Sg-122

[S e r z h]

Hello everyone.
Start a new project. SG-122. Soviet 122mm Howitzer M-30 + Stug 3.
On sale is a good conversion - but I'm wondering do it with their own hands.

www.mrmodellbau.com/_shop/product_info.php?products_id=143

Model of the firm "Star". Wanted to buy and gun, but it would not help much,
as glue around the booking screen would be much more difficult.



In contrast to the situation sous-76i - little pictures (2), and they are not very informative.
The network has a schematic view, which many take as a basis. I decided to start with drawings.
Many do not understand, there are a lot of questions - but no other material.



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[S e r z h]

The first mistake. Do not make a new tower on the remains of the former.
This happened in reality, but to do it with a tower of a set of uncomfortable, hard and accurately.
It would be easier to do it from the plastic.



Now the most difficult - armored protection tools. I have a plan, but how it is successful, I do not know)))
Did the inner frame. After it will be covered with a thin plastic. Drill size is equal to the outer diameter of the gun.

[TRM]

Looks like you have a nice little project planned! More than enough material to go on! Plans, a couple pics and the kits!! The conversion would be a great way to go my friend!! Even with the added work to the screening. But then again, saving a little money and you have the plans, why not have a go?!! Pick up an aftermarket barrel cheap and your done...unless you are planning a full interior, then of course you need the artillery piece or another kit to butcher!!

Count me in!!

Well that is what I wronte a few moments ago...looks like you are basically done...LOL! Great start to the conversion!! Glad to see things are going together!! Keep up the good work!!

[S e r z h]

Glad to see things are going together!!

Cheers - It was inevitable and expected. But did not think that so soon)))

[deafpanzer]

Your work amazes me... still following this with interest!

[petros]

Very nice project! Looking forward to see the progress!

[bullardino]

Another fantastic progress, Serzh

[S e r z h]

deafpanzer, petros, bullardino - Thank you for your interest in the topic and the good reviews.
Actually it is very difficult in the simulation segment. All joints sheets have a small overlaps or spade.
This needs to be done. I think it will be difficult and will spend a lot of time. But it is interesting - to be continued!

[S e r z h]

Welcome all! I chose the hard way. Making the skeleton, and then cover with plastic for a long time. Probably easier to take 6 large pieces of plastic and big rasp. Guessing will not - need to finish it. Looks scary, ahead of putty, and can get better. Although, I hope this method will give a more accurate result.

[bullardino]

It looks fantastic

[S e r z h]

Hello everyone! Diamond Cutting recalls)))
Overhead sheets on top, bottom and at the end will be later. Unfortunately, a mistake by creating a frame. Detail in width to get a little smaller than you need.
Make a smooth curve will not work, otherwise it will be even longer. Has not yet decided what to do - leave as is or correct ...

[TRM]

Looking good Serzh! I am thinking the mantlet is looking almost spot on judging by the prints.

[afvfan]

The work looks good. I would say leave it like it is. I can almost guarantee when you are done, you will be the only one who knows the dimensions are not quite right.

[dupes]

This very cool! Don't thing I had ever seen this variant before.

Looks like a pretty involved conversion! Nice set they've got at MR.

[Leon]

Serzh! I have to agree with Afvfan,leave the mantlet as is.Your doing some great scratch work.

[S e r z h]

I know what has been done badly - this is the biggest problem)))
perfectionism and psychiatry compatible)))


Bug fixes. The strip of plastic for height control. Putty, water and glass.
It turns neater and almost do not need to work with sandpaper.

[dierk]

Yet another excellent project! Bookmarked! Really looking forward to more.

[S e r z h]

dierk - I think it will not work quickly.
Time work on the black blanks almost over. Will continue to be accurate and precise work - it's a long time.
Plus doubts, mistakes and expectation of good mood)))

To understand the situation and vision of what is happening in general - stuck mud flaps and added without glue parts of the tower.

[johnt]

Excellent work so far!!

Cheers
JT

[bullardino]

Truly amazing

[S e r z h]

johnt, bullardino - THANK!

Suddenly thinking about how to combine gun and turret. The best way is not yet invented.

[TRM]

Looks like you're on your way to figuring out the mounting on the gun Serzh! It is possible the mounting would be the same as on the M1938 (M-30). Same gun pretty much but with the external housing and without the splinter shield.   Just a thought

[S e r z h]

Thanks for the reply.
This would be a good solution for the model with open hatches.
Combine segments model M-30 guns and self-propelled. In addition, a core set of removed all unnecessary, there is no basis.



Therefore made as planned. The axle guns at the correct height took 2-3 minutes.



The result was a robust design with the possibility of vertical guidance.
Maybe I will do the internal safety shields, mounting which you said on the photo.
But while I do not notch - we'll see them to know whether or not I can not. On the finished model that is difficult to see...

[dierk]

I know I've said it before, but it bears repeating: I love your work! Thumbs Up!

[S e r z h]

dierk - Thank you for your kind words, I am glad that my work has brought positive emotions.

Total - first, the most difficult and messy phase is over. Ahead of many more pleasant work)))

[S e r z h]

Go further ...
The width of the opening will be adjusted a little bit later. Jumper from the top just a temporary measure.
Glue the roof, only to then remove it. I am afraid that will warp sheets, due to the large incision.
I'll be back))) To be continued ...

[deafpanzer]

WOW! You are doing great so far!

[dierk]

Impressive!
I assume you are going to add bracing to the inside of the roof to prevent any warping issues?

[S e r z h]

Thank!

Dierk - Yes. It is necessary to provide all, or design "float away" would be a curve and ugly.

I Made the roof. It will be of two layers. The first (thick) for strength, the second thin that would display the thickness of the steel sheet.
Unlike the Su-76i, the sheet is not sunk to the level of the side sheets, and is on top of them. This can be seen in the photo.

[S e r z h]

I continue. Found that 0.5 mm plastic is almost over - the second layer of the roof I did not have. Go to the store - never! Made only edges a little longer time, but better than nothing))) The result - total Width 1.2 mm, stable construction, but approaching the edge Width prototype (0.5mm).