[WIP] Container Space Ship

[Milan]

1 minute ago, Mechbuilds said:

I don't have any option how to resize images. The site only lets me post a link that automatically converts into an image. 

You can resize them before posting in most image viewing programs, even in MS paint.
Or, you can use online hosting sites that provide resizing options, like Flickr or Bricksafe.

[Mechbuilds]

Oooh the parallellogram word explained it. (i'm Finnish so English is not my first language.)

No wonder i was having issues.. 

Well after trying to fit the mechanism, i think my best bet is just trying to get 4 small LA's 
It's just much much more compact and simpler.. 

I also was trying to figure out a single linkage worked by one gear that transfers the rotation into two vertical motions by basically lowering two legs straight down. 



This looks ideal:

'



EDIT:

i could also just be lazy and put these pins at the bottom as support legs:


Just like the containers have.

Edited January 27, 2018 by Mechbuilds

[Mechbuilds]

Apparently being helplessly hopelessly stuck in a dead end helps. 
(you guys were very helpful! Thanks!)

Guess what i rigged out guys! 








Do you know what this means?!? 

I can rig up a wormgear assembly for each leg That way all the weight will be supported on the legs instead of the axle. 
(The legs are there just as placeholders for now.)


All this head scratching and in the end, the solution is very very simple. 

Any suggestions on the outriggers them selves now that the gearbox is done?

Edited January 27, 2018 by Mechbuilds

[Lakop]

Well done for finding a solution. Look forward to seeing more work on it.

H

[LEGO Train 12 Volts]

Very nice project ...amazing theme!

[Mechbuilds]

I could use four of those new red big outrigger pieces. Since it now has vertically rotating gears on both sides, it could be easily done. 

[Mechbuilds]

Landing gear up:




Landing gear down:





View of the mechanism:








Problems found with this mechanism:
If you use the large motor to crank it while it's standing on it's own weight, the gears tend to click.. 
Cranking it slowly by hand doesn't have this issue. 
Problem can be fixed simply by beefing up the structure since the top parts are flexing outwards. 
Simply adding a beam behind the L shaped pieces would eliminate the problem.


But progress is being made. Yes!

[doug72]

8 minutes ago, Mechbuilds said:

Preoblems found with this mechanism:
If you use the large motor to crank it while it's standing on it's own weight, the gears tend to click.. 
Cranking it slowly by hand doesn't have this issue. 
Problem can be fixed simply by beefing up the structure since the top parts are flexing outwards. 
Simply adding a beam behind the L shaped pieces would eliminate the problem.


But progress is being made. Yes!

Check the 8T gears, I had the same clicking issue on a recent MOC and eventually found it was due to bent teeth due to overloading.  It was one of the latest design of strengthen 8T gear.

Edited January 27, 2018 by Doug72

[Mechbuilds]

Just now, Doug72 said:

Check the 8T gears, I had the same clicking issue on a recent MOC and eventually found it was due to bent teeth due to overloading.  It was one of the latest design of strengthen 8T gear.

8T gears are fine. It's the structure on the top worm gears. (The L beams) that flex outwards due to the overloading. 
This flexing causes the worm gear to jump the 8T gear. 

I'm going to deal with the issue by strenghtening the L beam pieces and modifying the part where the worm gears are connected so the L beams can't flap like wings. 

[TheNextLegoDesinger]

just did a fast calculation and as i see you have a worm-8th thought combo twice this gives a 1:64 ratio if i'm right. i think the problem is overstress, using a XL motor you get an output of 928 N.cm , you might be better to use an m motor, here you'll get 232.32 N.cm of toque and twice the speed. or you could use a L motor, giving 414.72 N.cm of torque and the same speed as the m motor.

this might just fix the cracking

[Mechbuilds]

11 minutes ago, TheNextLegoDesinger said:

just did a fast calculation and as i see you have a worm-8th thought combo twice this gives a 1:64 ratio if i'm right. i think the problem is overstress, using a XL motor you get an output of 928 N.cm , you might be better to use an m motor, here you'll get 232.32 N.cm of toque and twice the speed. or you could use a L motor, giving 414.72 N.cm of torque and the same speed as the m motor.

this might just fix the cracking

Drive shaft has:

12 tooth spinning a 20 tooth that spins a 12 tooth that spins a bevel gear 12 tooth that spins a worm gear that spins an 8 tooth that spins a worm gear that swpins an 8 tooth


By hand it's smooth until you reach the max and then it starts clicking. 
Very little force is required to spin the drive axle and the legs start to deploy very very slowly.

But it's extremely compact. 

Leaving this beast on it's legs will probably damage these parts: 


I should probably build a stand for it since it's already quite hefty. 

Edited January 27, 2018 by Mechbuilds

[TheNextLegoDesinger]

well, what you have there is a 1:106.688 ratio, so you might want to swap the XL for a L motor as you have 1546.98 N.cm. of torque with that XL motor, which might just be a little to much. with the L you get 691.34 N.cm.of torque

Greetz,
TNLD

 

calculations:http://gears.sariel.pl/

[Mechbuilds]

Not much progress have been made. Only that i swapped the smaller and larger gears so the legs would open up more quickly. 
Otherwise, i'm already thinking about disassembling it and building a carrier type starship. (The problem with this moc is that i lack the parts for more containers.) Also the ship is awkwardly shaped. 
I intend to disassemble this and make the carrier instead. 
(Don't worry guys, i'll revisit this container ship idea and build something different but similar.)

Feel free to copy these building ideas for your own future moc's. 

I would like to see more technic based star ships brought to our community. 
There is so much more options we can do from technic pieces instead of your traditional system built starships. 



So the carrier ship will have a panel of sorts that opens up and reveals many many fighters. 
At first, i need to design a small fighter that can be attached somehow. Building one from technic pieces is going to be challenging.