Author Topic: Near Chaos Robotics (Read 182142 times)

Somebody · « **Reply #120 on:** February 04, 2009, 07:56:09 PM »

I don't notice much of a difference between 1b and 1c, but I think that they are the best design.

MikeNCR · « **Reply #121 on:** February 04, 2009, 08:01:56 PM »

Quote from: Somebody;28180

I don't notice much of a difference between 1b and 1c, but I think that they are the best design.

The back part of the central portion is different, and the sides are moved forward.

MikeNCR · « **Reply #122 on:** February 04, 2009, 09:22:09 PM »

New info below.

MikeNCR · « **Reply #123 on:** February 05, 2009, 06:36:57 PM »

Solidworks claims this will weight 4.41lbs as shown

Edit:Image outdated

Some more room to cut weight.

Edited to adjust weight totals for most recent render.

Switching the front plates from Al. to HDPE saves .36lbs, switching the front sides gets another .12lbs

MikeNCR · « **Reply #124 on:** February 08, 2009, 10:43:50 AM »

Took Apollyon to the tunnels under RIT for some driving practice. I now have a rather torn up cardboard box that was used for target practice and a fair bit of dust on the bot. Gave it a fair bit of hard driving, well over 3min including lots of full stop to full speed runs, hard turns, sudden reversing and general abuse. Motors were cool enough to touch and the a123 pack was cooler.

Notable increases in acceleration and and general responsiveness over the old battery packs.

MikeNCR · « **Reply #125 on:** February 08, 2009, 04:09:06 PM »

Just ordered 4 Team Delta 18v dewalt drive kits, giving me two full sets.

zipdragon64 · « **Reply #126 on:** February 09, 2009, 07:28:42 PM »

ok heres that peace i was talking about it weights 13 ounces has .375 (3/8') shafts with .125 (1/8") keyways, its 2.75" wide (3.885" from shaft to shaft) and 3.025" long plate to back (3.605" from the shaft to the back) and 1.25" thick

MikeNCR · « **Reply #127 on:** February 09, 2009, 07:57:14 PM »

looks like it might have trouble handling the stress of the application. I'd need to look into it a lot closer to find out though, and as it is, I've got my whyachi-box that's holding up quite well.

zipdragon64 · « **Reply #128 on:** February 09, 2009, 08:44:57 PM »

ya im not sure how well it would hold up in combat but i was thinking of the belt driven hor spinner and that this might give it a lower profile

MikeNCR · « **Reply #129 on:** February 11, 2009, 09:26:01 PM »

Ordered 3 6 cell A123 packs for Mr. Self Destruct from Battlepack.com

Have:
Magmotor
Mag gearbox
Weapon bar
Speed Controllers(should get a spare or two, though)
Wire
Power switches(remake?)
Rx/Tx
Wheels(3 hubs not in use and tons of colsons)

On the way:
Dewalt drive motors
main batteries

Need:
Chassis
rx batt/bec

That should cover it unless I'm forgetting something.

MikeNCR · « **Reply #130 on:** February 15, 2009, 09:51:11 PM »

Chassis's down to 4.1lbs, green stuff is garolite, beyond that, just a decent bit of material removal.

Edit: Image outdated

Somebody · « **Reply #131 on:** February 16, 2009, 07:47:45 AM »

What is garolite?

System32 · « **Reply #132 on:** February 16, 2009, 08:04:09 AM »

Some kind of hard plastic.

MikeNCR · « **Reply #133 on:** February 16, 2009, 09:38:08 AM »

http://www.combots.net/wiki/index.php/Garolite

Quote

Garolite is a high performance type of fiberglass, composed of woven glass cloth in an epoxy resin media. Physical properties are similar to carbon fiber composite, although not as strong or stiff. It is much less expensive than carbon fiber and is easier to cut and form.

Garolite is not electrically conductive and does not block radio signals.

MikeNCR · « **Reply #134 on:** February 16, 2009, 05:22:24 PM »

Weight is down to 4.02lbs. Short of pocketing out the garolite, I'm running out of ideas for weight reduction.

Edit: Outdated.

Yes, I keep replacing the same image file on my server.

System32 · « **Reply #135 on:** February 16, 2009, 05:59:57 PM »

Make one of the metal plates thinner?

MikeNCR · « **Reply #136 on:** February 16, 2009, 08:59:59 PM »

A lot of the pieces are end-tapped, and I don't feel comfortable going under 1/4" al. for those pieces.

Just did a bit more work, chassis's down to 3.90lbs

MikeNCR · « **Reply #137 on:** February 17, 2009, 08:40:12 PM »

Decided to fit a few of the components in the assembly.

Somebody · « **Reply #138 on:** February 18, 2009, 06:13:16 AM »

Looks mean.

zipdragon64 · « **Reply #139 on:** February 18, 2009, 02:14:59 PM »

looks like a tank except i see those little wedge like peaces in the front getting bent (if anyone ever gets that close)