At our August 9th meeting we covered the Water Balloon Challenge, which is now up to 8 groups. Details on our project page, but they seem to be performing so well that we concluded that the Greencastle Farmer’s Market display in early September should be a demo, not the actual competition, since the Greencastle square may not be large enough!
For our ‘show & tell’ portion Chris brought liquid nitrogen in a dewar for experiments. After explaining describing liquid nitrogen and where it comes from, we poured the -196°C (-320°F) liquid over the marshmallows that Alice had brought in. We also froze a banana to drive nails into a piece of wood and then tried lots of things that kids and the adults suggested. Some that worked and some that didn’t!
Freezing balloons was a big hit, the kids had tons of questions which you can hear and see in the balloon video that Brian H. took. For the coin collectors there, we showed how older copper pennies are more malleable at minus 200 degrees Celsius than the new copper plated zinc pennies – which shatter after hitting them with a hammer!
There’s another good regional event for science in Bloomington on 8/29, Makevention, along with some other events on our events page. Last year we took one of the shovercraft (shoveable hovercraft) to the Bloomington event and did demonstrations. It’s well worth the trip if even to just to look at what other people are doing.
Since we’re starting to look for projects after the Water Balloon Challenge, I can’t help but mention the Lexus created hoverboard that uses liquid nitrogen. I just watched a video (long version) on it, sort of outdid our shovercraft but a lot of more engineering in that design. Now that would be an awesome next project!
On Labor Day weekend we had our first public Shovercraft showing – what a great time for the kids!! A huge thanks to the Greencastle Farmer’s Market for their assistance. And for letting us shove the kids down Washington next to them while they were on Indiana Street downtown that Saturday.
All of the craft hovered, some of them maybe a little too well if you look through the pictures! The kids loved it & the part I really enjoyed was the excitement seeing the kids helping each other and showing those walking by how their craft worked, even letting some of the other kids see what it was like to ride a leaf blower powered hovercraft.
There was a little on-the-spot fabrication work needed on some of the craft, part of the experience, but they worked remarkably well. I’m setting up a photo album of photos, but there’s also a lot of pictures on the Farmer’s Market page and a fair number of pictures and even a video on Facebook from some of the people there.
We even took one of the craft down to the Bloomington Makevention later in the day and did some runs in their parking lot. Not as far as the twinkie cannon that was going off near our launch point, but still another fun event. Bloominglabs Makevention was an incredible event by itself, I’ll post more information on that event later.
Next up for Castlemakers: Pumpkin projectiles. Well we actually have more in mind than that, maybe some hydroponics & RC/electronics projects are being tossed around. Show up for our next general club meeting (9/28 @1:30 pm in the Community Room above Eli’s Books downtown) and find out more!!
The Castlemaker’s Shovercraft showing/demo
will be this Saturday (8/30) at the Greencastle Farmer’s Market on the square in Downtown Greencastle. These leaf blower powered hovercraft, built by our 9-11 year old Putnam county participants, will be on display a good portion of the morning – so stop by! We’ll fire a few up around 9:30 before the music at the Farmer’s Market starts at 10 am.
These hovercraft are being called them Shovercraft because they only have a hovering fan, not propulsion , so they have have to be shoved. Well and part of the upcoming competition will be landing the craft on a shuffleboard for points. I’m sure we’ll give demos several other times this Saturday, the kids are pretty excited about their craft. Look for us on Franklin street portion of the Market from 9-11 am Saturday.
The project update page can’t keeping up w/ flurry of activity this week, but there are some photos and a video of the work-in-progress so far.
Our hovercraft teams have been hard at work & we’ve got a 4th team that will be joining us at the upcoming event. Several teams now have prototype shovercrafts running, there are links off the project page. Our public showing/competition will be at the Greencastle Farmer’s Market in late August.
Quick reminder for the shovercraft teams that we’ll be meeting as a whole group again Wednesday August 13th, 7 pm, at the Southside Community Center (605 Crown Street).
We had our 2nd Castlemakers meeting upstairs in the Eli’s Books community room last week; it was the official shovercraft kickoff meeting. It started with a video of a simple home built ‘shovercraft’ someone built and then the kids discussed what might be needed to build one.
Then there was a small demo of a simple hovercraft made with a balloon, disposable water bottle, and an old audio CD (with lots of tape on it). The demo was a hit with the kids judging by the number of balloons used!!
The kids involved got to find out their team members (3 teams with now 4 kids each) and their adult mentor for the project who also helps them on the project. There are lots of possible designs and one of the first thing they’ll be deciding includes: what shape (circle? rectangle? boat shaped?), what type of ‘engine’ (or leaf blower), and chair/no chair. Plus lots of other items, including how to decorate it! Each person there got a notebook to draw and keep notes in – the young designers/makers took off from there.
Our next full group meeting will be on July 10th at 7pm to review how the designs are coming, although the individual teams will be meeting between now and then. We now have a goal for completed shovercraft and either a ‘who goes the furthest’ or hovercraft shuffleboard competition on August 16th or August 23rd – depending on our final location. There will be more information and updates later!!
The mentors have met after our last group meeting and we decided on a Shovercraft as our first group build project. It looks like there will be at least 3 groups of 3-4 kids building one, then we’ll have a competition/race in August.
Our next meeting is Thursday June 12 at 7pm in the Community Room above Eli’s Books just off the square downtown. Please feel free to join us, we have 4 mentors willing to give their time so we can investigate, design, and create these craft for the competition. Even if you haven’t been involved so far, you’re welcome to show up and have your 9-14 year old daughter/son participate in this youth-centered maker club event.
Keep watching our Projects page for more details on how the team builds are going & when we’ll have the challenge/competition for the groups in August.