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Old 03-06-2019, 09:42 PM
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Isaac Isaac is offline
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Cool Yak-25 (first gen) MaksArt in 1/33

My next Yakovlev jet build is the Yak-25 first generation ( the Soviets were re using the designation a few times ).
Yak-25 (first gen) MaksArt in 1/33-yak-25-flight.jpg

Yak-25 (first gen) MaksArt in 1/33-yak-25-first-gen-3-view.jpg



This is another of MaksArt design in which the Yak-19, 25 and -30 are all similar in construction and in reality the actual planes are advances in design in that order.

This model was mostly built while I was on the road in Florida where I also built the Yak-19
here is that thread
Yak-19 MaksArt kit

and here is the Yak 30 build
Yakovlev Yak 30-MaksArt


The Yak-25 information may be obtained here
https://en.wikipedia.org/wiki/Yakovlev_Yak-25_(1947).



Isaac
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Last edited by Isaac; 03-06-2019 at 09:55 PM.
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  #2  
Old 03-06-2019, 09:49 PM
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Exclamation The kit

The kit layout is the same as the previous Yak-19 and Yak-30 designs. Plain parts that are computer derived with minimal coloring other then the tactical numbers and the worn out look red stars. The original plane was bare metal; the kit renders it in light grey color.

The instructions are graphical and provide good information as to the parts location and assembly. I would say as the other MaksArt kits that it is of average complexity and can be built by anyone with 10 or 20 models built before.

Here is the kit and graphics

Yak-25 (first gen) MaksArt in 1/33-img_8894.jpg

Yak-25 (first gen) MaksArt in 1/33-img_8895.jpgYak-25 (first gen) MaksArt in 1/33-img_8896.jpgYak-25 (first gen) MaksArt in 1/33-img_8897.jpg


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Old 03-06-2019, 10:01 PM
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Exclamation Fuselage parts

Here are the parts. All are circular cross sections.


The graphics is basic. The glue tabs are good, however as usual for this designer, the axial tabs are not provided, but are easy to produce since they are all simple straight sections.

Yak-25 (first gen) MaksArt in 1/33-img_8898.jpg

Yak-25 (first gen) MaksArt in 1/33-img_8899.jpgYak-25 (first gen) MaksArt in 1/33-img_8900.jpgYak-25 (first gen) MaksArt in 1/33-img_8901.jpg


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Old 03-07-2019, 12:51 PM
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Exclamation Fuselage

Now roll the sections to shape. Circles , circles everywhere.

Yak-25 (first gen) MaksArt in 1/33-img_8902.jpgYak-25 (first gen) MaksArt in 1/33-img_8903.jpgYak-25 (first gen) MaksArt in 1/33-img_8904.jpgYak-25 (first gen) MaksArt in 1/33-img_8905.jpg


Isaac
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Old 03-07-2019, 12:57 PM
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Exclamation Aft fuselage

The design of the fuselage lends itself into building the aft, forward a dn center sections and then later joining all three.


Here is the aft section with the engine exhaust.
Yak-25 (first gen) MaksArt in 1/33-img_8906.jpgYak-25 (first gen) MaksArt in 1/33-img_8907.jpg

Yak-25 (first gen) MaksArt in 1/33-img_8908.jpgYak-25 (first gen) MaksArt in 1/33-img_8909.jpgYak-25 (first gen) MaksArt in 1/33-img_8911.jpg


I lined up the panel lines and the top vertical fin locations instead of the lower glue tabs. There was some variation with the section joining.



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  #6  
Old 03-08-2019, 04:55 AM
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Erik Zwaan Erik Zwaan is offline
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Simple Soviet design but nevertheless an elegant plane. Looking good Isaac!

Erik
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Old 03-08-2019, 05:33 PM
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Exclamation Center fuselage

Here is the internal framing and structure for the center section.
Yak-25 (first gen) MaksArt in 1/33-img_8912.jpg

Here are the parts with the landing gear cut out
Yak-25 (first gen) MaksArt in 1/33-img_8913.jpg

insert the frame, but do not glue it. It needs to float until the wings re mated later on.
Yak-25 (first gen) MaksArt in 1/33-img_8914.jpg

ready to mate to the rear
Yak-25 (first gen) MaksArt in 1/33-img_8915.jpg


and glued
Yak-25 (first gen) MaksArt in 1/33-img_8916.jpgYak-25 (first gen) MaksArt in 1/33-img_8917.jpgYak-25 (first gen) MaksArt in 1/33-img_8918.jpg


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Old 03-09-2019, 07:38 AM
rmks2000 rmks2000 is offline
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Looks good. I like the looks of this version better than the modern one - I think because I am a sucker for wingtip tanks.
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Old 03-09-2019, 08:35 AM
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Exclamation Forward fuselage

Similar rounded construction
Yak-25 (first gen) MaksArt in 1/33-img_8919.jpgYak-25 (first gen) MaksArt in 1/33-img_8920.jpg

more nose parts
Yak-25 (first gen) MaksArt in 1/33-img_8921.jpg


cockpit tub
Yak-25 (first gen) MaksArt in 1/33-img_8922.jpg


add another aft section to close off the cockpit opening
Yak-25 (first gen) MaksArt in 1/33-img_8924.jpg


add the nose gear housing
and ready to insert the cockpit from behind sliding it forward to mate with the opening



cockpit is inserted and glued
Yak-25 (first gen) MaksArt in 1/33-img_8925.jpgYak-25 (first gen) MaksArt in 1/33-img_8926.jpg

add nose weight
Yak-25 (first gen) MaksArt in 1/33-img_8929.jpg

and glue it under the cockpit
Yak-25 (first gen) MaksArt in 1/33-img_8931.jpg

add one last section to the fuselage
Yak-25 (first gen) MaksArt in 1/33-img_8932.jpgYak-25 (first gen) MaksArt in 1/33-img_8933.jpg


Isaac
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Old 03-09-2019, 08:41 AM
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Cool

Quote:
Originally Posted by rmks2000 View Post
Looks good. I like the looks of this version better than the modern one - I think because I am a sucker for wingtip tanks.
Tip tanks look cool looking!!!!!!!!!!!!!

and theoretically served a good aerodynamically purpose.

However, as far as fighter maneuverability and structurally loading the wings, ( and symmetrical separation when you jettison them ) they were terrible and were eliminated from further designs as aircraft progressed. I think the F-104 was one of the last fighters to use tip tanks.

Better to keep heavy objects close to the center if you can.



Thanks

Isaac
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