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Old Jul 19, 2012, 08:51 AM
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I like the simplicity of the design but what makes this one more crash tolerant?
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Old Jul 19, 2012, 11:02 AM
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Quote:
Originally Posted by shutterbug772 View Post
I like the simplicity of the design but what makes this one more crash tolerant?
In another video
How to make a crash-proof 3D foam RC plane (5 min 4 sec)

hammydude explains his concept. Mostly it's very robust, but we know that attempting to stop inertia suddenly causes damage. I think the best crash proofing comes from experience, judgment and the ability not to collide with anything solid.
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Old Jul 19, 2012, 11:17 AM
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Yippee!

The maiden went very well (sorry, no video). Unfortunately I didn't use the foam firewall that Hammydude did. I accidentally grabbed the wrong piece of plywood when I made the firewall and it delaminated on the first landing. I made temporary repairs to continue the maiden and was 95% satisfied.

It did all the maneuvers I am capable of very nicely. (I'm hoping to expand those skills with this plane.) It rolls and loops beautifully. Rudder turns are fairly flat. The 5% I need to work on is power and balance - after installing a proper firewall. I'm going to play with props to see if I can get more vertical and more top end. It might be a bit nose heavy too, even though it balances at 25% of chord, but first comes the new firewall.

The breeze was quite light, but it didn't affect the plane at all. It felt like the weight was going to help meet my goal of stability in the wind. With the same power but a lighter airframe and battery I'll bet it would be a hoot.

I must say that the color scheme made it very visible to me on a gloomy day.
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Old Jul 19, 2012, 11:38 AM
Lets break some props :D
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Glad you're having fun there buddy!

You ought to consider riveting the firewalls or sommet haha..

nice one dude, have fun..you can!
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Old Jul 19, 2012, 01:34 PM
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Originally Posted by joseico90 View Post

...You ought to consider riveting the firewalls or sommet haha..
yeah, or not using any old junk that is lying around. Won't make that mistake again.
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Old Jul 19, 2012, 03:52 PM
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Motor mount

I used the same foam for my new motor mount as Hammydude used in the second video above. I left the zip ties a little long in case I needed to adjust any of them, but I'll clip them off after another couple of flights What a difference!

I used 5 minute epoxy to mount the foam firewall, which adheres very tenaciously to the plane. The plane is much quieter, too. It wasn't all that loud at first, and now I'd say the sound has been cut about in half. I'll try to find out where to get this foam.

The wind picked up a little and I had time for two more flights to test the motor mount and get a feel for how long the battery will last. After a little fine tuning I think I'll be able to say my goals have been met. Now to see how well it holds up. So far, so good.

Next is to build a lightweight version for the indoor season.
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Old Jul 19, 2012, 04:22 PM
Lets break some props :D
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I had the same idea for motor "block" but this is the first/second time I see someone actually using it.

Good stuff, hey John, do you need to push that prop saver right back on the shaft?

??Videos??


Amazing use of English language there.."adheres very tenaciously to the plane"

My goodness!
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Old Jul 19, 2012, 04:38 PM
You sabotaged my plane.
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Good how to video. If that doesn't get people to building nothing will.
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Old Jul 19, 2012, 05:24 PM
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Quote:
I had the same idea for motor "block" but this is the first/second time I see someone actually using it.
Thankfully, Hammydude had sent me a hunk of that foam so I've got enough for several more planes.

Quote:
Good stuff, hey John, do you need to push that prop saver right back on the shaft?
That prop has a narrow center hole, and if I push it further back the prop gets held by the shaft so it won't twist off like it should.

Quote:
??Videos??
My keychain hatcam is acting badly and I haven't found another one I like that's cheap enough. Besides, I have no exotic 3D skills to show off - yet.

Quote:
Amazing use of English language there.."adheres very tenaciously to the plane."

My goodness!
I thought it would be better than "sucks on tight."
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Old Jul 20, 2012, 03:52 AM
Lets break some props :D
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Just saying about the shaft because that is a recipe for a bent shaft even in a mild collision..you might wanna drill the prop and get the saver right back.

I got one of these cams, it's great value for money and HD images are quite good.
http://www.ebuyer.com/265645-kodak-p...edium=products

We're nor asking for 3D demos here dude! just visuals
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Old Jul 20, 2012, 04:40 PM
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OK, I'll see what I can do about some video.

Agreed on the prop shaft/saver issue. I think the foam "firewall" will help cushion things a bit until I get that done.
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Old Jul 20, 2012, 05:28 PM
Lets break some props :D
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Oky doky !
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Old Jul 20, 2012, 09:28 PM
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I got a short video this evening - including a crash. I'll clean it up and post it soon.

We're going to AMA headquarters next week, and I wanted to be sure to bring a plane to fly there. I have several I like, but I think I'll bring Hammy26. Being very homemade I think it's a good one to bring.
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Old Jul 20, 2012, 10:31 PM
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OK, here's a crude video from my not-so-trusty hatcam. Thank goodness you didn't want a 3D demo, jose. It includes an embarrassing crash, but does answer
shutterbug772's question about crash tolerance. There was only slight bit of cosmetic damage after this cartwheel and I was delighted. I'm also happy with the visibility of the color scheme.

I have no idea why the date shows as 2008. I haven't been in the hobby that long.

Hammy26a (0 min 38 sec)
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Old Jul 21, 2012, 02:29 AM
Lets break some props :D
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That's what I call a decent crash test..

that's all it was... right?

Thank you for the video!
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