Gravity 5

also moved out of competitors :)

I've started with gathering all of the parts I still had :

http://www.wjweb.nl/gravity5/IMAGE_125.jpg


next, piling up the parts to see what shape the robot should be :

http://www.wjweb.nl/gravity5/IMAGE_129.jpg


was thinking about making G5 a little extreme :

http://www.wjweb.nl/gravity5/IMAGE_130.jpg


But I didn't :)
Changed the way I normally build, this time I started with a hardox baseplate, 460x800mm. Fitted the gearboxes + motors and gave the ram + buffertanks a place

http://www.wjweb.nl/gravity5/IMAGE_142.jpg


Made a battery box, and sort of laid out the position of the co2 bottles :

http://www.wjweb.nl/gravity5/IMAGE_143.jpg

http://www.wjweb.nl/gravity5/IMAGE_144.jpg

some hardox stuff added, once again, sorry for the bad photo's :(

http://www.wjweb.nl/gravity5/IMAGE_145.jpg

http://www.wjweb.nl/gravity5/IMAGE_146.jpg

Loving it! Is there an estimated completion time you can make? :D

No idea when it's finished :)

Some more work done :


Made a bottle cradle, that's removable so I can get to the batteries and the speedcontroller beneath the bottles :

http://www.wjweb.nl/gravity5/IMAGE_182.jpg


and how it fits on the robot :

http://www.wjweb.nl/gravity5/IMAGE_183.jpg


and with the bottles in place :

http://www.wjweb.nl/gravity5/IMAGE_184.jpg

i like the bottle tray idea. Pretty clever.

Neat. :) Have to agree with Leo, the bottle tray is pretty spiffy.

aaaand just ordered a bunch of anderson links and cables and connectors for the wiring of G5 :)

resized the pictures and added this new post because the board does not auto-resize and won't allow me to edit old posts :

http://www.wjweb.nl/gravity5/grav001.jpg

http://www.wjweb.nl/gravity5/grav002.jpg

http://www.wjweb.nl/gravity5/grav003jpg

http://www.wjweb.nl/gravity5/grav004.jpg

http://www.wjweb.nl/gravity5/grav005.jpg

http://www.wjweb.nl/gravity5/grav006.jpg

http://www.wjweb.nl/gravity5/grav007.jpg

http://www.wjweb.nl/gravity5/grav008.jpg

http://www.wjweb.nl/gravity5/grav009.jpg

http://www.wjweb.nl/gravity5/grav010.jpg

http://www.wjweb.nl/gravity5/grav011.jpg

http://www.wjweb.nl/gravity5/grav012.jpg

love your style of construction if I made a flipper I'd make it in the same way

Normally I make a box-section frame first, and then add armor, but this time I thought I'd try it this way :)

its grungineering at its best, almost looks like you have an idea of what you want to build but not drawn it (sorry not ment to sound like a bad thing if it does) I wish I built my robots like that (heavyweight anyway) it creates a unique look keep it up, its a great start

Every robot i have ever built has had no drawings or plans or cad drawings. Idea in my head and get the welder out. Job done

Almost the same with me, its piling up the parts and then start welding.

This one took a bit more time though, with laying out the parts like this and trying different layouts. This kind of building DOES make sure everything fits though ;)

its a great way to build, beats calculating deflection angles, angular velocity, kinetic energy, mechanical stress points and traction requirements, only for it at some point to need repairing on the spot.

or maybe i should learn to make better robots

I like the way its going, keep posting pics WJ

updates !!!

fitted the rear hinges, and the first few centimeters of the flipper arm.
Also made a lid for the rear side of the bot.

http://www.wjweb.nl/gravity5/DSCF0623.jpg

http://www.wjweb.nl/gravity5/DSCF0624.jpg

my dad builds the same was as u and shane (no computer drawings) must be all ur old ages - sayin that my dads the big 50 next xmas day HA very old


WJ, u need a bigger ram :)

I just love the fact that there's a strip of masking tape going across the top of the ram, as if it will stop 1000kg or more of thrust should the ram accidentaly fire :P
I know that's not what it's actually for but it just quite funny :)

more grungineering ;)

looks evil already ! I think its a bit too high, but you just can't fit a 20cm ram + a 60x30x3mm box section flipper arm + a sloped robot inside a low or short profile :(
but heres the pics :)

http://www.wjweb.nl/gravity5/DSCF0627.jpg

http://www.wjweb.nl/gravity5/DSCF0628.jpg

http://www.wjweb.nl/gravity5/DSCF0630.jpg

Managed to make te robot alot shorter, although the angle of the slope went up, we'll she how she does in battle ;)

http://www.wjweb.nl/gravity5/IMAGE_219.jpg

http://www.wjweb.nl/gravity5/IMAGE_221.jpg

http://www.wjweb.nl/gravity5/IMAGE_222.jpg

i best get some work done you are beating me in the build diary wars mate

I did exactly the same thing with the arm on Apocalypse, but im planning to revert to the original design as it made the ratio to the pivot wrong so the arm was too short. I would go longer, but then my system isn't as refined as yours will be im sure.

you calling this refined ? :)

If it doesn't work, making a new flipper arm wont be the end of the world.
Also, the ram currently has an effective stroke of 165mm, and the pivot:arm ratio is about 1:3, and that worked pretty good on my previous robot. Might not be as spectacular, so no robots getting stuck in the roof of the arena, but it will still tip them over again and again and again :)

Looking good, William :)

wheelguard :

http://www.wjweb.nl/gravity5/IMAGE_223.jpg

what it looks like almost finished :

http://www.wjweb.nl/gravity5/IMAGE_224.jpg

and with the flipper up :

http://www.wjweb.nl/gravity5/IMAGE_225.jpg

Looking Fab WJ

its looking pretty good, im liking it

sticking with the go kart wheels then?

yeah, the gearboxes are for that size wheels, so sticking with it.
Also, pneumatic tires take alot of the crashes etc out of the chassis...

Too sweet for words, WJ. :D

Can't wait to see it self right !

It should pivot around the back end because of the weight, but I don't know before I try :)

I can see it beating mute's record !!!!

ok, G5 back on the workbench again, with a little less then 4 weeks to go before RIAT :)
http://www.wjweb.nl/gravity5/DSCF0857.JPG

http://www.wjweb.nl/gravity5/DSCF0858.JPG

Because of all the enthousiastic replies another update :

started on the electronics

http://www.wjweb.nl/gravity5/DSCF0859.JPG

http://www.wjweb.nl/gravity5/DSCF0861.JPG

and, the lamps light up, so it seems to be working ;)

http://www.wjweb.nl/gravity5/DSCF0863.JPG

first pneumatic startup of gravity 5 :

http://www.vimeo.com/13015805

OMG the size of that ram :shock: :shock:

woohoo indeed :shock:

That thing is going to be killer. :shock: Nice job! :D

Nice. :)

changed robot / flipper arm a bit...

foto's are links, because forum doesnt do auto resize ;)

http://www.wjweb.nl/gravity5/DSCF0945.JPG
http://www.wjweb.nl/gravity5/DSCF0946.JPG
http://www.wjweb.nl/gravity5/DSCF0947.JPG
http://www.wjweb.nl/gravity5/DSCF0948.JPG

So how many times are you going to launch opposing robots into the roof, William? :rofl:

it's not that strong i think, we'll see ;)