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Author Topic: Pair of Baby Ringmasters  (Read 25135 times)

Offline Jeremy Chinn

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Pair of Baby Ringmasters
« on: November 19, 2023, 06:49:16 PM »
For the recent Ringmaster Flyathon, I built a pair of Baby Ringmasters for my son and I to fly. This would be his first model (yeah, kinda crazy choice in hindsight) and my first CL model in probably 15 years.

I started by tile printing the plans off the Outerzone website. I printed a couple sets so I could use a set for templates. I then stack cut all my parts (for two builds) on my jigsaw and finish sanded them.

From there, I was able to frame up the first one very quickly. The second build was a little quicker as I'd just finished one. At that point, I had two framed up and finish sanded in two nights of work.

Offline Jeremy Chinn

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Re: Pair of Baby Ringmasters
« Reply #1 on: November 19, 2023, 06:56:50 PM »
Next up, I moved to covering and finishing. I've always been more of a film covering guy, so these were covered with partial rolls of Monokote I've got left in my stash.
This also seemed more appropriate for the abuse they are going to see.
In all, I had them ready to fly in 5 nights building after work (excepting a little time for soccer practice).
Power came from a Cox TD.049 and a Medallion. Both fed by 1/2oz tanks.

Offline Jeremy Chinn

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Re: Pair of Baby Ringmasters
« Reply #2 on: November 19, 2023, 07:01:30 PM »
We made it to the flyathon and had a great time. Though it was pretty windy, we got a bunch of flights in on both planes.
I have them on 35ft spectra right now, but want to try them on 40-42ft as well.
My buddy Lester had the honor of the maiden flight on the purple/silver plane.
Finished weight was about 6.5ozs for each.

Offline Dave Hull

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Re: Pair of Baby Ringmasters
« Reply #3 on: November 19, 2023, 07:02:33 PM »
Nice! I especially like the Purple Pilot Eater! The Medallion is an excellent choice for a very capable plane. Hope you get lots of flights out of your "one-week miracles...."

The Divot

Offline john e. holliday

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Re: Pair of Baby Ringmasters
« Reply #4 on: November 19, 2023, 09:29:19 PM »
Great to hear you guys got your flights in.   Planes look great also. D>K
John E. "DOC" Holliday
10421 West 56th Terrace
Shawnee, KANSAS  66203
AMA 23530  Have fun as I have and I am still breaking a record.

Offline Jim Svitko

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Re: Pair of Baby Ringmasters
« Reply #5 on: November 20, 2023, 11:03:29 AM »
That takes me back in time.  As kids, we had a blast with those Baby Ringmasters, Baby Flight Streaks, Lil Jumpin' Bean, etc.  Cox Golden Bee, a pint of fuel, and spend a few hours on a Sunday afternoon having a good time.

Offline Andre Ming

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Re: Pair of Baby Ringmasters
« Reply #6 on: November 21, 2023, 07:38:04 AM »
Very nice builds! I suspect they flew good, too.

Is that translucent purple covering "Ultra Coat"?

Andre
Searching to find my new place in this hobby!

Offline Jeremy Chinn

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Re: Pair of Baby Ringmasters
« Reply #7 on: November 21, 2023, 08:51:32 AM »
Jim, I had always wanted a Jumping Bean!

Andre, it might be Ultracote or Monocote, I donít remember which.

Offline ralph stutes

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Re: Pair of Baby Ringmasters
« Reply #8 on: May 12, 2024, 01:37:37 AM »
Hello,

I am new to this forum, and was just browsing and found this topic.  I saw this topic, and thought I'd introduce myself and throw in a photo of my Baby Ringmaster that I just finished building.  A am excited to be a part of the community and hope I can be of help.

Offline Jeremy Chinn

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Re: Pair of Baby Ringmasters
« Reply #9 on: May 12, 2024, 08:38:50 AM »
Nicely built and finished Ralph!

Offline ralph stutes

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Re: Pair of Baby Ringmasters
« Reply #10 on: May 12, 2024, 09:44:47 AM »
This model started out as a PDF plan downloaded through the OZ website.  I converted it to DXF format to work with AutoCad and scaled it up to a 21 inch format, then decided the TD 051 was too much for such a light model, and more specifically, my advanced age and unknown ability to not get dizzy and fall on my face when I tried to fly it.  So I upscaled it to 25 inch wingspan,  and the only modifications due to the change in size was to go back and redraw the spar cutouts in the ribs to accommodate 1/4 inch square spars for the wing.  I had just gotten a laser cutter, and was able to load the DXF file directly into the controller program for the laser (lightburn) and make the cuts for the individual parts including the ply doublers for the nose.  The beauty in doing the laser cuts, is they are all generated from the original CAD files, and I knew they accurate because everything fit properly in AutoCad.

The build went uneventfully and the result is what is pictured.  I will say that covering a lightweight 1/2 plane with monokote is really much more difficult than doing a larger C/L or RC plane.  I now have all the parts cut for its big brother, a 42 inch Ringmaster for my Fox 35, and to follow it with the Daddy of the group, the Ringmaster Imperial, but those are for later times and posts.

Offline Dave Hull

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Re: Pair of Baby Ringmasters
« Reply #11 on: May 12, 2024, 11:07:27 PM »
Ralph--nice projects! I really like how the "Baby" turned out.

The wing is now beefy! You might want to consider grain orientation on future vertical stabilizers.

Dave

Offline ralph stutes

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Re: Pair of Baby Ringmasters
« Reply #12 on: May 13, 2024, 09:15:10 AM »
Interesting you should mention that. :D  I knew that I had the grain backwards when I assembled the parts, but I have other projects planned and didn't want to waste the balsa I had just cut.  When I nested the parts in autocad, I did not realize I had the grain wrong until I ran the sheet through the laser.  On my full sized ringmaster follow on project, I made sure to get the grain vertical.  Thanks.

BTW, this was my first project with the laser, and I learned pretty quickly that it doesn't take much to waste a lot of wood, which was the direct cause of leaving the grain as it is.  At least if it breaks, it will be an easy job to trim it off and install a new fin and rudder.
« Last Edit: May 13, 2024, 09:44:10 AM by ralph stutes »


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