TORRO Sturmtiger build

This section is for builds that are not strictly Tamiya or Heng Long. For instance, replacing the electronics from a WSN or Matorro, or even a scratch-build.

Postby baldrick131 » Fri Oct 11, 2019 10:57 am

This is my sturmtiger I am modifying it from the standard kit with bits i can make from scratch or 3d print I will buy some parts for it that are to fiddly to make.
I would like to say this is not a build to please all the rivet counters out there and if i get things wrong thats the way it will stay :haha: hope that dosent offend anyone its just something to do when im not fixing my motorbike :crazy:
But if there is any advice about what i am doing I would be more than happy to take it as its a bit of a learning curve for me.
So here is my starting point.
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The first things to be changed were the gearboxes and drive sprockets
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I will replace the road wheels and track eventually.
The switch bracket in the tank was absolute pants so made my own on the 3d printer now the switches line up with the hatch.
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Now it time to get serious with it and break out the cutting tools :haha: but first after some measuring and tinkering on the computer I made some virtual side mudguards.
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Which allowed me to make some 1;1 drawings
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With some .25 brass sheet and the kitchen scissors they take shape
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Here they are fitted with 12ba bolts and i think they look good not exactly factory fresh but thats not a bad thing I also fitted some Taigon etched grill covers as I wasn't going to file out all those holes :haha:
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I beat the covers about a bit to look trampled on
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Now to do the front ones just cutting them off left a massive gap the blue parts are an attempt to put a rifled liner in the barrel with a dummy projectile in there also but it makes the barrel liner look too thick Image
The projectile is simply held in place with a piece of tube shoved down the barrel of the BB gun
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The gaps were filled in with parts of the side mudguards cut off previously to recreate the front hull shape
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With the front mudguards removed the front section that holds the top in place was very wobbly so more parts of the side mudguards were used to stiffen it up
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More work with the kitchen scissors and the main part of the front mudguards are offered up
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with a bit more cutting and soldering they take shape
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I decided to do the gunners side folded over and the drivers side crunched up a bit
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I dont realy like the look of the barrel so had a go at 3d printing the version without the counter weight on the end and it needs some alering and fine tuning but it look good for a first attempt also note i have replaced the side hook brackets with 1mm brass I had kicking about and to my amazement the kitchen scissors cut it (dont tell the wife) :shh:
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When the barrel is done I will move on to replace the hatches on top of the super structure and have them opening a preliminary set has been made but again they will need more work before i set saw against tank
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Well there it is so far I hope I haven't bored you all to death with it (like the wife is when she asks me what im up to in the shed) and I have more things started to change/modify but will post about them when they get further along.
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Postby General Jumbo01 » Fri Oct 11, 2019 11:06 am

A facinating build thread, looks great. If you are prepared to do all this work in the shed, your wife should consider herself very lucky. Very, very lucky ;)
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Postby midlife306 » Fri Oct 11, 2019 11:31 am

Superb


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Postby maxmekker » Fri Oct 11, 2019 11:59 am

Great write up and photos
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Postby RenoirLV » Fri Oct 11, 2019 2:53 pm

Inspiring. Particularly the part about kitchen scissors and brass sheets.

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Postby square4 » Fri Oct 11, 2019 7:11 pm

Splendid work indeed. :clap: :clap:
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Postby Von Mooflesaaa » Fri Oct 11, 2019 7:24 pm

Following with interesting, looking forward to seeing how you tackle the opening hatches on the rear deck.

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Postby baldrick131 » Fri Oct 11, 2019 8:00 pm

Thanks everyone for the positive response to my build its been a long time since I last built a model tank and its still a bit of a learning curve as I go on.
I will be posting the stl files on thingiverse as I perfect them as I am still a novice with solidworks it might be a while lol.
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Postby 43rdRecceReg » Fri Oct 11, 2019 8:14 pm

Some elegant bits of engineering, and tweaking here :thumbup: I must say, that blue projectile is quite alluring, as well as distinctive :D
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Postby baldrick131 » Fri Oct 11, 2019 8:21 pm

Thanks I have printed a whole prjectile so if I get chance I will try and make a diarama for it when I'm not chasing the dog round the garden with it
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Postby PainlessWolf » Fri Oct 11, 2019 11:40 pm

Good evening,
Extra Sweet detailing and modification work on the Sturm'! I have one of these to eventually build and will, like you, get a Taigen complete or just the lower to put the Imperial Modelbau kit on. Following with interest ( and loving those brass fenders )
regards,
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Postby baldrick131 » Sat Oct 12, 2019 5:43 pm

I haven't done much on the sturmtiger today just fiddling about with odds and sod's fitting the jack and a bit of damage to the zimmerit
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I also filled the two holes the smoke pipes were pushed through
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As I have made some exhausts where the pipe goes into it and the smoke will exit out the top
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But more on those another time.
There was a pleasant arrival today
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I bet I'm not the only one who likes it when new shiny bits turn up.
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Postby baldrick131 » Sun Oct 20, 2019 11:52 am

I haven't been able to get to my 3d printer for a few days so I have had a go at getting a bit further with the exhausts as I had already started with them and was bored so had a crack at fitting them.
This is just after I had printed them and trial fitted before going any further with them.
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The exhausts are made with a center section that is covered with a skin made from an old beer can that is glued in place.
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I cut out some top covers out of brass I did 3d print some but they looked too bulky
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This is them all together with some dents and distortion for effect I now know they should have some flaps over the outlets but mine won't have but they will have smoke coming out as they are made with the pipe from the generator going into the exhausts and exiting out the top.
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But after removing the zimmerit from around the exhausts area the exhausts clashed with the armoured covers so I modified them to sit closer to the rear panel.
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Now to start the armoured covers first filled in the holes left from removing them followed by removing the moulded nuts and carefully drilling a hole in their place.
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Now to position them on the rear section and drill more holes and make sure that the 12ba bolts fit.
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I had to make some spacers as the 12ba bolts were a bit long and I didn't want to cut them down.
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I did offer up some covers I made from more beer cans but they are a bit flimsy so will be making them from thicker material.
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So unable to go much further with them I decided to address the new gearboxes I installed I am surprised they do not have better fixings on to the tank 1 M3 screw and 1 self tapper into plastic just won't cut it and they soon moved after running it for a very short time so time to get the drill and tap set out.
But first removing a stuck drive sprocket luckily a windscreen wiper arm removal tool I have fitted and did the trick just had to leave the screw in the drive shaft poking out so the tool could push against it.
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My plan is to add 2 more screws on each gearbox one in an existing hole and drill a new hole.
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A bit of a fuzzy photo but here it is with the 2 new screws fitted now they should be pretty secure I omitted the self tapping screws as one was stripped and they seemed redundant after refitting the gearboxes.
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Postby baldrick131 » Sun Nov 03, 2019 11:58 pm

Thing's have been a bit slow on the sturm tiger for a little while as I have had some other things to do but I have done some little jobs just to keep it ticking over.
The first thing I did was 3d print a newer version of the barrel that required the removal of some of the breech section to allow more depth to the barrel itself.
This is the new 2 part barrel it looks a bit stringy because its a new to me material Petg and it still needs more work on the printer but this one is good enough to use.
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The breech section needed modifications to let the barrel fit properly.
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Back together with the barrel fitted plus a few extra bits fitted to give more detail.
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With it fitted I took it off and started work on smoothing it off with thin layers of milliput (I haven't used it in years so another thing that I'm re learning)
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I also had a go at adding weld beads around the brackets I made from brass and other places while I had the milliput out.
That was something I have never done before.
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I took off the front 2 hooks on the superstructure because the hook parts were obstructed I moved them forward slightly and re attached them and added more milliput weld
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I got some thin brass sheet to make the exhaust covers as I didn't like the beer can material.
I first stuck the templates I made in cad.
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Then cut them out using the trusted kitchen scissors then drilled the 1mm holes.
They required a small amount of straightening but that isn't important as they will get a bit of damage before they are fitted properly.
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Here is one folded and rolled with a crease line at the top and bottom done with a straight edge and the tip of one of the wife's knitting needles.
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Both of them done Image
Now on the tank with holes drilled and fitted with 14ba bolts to make sure that everything fits.
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It's starting to look a lot better than it did straight out of the box here you can also see I have started to work on the crane but I will go more into that later as I just do smallbits on it between the big jobs.
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So that's about as far as I have got with it and hope to post more as and when I get chance to work on it.
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Postby c.rainford73 » Mon Nov 04, 2019 6:19 pm

Very nice work. I'm really impressed great job :clap:
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Postby Von Mooflesaaa » Mon Nov 04, 2019 7:57 pm

mighty impressive work, where did you get the plans to scale to cut out your own brass sections, that looks crazy helpful for future builds I have in mind.

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Postby baldrick131 » Mon Nov 04, 2019 8:27 pm

The plans were created using solidworks as a small sheet metal part and drawn up by the program as a 1:1 plan so they could be stuck on and cut round.
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Postby baldrick131 » Tue Nov 05, 2019 11:00 pm

I have put the STL and PDF files for the exhaust and cover on Tingiverse for anyone who is interested in them the pdf's are 1;1 in scale but bare in mind it may not print to scale so i have put measurments on them so the scale can be checked wit a ruler before cutting anything up.
They can be found here
https://www.thingiverse.com/thing:3958354
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Postby baldrick131 » Wed Nov 06, 2019 12:07 am

Here is the link to my pdf files for the side mudguards i made.
https://www.thingiverse.com/thing:3958427
and here is the link to the barrel stl file
https://www.thingiverse.com/thing:3958390
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Postby Jimster » Wed Nov 06, 2019 12:17 am

You are certainly a modeler on a very high level! Your attention to detail and general results are spectacular and a joy to watch.

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