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OMP Hybrid "My Build"

Old 09-12-2004, 12:04 AM
  #26  
Crash90
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Default RE: OMP Hybrid "My Build"

Finally some pics. In pic 1 you can see both fuse sides built. Side 1 has the fuse dubler installed per the plans.
In pic 2 I have both fuse sides clamped together and I sanded the hole for the wing tube through both sides at the same time. I also driled the hole for the wing bolt.

I then used those holes as reference points to glue in place the fuse dubler on side 2 remembering to make a right and a left side. Tomorrow night I will begin installing the braces.

My wing tube outer tube (cant think of the name) doesn't fit through the holes in the doubler. Checked the ribs and it doesn't fit there either. I was going to enlarge the holes but I think I remember in the GS540 build thread that the outer tube comes with the CF tubes has slightly thinner walls. I think I will order one and use it instead. This was mentioned in the instructions that there may have been an error in the laser cut on a few of the first runs. No biggie.


Flatspin. Why not just trace the ribs onto something? Heck, you can trace them onto a piece of posterboard and cut them out as templates in case you need them.
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Old 09-12-2004, 08:36 PM
  #27  
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Default RE: OMP Hybrid "My Build"

iv flown the hybrid in post 15 and know the guy who built it. its an awesome flying plane it hovers really well weve bee tring to get some vids of it and will try to post them here if we can. its got jr8411 all the way around and ways about 18# but the guy who built it builds a little heavy and it still flys great. have fun with yors.

mark
Old 09-13-2004, 08:13 PM
  #28  
Flatspin-RCU
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Default RE: OMP Hybrid "My Build"

That G62 weighs about 1 1/2 pounds more than the Da50 and Brison 52 etc...also he has a smoke system so I can see where it would weight 18lbs. Bet it looks cool with smoke though.. 8^)

Ron
Old 09-13-2004, 10:19 PM
  #29  
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Default RE: OMP Hybrid "My Build"

The next step in construction is to install 1/4" x 1/4" balsa reinforcements to the fuse sides. Also I installed the 1/4 x 1/4 horizontal stab support. I finished one side tonight and will begin the other side tomorrow.
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Old 09-14-2004, 08:06 PM
  #30  
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Default RE: OMP Hybrid "My Build"

crash90,

Is that the wing tube hole at the end of the doubler?

regards
Marcus
Old 09-15-2004, 07:08 AM
  #31  
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Default RE: OMP Hybrid "My Build"

Yes.
Old 09-15-2004, 02:15 PM
  #32  
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Default RE: OMP Hybrid "My Build"

Crash

Why the Brison 52 instead of the DA 50. Are there any other factors other than the weight.


gtimmons
Old 09-16-2004, 07:56 AM
  #33  
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Default RE: OMP Hybrid "My Build"

OK. As construction progresses a few decisions have to be made. I was hoping to install a BME55 Xtreme to cut another pound from the plane. To do this I would have to install a pull pull on each elevator. In my Sukhoi this was an easy task as there was plenty of room inside the fuse. With the Hybrid, that is not the case. The only way that I can see to install pull pull would be to mount the elev servos externally and run the cables along the outside of the fuse. This would not be very attractive. It would also force me to keep the elev servos back behind the ailerons which means that I could only move the servos forward maybe 12 inches or so. I don't think it's worth it. So, unless somebody can come up with a better idea, I will be building this bird stock with the DA50. No CF anywhere. I will post in the kit building section to get opinions on linking the elev halves together and operating them with a single servo. This would allow me to mount the servo up inside the fuse where I could benefit.

Last night I finished installing the 1/4 balsa bracing on the second fuse side. Tonight I will clamp both sides together and do a final sanding on them to make sure they are identical. I will also begin installing the servo mounts along with some other small pieces. Pics will follow.


Edited to let you know that I have figured out the pull pull. i'm back in business. I will post pics when I get that far.
Old 09-16-2004, 08:46 PM
  #34  
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Default RE: OMP Hybrid "My Build"

Crash,

I was thinking about the same on the pull-pull for the elevator halfs. I wanted to join the elev. togather using hardwood dowel and re-inforcing with CF or FG cloth. Then use pull-pull system using the Y...but the V part of the Y is very short, the l part of the Y is long. This way I could keep the wires at the the very end of the fuse and still mount the single 15kg servo upfront. above the rudder servo. I somehow dont like the dual elevator servo setup.

Let me know of your thoughts on this.

Regards
Marcus
Old 09-16-2004, 10:00 PM
  #35  
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Default RE: OMP Hybrid "My Build"

mchandrasegran, you are reading my mind. Do a search with my name and you will see that we have the same idea. Well, almost. I am not going to join the elev halves. I will mount a single servo on its side behind the wing tube. I will create 2 Ys'. 1 For the top and 1 for the bottom. I will make the l part a little longer 7-10" so my exit hole isn't so big. The decision I have to make is on the servo. OMP says 150-180oz per elev 1/2. That seems like an awful lot. That's as much as my 23lb Sukhoi called for. That would require me to use the new Hitec servo when it comes out. Total weight will be around 5oz. OUCH. Futaba makes a servo that puts out 277oz of torque at only 3oz. I will do a little asking around but I think it will suffice.
Old 09-19-2004, 10:38 PM
  #36  
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Default RE: OMP Hybrid "My Build"

Crash90,

I have already bought the Hitec 5745, 15Kg digital servos....but it weighs 5 oz and its BIG....hehe...I was looking at the futaba too...but too expensive. Got 2 units, 1 for the rudder too.

I dont mind the additional weight of 4 oz extra...as I plan to lighten the plane.

a. Carbon wing tube
b. Carbon Landing gear
c. no spinner
d. no wheel pants
e. lightening holes on the fuse....the cross bracing 1/4" balsa stick will be laminated with carbon strips


Regards
Marcus
Old 09-20-2004, 09:27 AM
  #37  
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Default RE: OMP Hybrid "My Build"

Hey guys, keep up the great engineering work. But be very careful on lightening up the fuse. I don't recommend cutting lightening holes in the fuse sides, it's already extremely light in build and you probably wouldn't save that much. The CF tube and gear would give you the best benefits though. Also those servo recommendations are certainly the highest end. I'm using 945s with about 150 in-oz of torque in mine and they work fine. Tons of control authority.
Old 09-20-2004, 01:50 PM
  #38  
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Default RE: OMP Hybrid "My Build"

I have to agree with AFSalmon.
Old 09-21-2004, 11:44 AM
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Default RE: OMP Hybrid "My Build"

Well, I have some time to kill at work so I thought I would update the thread. I have all of the formers installed. The 2 fuse sides are now joined together and I just finished sheeting the bottom of the fuse and installing the ply tailwheel mounting block. Tonight I will be installing the firewall and constructing the aft turtledeck. Pics and a little more detail will be posted tonight.

So far so good. This kit is alot of fun to build. It's amazing how easy it is, with the ARF craze, to forget the sense of accomplishment you feel when that big bundle of wood begins looking like a plane.
Old 09-21-2004, 09:49 PM
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Default RE: OMP Hybrid "My Build"

Here's some more pics if anybody is still following this thread.
Pic 1 shows the firewall. If you look closely you can see that the firewall is pinned in place with 4 1/8" dowels down each side. This was an easy task as OMP already had the pilot holes drilled in the fuse doubler.

Pic 2 shows the formers. Not many. Actually there is only 1 former that runs the entire width of the fuse in the middle. 1 in the back and one in the front. This baby is built light.

Pic 3 shows the sheeting on the bottom of the fuse.

Pic 4 shows the turtledeck framed up.

I could have gotten alot more done tonight but I was having a bad night. You know, nothing I cut fit, wrong angles, etc. I figured I would quit for the night . Thursday I will install the turtle deck.
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Old 09-22-2004, 07:52 AM
  #41  
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Default RE: OMP Hybrid "My Build"

Crash

Keep it up man, I am following your build. I think I may need this plane.


gtimmons
Old 09-22-2004, 12:44 PM
  #42  
martyg
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Default RE: OMP Hybrid "My Build"

ORIGINAL: Crash90
... if anybody is still following this thread.
I'm following closely too. The pictures speak volumes. Keep 'em coming!
Old 09-22-2004, 09:22 PM
  #43  
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Default RE: OMP Hybrid "My Build"

OK some more pics.
Pic 1 I have the turtledeck installed. This required cutting templates from the plans, taping them to some balsa and cutting them out. Installing some 1/4" balsa bracing and gluing everything together.

Pic 2 is the wing tube sleeve installed. Just cut and glue

Pic 3 is 2 formers. These will be used to hold the removeable hatch in place.

Pic 4 has one of them (F1A) installed behind the firewall.
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Old 09-22-2004, 10:06 PM
  #44  
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Default RE: OMP Hybrid "My Build"

Crash90,

Keep it coming....I am getting this plane....SOON.

regards
Marcus
Old 09-22-2004, 11:40 PM
  #45  
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Default RE: OMP Hybrid "My Build"

mchandrasegran. Go ahead and pull the trigger. You only live once.
Old 09-24-2004, 06:14 AM
  #46  
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Default RE: OMP Hybrid "My Build"

Just finished step 19 of 28 on the fuse.
It was time to build the upper cowl sides.
I cut the templates from the plans and taped them to a piece of balsa to cut them out. Glued some bracing to them and glued it to the fuse doubler. I also installed the 1/4" balsa cross brace. The next step will be to sheet the top of the cowl with 1/8" balsa. I figured I would go ahead and mark the thrust line on the firewall before the sheeting was installed. Marking the firewall is not mentioned yet but this seems like the last chance I have before the sheeting would interfere.
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Old 09-25-2004, 03:09 PM
  #47  
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Default RE: OMP Hybrid "My Build"

Just a quick update. While building the removeable canopy, I ran out of 1/4" x 1/4" balsa stick. Working 12 hour days makes it difficult to get to the hobby shop. Will probably be a week or 2 before I can get some. Will resume posting then.
Old 09-26-2004, 10:38 PM
  #48  
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Default RE: OMP Hybrid "My Build"

Well, I scratched up enough 1/4" scraps to assemble the canopy.
Assembling the canopy is a little more difficult than it had to be.
Using 2 sheets of 3" balsa, you have to cut out 6 pieces from templates on the plans. Glue them together to make the 2 canopy sides. The ends are glued to formers and 1/4" bracing is installed. I'm not sure why these parts were not laser cut. It would have been much easier and probably would have been a nicer job. Here's some pics. The last step in fuse construction is to install 2 1/4 x 1/4" braces in the cowl and sheet the bottom. I have no more 1/4" stock so it will have to wait.
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Old 09-29-2004, 10:01 AM
  #49  
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Default RE: OMP Hybrid "My Build"

Construction continues.
I added a small ply block to where the canopy hold down bolts pass through the fuse. The bolts pulled through the balsa too easily. Pic 1

Next was constructing and installing the vertical stab. This was just a straight up stick construction with 1/16 balsa sheeting. It is glued to the rear of the fuse. Simple steps and all turned out well.
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Old 09-30-2004, 09:48 AM
  #50  
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Default RE: OMP Hybrid "My Build"

WHAT DO YOU THINK ABOUT A ZDZ 60 RC ON THIS BIRD??

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