am going to give the leather ones a go based on your recommendation. Thanks.

Richard

Is it just me, I thought all Helicopters flew in 3D......Hmmmm?

12-18-2009 Over year old.
Wayne Parrish

Veteran

Apex,NC,USA

Richard, I appreciate your trust in my opinion but if I had it all to do over I would take Joe's opinion and use the neoprene pads.He has had much more experience with them than I . I may have had just plain old good luck with mine. Joe hasn't steered me wrong yet and we are so lucky to have him be so free with his advice ! MAN,I have got to quit giving him these compliments !!! His head is already too big to get in the car ! Wayne

12-18-2009 Over year old.
Richard Morgan

Senior Heliman

Virginia Beach, Virginia USA

Alright, out with the leather in with the rubber.

Richard

Is it just me, I thought all Helicopters flew in 3D......Hmmmm?

12-19-2009 Over year old.
Richard Morgan

Senior Heliman

Virginia Beach, Virginia USA

Joe Howard or Wayne Parrish (or any one else for that matter that has built one of these).

I have a question. Are there any issues with putting the fuel tank inside one of the dummy tanks instead of under the floor? Is fuel suction an issue?

Any help with this question would help as I am ready to install the fuel system.

Richard

Richard

Is it just me, I thought all Helicopters flew in 3D......Hmmmm?

12-20-2009 Over year old.
pcinc

Senior Heliman

Westfield, MA

Richard,
I have the Hirobo 47 G and they put the fuel tanks inside the dummy tanks. I've run 3 gallons through it since I got it last July with no problems at all with fuel draw. It goes into the left tank first then there is a fuel line going from the left tank to the right tank. It fills the left, then goes right into the right tank with no problems at all. I would think if it works well on the Hirobo, it will work as well on the Vario set up.

Peter

12-20-2009 Over year old.
Wayne Parrish

Veteran

Apex,NC,USA

Richard, I have one real fuel tank in the left dummy tank and it is not an issue at all. The tank that comes with the kit is the size I have in it.If I remember correctly its 18 oz.. I fuel at the end of every second flight and it never takes much to fill it. I need to empty it and check the burn I guess. The dual tank setup works fine but you sure don't need it on the GIII since the tanks are so big. I have the radio and one satelite receiver in the right tank.I have the fill in the top of the left tank,the Vario one.In the end of the right tank I have a receptacle for my Flight Logger to plug in so I can check the reception when going to a strange field.

12-20-2009 Over year old.
Wayne Parrish

Veteran

Apex,NC,USA

Here's the link to the fueling valve and the related rings . The valve screws into the ring and the ring is mounted outside the tank and looks very scale and works great also. http://us.vario-helicopter.biz/shop...oducts_id=31852
This is a valve to simply put the fuel into the tank. It does not cut into the line like the DuBro and others do. If those valves leak they can suck air into the carb and the rest is a very unplanned auto.

12-20-2009 Over year old.
Richard Morgan

Senior Heliman

Virginia Beach, Virginia USA

Thanks again for the info Wayne, I will post the order.

Here some pictures of the instrument panel and center console being built up for the Bell 47.


First I made a balsa form from hard 1/8th balsa. Then I began to laminate sheet styrene to the balsa form that I had placed rivets on using a model railroaderís tool known as a "Sensi-Press". This is a jewel of a tool for making rivets in a number of sizes in sheet plastic and thin metals such as aluminum and brass.

After a short while this is what you can achieve.

Here is the Sensi-Press available from Micro Marc. It is a dimple and die machine that has a fixed position dimple and die and a graduated sliding bed.

Here is how you use it. Mark out your rivet pattern on the back side of the material you are using.

Line the dimpler up with your mark. Pull down on the lever.

This is what you get; perfect rivets. Be sure to roughen up the back side of the styrene with 100 grit sand paper to create a tooth for the adhesive. Then I glue it to the balsa form with CA. I prefer Mercury Adhesives M5T. Then close and glue all styrene to styrene parts with plastic solvent cement. I prefer the Plastruct brand.

Richard

Is it just me, I thought all Helicopters flew in 3D......Hmmmm?

12-31-2009 Over year old.
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