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Unread 06-08-2012, 04:46 PM
Metalcrafters Metalcrafters is offline
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pic: 207 2011 Chassis

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Unread 06-08-2012, 04:49 PM
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Re: pic: 207 2011 Chassis

In your experience, how well have 3D-printed wheels worked under stress? Have they ever broken in the middle of a match or anything like that?
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Unread 06-08-2012, 04:53 PM
Metalcrafters Metalcrafters is offline
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Re: pic: 207 2011 Chassis

Quote:
Originally Posted by josesantos View Post
In your experience, how well have 3D-printed wheels worked under stress? Have they ever broken in the middle of a match or anything like that?
This chassis had no issues at all, our 2012 chassis we cracked a few wheels when we hit the bump so we redesigned the wheel for the champs and they work like a charm. Even handled jumping off one of the bridges.
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Unread 06-08-2012, 04:58 PM
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Re: pic: 207 2011 Chassis

Did you just glue the tread to the wheel? From the picture, I can't see any other fasteners. Also, what's the life time on a printed wheel?
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Unread 06-08-2012, 05:03 PM
Metalcrafters Metalcrafters is offline
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Re: pic: 207 2011 Chassis

We designed three bosses into the wheel that was tapped for 10-24 button heads.

The wheels you are looking at have survived our 2011 season which was short and general practice driving even since. No cracks.

Our 2012 Champ version wheels have dings and gouges with not signs of damage.
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Unread 06-08-2012, 05:04 PM
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Re: pic: 207 2011 Chassis

Quote:
Originally Posted by Metalcrafters View Post
We designed three bosses into the wheel that was tapped for 10-24 button heads.

The wheels you are looking at have survived our 2011 season which was short and general practice driving even since. No cracks.

Our 2012 Champ version wheels have dings and gouges with not signs of damage.
What diameter wheel and how much did it end up weighing?

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Unread 06-08-2012, 05:10 PM
Metalcrafters Metalcrafters is offline
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Re: pic: 207 2011 Chassis

This set was 5" @ 6 ounces a piece.
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Unread 06-08-2012, 05:15 PM
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Re: pic: 207 2011 Chassis

What type of plastic is that and what type of 3d printer do yall have?
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Unread 06-08-2012, 05:19 PM
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Re: pic: 207 2011 Chassis

Sorry should have said this prior

We have a Uprint from Dimension that prints with ABS.
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Unread 06-08-2012, 05:27 PM
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Re: pic: 207 2011 Chassis

So I take it they stand up to sideways stress, ie getting t-boned? Were you able to easily cross the barrier multiple times? What about pushing matches?
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Unread 06-08-2012, 05:35 PM
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Re: pic: 207 2011 Chassis

Side loading and pushing had no effect.

Impact loads from hitting the bump across the open span of the spokes it what caused cracking. Just redesigned and never had an issue. We we able to hit the bump at full speed and pop right over it.
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Unread 06-08-2012, 07:47 PM
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Re: pic: 207 2011 Chassis

Edited.
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Last edited by Akash Rastogi : 06-08-2012 at 07:49 PM. Reason: Moved to other thread.
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Unread 06-09-2012, 12:03 AM
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Re: pic: 207 2011 Chassis

You guys have been building great 'bots for years in my opinion, was totally stoked to see you guys on Einstein.

You guys were also a $@#$@#$@#$@# steal of a 3rd with this bot at LA that year.
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Unread 06-10-2012, 11:55 AM
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Re: pic: 207 2011 Chassis

Quote:
Originally Posted by Metalcrafters View Post
Side loading and pushing had no effect.

Impact loads from hitting the bump across the open span of the spokes it what caused cracking. Just redesigned and never had an issue. We we able to hit the bump at full speed and pop right over it.
Do you have pictures of this design?

Pretty amazing to think that you didn't crack a wheel driving off that bridge.
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Unread 06-11-2012, 11:38 AM
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Thumbs up Re: pic: 207 2011 Chassis

Quote:
Originally Posted by slijin View Post
Do you have pictures of this design?

Pretty amazing to think that you didn't crack a wheel driving off that bridge.
Here's the link to the wheels. Our original wheels for this season were structurally very similar to the ones we used last year, the one you see mounted to the robot in this pic. I'll drop in another interesting shot as well.



That CRio placement was a little precarious, but it worked out.

Quote:
Originally Posted by AdamHeard View Post
You guys have been building great 'bots for years in my opinion, was totally stoked to see you guys on Einstein.

You guys were also a $@#$@#$@#$@# steal of a 3rd with this bot at LA that year.
Thanks Adam! That was my first year driving personally, and a lot of the things we learned that year got us as far as we did this year. I'll be entering your world as a mentor this year, and I know I've got plenty to learn from you.

Last edited by Botwoon : 06-11-2012 at 11:42 AM.
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