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Old Jan 16, 2009, 03:19 PM
It only takes one good idea
dag214's Avatar
Fishers, Indiana
Joined Oct 2004
5,995 Posts
Quote:
Originally Posted by jfetter
Dag,

Have you decided for certain on the rear motor position? I can't wait to see the full, framed plane sitting on the stands! Oh yeah, did you ever take thrust measurements?

Jack
Hey Jack,
Well the thrust measuring thing I made did not work, will try something different soon. After spending a bunch of late nights looking at what the H-stab, and V-stab will weigh I think I may just go ahead and mount my big bad boy Hackers at the rear of the nacelles. They just run so smooth with just a prop on them. I do have one last test were I am setting up a nacelle with the actual support strut that the finished airframe might have and run one more full power test. I will video when I do it.

Thanks, DAG
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Old Jan 16, 2009, 04:04 PM
Gentle 'Bella'
gnats82's Avatar
Augusta, KS USA
Joined Dec 2007
4,651 Posts
dag -

A comforting thing I see in the way you are going about this is that you will have some flexibility should changes become necessary down the road.

I guess shaft drive systems have gritty bugs to work out - in my mind that much prop hanging on the end of a 1/2" aluminum shaft would seem to be vulnerable to gyroscopic procession if any whipping is present just inboard of the ouput bearing. I'm not an engineer, it's just a seat-of -the-pants kind of thing.
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Old Jan 16, 2009, 06:08 PM
It only takes one good idea
dag214's Avatar
Fishers, Indiana
Joined Oct 2004
5,995 Posts
Quote:
Originally Posted by gnats82
dag -

A comforting thing I see in the way you are going about this is that you will have some flexibility should changes become necessary down the road.

I guess shaft drive systems have gritty bugs to work out - in my mind that much prop hanging on the end of a 1/2" aluminum shaft would seem to be vulnerable to gyroscopic procession if any whipping is present just inboard of the ouput bearing. I'm not an engineer, it's just a seat-of -the-pants kind of thing.
I think I have the shafting figured out, but like I said "think". I am not 110% sure it would work in the long run .

It is not the 1/2" tube that has caused me the problems, it is my machining just is not up to it.

Oh well, she will fly, just about 8 pounds more than I planned for, but she will still have a wing loading under 35.

Thanks, DAG
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Old Jan 16, 2009, 06:10 PM
It only takes one good idea
dag214's Avatar
Fishers, Indiana
Joined Oct 2004
5,995 Posts
She is looking more like a plane, nope, a B-36D Peacemaker.

DAG
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Old Jan 16, 2009, 06:14 PM
I fly, therefore, I crash!!!
SteveT.'s Avatar
San Jose, CA
Joined Jan 2008
26,692 Posts
Hi Dag...

As I have said before, the plane is amazing and so are your building skills!! I take it you have a large field/runway to take off from??

SteveT
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Last edited by SteveT.; Jan 16, 2009 at 06:32 PM.
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Old Jan 16, 2009, 06:28 PM
Bi-Planes
Tim Farrar's Avatar
Houston Texas
Joined Apr 2006
1,589 Posts
Quote:
Originally Posted by dag214
She is looking more like a plane, nope, a B-36D Peacemaker.

DAG
Sure is Dag !!

She's looking fantastic !!

Seeya, Tim
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Old Jan 16, 2009, 11:00 PM
Vintage Flyer
Indiana
Joined Jan 2005
1,674 Posts
What a shame to cover all that beautiful framework up!!
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Old Jan 16, 2009, 11:33 PM
Registered User
Sayers1's Avatar
Indianola Iowa
Joined Jan 2008
1,063 Posts
Hello Dag214
I ran into this thread a short time ago while browsing the forums.
You are building a beaufiful Aircraft , I do not have the Skill to bulid or Fly such a machine , you are with out doute a master builder, I wiil be waiting to see the finnished product.
I have one question , you may very well have covered it in the thread & I have not read every post on every page so please forgive me if it's been covered. The Title of the thread says" 6 a turning and 4 a burning " Are you going to have EDF motors on the wing tips ?
Thank you and once again it is one beautiful plane.
Jerry
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Old Jan 17, 2009, 01:14 AM
Registered User
Joined Dec 2008
16 Posts
Quote:
Originally Posted by dag214
But what about making this a control stunt .

DAG
Well, you could. You could. I used to have a big stunter with a .60 SuperTigre that pulled really hard. Do you think this model would pull more than that? You've got the engineering skills, so you would know better than me.
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Old Jan 17, 2009, 01:19 AM
Pro Horder
turbonut's Avatar
upland CA
Joined Dec 2004
7,357 Posts
Nice Dag..I see a bunch of sanding in your future!!!!..O yea the box is on its way!
Scott
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Old Jan 17, 2009, 05:56 AM
It only takes one good idea
dag214's Avatar
Fishers, Indiana
Joined Oct 2004
5,995 Posts
Quote:
Originally Posted by Sayers1
Hello Dag214
I ran into this thread a short time ago while browsing the forums.
You are building a beaufiful Aircraft , I do not have the Skill to bulid or Fly such a machine , you are with out doute a master builder, I wiil be waiting to see the finnished product.
I have one question , you may very well have covered it in the thread & I have not read every post on every page so please forgive me if it's been covered. The Title of the thread says" 6 a turning and 4 a burning " Are you going to have EDF motors on the wing tips ?
Thank you and once again it is one beautiful plane.
Jerry
Thanks for the great comments, not sure about the master builder thing.
I am going to make the jet nacelles so they can hold a EDF's, but at this moment I am over budget, to have 2 more ESC, 2 more motors, 2 more flight packs, and 2 more fan units is just not going to happen.

Thanks, DAG
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Old Jan 17, 2009, 06:32 AM
It only takes one good idea
dag214's Avatar
Fishers, Indiana
Joined Oct 2004
5,995 Posts
Quote:
Originally Posted by turbonut
Nice Dag..I see a bunch of sanding in your future!!!!..O yea the box is on its way!
Scott
Yea,
That sanding thing is something I am not looking forward to. But she will look cool.
Thanks, DAG
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Old Jan 17, 2009, 08:32 AM
I havent decided yet
Indiana
Joined Jun 2006
2,120 Posts
i work in the robotics division at 'subaru and I live just up the road from you. I spend quite a bit of time in the machine shop. it is very well equipped. if you ever need any precise machine work done, just shoot me some drawings, I have some very skilled guys working for me that would be more than "happy" to do that for me.
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Old Jan 17, 2009, 09:11 AM
I am ready for HHAEFI!!
powerlines's Avatar
United States, GA, Cochran
Joined Apr 2004
6,573 Posts
This thing SHOULD make it to SEFF RIGHT???
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Old Jan 17, 2009, 09:35 AM
HAL... Open the damn doors!
jfetter's Avatar
Miramar, Florida
Joined Jul 2007
8,465 Posts
Quote:
Originally Posted by powerlines
This thing SHOULD make it to SEFF RIGHT???
Don't worry Chris, I've already planted the seed and started working him over ;-)

Besides, who else could appreciate it more than the SEFF e-fliers? You sure won't hear "yeah, that thing is nice but you should have 6 x 50cc gassers hanging off her..."

Jack
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