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OMP Hybrid "My Build"

Old 01-12-2005, 12:29 AM
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Default RE: OMP Hybrid "My Build"

Tlg1. I purchased the nylon wing nuts also. That was my original intent. Actually, I was going to loctite the nylon bolt into the rib and cut the head off so I didn't have to screw the whole bolt in. It just looked a little tight. However, the hardware store didn't have nylon bolts and I didn't want to drive all the way to the hobby shop for 2 bolts, so, I went with the studd and lock nut.

Ordered the dubro pull pull and a SWB double servo arm. Should be here friday. Will also be picking up the 4-40 threaded rod. So, this weekend I should have functional tailfeathers.

My ZDZ 60 arrived yesterday. I bought it used. According to the fellow that I purchased it from it has 2 gallons through it. I sent it to RC Showcase for inspection just to make sure. I got the ZDZ 60 with falcon ignition, bisson muffler (new), original muffler, and tru turn spinner for 400.00 shipped. Not a bad deal. It looks like I will need 1/4 - 1/2" standoffs.

Did any of you guys need to incorporate any thrust into the engine?

I will post pics soon.
Old 01-12-2005, 02:57 AM
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Default RE: OMP Hybrid "My Build"

Mine needed a little up thrust, but it could just be that I find a little uptrust make hovering easier.
Old 01-12-2005, 07:32 AM
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Default RE: OMP Hybrid "My Build"

TLG1, the nylon wingbolt setup is the ticket. You don't need massive metal bolts to hold the wings on these planes, or any other plane for that matter. Not really any outward force on wings. Mostly there for anti-rotation. I use the nylon 1/4-20 hex head bolts and a socket wrench. very quick and easy. I think the wing nut trick is even better though. I'll have to try that next time.

Typically you'll always need about 2-3 degrees right thrust on prop planes. This seems to work fine on the Hybrid as well. Be sure to incorporate the offset when mounting your engine so it still comes out roughly in the middle of the cowling.
Old 01-12-2005, 09:36 AM
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Default RE: OMP Hybrid "My Build"

crash90 glad to hear you now have a power plant - the zdz60 will be tons of power for this plane
how wide is the bisson muffler will it fit in side the cowl - i think my standoffs are about 2" long
hope it works great for you - the reason i like the nylon bolts with the wing nuts is that no tools are required to bolt on the wings & you can twist a nylon bolt in half with a wrench or ratchet i know i have done it
i put no right thrust in my hybrid but i only have about 11 flights on it 1 on test day in the fog and 10 on it breaking in the motor short 5 to 10 min flights it does not act like it needs much trimming but when i can spend some time on it i will know for sure
Old 01-12-2005, 09:57 AM
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Default RE: OMP Hybrid "My Build"

crash90 there is the lightest tail wheel bracket i know of that you do not need to hook to your rudder control linkage it uses a spring that hooks to the bottom of the rudder and it is a castering type wheel works greathttp:

//www.hobbiesr.com/sul/sul-136/sulsS861.htm
Old 01-12-2005, 11:56 AM
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Default RE: OMP Hybrid "My Build"

Agreed. No need for steel studs. Longer version of the story. I guess that with building the wings on a twisted work bench, the root ribs were not perfectly straight. I mean, they were perpendicular to the work bench but the work bench was twisted. So, When I slide the wings on, the bolts are real hard to screw in. Mainly the front bolt. That's the whole reason I went with this system. I used steel only because it was easy to find. I considered just installing a dowell into the back and only having a wingbolt on the front. 2 wing bolts is definately overkill. But.....

Will check out the tailwheel. Thanks.
Old 01-13-2005, 09:08 AM
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Default RE: OMP Hybrid "My Build"

crash90 i would use 2 bolts to keep the wing on - the day i put 10 flights on my hybrid i found one wing bolt broken in half - it was not the planes fault it was an old old old rocket city plastic bolt that had been over used and over tightened since i found that i have looked an my plastic bolts and thrown out several of them that is when i came up with the wing nut/bolt system for planes where you need to bolt on plug in wings in narrow fuselages & other wider fuse i do not think i can over tighten this type of bolt by hand - the rocket city bolt had a socket/screw driver type head & i must have been over tightening them
if i were to build another hybrid i would put in a anti rotation pin 1/4" dowel so when you slip the wing on to the spar tube and let go of it it would not rotate before you get a bolt in to it
i would put the dowel about 1" behind the front bolt & then i would drill the dowel and put a clip on it as an extra safety
just letting you know stuff happens and you cant be to safe on wing attach items
Old 01-13-2005, 03:59 PM
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Default RE: OMP Hybrid "My Build"

The Hybrid is designed for two wing bolts per wing. Build per the instructions and you won't go wrong. One bolt and one pin will be very risky for this high performance plane.
Old 01-15-2005, 06:15 PM
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Default RE: OMP Hybrid "My Build"

crash90 how is the build going
if there is and info you need just ask
when will you get your zdz60 back
tlg
Old 01-15-2005, 06:20 PM
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Default RE: OMP Hybrid "My Build"

One of the reason I don't buy kits is because I never finish them.
Old 01-16-2005, 09:13 AM
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Default RE: OMP Hybrid "My Build"

crash90 i do know what you mean - this is the first kit i have built in about 5 years the arfs are so good looking and fly so good & you can buy one for less than what it costs to build - but when you want something like the hybrid the you have no choice - you know i love to build except for one thing - THE DUST - well keep at it you are on the home stretch nowthat it is build and covered think of it as a arf - throw some gear in it and that bad boy zdz60 and get it ready for flying season
Old 01-16-2005, 12:57 PM
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Default RE: OMP Hybrid "My Build"

My hybrid was destroyed.

RIP.
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Old 01-16-2005, 01:25 PM
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Default RE: OMP Hybrid "My Build"

looks good in the photos
sorry to hear about it being destroyed
better luck on your next one
Old 01-16-2005, 03:10 PM
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Default RE: OMP Hybrid "My Build"

LOL. Yeah. I tripped on the extension chord you see on the floor while taking pics. Fell into the plane. Probably repairable but I decided not to.
Old 01-17-2005, 11:07 AM
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Default RE: OMP Hybrid "My Build"

This is a sad story to hear after all your work and problems. I can tell you we built two Hybrids locally here and both were under 17 lbs easy, one at 16.25 lbs. Maybe ARFs are more your future. Send the remains back to OMP, we can find a use for it.
Old 01-17-2005, 12:45 PM
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Default RE: OMP Hybrid "My Build"

Post a picture of the broken plane if it is repairable I will buy it from you and pay you to ship it to me, I want one but am still dragging along with my Yak 54, I do already have all the needed equipment for this plane...
Old 01-17-2005, 02:00 PM
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It's not repairable. You would be better off getting a new one. All I can say is this, when building, follow the instructions. I skipped 2 steps. The first one was when they said to draw a centerline on the root and tip ribs. The second one was when they said to measure the centerlines to make sure the wing is straight and level. I ended up with 2 crooked wings. Go figure. I can say that this bird has no choice but to be an awesome 3Der. I was going to sell the ZDZ60 and buy a 2.6 composite but I may just wait for the Hybrid ARF. Heck, now that I got me a new workbench, maybe I'll buy another kit. NOT.

I hate to leave this thread, i almost feel like we became family over the last few months. LOL
Old 01-17-2005, 02:06 PM
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Default RE: OMP Hybrid "My Build"

Well in that case I am sorry to hear about your loss, you put so much time into building the kit to have it end this way is a real shame, well you made a few friends along the way so it wasnt a total loss....Besides you can post on my build of the Yak 54 79" I will probably be building it for another month or two before I am finished, either way take care, Matt
Old 01-18-2005, 09:50 AM
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Default RE: OMP Hybrid "My Build"

What do you guys think about a single aileron servo right in the middle of the aileron? With the new servos on the market, you certainly don't need 2 servos for torque and I would think that if it was in the middle of the wings you would not have to be concerned with flexing. Just a thought if there is an ARF in the near future.
Old 01-18-2005, 09:54 AM
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Default RE: OMP Hybrid "My Build"

yea, this is a little bit of a let down for me also. I realy wanted to see you being stoked about how the plane flew. We talked you into finishing the thing when the wing problem came up and now it looks to be realy over. well good luck with your next project. I am still thinking about one day owning one of these.

Scott B
Old 01-18-2005, 02:29 PM
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Default RE: OMP Hybrid "My Build"

Yes, one aileron servo would work fine given the new beasts that are out there now. My figures say you need about 200 in oz per aileron. there are several servos out there now that fit that bill. Would be an easy mod to the wing also as the servo bays can be assembled really between any two ribs.
Old 01-18-2005, 02:38 PM
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Default RE: OMP Hybrid "My Build"

Here is a message from my dog Charlie.

Arf Arf Arf
Old 01-19-2005, 08:58 AM
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Default RE: OMP Hybrid "My Build"

crash90 i agree we need a arf of the hybrid it would be a big seller for omp with only 10 to 12 flights on mine it is my favorite plane
Old 01-19-2005, 01:29 PM
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Default RE: OMP Hybrid "My Build"

to anybody that has built this kit. I would like to make a list of things that we would like to see in an ARF if it ever came to be.

I can think of 3 easy mods.
1 Pre Drilled for Robart Hinge Points
2 A center bay for a single aileron servo
3 Hardpoints installed for 8/32 steel control horns


Anything else?

Maybe a pre installed rudder tray with cutouts already done in the fuse for pull pull rudder?
Old 01-19-2005, 01:57 PM
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Default RE: OMP Hybrid "My Build"

servo wire tubes in the rear of fuse for the elevator servo wires - wire tubes in the wing for the aileron servos - gas tank mount for a 24 oz tank at cg or under wing tube - anti rotation pin in each wing with the two wing bolts - removable cowl or removable lower cowl to make mounting diff. motors easer - one extra upper bulkhead half way between rudder and rear of hatch for extra strength

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