This website uses cookies. By continuing to use our site you declare your agreement. More Information

Dear visitor, welcome to Kartonbau.de - Alles rund um Papiermodelle, Kartonmodellbau und Bastelbogen. If this is your first visit here, please read the Help. It explains in detail how this page works. To use all features of this page, you should consider registering. Please use the registration form, to register here or read more information about the registration process. If you are already registered, please login here.

exeno

Intermediate

  • "exeno" is male
  • "exeno" started this thread

Posts: 84

Date of registration: Feb 21st 2008

  • Send private message

1

Thursday, February 21st 2008, 1:21pm

GPM Challenger 2/1:25/RC conversion

Hello everyone, I come from Beijing , China.

This tank I Build from Oct,2007, original thread I posted on a Chinese Papermodel BBS -- www.cardmodel.cn, original thread at:

http://www.cardmodel.cn/viewthread.php?tid=557

And you can see a testrun video clip here:
http://www.youtube.com/watch?v=DE4csmI3V2w

Let me just give a preview of the sort of features first:Fully movable tracks and suspension, and a mobile turret with RC rotation and elevation. Working BB bullet launcher, and a laser gunsight, lights, smoke, real tank sounds...

Project Start, formers cut out, nothing special at this stage... yet. This Challenger model does not have internal structures, and so it great for RC conversion. Some formers have been modified to accommondate for the internal machinery.





Formers strengthened by superglue, to save the tank from falling apart during running



Chassis:












Space for main drive Motor



The motor, with some modifications to let it drive the wheels:



Test fit

This post has been edited 4 times, last edit by "exeno" (Feb 22nd 2008, 12:43pm)


exeno

Intermediate

  • "exeno" is male
  • "exeno" started this thread

Posts: 84

Date of registration: Feb 21st 2008

  • Send private message

2

Thursday, February 21st 2008, 1:24pm

Space have also been left out for the suspension system:



then moved on with the suspension...... Some hard work there









the axletree is screw cap of bicycle wheel spoke,I used an electric drill grind off the screw thread inside, and make inside diameter to 2.1mm.



Driver shaft, steel rod bought on purpose, 2mm diameter




exeno

Intermediate

  • "exeno" is male
  • "exeno" started this thread

Posts: 84

Date of registration: Feb 21st 2008

  • Send private message

3

Thursday, February 21st 2008, 1:26pm

...And springs, got them from ball-pens

















Spring force is about 300g each...



all suspensions






exeno

Intermediate

  • "exeno" is male
  • "exeno" started this thread

Posts: 84

Date of registration: Feb 21st 2008

  • Send private message

4

Thursday, February 21st 2008, 1:28pm

Moving on... Guide wheels































Drive wheel, strengthened it with epoxy and superglue




exeno

Intermediate

  • "exeno" is male
  • "exeno" started this thread

Posts: 84

Date of registration: Feb 21st 2008

  • Send private message

5

Thursday, February 21st 2008, 1:31pm

Now for the 12 wheels on the bottom...... (Not too furnished in the naming department, anyone tell me what they're called...?)







Tin solder wire, used as additional weight to fit into the wheels' rim






































exeno

Intermediate

  • "exeno" is male
  • "exeno" started this thread

Posts: 84

Date of registration: Feb 21st 2008

  • Send private message

6

Thursday, February 21st 2008, 1:32pm

These are the "Real" suspensions, but here it's just an ornament









Finishing the chassis



















This is BB bullet launcher, but a failed design, because this one is too weak, with barrel attached, distance is less than 5 meters, I can not accept, I'll find another solution instead.






MiZi

Intermediate

Posts: 215

Date of registration: Apr 29th 2005

  • Send private message

7

Thursday, February 21st 2008, 2:11pm

Outstanding! Really, I admire every builder, who build models functional! This is an extraordinary example of this. Keep them pics commin'!

Micha

Atze

Trainee

  • "Atze" is male

Posts: 145

Date of registration: Jan 10th 2006

Occupation: Momentan leider AL

  • Send private message

8

Thursday, February 21st 2008, 2:15pm

Hello
Thats is great =D> =D> =D> =D> @) @) @) @) :meister: :meister: :meister:

Best wishes
Atze

exeno

Intermediate

  • "exeno" is male
  • "exeno" started this thread

Posts: 84

Date of registration: Feb 21st 2008

  • Send private message

9

Thursday, February 21st 2008, 11:25pm

Sorry my English is not good enough to show all my building detials, if anyone have questions, feel free to ask me, I'll do my best to make an answer.


Guess what is this piece of nylon used for?



...Yes, it's for making the tracks. For real work, those tracks have to be strong, So I will reinforcing paper with this nylon sheet.



























This post has been edited 1 times, last edit by "exeno" (Feb 21st 2008, 11:39pm)


exeno

Intermediate

  • "exeno" is male
  • "exeno" started this thread

Posts: 84

Date of registration: Feb 21st 2008

  • Send private message

10

Thursday, February 21st 2008, 11:26pm

that was only the core... The tracks would have to be skinned...









Epoxy glue... This is expensive stuff, but when combined with nylon this becomes a fibre reinforced composite with strength matching that of glass fibres, necessary for the tracks.







Brass wire used as the axel, to save any corrosion...







Nice fit





--And now, for, morrrrrrrrre!!


exeno

Intermediate

  • "exeno" is male
  • "exeno" started this thread

Posts: 84

Date of registration: Feb 21st 2008

  • Send private message

11

Thursday, February 21st 2008, 11:28pm

I completed the track, finally, after 1 month's worth of work......... and painting them. Black marker and pencils couldn't do, so I opted to using acrylic diluted with ethanol





160 pcs total



Teeth, sticking to the original design is not good enough






exeno

Intermediate

  • "exeno" is male
  • "exeno" started this thread

Posts: 84

Date of registration: Feb 21st 2008

  • Send private message

12

Thursday, February 21st 2008, 11:30pm

So I'll reinforcing them with copper wire and epoxy







But for now, anti-skid panels, this time made with rubber sheet!





Rubber deforms during cutting, so I had to find matching pairs to glue on each section of track with epoxy......... Puzzle time!


exeno

Intermediate

  • "exeno" is male
  • "exeno" started this thread

Posts: 84

Date of registration: Feb 21st 2008

  • Send private message

13

Thursday, February 21st 2008, 11:31pm

An army of... tracks?!



Attaching the teeth, yes this is copper wire.





Finally...













Test run, the first two cycles proved to be a bit rusty, but after that things begin to run smoothly. --Can run over cigarette boxes and TV remote.

exeno

Intermediate

  • "exeno" is male
  • "exeno" started this thread

Posts: 84

Date of registration: Feb 21st 2008

  • Send private message

14

Thursday, February 21st 2008, 11:42pm

A shot of some RC equipment, those are for 1/16 tanks, so many of them won't fit... Some serious scratchbuilding ahead...




zec

Professional

  • "zec" is male

Posts: 1,570

Date of registration: Oct 22nd 2006

  • Send private message

15

Friday, February 22nd 2008, 12:02am

8o *speechless* =D>
LG
Michael

  • "Peter P." is male

Posts: 3,588

Date of registration: Feb 22nd 2006

Occupation: Garagengnomhasser

  • Send private message

16

Friday, February 22nd 2008, 12:20am

absolutely outstanding artwork!!!!
=D> =D> =D> =D> =D>


Ist Rechtschreibschwäche und grenzenlose Blödheit abmahnfähig?

René Pinos

3,1415926535....

  • "René Pinos" is male

Posts: 6,764

Date of registration: Nov 6th 2005

Occupation: Indschinör

  • Send private message

17

Friday, February 22nd 2008, 12:21am

Nihao exono,

I think you do not have to take care about the energy consuption because for sure it will be not a toy like the normal used platic models. You are intent to build a realistic tank model with kinetic function of the chains, the turret and the cannon motion. Therefore the accumulators might selected much smaller. Try to use Lithium-Polymere-Cells which have a higher energy density with a tenth of the dimensions.

Good Luck

René
Wer Bier nicht liebt und Weib und Knödel der bleibt ein Leben lang ein Blödel

jb1963

Trainee

  • "jb1963" is male

Posts: 151

Date of registration: Jul 12th 2006

  • Send private message

18

Friday, February 22nd 2008, 1:38am

phantastic Challenger challenge @)

  • "Glue me!" is male

Posts: 1,966

Date of registration: May 21st 2006

Occupation: Heilpädagoge, Jazzpianist, Cartoonist

  • Send private message

19

Friday, February 22nd 2008, 2:14am

Ouch!!!

This is SOMETHING!! Very creative, very disciplined, very great!

I AM IMPRESSED!!!
Dauerbaustelle: Prinz Eugen
Etwas Fertiges: Mikro-Neuschwanstein
Mit guter Chance auf Fertigstellung: Die Prager Burg

bernie

Intermediate

  • "bernie" is male

Posts: 425

Date of registration: May 18th 2005

Occupation: warehousing

  • Send private message

20

Friday, February 22nd 2008, 7:48am

Very good work! My admiration, but to be honest, I am little bit affraid for the condition of paper to survive such movements. My deepest respect for working parts of model, since I am the one who glues everythinggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggg /like my finger to keyboard :D
It is normal to own ORIGINAL

lriera

Intermediate

  • "lriera" is male

Posts: 218

Date of registration: Nov 3rd 2007

  • Send private message

21

Friday, February 22nd 2008, 8:08am

Very, very, very impressive work. Please keep going.

Thank you.

exeno

Intermediate

  • "exeno" is male
  • "exeno" started this thread

Posts: 84

Date of registration: Feb 21st 2008

  • Send private message

22

Friday, February 22nd 2008, 9:54am

While coming up (or, trying to come up, at least) with a solution, I went on to work on the light system.

Hi-intensity LED



Main Light



Aluminium foil



Black acrylic paint on the inside, to prevent light leaking out






exeno

Intermediate

  • "exeno" is male
  • "exeno" started this thread

Posts: 84

Date of registration: Feb 21st 2008

  • Send private message

23

Friday, February 22nd 2008, 9:55am

Transparent cover







...Lights, camera, action! A mere 3 volts gives an extremely bright light...





A small machine gun... able to rotate in 2 ways! But sorry no BB for this one...








exeno

Intermediate

  • "exeno" is male
  • "exeno" started this thread

Posts: 84

Date of registration: Feb 21st 2008

  • Send private message

24

Friday, February 22nd 2008, 11:58am

To all:
Thanks for all the encouragement, I'm delighting in those words that you give :D

To René:
I have finished batteries part, ar last I choose 6 AA size Ni-MH rechargeable batteries, it's fits exactly.And this battery is 2300mAh, can make the Tank run more than an hours.

To bernie:
Thanks for your care, I also warried about the durability. So I have to make many reinforcement to some important parts, such like driving wheel, guide wheel, etc.you will see those in my succeeding photos :)

Sorry I needs time to translate my work process into English, but you could see my tank's test run video clip ahead of my photos :)

Here is the video:
http://www.youtube.com/watch?v=DE4csmI3V2w


Best Regards
Exeno

This post has been edited 1 times, last edit by "exeno" (Feb 22nd 2008, 12:46pm)


Wolfgang Pesek

Moderator - Luftfahrt

  • "Wolfgang Pesek" is male

Posts: 3,878

Date of registration: Oct 6th 2006

Occupation: EDV-Fuzzi

  • Send private message

25

Friday, February 22nd 2008, 1:11pm

I just watched your video :

Man that´s awesome !!!

I truly salute you !

=D> =D> =D>

best regards,
woppy
In principio erat glutinis Gründungsmitglied der HobbyModel-Gang und Luft46-Gang Den Kartonbauer in seinem Lauf, hält weder Bogen- noch Klebermangel auf!

jb1963

Trainee

  • "jb1963" is male

Posts: 151

Date of registration: Jul 12th 2006

  • Send private message

26

Friday, February 22nd 2008, 9:38pm

8o it even shoots ...

great! I believe the cardboard - hardend - could last a while. The build is an unbelievable work! everything is working and without using awful expensive components.
Comparing to the "normal" model building community where the builders by hundreds of special parts you*re a real master! :prost:

The only thing: you should try to get this tank much slower ...

bernie

Intermediate

  • "bernie" is male

Posts: 425

Date of registration: May 18th 2005

Occupation: warehousing

  • Send private message

27

Saturday, February 23rd 2008, 1:02pm

My deepest respect =D> =D> =D>
It runs, it shoots, it is GREAT @) @) @)
It is normal to own ORIGINAL

lriera

Intermediate

  • "lriera" is male

Posts: 218

Date of registration: Nov 3rd 2007

  • Send private message

28

Saturday, February 23rd 2008, 8:45pm

It is marvellous. I am very impressed. Please show us the building process.

Thank you.

  • "Glue me!" is male

Posts: 1,966

Date of registration: May 21st 2006

Occupation: Heilpädagoge, Jazzpianist, Cartoonist

  • Send private message

29

Sunday, February 24th 2008, 2:23am

I just watched the video, rated it and posted the first comment. I'm simply amazed...
Dauerbaustelle: Prinz Eugen
Etwas Fertiges: Mikro-Neuschwanstein
Mit guter Chance auf Fertigstellung: Die Prager Burg

exeno

Intermediate

  • "exeno" is male
  • "exeno" started this thread

Posts: 84

Date of registration: Feb 21st 2008

  • Send private message

30

Wednesday, April 30th 2008, 2:34pm

Sorry for waiting so long...

Simpler lights at front:



...But the back lights really takes the cake... The LED's needed to be trimmed to fit.













Light





This post has been edited 1 times, last edit by "exeno" (Apr 30th 2008, 2:38pm)


exeno

Intermediate

  • "exeno" is male
  • "exeno" started this thread

Posts: 84

Date of registration: Feb 21st 2008

  • Send private message

31

Wednesday, April 30th 2008, 2:39pm

Now comes the smoke generator, pump is too big, so I had to replace it with a small fan... Let's leave that till later





Armour panels... These grazes the ground often, so can't be made with paper.









More armour panels... This time it's paper for sure


























exeno

Intermediate

  • "exeno" is male
  • "exeno" started this thread

Posts: 84

Date of registration: Feb 21st 2008

  • Send private message

32

Wednesday, April 30th 2008, 2:40pm

...Finally, the instrument of destruction has arrived......
This!



This stuff is used on Japanese electric airsoft gun, so...
Specs: 104x50x26 mm, operating under 7.2 Volts, operation current 6.6 A... Yes that's right, Amps, not milliamps! Projectile is 0.2g BB bullets, nozzle velocity can reach 90 m/s! Penetrates a beer can in a single shot!
And guess the firing rate? more than 10 rounds per second, yes per SECOND!

But since the way it's arranged doesn't fit the turret, extensive modification is needed once again......... And the vibration during firing could rip the turret itself to pieces, so the turret must be extremely strong...



Hop-up system











Strengthened by epoxy from inside... Absolutely no defect tolerated



Shaft is also made to be the maximum strength...



Looks dirty now, but it'll have a paint job in the end ^^


exeno

Intermediate

  • "exeno" is male
  • "exeno" started this thread

Posts: 84

Date of registration: Feb 21st 2008

  • Send private message

33

Wednesday, April 30th 2008, 2:40pm

Turret, the base is 2 layers of 1mm cardstock.



Tracks to restrict movement...





The bullet feeder, with spring inside














exeno

Intermediate

  • "exeno" is male
  • "exeno" started this thread

Posts: 84

Date of registration: Feb 21st 2008

  • Send private message

34

Wednesday, April 30th 2008, 2:41pm

Motor to drive the feeding mechanism







Looking great, but the turret's base has been enlarged by 5 mm radius to fit the entire mechanism...

Testfire, result in just FIVE seconds!!! Shells fly straight in 30 metres range, but after that still carries a great momentum. If shooting against wall, the BB bullets will just shatter to dust...



A bad injure... It happened when a small part he was cutting suddenly decided to give way, and so the razor went on to slice through a good portion of the thumb... A nice number of stitches and a lovely visit to the hospital...... It might be that God isn't allowing such a deadly land weapon to be born.............. A picture is worth a thousand words, guess I don't need to remind about taking extra care with knives.



Knife with blood...


exeno

Intermediate

  • "exeno" is male
  • "exeno" started this thread

Posts: 84

Date of registration: Feb 21st 2008

  • Send private message

35

Wednesday, April 30th 2008, 2:42pm

With hand injured, I can not do any hard work, so I can only make some correction to past work.

first, I refined feeding system.



























Final Ver.


exeno

Intermediate

  • "exeno" is male
  • "exeno" started this thread

Posts: 84

Date of registration: Feb 21st 2008

  • Send private message

36

Wednesday, April 30th 2008, 2:43pm

Strengthen of driven wheel







Fill with epoxy











A new motor of high power



motor for turret up an down, with speed down gears



Turret rotation mechanism


























exeno

Intermediate

  • "exeno" is male
  • "exeno" started this thread

Posts: 84

Date of registration: Feb 21st 2008

  • Send private message

37

Wednesday, April 30th 2008, 2:44pm

Body framework













test fit



DIY single shot and feeding control electrocircuit.





Connection part













Smoke generator



With this hole I can refill smoke oil



Turret rotation motor








exeno

Intermediate

  • "exeno" is male
  • "exeno" started this thread

Posts: 84

Date of registration: Feb 21st 2008

  • Send private message

38

Wednesday, April 30th 2008, 2:45pm

Driver's door, with main power switch and recharge connector

















Now the Tank can make some actions.

1 user apart from you is browsing this thread:

1 guests

Social bookmarks