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Old Jul 21, 2012, 10:10 AM
Vertical approach specialist
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Northeastern Illinois
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Originally Posted by joseico90 View Post
That's what I call a decent crash test..
that's all it was... right?
Ummm...er... sure!
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Old Oct 10, 2012, 03:28 PM
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Canada, ON, Huntsville
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electronics layout???

hey guys,
Thanks to all for the great plans.... I'm building a hammy26 but i would love some dimensions for servo locations. Even some better quality pics, I can't really see much on Potshot's cause picture resolution is so low can't zoom in. Maybe you could even put them on the plans. Any help would be great ill post pics when its done and try to get some video when it flies. Im going to try with HK FC28-22 brushless 1200kv motor, 25amp plush esc, gws 8040 prop, 1300 3s, 3 9g great planes servos. I fly an ultra micro t28 now but this will be my first "bigger" 3d plane so i'm kinda winging.
P.S. If people dont know about this site check it out more planes and plans
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Old Oct 10, 2012, 07:18 PM
Vertical approach specialist
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Northeastern Illinois
Joined Mar 2009
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Hope this picture helps, RCtastic. I'm giving this plane a break during the indoor season and using the rudder and elevator servos elsewhere for a while.

The center of the aileron servo (and the CG) is 5 1/2" from the front edge of the fuse (not including the foam "firewall"). The leading edge of the large square hole in front of it is 4" from the front edge of the fuse. I had the rudder and elevator servos stacked in that hole, facing opposite ways. The hole is sized for the two servos I have, so make yours accordingly The small rectangular hole in front is just a pass through. The black band is a velcro strap for holding the battery in.

I should caution you, as mentioned earlier in the thread, that this version is pretty heavy. I built it that way to handle wind, but with the power plant and battery I used it surely isn't anything close to a 3D machine. My heavy version served it's purpose, nicely handling the breeze at Muncie one afternoon after the Nats guys were done.

I'm building another version from FFF without skins for the indoor season. If you really wanted a 3D machine, I'd say to build it from 3mm Depron with CF reinforcement and doublers as you see fit. I also recommend adding an inch or more between the LE of the wing and the front of the fuse to give more room for balancing with smaller batteries.

Have fun with your build and show us some pics and a vid if you can.
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Old Oct 10, 2012, 10:15 PM
You sabotaged my plane.
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Arizona
Joined Jun 2002
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Quote:
Originally Posted by RCtastic View Post
hey guys,
Thanks to all for the great plans.... I'm building a hammy26 but i would love some dimensions for servo locations. Even some better quality pics, I can't really see much on Potshot's cause picture resolution is so low can't zoom in. Maybe you could even put them on the plans. Any help would be great ill post pics when its done and try to get some video when it flies. Im going to try with HK FC28-22 brushless 1200kv motor, 25amp plush esc, gws 8040 prop, 1300 3s, 3 9g great planes servos. I fly an ultra micro t28 now but this will be my first "bigger" 3d plane so i'm kinda winging.
P.S. If people dont know about this site check it out more planes and plans
RCtastic, Sounds like what you have should work but you might want to go with a lighter battery. If you land a little hard the weight of a 1300 can cause damage to an airframe. I fly most of my foamies with a 3 cell 800. Performance is much better by not dragging a heavy battery around.

Jim
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Old Oct 11, 2012, 11:24 AM
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Canada, ON, Huntsville
Joined Oct 2012
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Thanks for the info very helpful info guys.
I'm looking for the same type of plane as potshot, something that can fly in some wind but with some increased capabilities to move my skills along a bit. I hope this will fit the bill, plus the design is too easy not to try. I hear you about the battery weight, I may just pick up something smaller so I have it ready when I'm done. I have 2 x 3s 800's from a blade CP I dont/can't fly, but they have been sitting for some time so I'm not sure how they will work.
Here are some pics of the almost finished parts, weight of these parts (still missing cf rod on fuse bottom, add a few g's) is 190g. I used dollar store 5mm foam, it seems lighter (and is cheaper) than other 5mm, but with the patterned duct tape skin its very rigid. I couldn't find the reinforced packing tape.
I see I missed posting a link last post so if people haven't checked this site out do so its very good.http://www.mikeysrc.com/
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Old Oct 11, 2012, 01:22 PM
Vertical approach specialist
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Northeastern Illinois
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Originally Posted by RCtastic View Post
...I used dollar store 5mm foam, it seems lighter (and is cheaper) than other 5mm, but with the patterned duct tape skin its very rigid.
My foamboard was from Wal-Mart and I left the paper on in addition to applying packing tape for color. Yours should be significantly lighter, and the smaller battery should work out well.

Your color scheme is quite original. Looking forward to the finished product.
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Old Oct 17, 2012, 07:12 AM
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anyone have any suggestions about where to get that magic foam rubber for the motor mount? what was it originally from? I've been looking but the only thing I can find that seems close is the foam interlocking flooring mats that you sometimes see in bright colours for kids play area at "Home Deathspot" etc. I got my electronics in the mail yesterday and Im hoping to get her in the air ASAP but that foam seems like a key component. Any help is much appreciated.
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Old Oct 17, 2012, 03:51 PM
Vertical approach specialist
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Northeastern Illinois
Joined Mar 2009
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Quote:
Originally Posted by RCtastic View Post
...where to get that magic foam rubber for the motor mount? what was it originally from? I've been looking but the only thing I can find that seems close is the foam interlocking flooring mats that you sometimes see in bright colours for kids play area at "Home Deathspot" etc. ...
I got mine from Hammydude. I think he said his wife got it at some unidentified art supply store, . The only problem I have with it is that it is thick and heavy, though in my original application the weight was not an issue

IMHO, it would be a good idea to come up with some kind of substitute. I think the floor mat foam you mentioned might work or maybe even some 9mm EPP. The trick seems to be foam that will not crush when you tighten the wire ties but is flexible enough to cushion the worst shocks. Let us know what you come up with. I'd want something lighter than the original foam for my indoor version.
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Old Jan 07, 2013, 10:51 PM
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Joined Jan 2013
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Please help me to choose the right parts for this project.

Dear sir,
I am new in RC Planes, I found other RC Plane but I much like this and I also make one only watching Hammy original video at YouTube with EPP that was not so good but this encourage me to continue my hobby. but now I want to make one for flying. I need your help first tell me that can I make this with Depron 3mm or Coroplast 6mm which one is best for new comer. Please undermine that I am new in hobby. second please tell me that which parts I need for this project in cheap price from Hobbyking.com please tell me every part i need for this.
Please choose that part which I can also use in other heavy plane if I want.
I hope you understand and help me.
Best Regards,
Atif Mushtaq
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Old Jan 14, 2014, 11:12 PM
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i like it
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Old Apr 05, 2014, 05:55 PM
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Canada, ON, Huntsville
Joined Oct 2012
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Still working with this design

In an attempt to add to this old thread, I did build and fly my plane a few times, it is very heavy. After a bit of a break from scratch building im going to make a second lighter version, when I do I will try to post complete details of both.
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Old Apr 06, 2014, 07:09 AM
Vertical approach specialist
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Northeastern Illinois
Joined Mar 2009
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Good news! Do you have any pictures of the completed first one? Otherwise we'll have to wait patiently for the new one.
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Old Aug 18, 2014, 02:02 PM
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centre of gravity

hi everyone love the plane just bwant to know where the cg is more or less thanks
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Old Aug 18, 2014, 04:03 PM
Vertical approach specialist
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Northeastern Illinois
Joined Mar 2009
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If you are building from the plans here, the CG is 7.17 from the front edge of the fuse. Let's say between 7 and 7.25.
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Old Aug 18, 2014, 05:22 PM
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Danmark
Joined Mar 2011
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Hi guys..
Nice simple plane. The foam to the firewall looks very much like a sleeping mat (the one You use on camping or hiking), I'm gonna try with that.
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