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prototype-23

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Reply with quote  #16 
Something is telling me that this kit is going to test your patience/nerves. Grab your tamiya tape and do a lot of fitting!

That type of plastic and joints that need refinement on every step will make this build more difficult and dangerous for your fingers , so be careful. I have experienced this issue with a modelsvit su-7 kit.


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Choppa Nutta

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Reply with quote  #17 
Well well, it looks like you've gone for the big sin pack ! nice ... [smile]
Shame about the brittle plastic and the weird sprue gates,
oh well just you wait till have to fiddle with all that PE !!
I do hope Emperor Ping won't be feeding your carpet monster [wink]


yep, it's a reboxing ....

https://www.scalemates.com/kits/114900-oez-3-sukhoi-su-25k-frogfoot


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wimve1960

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Reply with quote  #18 
Hmm, that's indeed annoying as it gets you to filling and sanding for each and every part. Keep the mojo up. Think about the digital camo stage! [biggrin]
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[Su25K_9013_CzechAF_940731_zpskyng6nlc] 
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Liquid Magma

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Reply with quote  #19 
Ran into a snag today...one of the intake halves did not match up very well as it was heavily warped. I tried to apply a little heat with a heat gun to allow me to warp it back, but of course just made things worse. 

Looks like I may be making a resin mold from the other one this weekend... [frown]
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Liquid Magma

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Reply with quote  #20 
Making some progress on assembly.  I managed to fixed the engine intake SNAFU with a resin casing. Fortunately in this case, the left and right ducts were identical, so by making a casting of the good part I got a great fit to the other side. In this photo you can see the original at top, the cast urethane resin part in the middle and the one I tried to fix with a heat gun that just made things worse. 

[20160824_0024_s_zpsn5ohyxdg] 

Looking at reference photos of the Su-25, the cavity for the gun looks very open. The kit has a wall here, so to add some depth, I drilled out the wall added my own extensions to the cavity with some sheet styrene and smoothed the joint with some Mr. Surfacer 500. The tape is just to keep me from scratching the outboard side of the opening while I sand things smooth.

[20160821_0028_s_zpsfvb71v6l] 

I also removed the boarding ladder and step from the kit fuselage to make room for the Eduard photoetch. I might make some more details to go inside the openings in the boarding ladder piece, as these seem too hollow right now.

[20160821_0027_s_zpsbldzqhu1] 

One important note if you use the Eduard set...the piece that makes up the wall of the step (forward one) sits under the side wall of the cockpit, so secure the PE before you glue in the cockpit sidewall. I had to scrape my sidewall free to slip the PE underneath.

I also think the throttle detail looked a little flat, so I extended it into the 3rd dimension with a little bit of squashed styrene rod. You can see the gun bay extension in the photo below as well.

[20160821_0029_s_zpsgdkozxea] 

Got some work completed on the cockpit as well. I think the base of the control stick seems a bit large to me, so I might make a new one. Note that I had to add my own alignment tabs in the cockpit as well. A piece of plastic sheet makes a good spacer between the cockpit tub and the top of the gear bay.

[20160821_0031_s_zpsrhdnanp8] 

Finally I got the rest of my aftermarket parts in! Decals, ejection seat, air intakes, metal landing gear and a few options for wheels. I'll let you know how they go in future updates.

[20160826_0021_s_zpswtnk2i6e]
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Brundledonk

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Reply with quote  #21 
Great save wih the intake and a nice stroke of luck that left and right were interchangable.

Some nice goodies to go in the build to by the look of things


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Choppa Nutta

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Reply with quote  #22 
yeah great save on the intake !!

adding some great details too [smile]

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ddoc666

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Reply with quote  #23 
Agree withthe rest of the guys: Great save!! [thumb]
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Liquid Magma

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Reply with quote  #24 
Progress Report: October 2016

I got the engine halves assembled. The instructions provided a very poor indication of how to install the main landing gear closeouts, but with a little but of fit checking, I figured it out. Hopefully later releases of this kit fixed the poor instruction views.
[20160903_0043_zpsvq1ihcpy] 

After assembling the wing halves, I found the inboard edge to have a rather substantial step. Since the fit to the engine sections is already a little undersized, I didn't want to sand more away, so I elected to fill the lower gaps with sheet styrene. This joint will require a lot of work at the assembly phase I'm sure.
[20160903_0050_s_zpsaoxsjeol] 

Looking over reference photos of the entry ladder, you can make out some brackets inside the oval opening, so I decided to make my own rather than leaving gaping holes in the fuselage. I made these by cutting some left over gates off of a photo etch set and gluing them together with CA. I made a wall around them as well to further reduce the empty void effect.
[20161007_0037_s_zps5udbhx5r] 

The kit's control column is over sized at the base and does not fit with the straps on the aftermarket seat, so I glued together some styrene tubes and rods and turnned my own on a Dremel. Cut the stick of the top of the kit part and completed a more slim control column.
[20161007_0040_s_zpsa6dnze4a] 

The nose on the Su-25 contains a camera system and the assembly of the clear part for the nose looks like it will be rather difficult, not to mention there is a significant misalignment there (see photo), so I sanded the nose off enough for me to install a piece of clear styrene sheet that covers the entire nose. This will avoid me accidentially pushing the window in during masking or installation and should provide a much cleaner joint at one of the focal points of the model.
[20161028_0023_s_zpsjajaspgs] 

I added a bulkhead and simulated camera in the nose. Again I didn't like the void that the kit provides and you can clearly see a portion of the nose camera in reference photos. This isn't an accurate representation, but when everything is assembled, I think it will give the same visual effect you can see in photos.
[20161029_0012_s_zps4pzwfg1k] 


Since I carved out the opening for the cannons, I needed to add longer barrels to the guns in order to attach them further into the fuselage. I grabbed some styrene rod of about the right size, drilled a few holes in the back and glued them in place. A few extra scratch built details support the muzzle break against the fuselage and I drilled out holes for the muzzle openings.
[20161028_0030_s_zpsu5l0f54j]    

Installed, the cannons can be seen here. On the access panels above, you can see I filled the engraved lines that are on the kit above and below the upper panel lines. These do not appear as details on the real thing, although there is a bit of distortion in the skin shape roughly where these lines are. But since I don't want them standing out after I apply panel line washers, I filled them with home made styrene filler.
[20161028_0031_s_zpsmceifhju] 

The cockpit is now fully assembled and painted. I used MRPaint's "Sukhoi Cockpit Blue Grey". The color looks to be a good match to reference photos of the Ukrainian aircraft. Some black and silver details and focused black oil wash finished it off.
[20161029_0005_s_zpsndshr6gv] 

The forward fuselage ready for assembly. The instructions indicate something like a ballast mass should be added to the nose, but there is again no clear direction on how much. So I threw a few lead fishing weights in behind the camera held in place by some sticky tack and rough styrene bulkhead.
[20161029_0013_s_zpswtjo5jmr] 

The fuselage is now together and I see at lot of filling, sanding and re-scribing in my future, particularly when I start attaching the other major parts.
[20161029_0016_zpsokooea8e] 

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TedUSA

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Reply with quote  #25 
wow--you have really done some nice scratch building and other work to overcome deficiencies and kit problems--well done!
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Alba83

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Reply with quote  #26 
Nice work on this one buddy 
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Gnarkill1984

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Reply with quote  #27 
The 25 is a beast and your doing it justice with this build look forward to the next update
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Liquid Magma

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Reply with quote  #28 
Sorry about some missing image links. I moved things around on my Photobucket account and apparently the photo addresses changed as a result. I have updated what I could and reposting this for anyone that missed it (system won't let me edit this old of a post)
Making some progress on assembly.  I managed to fixed the engine intake SNAFU with a resin casing. Fortunately in this case, the left and right ducts were identical, so by making a casting of the good part I got a great fit to the other side. In this photo you can see the original at top, the cast urethane resin part in the middle and the one I tried to fix with a heat gun that just made things worse. 
[20160824_0024_s_zpsn5ohyxdg] 


Looking at reference photos of the Su-25, the cavity for the gun looks very open. The kit has a wall here, so to add some depth, I drilled out the wall added my own extensions to the cavity with some sheet styrene and smoothed the joint with some Mr. Surfacer 500. The tape is just to keep me from scratching the outboard side of the opening while I sand things smooth.

[20160821_0028_s_zpsfvb71v6l] 

I also removed the boarding ladder and step from the kit fuselage to make room for the Eduard photoetch. I might make some more details to go inside the openings in the boarding ladder piece, as these seem too hollow right now.



One important note if you use the Eduard set...the piece that makes up the wall of the step (forward one) sits under the side wall of the cockpit, so secure the PE before you glue in the cockpit sidewall. I had to scrape my sidewall free to slip the PE underneath.

I also think the throttle detail looked a little flat, so I extended it into the 3rd dimension with a little bit of squashed styrene rod. You can see the gun bay extension in the photo below as well.
[20160821_0029_s_zpsgdkozxea] 

Got some work completed on the cockpit as well. I think the base of the control stick seems a bit large to me, so I might make a new one. Note that I had to add my own alignment tabs in the cockpit as well. A piece of plastic sheet makes a good spacer between the cockpit tub and the top of the gear bay.

[20160821_0031_s_zpsrhdnanp8] 

Finally I got the rest of my aftermarket parts in! Decals, ejection seat, air intakes, metal landing gear and a few options for wheels. I'll let you know how they go in future updates.
[20160826_0021_s_zpswtnk2i6e] 
QUOTE]
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Liquid Magma

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Reply with quote  #29 
Made some progress, although things are going slower than hoped.

The engine sections are glued to the fuselage and I did a lot of filling, sanding and re-scribing of these sections prior to installing the wings.
[20161227_0002_zpsdt3icgjx] 
Since I don't have the canopy ready for installation and the photoetch was at risk of damage as I worked on assembly, I made a roll cage for the cockpit from some brass wire taped over the cockpit.

[20161227_0003_zpsxkdujrls] 
I decided to assemble and install the landing gear early because the landing gear doors are normally closed over most of the mechanisms when on the ground. The doors in this kit also have a very bad fits that need to be filled. The white metal gear doesn't add much in the way of detail, particularly the mains which look to be cast from the kit parts. There are a few pins in the gear that help with assembly, but the instructions from OEZ are worthless for the main landing gear. The nose gear locating pins to not match the kit either, so there is a lot of dry fitting and trimming prior to installation. For reference, if anyone else is curious, this is how I assembled the gear.

[20161216_0006_zpsn6ub9yce]  [20161216_0007_zpsadj6pjgk] 

Below you can see the gaps around the doors that need to be filled. The nose gear door also has some interference with the white metal gear. I trimmed the door back a bit to get it to fit.
[20161216_0008_zps7lwnqkrs]  [20161216_0009_zpssdozq3mx] 
Prior to gluing down the doors I painted the gear bays and struts since it will be difficult to paint after the doors are in place. I used the MRP-195 "Sukhoi Cockpit Blue Gray" since this appears to be the color in reference photos.
[20161220_0056_zpst87gftjw] 
Wings and tail are now glued on and working the re-scribing of the panel lines.
[20170107_0010_zpsutybuoet] 
The panel lines and rivet/screw details on this kit are pretty bad. I have been re-scribing and pinching in details all over the place in addition to the joints. Of course with every area I try to touch up, I make a mistake and have to refill, sand etc...so things are taking a lot longer than I hoped. Hopefully I can still get finished, but it will be tight considering all the other stuff I have to get done outside the hobby. 
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vdbo76

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Reply with quote  #30 
Hi, I'm impressed by the amount of work you're putting into this kit. Great update! It all looks very good and I hope you can manage finishing this beauty :-)
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