Author Topic: Team Random Parts (Read 30427 times)

Stagfish · « **Reply #20 on:** April 01, 2010, 12:03:28 PM »

TX recommended this for me: http://cgi.ebay.co.uk/2x-Marine-50A-Speed-Controller-ESC-for-RC-Boat-boot_W0QQitemZ160370244242QQcmdZViewItemQQptZUK_ToysGames_RadioControlled_JN?hash=item2556cfba92

SKBT · « **Reply #21 on:** April 02, 2010, 08:48:29 PM »

Alright here is some advice.

Read Kickin Bot By Grant Imahara. (Guy from Mythbusters). Good advice for any builder.

Don't use drill batteries. They take way to long to recharge. Check out some NICADS http://www.robotmarketplace.com/products/batteries_battlepacks_nicad.html I'm not saying you should buy from there because of pricing but it is worth a check.

Motors: Two 12 volt motors might be a little skimpy for a Featherweight I know guys who use two drill motors on their 12lbs bots. I'd say at least 4 motors if you dont have an active weapon. I run 4 18 volts and Shish can push me. (I weigh 160 lbs)

Speed controllers: Vantecs are awsome!! They are an all in 1 speed controller for drive. I use a RFDR 22 in Shish-Kabot. http://vantec.com/acatalog/spdcat.html (The RFDR 21 should be fine for your purpose)

UHMW plastic is a great construction material but very heavy.

What kind of wheels are you planning on using? 4-5 inch wheels will get you about 10-14 MPH (I don't know the specs of the motors just guessing based on other bots) If you go bigger you run the risk of stripping the gears in the gearbox. (I know from experience)

Do you plan to have an active weapon on planned for that? If it is just a pusher you might want to consider a wedge bot.

Any questions just let me know and good luck!

Stagfish · « **Reply #22 on:** May 08, 2010, 11:54:49 AM »

Removed that design and went for something a little easier, I've just finished the chassis and I will post pics soon!

Reier · « **Reply #23 on:** May 08, 2010, 02:21:49 PM »

It's spelled scorpiOn. :P

Stagfish · « **Reply #24 on:** May 16, 2010, 05:08:09 AM »

My ant now

And motor one is done for my FW!

JoeBlo · « **Reply #25 on:** May 16, 2010, 05:53:06 AM »

heeeyyyy something I know stuff about :P R/C car stuff to be exact

do I read 21 turn on that motor ? also im interested on your battery charger and battery life LOL

Badnik96 · « **Reply #26 on:** May 16, 2010, 06:39:03 AM »

That battery/wires are hecka exposed on the AW

SKBT · « **Reply #27 on:** May 16, 2010, 12:37:22 PM »

Stag: Motor looks way too small and doesn't have a gearbox to make the output RPMs usable. You really might want to invest in using 18 Volt drill motors like these. http://kitbots.com/product.sc;jsessionid=3C124443C74D993BADBED88DDC5CEFAD.qscstrfrnt02?productId=6&categoryId=1

Or motors like these http://banebots.com/

Play around with this to try to find the best motor/wheel combination that you can afford.
http://members.toast.net/joerger/squid/newtorquecalc.htm

I also would try to stay away from RC car/truck parts. They are designed to move a 3lbs car not a 30 lbs combat robot. The amp draw on the Speed controller would be too great and it will fry.

I recomend Vantec speed controllers http://vantec.com/acatalog/spdcat.html

They have single stick mixing so you drive with one joystick on your controller and you only need one vantec to drive up to 4 motors. (2 each side) You either need a RDFR 21 or a RDFR 22.

Also ditch the RC car battery because they charge slow weigh a lot have low voltage (7.2volts or less) and dont have much capability.

Thyrus · « **Reply #28 on:** May 16, 2010, 12:43:01 PM »

Does it use DSA?

Naryar · « **Reply #29 on:** May 16, 2010, 01:47:57 PM »

Quote from: Thyrus on May 16, 2010, 12:43:01 PM

Does it use DSA?

Ha, ha, ha, ha, ha, ha, ha, ha.

Jonzu95 · « **Reply #30 on:** May 16, 2010, 02:44:03 PM »

Lol'ed.

JoeBlo · « **Reply #31 on:** May 17, 2010, 06:44:44 AM »

Quote from: Shish-kabot on May 16, 2010, 12:37:22 PM

They are designed to move a 3lbs car not a 30 lbs combat robot. The amp draw on the Speed controller would be too great and it will fry.

My Traxxas Monster Truck is a bit more then 3lbs but has a much bigger ESC then that... my current drive motor is the max size for it (22,000 to 23,00RPM geared to drive) so I would say that ESC may not handle an RC of that size...

its probably a more suited to something like an AW set up, I would suggest (if you want to use R/C stuff) Venom R/C Batteries have a good power charge time ratio but the weight would be an issue.

I spent a bit over $100 for my ESC.. but I paid a bit more for a waterproof version (something you wont need to for a robot)

Zog · « **Reply #32 on:** June 19, 2010, 08:08:50 AM »

Quote from: Stagfish on May 16, 2010, 05:08:09 AM

And motor one is done for my FW!
(Image removed from quote.)

BUMP

I would suggest that you use a more powerful drill motor than that, as it won't be able to turn a 13kg robot, even running it on 12V (trust me, I tried it, the motor blew).

Also, is it a s/c for each motor? As that one looks underpowered.

And what is your budget for the feather?

Stagfish · « **Reply #33 on:** July 26, 2010, 02:58:41 AM »

The newest Ant!
Ace

Strengths: Very Fast
Weapon: Aluminium Spike
Weaknesses: Reliabilty problems, Can only turn right.
Drive: Geared basic 1.5 V motor
He can make holes in cardboard but it's main weapon is probabley its speed.

G.K. · « **Reply #34 on:** July 26, 2010, 03:05:20 AM »

I have one of those cars.

Stagfish · « **Reply #35 on:** July 26, 2010, 03:06:43 AM »

They work well

JoeBlo · « **Reply #36 on:** July 26, 2010, 05:06:15 AM »

may I suggest a better attachment method then what appears to be sticky tape.

if you doing this as a non competitive hobby I would use industrial glues froma hardware store.. you can get some strong enough to hold 50kg, makes a lot better attachment and can be cut away with a knife if need be.

Stagfish · « **Reply #37 on:** July 26, 2010, 10:23:44 AM »

The spike is attached with industrial glue from a hardware store, the tape just got stuck there and I'm wasnt bothered to take it off.

Stagfish · « **Reply #38 on:** August 28, 2010, 01:54:36 PM »

Scutlet V2 now has a spring powered flipper! I will post pics sometimes.

Sparkey98 · « **Reply #39 on:** August 28, 2010, 01:56:08 PM »

MIne was a non competitive hobby but I still got trashed.

ANyway nice bot stag.