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Username Post: Scrath build Mil Mi-24 building the plug        (Topic#75878)
mars 
Forum Expert
Posts: 188
mars
Loc: Mascouche, Quebec, Canada
Reg: 07-09-06

04-19-07 03:09 AM - Post#83580    

Hi! Guy’s

Now that my Hughes 500D is finish and ready to fly I am going to start a new build.

I decided to build a Mil Mi-24 attack helicopter. For me it is a big challenge because it is going to be biggest fuselage to date that I am going to do, there is a lot of part to mold.
Don’t hit on me to hard if you see some mistake because I don’t do that for a living there is no CNC machine at my house so I am not looking for perfection, and I wont compete in scale event. Here is a description of the real helicopter

The Mil Mi-24 is a large combat helicopter gunship and low-capacity troop transport operated from 1976 by the Soviet Air Force, its successors, and over thirty other nations.
Its NATO reporting name is Hind and variants are identified with an additional letter. The export versions, Mi-25 and Mi-35, are denoted as Hind D and Hind E respectively. Soviet pilots called the aircraft 'letayushiy tank' or flying tank. Another common nickname is 'Krokodil' (Crocodile) — due to the helicopter's camouflage and fuselage shape.
General characteristics
· Crew: 3 (pilot, weapons system officer and technician)
· Capacity: 8 troops or 4 stretchers
· Length: 17.5 m (57 ft 4 in)
· Rotor diameter: 17.3 m (56 ft 7 in)
· Wingspan: 6.5 m (21 ft 3 in)
· Height: 6.5 m (21 ft 3 in)
· Disc area: 235 m² (2,529.52 ft²)
· Empty weight: 8,500 kg (18,740 lb)
· Max takeoff weight: 12,000 kg (26 455 lb)
· Powerplant: 2× Isotov TV3-117 turbines, 1,600 kW (2,200hp) each
Performance
· Maximum speed: 335 km/h (208 mph)
· Range: 450 km (280 miles)
· Service ceiling: 4,500 m (14,750 ft)

Reference from Wikipedia encyclopedia



After a little bit of research on the net I found this 3 view plan for it,



The next step was to project the plan on the wall with my wife projector to see the size it would be for my X-cell mechanic It came to a scale of 1:10 ruffly 69 inches long. After tracing all of the different view to the size I needed I made some pattern on some lite plywood and assemble every thing together I seed to my self wow it is going to be big. Here is a picture of it at this stage.



Next step of the build tomorrow

Mars
Yvon



Mars (Yvon)
My photo galleries of the Ch-149 http://picasaweb.google.ca/Yvonlangevin


 
Ed_in_MIami 
New User
Posts: 6

Reg: 04-19-07

Re: Scrath build Mil Mi-24 building the plug
04-19-07 03:20 PM - Post#83587    
    In response to mars


Hi Mars... I read your previous post with great interest. Thanks for all the useful links.
I'll be following your work. Please don't forget to post pics as you progress.
I'm just a noob begginer, but you have Inspired me.
Take care!

 
larrytoelle 
Full Time Senior Member
Posts: 3735
larrytoelle
Loc: Fort Jones, California .....
Reg: 01-20-03

Re: Scrath build Mil Mi-24 building the plug
04-19-07 04:02 PM - Post#83594    
    In response to Ed_in_MIami

I'm with Ed ... you've got my attention ... very ambitious ... and talented. Keep it coming ...


 
mars 
Forum Expert
Posts: 188
mars
Loc: Mascouche, Quebec, Canada
Reg: 07-09-06

04-20-07 03:37 AM - Post#83621    
    In response to larrytoelle

Hi there

Ok here is a couple of pictures from the last step



This picture shows the top cowling that will permit me to fit the mechanic in



after that it is time to fill every thing with foam




mars
Yvon


the next step of the build
Mars (Yvon)
My photo galleries of the Ch-149 http://picasaweb.google.ca/Yvonlangevin


 
bitsandpieces 
Professional User
Posts: 81
bitsandpieces
Loc: Washington
Reg: 03-22-07

04-20-07 02:49 PM - Post#83637    
    In response to mars

Mars, Thanks for the translation. Magnafique or somethin like that.
b&p
"Before you give someone a piece of your mind,be sure you can get by on what's left"


 
mars 
Forum Expert
Posts: 188
mars
Loc: Mascouche, Quebec, Canada
Reg: 07-09-06

04-20-07 11:53 PM - Post#83644    
    In response to bitsandpieces

Hi guy,s

Ok when all of the foam is glued in it time to sand every thing to shape

tail boom


the two top cool



and the main fuselage



to the next step

Mars
Yvon


Mars (Yvon)
My photo galleries of the Ch-149 http://picasaweb.google.ca/Yvonlangevin


 
mars 
Forum Expert
Posts: 188
mars
Loc: Mascouche, Quebec, Canada
Reg: 07-09-06

04-22-07 04:48 AM - Post#83661    
    In response to mars

Hi guy's

Ok now for the next step, it is maybe not what some other guys would do but I am having good success with that technic. To have a hard surface on the plug I cover every thing with epoxy and a couple of coat of Fiberglass cloth, I let dry for 24 hrs and after that I add 2 to 3 coats of resin over the cloth to fill the weave.

this picture shows the first step done on the top cool



The second picture shows all the parts done, you can see the top cool in the middle it all ready received a second coat of resin on it,



A oder step I did was to cut the back part of the tail boom to have access for the installation of the tail rotor gear box and flex drive




Next step will be posted tomorrow


Mars
Yvon


Mars (Yvon)
My photo galleries of the Ch-149 http://picasaweb.google.ca/Yvonlangevin


 
copterdoctor 
Member
Posts: 154

Loc: daleville, alabama
Reg: 06-25-03

04-23-07 10:41 AM - Post#83677    
    In response to mars

i sure wish i had the time, space and patience to learn how to do that. truly a craftsman. cannot wait to ssee the end result.

 
Ed_in_MIami 
New User
Posts: 6

Reg: 04-19-07

04-23-07 01:23 PM - Post#83679    
    In response to mars

Magic!

 
mars 
Forum Expert
Posts: 188
mars
Loc: Mascouche, Quebec, Canada
Reg: 07-09-06

04-24-07 02:41 PM - Post#83698    
    In response to Ed_in_MIami

Hi guy's

after all of the fill coats was given and sanded smood it was time for a coat of primer, you can see the main fuselage primed and the tail boom just before the primer coat



after that step I build the turbine inlets



the next step was to make the resses for the side doors





the next step is the build of the side door

Mars
Yvon

Mars (Yvon)
My photo galleries of the Ch-149 http://picasaweb.google.ca/Yvonlangevin


 
mars 
Forum Expert
Posts: 188
mars
Loc: Mascouche, Quebec, Canada
Reg: 07-09-06

04-26-07 03:48 AM - Post#83716    
    In response to mars

Hi guy's

Now is the time to build the plug for the doors.
The first picture shows the mold release agent its is very efficient and it is not expensive its regular masking tape



the next step is to pour some pondo in to it



When it harden you just sand every thing flush



Hand you repeat the step for all of the doors and voila the plugs for the doors are done




Mars
Yvon
Mars (Yvon)
My photo galleries of the Ch-149 http://picasaweb.google.ca/Yvonlangevin


 
bitsandpieces 
Professional User
Posts: 81
bitsandpieces
Loc: Washington
Reg: 03-22-07

04-26-07 02:31 PM - Post#83719    
    In response to mars

Bonjour
Lookin good. Question? What type of foam are you using. Experimented a little and the foam I used (out of my recyclin bin) doesn't sand out worth a hill a beans.
b&p
"Before you give someone a piece of your mind,be sure you can get by on what's left"


 
mars 
Forum Expert
Posts: 188
mars
Loc: Mascouche, Quebec, Canada
Reg: 07-09-06

04-26-07 03:40 PM - Post#83721    
    In response to bitsandpieces

Hi bitsandpieces

  • Quote:
Question? What type of foam are you using.



I am using the regular construction foam that you use as insulation for houses, I get mine at homedepot.

Mars
Yvon
Mars (Yvon)
My photo galleries of the Ch-149 http://picasaweb.google.ca/Yvonlangevin


 
Crash 
Senior Member
Posts: 519
Crash
Loc: East Lansing, MI.
Reg: 10-14-03

04-26-07 07:22 PM - Post#83724    
    In response to mars

Just beautiful, Mars

Would love to see photos of intermediate steps.

Thanks
Itching to crash.


 
mars 
Forum Expert
Posts: 188
mars
Loc: Mascouche, Quebec, Canada
Reg: 07-09-06

04-26-07 09:44 PM - Post#83726    
    In response to Crash

Hi Crash
  • Quote:
Would love to see photos of intermediate steps.



I did not take picture of all the step of the construction basically what you see is what I have

I will take more when I will be making the mold

Mars
Yvon
Mars (Yvon)
My photo galleries of the Ch-149 http://picasaweb.google.ca/Yvonlangevin


 
rotornut 
New User
Posts: 2
rotornut
Reg: 04-26-07

04-26-07 11:30 PM - Post#83728    
    In response to mars

Mars, can you tell me where you found the drawing for the Hind. Thanks, Paul

 
mars 
Forum Expert
Posts: 188
mars
Loc: Mascouche, Quebec, Canada
Reg: 07-09-06

04-27-07 01:32 AM - Post#83730    
    In response to rotornut

Hi paul

  • Quote:
can you tell me where you found the drawing for the Hind.



all of my 3 view were found on the net with a search with Google, I saw so many site that I don't remember at witch site I download it from.

If you kneed a 3 view I could send you what I have

Mars
Yvon
Mars (Yvon)
My photo galleries of the Ch-149 http://picasaweb.google.ca/Yvonlangevin


 
rotornut 
New User
Posts: 2
rotornut
Reg: 04-26-07

04-27-07 01:44 AM - Post#83731    
    In response to mars

Thanks Mars, I tried that earlier today, all the drawings that I found had no detail, I will give it a try again, and if I don't find anything I might take you up on your offer. thanks for the help.

 
mars 
Forum Expert
Posts: 188
mars
Loc: Mascouche, Quebec, Canada
Reg: 07-09-06

04-27-07 08:29 PM - Post#83757    
    In response to rotornut

Hi guy's

Now was the time to build the wings the same process as the main fuse was used epoxy over foam fill sand and prime

a couple of pic's







The next step will be to add some flange for the opening of the top cool

Mars
Yvon
Mars (Yvon)
My photo galleries of the Ch-149 http://picasaweb.google.ca/Yvonlangevin


 
mars 
Forum Expert
Posts: 188
mars
Loc: Mascouche, Quebec, Canada
Reg: 07-09-06

Scrath build Mil Mi-24 building the plug
04-28-07 07:06 PM - Post#83769    
    In response to mars

Hi guy's

Like I told you in the last post it is time to add some flanges to the openings

The first one is for the tail rotor gear box



The other one is for the junction of the tail boom



And the last one for the main fuselage

the flange before installation



After installation



The next post will be panel line and details

Mars
Yvon

Mars (Yvon)
My photo galleries of the Ch-149 http://picasaweb.google.ca/Yvonlangevin


Edited by mars on 04-28-07 07:07 PM. Reason for edit: No reason given.

 
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