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Electric Osmose Building

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Old 10-31-2007, 01:57 AM
  #26
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Old 10-31-2007, 03:27 AM
  #27
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Default RE: Electric Osmose Building

Hi Isaac,

Still busy with form the spars - coming along nicely. Great photos you put through. A couple of questions:

What is the measurement for the leading edge to the hole (leading side of the hole) you cut for the incidence adjuster on the root? Suppose the measurement is not entirely critical, but would be useful to have a reference point.

I see you have made either a hole, or an indentation on the dowel in each wing tube. Not sure what the holes/identations are for? (excuse the ignorance).

Thanks,
Roly
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Old 10-31-2007, 11:06 AM
  #28
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ORIGINAL: rolyjr

Hi Isaac,

Still busy with form the spars - coming along nicely. Great photos you put through. A couple of questions:

What is the measurement for the leading edge to the hole (leading side of the hole) you cut for the incidence adjuster on the root? Suppose the measurement is not entirely critical, but would be useful to have a reference point.

I see you have made either a hole, or an indentation on the dowel in each wing tube. Not sure what the holes/identations are for? (excuse the ignorance).

Thanks,
Roly
Hi Roly
The measurement is 100mm, according to the marks on the fuselage.
The purpose of the holes to prevent under pressure when you want to pull out tne carbon tube,
As you will see later, the ends off the carbon tube will also be pluged with dowels.

Isaac Najary
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Old 11-01-2007, 12:36 PM
  #29
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Old 11-01-2007, 12:50 PM
  #30
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Old 11-02-2007, 04:54 AM
  #31
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Default RE: Electric Osmose Building

Hi Isaac,

Just wanted to say a big thanks for posting the pics you have, and helping me/others with the info you have given. It is very helpful.

Regards
Roly
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Old 11-02-2007, 05:33 AM
  #32
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Hi Isaac , also want to join Roly in thanking you for these pictures - also following your progress on a daily basis . I should start building my Osmose in the beginning of 2008 and will certainly be using your pics . Have been visiting Roly and watching his progress - he is doing well with very neat work . Had a look at the control horns , he is using the Chip hyde units ,which similar to yours being screwed on with three small self-tappers , it looks very weak to me . Being of the old school, and used to over engineering with control horns being bolted right through the flying surface , why do you go for these and not the type that bolts right through the surface - such as the type by Haoye models?

Brgrds
Juan
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Old 11-02-2007, 09:41 AM
  #33
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Default RE: Electric Osmose Building

Isaac, what is your planned motor for the Osmose?
I'm thinking of ordering one and wasn't sure if there was enough room for a big prop without going to larger gear..
I can't tell, but did you honeycomb your foam for your wings and stabs to save weight? Are you concerned with weight being an issue as it's such a large plane?

Great work!! And thanks for the build thread.. Alot of people will find it usefull in their projects for years to come..

Chris
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Old 11-04-2007, 03:44 AM
  #34
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Quote:
ORIGINAL: jnp

Hi Isaac , also want to join Roly in thanking you for these pictures - also following your progress on a daily basis . I should start building my Osmose in the beginning of 2008 and will certainly be using your pics . Have been visiting Roly and watching his progress - he is doing well with very neat work . Had a look at the control horns , he is using the Chip hyde units ,which similar to yours being screwed on with three small self-tappers , it looks very weak to me . Being of the old school, and used to over engineering with control horns being bolted right through the flying surface , why do you go for these and not the type that bolts right through the surface - such as the type by Haoye models?

Brgrds
Juan
Hi Juan
In the past I used the dowel&bolt method but I prefer this method because it is stronger and you don't see the bolt on the upper side of the control surface.
The trick is to saturate the foam with large quantity off CA, about 1CC, together with the gluing of the plywood. that make the foam in this area like stiff block that harden the control surface and prevents flutter.
After I screw the bolts I unscrew them drip little CA in the screwing.

Isaac Njary
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Old 11-04-2007, 04:37 AM
  #35
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Default RE: Electric Osmose Building

Quote:
ORIGINAL: patternflyer1

Isaac, what is your planned motor for the Osmose?
I'm thinking of ordering one and wasn't sure if there was enough room for a big prop without going to larger gear..
I can't tell, but did you honeycomb your foam for your wings and stabs to save weight? Are you concerned with weight being an issue as it's such a large plane?

Great work!! And thanks for the build thread.. Alot of people will find it usefull in their projects for years to come..

Chris
Hi Chris
I plan to use the Hacker C50-13XL and JETI Spin 99 Opto speed control.
When the plane is horizontal (Using 20.5" prop, the carbon landing gear that comes with the kit (19cm) and 2.5" wheels), it leaves only 1.5cm clearance from the ground.
So I am going to use the ZN CARBON FIX GEAR XL which is 21cm.
http://www.znline.com/produits.php?l...ata=1098806498

Chris I din't honeycomb the foam of the wings/stabs becuase they come already sheeted.
According to my plan it will weight a little under 5 KG (using 1.2kg battery).

Isaac Najary



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Old 11-06-2007, 04:21 AM
  #36
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Default RE: Electric Osmose Building

Isaac , thanks , I was looking at the dowl and bolt system as I did not like the thin ply and smallish screw idea . Your idea of the CA makes sense .. will try it ...will be neater . Brgrds Juan
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Old 11-08-2007, 02:08 AM
  #37
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Old 11-11-2007, 01:13 PM
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Old 11-11-2007, 01:43 PM
  #39
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Old 11-12-2007, 12:13 PM
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Default RE: Electric Osmose Building

Hi Najary
can I ask you to take some few pics off the fuse before you start to glue in the oieces ...from the radio \ engine room ?
Is the from Ca installed a "floor" in the fuse like the one in the Genesis placed right under the wing tube!
Thanks
Rune
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Old 11-12-2007, 03:14 PM
  #41
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Default RE: Electric Osmose Building

Hi Isaac

If you haven't already, may I suggest you double check the stab incidence lines as mine are off. The left (looking from the back) is lower than the right by approximately 1mm, but is clearly obvious when you put a straight dowel or similar through the hole for the stab tube.

Regards
Roly
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Old 11-13-2007, 11:26 AM
  #42
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Default RE: Electric Osmose Building


Quote:
ORIGINAL: Rune

Hi Najary
can I ask you to take some few pics off the fuse before you start to glue in the oieces ...from the radio \ engine room ?
Is the from Ca installed a "floor" in the fuse like the one in the Genesis placed right under the wing tube!
Thanks
Rune
Hi Rune
I will take some pics off the fuse before I start to do anything.
Yes the "floor" should be placed under the wing tube.
But if you build the plane for electric motor, you don't need it at all.
Regards.
Isaac Najary
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Old 11-13-2007, 11:47 AM
  #43
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Default RE: Electric Osmose Building


Quote:
ORIGINAL: rolyjr

Hi Isaac

If you haven't already, may I suggest you double check the stab incidence lines as mine are off. The left (looking from the back) is lower than the right by approximately 1mm, but is clearly obvious when you put a straight dowel or similar through the hole for the stab tube.

Regards
Roly
Hi Roly
Thank you for drawing my attention to that.

Regards
Isaac
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Old 11-13-2007, 01:02 PM
  #44
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Default RE: Electric Osmose Building

I will use a Ys 160 or 170 (if santa is nice ) and a short pipe, so i dont need it to be a part off the pipe tunnel (the floor).
But it had been ok to fasten tank , reciver and the rest off the radio system .
For elevator i most likely use Futaba 9650 ailerons i first think off useing JR 9411 SA but after Kjell Olav had some problem i dont know anymore!
any sugestions anyone??
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Old 11-13-2007, 01:48 PM
  #45
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Default RE: Electric Osmose Building

Hi Rune

Can I ask you to explain what the problem with the 9411SA is?
I used to use them on my old Impulse and now I use them on my C-arf Integral with no any problems!!!


Najary
We all adore you for your work!!
Give us some more photos!


thanks

Ram


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Old 11-13-2007, 02:05 PM
  #46
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Default RE: Electric Osmose Building

http://www.rcuniverse.com/forum/m_6506117/tm.htm
read this tread ...he had some pot. problems as i understood .... its with the YS and this servoes ..maybe same with other servoes
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Old 11-15-2007, 06:19 AM
  #47
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Old 11-15-2007, 06:44 AM
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Old 11-19-2007, 01:27 AM
  #49
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Full marks to you Itsik Najary!! Never seen such expert and detailed documentation on the site! Keep up the good work and happy flying.

Dave in Thailand.
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Old 11-20-2007, 06:24 AM
  #50
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