Re: [TANKS] T34-85 from Denmark

[Derek Engelhaupt]

Welcome to the group.  Build the tank first...then add all the bells and whistles.  :)  You will find that a lot of people have big ideas for gadgets and never end up even finishing the tank.  :)

Derek

On Sun, Jan 27, 2013 at 4:56 PM, Niels Erik Kristensen <ne...@live.dk> wrote:

Hi there, sorry for my English !! Iam just startet on a T34-85 (thanks to nr T005 for the drawings)

I think that iam the only one to make a big tank in Denmark, so i will made a few options to my tank. First of all i will use brushless motors, and 4S lipo batteries, That is what i no of, since i have been a rc pilot for many years. This way i can save weight, and add power-The motors that i will use are 2* 750watt!!  And the controllers are with forward ,brake and reverse.They come from a RC boat, so i will have watercooling onboard!!

And then i will use somthing that i have a lot of fun with with my planes!-I will add a complet FPV gear, with 2 cameras-One camera on the turret, the comanders place. That camera can turn 360 degrees, without turning the turret. The other camera are inline with the gun, and will point same way als the gun-Looking where the paintball will hit.My sight will be a laser pointer. My paintball marker are a Inferno field cal 68-And old used one that i got cheap.

The FPV gear are linked to my video goggels-So i can sit in safe distance, and have my ovn battel!! The setup i have for now can let me drive my tank atlest 1,5 km away, without loosing video feed ore control of the tank. I dont no if it aginst your rules?  But i will properly never engage any of you-Iam all alone here in Denmark!

If youre are intrestet i will post photos later of my tank, building in pogress

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[Frank Pittelli]

We'd love to see pictures of your tank as you build it. Feel free to
post one or two photos to the mailing list, along with construction
details, as you build various parts.

On 1/27/2013 5:56 PM, Niels Erik Kristensen wrote:
> If your are interested i will post photos later of my tank, building in
> progress

[TyngTech]

" I am just startet on a T34-85 (thanks to nr T005 for the drawings)"

Draw it and they will build!  ;-)

Niels,

Welcome to the group.  I look forward to your build photos as you progress.  With brushless motors and the light weight batteries, your T-34 will fly.  Good thing your an experienced R/C flyer!

Steve Tyng

T005, T040 

[Pete Arundel]

 "But i will properly never engage any of you-Iam all alone here in Denmark!"

Well that depends where you are in Denmark. I have friends I visit way up north in Als and Oster Hurup, so I could possibly bring a tank over one year.

Of course I'd have to FIX my tank first . . .

Pete.

[Niels Erik Kristensen]

Den søndag den 27. januar 2013 23.56.13 UTC+1 skrev Niels Erik Kristensen:

Hi there, sorry for my English !! Iam just startet on a T34-85 (thanks to nr T005 for the drawings)

I think that iam the only one to make a big tank in Denmark, so i will made a few options to my tank. First of all i will use brushless motors, and 4S lipo batteries, That is what i no of, since i have been a rc pilot for many years. This way i can save weight, and add power-The motors that i will use are 2* 750watt!!  And the controllers are with forward ,brake and reverse.They come from a RC boat, so i will have watercooling onboard!!

And then i will use somthing that i have a lot of fun with with my planes!-I will add a complet FPV gear, with 2 cameras-One camera on the turret, the comanders place. That camera can turn 360 degrees, without turning the turret. The other camera are inline with the gun, and will point same way als the gun-Looking where the paintball will hit.My sight will be a laser pointer. My paintball marker are a Inferno field cal 68-And old used one that i got cheap.

The FPV gear are linked to my video goggels-So i can sit in safe distance, and have my ovn battel!! The setup i have for now can let me drive my tank atlest 1,5 km away, without loosing video feed ore control of the tank. I dont no if it aginst your rules?  But i will properly never engage any of you-Iam all alone here in Denmark!

If youre are intrestet i will post photos later of my tank, building in pogress

[Fred Thomson]

Looking good, Niels!

Welcome to the hobby. Don't be afraid to ask questions, there is
decades of experience you can draw on.

Cheers,
Fred

[Niels Erik Kristensen]

More photos: Redy to make turret fith glasfiber-Also found a driver :-)

[Niels Erik Kristensen]

More photos:

Now i have made a suspension, and the turret are almost finsh, made of glasfiber and with grey primer

[Sam D'Haene]

Looks great so far! I've always been a big fan of the T-34  :)
Nice suspension setup! but I've a small consideration:
Do you think the suspension arms will hold the torsion by the offset of the wheels? I think it's going to bend easily.

I had some issues with it in the past :)

Cheers,

Sam.

[Jacob]

Ya I dont think those suspension arms are strong enough. But I could be wrong.

[Niels Erik Kristensen]

Its my first tank, and i also dont no if they are stromg enough-But they are made of steel, and if they dont hold, i will weld some more steel to them :-)

[TyngTech]

Nice work on that turret!

Steve

[Niels Erik Kristensen]

Thanks :-)

[Niels Erik Kristensen]

A littel more pogress, this time om my tracks.

I have made ca 1 meter track for mesuring , but all steel er redy. But i will make the wheels before i make more track.

I startet with a ½*5/16 chain with taps on both sides. Then i rivetet my steel plates on, for every 2 i also put a small piece of 1mm steel, i will bend the ends up, to create some suport for the roadwheels

[Neil Rochford]

Impressive work, 

I have been following your build with much interest. 

I agree with Sam and strongly suspect that your 2mm swing arms will bend at some point due to all the power your tank will have. swing arms need to cope with considerable forces and I would use 6x20mm mild steel as a minimum. the weakest point will be at the pivot.
keep up this very good effort.

Neil R

 

[Niels Erik Kristensen]

I think your right, so i will remake the arms in the week to come-Tomorrow night i will start making the wheels-They will be all plywood, with ball bearings.

[Niels Erik Kristensen]

Det lyder fantastisk-Hvor er du fra??

I just write a greting to a fellow Dane
Den mandag den 18. februar 2013 13.08.48 UTC+1 skrev S.Schramm:

Hi Niels Erik.

 

First off, your T34 project looks awsome, nice work.

I've been following the R/C tank combat site for a few years now, wanting to get started on a build my self.

I'll be posting my plans for my build soon. I need to deside wether to build a Hetzer, M4A3E8 or a M18 Hellcat.

Just wanted to let you know, there might be more danes starting to build Large scale tanks.

 

Søren Schramm.

[S.Schramm]

Den mandag den 18. februar 2013 17.15.09 UTC+1 skrev Niels Erik Kristensen:

Det lyder fantastisk-Hvor er du fra??

I just write a greting to a fellow Dane
Den mandag den 18. februar 2013 13.08.48 UTC+1 skrev S.Schramm:

Hej Niels Erik. Jeg bor nær Horsens, Jylland. Som sagt er jeg ikke kommet igang endnu, har været igang med at renovere gammelt hus de sidste par år, men planerne er der :D

Jeg regner med at kunne komme lidt igang med selve kampvognen i forsommeren, skal lige være færdig med et kælderprojekt først.. Jeg vælger nok en Hetzer som første build..

Jeg har en kammerat som også er med på ideen, han snakker om en Panther.. Men som sagt, jeg får lige lavet husprojekt færdig, så vender jeg tilbage til 1/6 skala tank.

       Selve ideen om tank battle med paintballs, lyder som en god måde at bruge en weekend dag på :D

       Du får lige min mail: ssr7...@gmail.com     Hvor er du fra i DK ?

      

      mvh Søren.

 

     Sorry about the Danish greeting guys.

     I Plan on announcing a build of a Hetzer sometime soon, I've been following this site for some time, and love the idea of RC tank battle..

 

[Niels Erik Kristensen]

You got mail!!!

 

Today i startet to make my suspensions arms stronger :-) I come up with a somthing i think will hold-Photos later.

[Niels Erik Kristensen]

10 road wheels are comming up :-)

[TyngTech]

Niels

You forgot to show all the sawdust from the wheel cutting!

The T-34 is coming along very nicely.

Steve Tyng

[Niels Erik Kristensen]

There are alot of sawdust-belive me. and a smell of burning wood ( old cutter )  And my ears are humming from the noise-But who cares, iam making a big tank :-)

[Neil Rochford]

I have a question , what is holding the discs together whilst you router them into circular wheels  ? And did you make a jig to hold all the parts of the wheel in line as they are assembled ? when ever I have attempted what I can see you are doing, me wheels have "wobble" built into them. I have had to do conriderable sanding afterwards to correct my mistake.

I think you might want to introduce some steel to your wheels since you have wooden wheels and metal track guides. the guides will "eat" the wheels within a short amount of time, of at least mine did when I built T051

I made this out of an old bathroom cabinet  -

http://rctankcombat.com/tanks/T051/019-large.jpg

http://rctankcombat.com/tanks/T051/020-large.jpg

Neil R

[Niels Erik Kristensen]

I will for start glue 3mm rubber on the wheels, and bend the guides a littel invards, so i hope to minimise the "eating". If that not enoug, i will add metal to the inside, of the wheels.

I glued all the big and smaal wood parts together, and i had them all on a 8mm threaded rod while the glue was drying-All 10 wheels on one threaded rod, and a nut in each end.

[Niels Erik Kristensen]

Now all wheels ar redy for paint-I have drilled 8 holes in each wheel, so i can fit a 4mm threaded rod trough them-To add strenght, ant i like the look of a lot of nuts in a wheel. I also put ball bearings in place.

[Niels Erik Kristensen]

A littel update-Now my wheels ar paintet, and i startet on gluing rubber on them.

I also made the rear wheel bearings

[Niels Erik Kristensen]

Now i got my new and stronger suspension arms in place. And are redy to put my traks on!!

http://www.youtube.com/watch?v=xFA5oy21Ryo

I also mowed my springs to the inside of the hull, to make the tracks closer to the hull on the outside!

[lo...@fieldofarmortanks.com]

Niels,
What do you use to "glue" your rubber belts to your wheels? I'm currently finishing a Panther/Jagdpanther project, and the rubber belts seem to not stay on the wheels. See video below:
http://youtu.be/UoU1RKHZ1z0
Cheers from Utah,
Loic http://www.fieldofarmortanks.com

[Derek Engelhaupt]

Both tanks looking good.  

Loric,

I think the JP needs a slight adjustment of the front suspension so that the front of the tank sits a little lower, but that's just my opinion.  I know it would make it harder to climb things, but it would make it look much more like the real thing.  I kinda have a problem with wanting my tanks to look too much like the real thing instead of a tank that gets hit with paintballs... :)

Neils,

Do you have a pic of one of the suspension mounts from the inside?  I couldn't see enough detail in the video to see how you did them.  Thanks.

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[Niels Erik Kristensen]

I use Rubber cement ( contact glue)

[lo...@fieldofarmortanks.com]

Hi Neil,

What about my question on rubber to plastic glue?

To answer your questions:
1. We purposely made the tank sink "backward". But this video was made with a 74lbs tank, while when all the equipment will be added, it will be closer to 150lbs. At that time, it will sit more "flat"
2. The suspension system is a "pending patent". I'm waiting for the patent number to be issued to start publicizing the way it works. It is VERY SIMPLE. Please remember that we are a "business". We are trying to take the "engineering" out of building fun...

Cheers from rainy Utah
Loic

[Niels Erik Kristensen]

In the photo, the rear are lower than the front! But its been taken before the springs was in place, and the tank are just resting on a pile of plywood.

The bottom are level now, with all the springs in place.

I will take some photos of the suspension, next time i build on my T 34/85 tank ( its not in my home, but are in a frends garage)

[Niels Erik Kristensen]

I dont no if my glue (contact adhesive /rubbercement) vill work on plastic-But cyanoacrylat glue will  !!

[Niels Erik Kristensen]

Now another update from Denmark: Today a made my tracks, and testet them on the tank. I also startet on the track tension on the front.

Next are the reduktion gear inside the hull. I also took some photos of the suspension, as requistet.

And made a video of a roling tank :-)

http://www.youtube.com/watch?v=7SyK918w-zY

[Niels Erik Kristensen]

I made a chance on the motors! The one that i wantet are still in backorder-So i got some replacement, they are bigger stronger, and more expensive-But i love them :-) And the best part, i alredy have them, so i can get on with the tank!!

Motors: http://www.hobbyking.com/hobbyking/store/__8490__Turnigy_4258_Brushless_Motor_800kv.html

[Niels Erik Kristensen]

Testing both tracks-And they fit!!!

[Neil Rochford]

Like it , now we want to see them motors fitted, that can take a while i know , nice progress.

Neil R

[Derek Engelhaupt]

Neil is pretty demanding.... :)  Just kidding.

Nice work.

Derek

On Mon, Apr 8, 2013 at 4:56 PM, Neil Rochford <Funky...@ntlworld.com> wrote:

Like it , now we want to see them motors fitted, that can take a while i know , nice progress.

Neil R

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[Niels Erik Kristensen]

Yes, and i have not forget what you wrote on januar 28!!

But you dont now me-When i say that i will do somthing-Then consider it done :-)   I especkt the motors to be in the tank, and running, in 2-4 weeks :-)

[Neil Rochford]

I might ask Frank to open a new section of the site called "What Neil expects" I have been spending large amounts of time teaching pre teenage tankers and as a consequence my manner maybe becoming somewhat condescending. Id like nothing more than to introduce such a regime to rctankcombat, whereas anyone lacking behind in construction, (in my opinion) will become my subject for criticism. obviously in a constructive manner, or some other manner of my choosing.
Any message dated 28th January (or any other date) predicting FTF progress was merely a prediction and therefor can not fall within the rules stated above.

Neil "Your leader has spoken you have two weeks" R

On Monday, April 8, 2013 3:16:15 PM UTC-7, Niels Erik Kristensen wrote:

Yes, and i have not forget what you wrote on januar 28!!

But you dont now me-When i say that i will do somthing-Then consider it done :-)   I especkt the motors to be in the tank, and running, in 2-4 weeks :-)

[Bill Byrnes]

That section can be placed right next to the "What everyone expects from Neil" section.   It will include all the criticisms we have of Neil (constructive of course).  If necessary, we can expand that section onto another internet server if the present capacity limit is reached.

 

Bill "Can hardly wait for my leader's instructions" B

From: Neil Rochford <Funky...@ntlworld.com>
 

[Niels Erik Kristensen]

Update from Denmark!!  I got my transmision redy, and 1 motor running-I only got 1 ESC for the moment, the other one are delayed in Chinise mail :-(

The ESC are not set right, at the moment, first i have to download the manual-I forgot it today.

But one motor are running and are looking good so far.

http://www.youtube.com/watch?v=3AcCV3T5HVs&feature=youtu.be

http://www.youtube.com/watch?v=LWcgQg4f8wU&feature=youtu.be

[Derek Engelhaupt]

Please don't take this as being critical because I think you are doing an excellent build.  Just keep an eye on those motor mounts.  They look a little weak.  If they start to flex at all, you will want to make them stronger.  Any flex will eventually lead to breaking.  Had it happen to me in my M113 build.

Derek

[Niels Erik Kristensen]

The motor mounts are not redy yet, they will have a top on too-With a 60mm fan, for cooling.

The top are 6mm plywood, and i use epoxy to glue it on with.

[Niels Erik Kristensen]

Now a littel chance in my plans for my tank!! The watercooling are out! The ESC`s that i want to use are not good enough, so now i will use ESC`s from cars-With reverse :-)

The problem are that the Boat esc`s that i have, dont have propotional reverse funktion-They just give full trottel when i will go reverse-I can chance that down to 25% full trottel-But that are not sutabel for a tank.

That "mal"funktion, cost me my first damage to my tank :-(  In a motor test, outside, the tank sudently go full reverse in to the wall!  But damage where small: the front aksel bent a littel (about 3 mm) I can fix that-No damage to the hull :-) and then the rear spocket, that are sitting on the rear main aksel, got loose. The spocket are secured to the aksel with 3 ps. of 5mm bolts, all countersunk about 2 mm into the aksel-They all got 2mm shorter!!  I think there are alot of power in my motors.

[Niels Erik Kristensen]

First testdrive-With a werry bad nokia phone kamera:

http://www.youtube.com/watch?v=yJlNC29xDcI

Now i will go flying RC planes for the sommer-And continiue my tank at the winter agin

[Niels Erik Kristensen]

Back to building my tank-The steel belts was not working, so i have now printet a new track on my 3d printer:

https://www.youtube.com/watch?v=D4WaRKr2D7k&feature=em-upload_owner

[Niels Erik Kristensen]

[Niels Erik Kristensen]

More wood and paint! Starting to look like a T 34/85 tank

[Niels Erik Kristensen]

First test run-3D printet tracks, and brushless motors-2*800 Watt
https://www.youtube.com/watch?v=A-zUjgHUVM8

Need a littel more tension on one of the tracks :-)

[neroc1]

Splendid work ! 
Its always a pleasure to see a new tank driving. Are you happy with your 3d printed tracks ?
Neil R 

[Niels Erik Kristensen]

Yes i am-They seems to work good!

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Date: Tue, 14 Jul 2015 02:52:23 -0700
From: funkyneroc%ntlwor...@gtempaccount.com
To: rctank...@googlegroups.com
Subject: Re: [TANKS] Re: T34-85 from Denmark

Splendid work ! 
Its always a pleasure to see a new tank driving. Are you happy with your 3d printed tracks ?
Neil R 

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