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All Forums >> RC Airplanes >> Profile and Fun Flying Planes >> OMP - Ohio Model Products Support Forum >> RE: Hybrid Edge
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RE: Hybrid Edge - 1/6/2008 6:41:06 PM   
outssider


 

Posts: 1121
Joined: 1/18/2002
Status: offline 		so when i receive the kit, check all the wood, find some twisted and/or heavy wood they will send out replacements for free. The 3/8 by 1/2 sticks i got from them were twice as heavy as stock right off the shelf at my local hobby shop. I would have used their's anyway but i am running a da50 and didn't want an extra 1.6 oz in the tail (3, of their 4 ft pieces were 3.1 0z.... 4, 3ft pieces from hobby shop were 1.5 oz)

(in reply to Crash90)
       Post #: 51

RE: Hybrid Edge - 1/6/2008 8:47:21 PM   
Crash90



Posts: 2315
Joined: 10/5/2002
From: Cressona, PA, USA
Status: offline 		I think you'll find that in alot of kits. I know I have. I would love to see competition grade balsa in all of my kits but couldn't imagine what that would cost me. LOL Going to the hobby shop is nice though as you can hand pick all of the wood.
I know alot of people weigh their wood first and try to use the heavier stuff in the front. Me, I just don't have the patience.

< Message edited by Crash90 -- 1/6/2008 8:48:13 PM >

(in reply to outssider)
       Post #: 52

RE: Hybrid Edge - 1/6/2008 10:13:36 PM   
Crash90



Posts: 2315
Joined: 10/5/2002
From: Cressona, PA, USA
Status: offline 		I have 2 questions.
1 I am having a bit of trouble with the wing and the aileron root templates. I can't seem to get the ribs setting flush on both. I would assume that I don't have them sitting on the plans properly.
The wing root template I have the root end flush with the outside of the R1 and just far enough front that the entire rib is sitting on it. (just enough so WS2 can be fitted from underneath without hitting the template) At this setting the aileron TE is about 1/16" to low for the template. I can slide the ail template a bit towards the root but then it isn't quite long enough to reach the tip. I guess the question is. As long as the ribs centerline is parallel to the building board I can do without the ail. template?

2. I am also converting to 1 ail servo. Can I use the lite ply hardwood support that comes with the kit or should I find a way to beef this up also? If so, any ideas on how? Thanks guys.

(in reply to Crash90)
       Post #: 53

RE: Hybrid Edge - 1/6/2008 11:41:35 PM   
craigteffe



Posts: 504
Joined: 2/7/2003
From: Maryville, TN, USA
Status: offline 		What i did on mine was i used the doublers on both sides of the two ribs that hold the hardwood rails and then i epoxied the hardwood rails to the ribs and sheeted both sides of the bay. on the aileron i made diagonial bracing between all ribs out of 1/16 sheeting to keep it from flexing, I also epoxied the center point ply braces in place and put triangle stock on the edges, I used poly glue for my hardpoints.



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Craig

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       Post #: 54

RE: Hybrid Edge - 1/7/2008 1:54:39 PM   
AFSalmon



Posts: 3822
Joined: 5/24/2002
From: Beavercreek, OH,
Status: offline 		- Post edited for clarification -

After you pin the main spar down, glue the ribs at 90 degrees to the spar, position the rear alignment jig, and position the rib trailing edges on the jig. I like to tack glue the ribs to the jig with med CA and always use some weight evenly distributed on the wing as I apply sheeting. The use of evenly distributed weights really helps to keep the wing firmly on the building board to assure proper alignment and prevention of twisted wings. Hope this helps!

< Message edited by AFSalmon -- 1/16/2008 1:14:37 PM >

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Ohio Model Planes, Team OMP Captain

(in reply to craigteffe)
       Post #: 55

RE: Hybrid Edge - 1/15/2008 11:38:53 PM   
craigteffe



Posts: 504
Joined: 2/7/2003
From: Maryville, TN, USA
Status: offline 		Just finished up on my wings, set the incidence, installed the tank mount,installed rudder servo mount and throttle servo mount. Need to cut slots for the rudder cables. Waiting on standoff so i can cut the side out for muffler. Then its on to filling and final sanding. Then covering.


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Craig

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       Post #: 56

RE: Hybrid Edge - 1/16/2008 12:40:00 AM   
Crash90



Posts: 2315
Joined: 10/5/2002
From: Cressona, PA, USA
Status: offline 		Craigteffe. Great. Deciding on a scheme is alwys the hardest part for me.
I want to ask you something. Looking at your pic, it looks like your firewall is leaning forward. Is that your method of incorporating down thrust? Also, setting incidence? I assumed that was done near the beginning of construction when R1 was used as a template to mark the wing bolt holes in the fuse sides.



< Message edited by AFSalmon -- 1/16/2008 1:15:43 PM >

(in reply to craigteffe)
       Post #: 57

RE: Hybrid Edge - 1/16/2008 12:14:01 PM   
craigteffe



Posts: 504
Joined: 2/7/2003
From: Maryville, TN, USA
Status: offline 		Its not leaning forward but i did build right thrust into it. I do not like to use shims.



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Craig

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       Post #: 58

RE: Hybrid Edge - 1/16/2008 1:08:23 PM   
AFSalmon



Posts: 3822
Joined: 5/24/2002
From: Beavercreek, OH,
Status: offline 		Crash, the ribs are still always at 90 degrees to the building board as you are building. Disregard what I was saying about the spar. I got myself confused with the wing construction on the 80" Edge profile. On that plane the spar does not follow exactly the peak thickness position of the ribs. It is very close but due to the taper on the wing the spar tracks a slightly different line. So what this means is when the ribs are sitting flush on the board and the jigs, the spar will be slightly raised off the board as you progress towards the tip in order to be fully seated into the ribs. On the Hybrid Edge I did follow the peak thickness of the ribs with the spar! I'll go back and fix those previous postings. Dang I must be off this week!

< Message edited by AFSalmon -- 1/16/2008 1:16:37 PM >

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Mike (Salmon) Pilkenton, Chief Slab Designer
Ohio Model Planes, Team OMP Captain

(in reply to craigteffe)
       Post #: 59

RE: Hybrid Edge - 1/16/2008 1:50:04 PM   
T u r d


 

Posts: 53
Joined: 3/6/2005
From: Caledon, ON, CANADA
Status: offline 		what about right thrust, i am at that point in the construction

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       Post #: 60

RE: Hybrid Edge - 1/16/2008 7:45:13 PM   
Crash90



Posts: 2315
Joined: 10/5/2002
From: Cressona, PA, USA
Status: offline 		Thanks Mike. I thought you were confused but I didn't want to say it.

As for right thrust, I just placed a washer between the firewall and the standoffs on the 2 left standoffs. I would guess that 2 washers would probably get you closer but I didn't want to over do it.

(in reply to T u r d)
       Post #: 61

RE: Hybrid Edge - 1/16/2008 10:57:05 PM   
T u r d


 

Posts: 53
Joined: 3/6/2005
From: Caledon, ON, CANADA
Status: offline 		I some times put 3 degrees of right thrust in the firewall , washers seem to put strain on the motor mount lugs on a D? 50 cc engine

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       Post #: 62

RE: Hybrid Edge - 1/17/2008 1:40:19 AM   
Crash90



Posts: 2315
Joined: 10/5/2002
From: Cressona, PA, USA
Status: offline 		With 3 washers, I can see your concern. I once built a Lazy Bee, I incorporated right thrust by building a mounting plate. I did it with a protractor. If you took a piece pf ply 3/16 thick. Cut it 4 1/2" square. Use a belt sander, lay it flat on the sander and sand it so that it tapers from 3/16 down to 0. This will give you 2 degrees of thrust or very close to it. That will give you a solid mounting surface for your stand-offs.


(in reply to T u r d)
       Post #: 63

RE: Hybrid Edge - 1/18/2008 1:05:11 PM   
AFSalmon



Posts: 3822
Joined: 5/24/2002
From: Beavercreek, OH,
Status: offline 		The way to prevent strain or bending the mounting bolts when offsetting the engine is to put the offset plates or tapered washers not only between the engine and firewall but also on the backside of the firewall and nut. This way the bolt stays straight. The wedge on the backside would be reveresed from the front side.

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Mike (Salmon) Pilkenton, Chief Slab Designer
Ohio Model Planes, Team OMP Captain

(in reply to Crash90)
       Post #: 64