Author Topic: Heavyweight Robot (220 lbs) (Read 2616 times)

drgn006 · « **on:** June 05, 2009, 08:01:20 AM »

Going to build a heavyweight. What do you think would be good for a frame? 1/2" square tube steel? 1" square tube steel.... 2" square tube? I plan to use 3/8" steel as a wedge/rammer in the front. Is that enough?

What about size? Right now it will be about 8" tall, 48" long, 35" wide. 4 wheels 10.0" each (1" ground clearance).

As far as a drive system, I plan to use sprockets to gear down 4x NPC-2446 (About 3 hp total). This thing would be very fast, since these motors won't be geared down much (Pretty much as little as possible). I am actually a bit concerned that this is not enough power in the drivetrain. I've considered 4 of the NPC-1200... even 2 of the Black Maxs. The S28-150 is also something I'm considering.

As far as voltage, I've been thinking 36V, NiMh.

Appreciate any feedback.

Thanks!

R1885 · « **Reply #1 on:** June 05, 2009, 09:44:03 AM »

Your at the wrong place to ask.

Reier · « **Reply #2 on:** June 05, 2009, 09:49:12 AM »

Forum? }=|
And drgn006, I suggest talking to MikeNCR.

drgn006 · « **Reply #3 on:** June 09, 2009, 01:39:01 PM »

Update: Decided on a middleweight, 2 motors, 4 wheels. Frame with tires is about 45 lbs. Using 1" welded square steel tube, 10" rubber tires with custom steel hubs. Using sprockets and chain for the drivetrain. 2x 12V NiMh for 24V 3300mAh. 3/8" steel "plow" for a weapon. Haven't decided on the top/bottom/side armor. Most likely steel or 7075 aluminum.

I'll take what I learn from this to build the heavyweight for battlebots. Maybe they'll allow middleweights in the next one... I won't hold my breath.

Would appreciate any feedback from real builders...

roboman2444 · « **Reply #4 on:** June 09, 2009, 02:42:12 PM »

i only build insect class.
If you plan to weld the aurmor on, use steel.

R0B0SH4RK · « **Reply #5 on:** June 16, 2009, 03:39:02 PM »

Hmmm... French spambots.

I blame Naryar.

Reier · « **Reply #6 on:** June 16, 2009, 03:42:21 PM »

ermm

gtg >>

Naryar · « **Reply #7 on:** June 16, 2009, 04:03:47 PM »

Keep your blaming for the next time i'll out-wedge you.

090901 · « **Reply #8 on:** September 18, 2009, 07:47:26 PM »

Quote from: dep595er;67098

khoo yuer tch thai miir

Spambot, great, really great. //sarcasm

MikeNCR · « **Reply #9 on:** September 18, 2009, 08:14:59 PM »

Look at the book linked in this thread: https://gametechmods.com/forums/showthread.php?t=2480

Read it.

Understand it.

roboman2444 · « **Reply #10 on:** September 18, 2009, 08:30:10 PM »

Quote from: dep595er;67098

khoo yuer tch thai miir

spambot!

i would personally recomend this book also
http://www.amazon.com/Building-Bots-Designing-Warrior-Robots/dp/1556524595/ref=sr_1_1?ie=UTF8&s=books&qid=1253323730&sr=1-1

includes alot of stuff about pneumatics and hydrolics, also.
also a great physics book :)