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RE: WACO YMF - 2/6/2010 1:12 AM   
nine o nine


 

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RE: WACO YMF - 2/6/2010 2:14 AM   
PanheadAndy


 

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Status: offline 		I read a post the other day here about having planes all over the garage.I know you guys have been at this a long time and probably have great storage ideas worked up but i thought i'd share the one i came up with.These can be made for a few bucks worth of materials and work very well for smaller planes.They can be made of bigger pipe for heavier planes(the biggest i have in one is about 18 pounds).The ones in the pics were made with 1" PVC and the legs are covered with foam pipe insulation.They are bolted to my garage ceiling and have proven to be very durable.I figure anything that gets them up out of harms way for next to nothing in cost is a good thing.

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< Message edited by PanheadAndy -- 2/6/2010 3:26 AM >

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RE: WACO YMF - 2/6/2010 5:29 PM   
Stickbuilder



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quote:

ORIGINAL: PanheadAndy

I read a post the other day here about having planes all over the garage.I know you guys have been at this a long time and probably have great storage ideas worked up but i thought i'd share the one i came up with.These can be made for a few bucks worth of materials and work very well for smaller planes.They can be made of bigger pipe for heavier planes(the biggest i have in one is about 18 pounds).The ones in the pics were made with 1'' PVC and the legs are covered with foam pipe insulation.They are bolted to my garage ceiling and have proven to be very durable.I figure anything that gets them up out of harms way for next to nothing in cost is a good thing.


I don't keep mine in the Garage. My Beautiful Wife lets me hang them (hers anyway) in the house. We have airplane rooms.

Bill, Waco Brother #1

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RE: WACO YMF - 2/6/2010 5:40 PM   
skipb


 

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In your opinion who has the best plans and or kit fora 1/4 scale Waco? I have an OS 5 cylinder looking for a good home.

Thanks,

Skipb

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RE: WACO YMF - 2/6/2010 6:21 PM   
WacoNut



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quote:

ORIGINAL: skipb

Bill-

In your opinion who has the best plans and or kit fora 1/4 scale Waco? I have an OS 5 cylinder looking for a good home.

Thanks,

Skipb

Barth has a 25% kit available and I have heard good things about them. AMR is developing a 27% for release this year( I am currently building their 33% and it is a nice kit). I have built a 25% from Pepino plans and don't recommend them unless you are into self punishment. Too many things wrong with the plans to go into. If you do decide to build from the Pepino plans drop me a PM and I will tell you everything that needs to be corrected and I will send you the correct rib drawings(I had to correct the ribs). Be warned you will spend more $$$ building the Pepino than just biting the bullet and buying the Barth kit.
Hope this helps!!
Anthony


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RE: WACO YMF - 2/6/2010 7:45 PM   
skipb


 

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Status: offline 		Anthony-

Thanks for the input and insight. I had totally forgotten about the Barth kits, I know they are very good. Their 1/4 should be about right size for my radial, just need to settle in on a colour scheme and how far I want take it. (Detailing wise) Once again thanks for the input.

Skipb

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RE: WACO YMF - 2/6/2010 7:59 PM   
reyn3545



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Status: offline 		Quick question on the Pepino plans... wing incidence

What is the correct incidence? If I remember, my top wing is about 1 degree up on the leading edge. Also, I guess the lower wing should have about the same angle as the horizontal stab?

My plane is set up with a dowel going from the elevator servo, back to a bellcrank that essentially reverses travel and lowers the shaft height to below the horizontal stab. On the only flight I've made so far, the only major adjustments I had to make was to add a ton of down elevator to maintain level flight. Inspecting the elevator setup after the flight, I found a sloppy 1/4 scale servo driving the elevator, and additional slop in the bellcrank. Both have been replaced or repaired now, and I'm just hoping that removing the slop also removed all of the down trim that I had to use.

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RE: WACO YMF - 2/6/2010 10:33 PM   
WacoNut



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Status: offline 		The Pepino plans call for +1 top and bottom wing.
From what I have been reading most guys have to use excessive down trim for level flight and this seems to be induced by a tail heavy condition. The Waco should be balanced ahead of the rear spar on the top wing, the plans show to balance on the rear spar.
Anthony

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RE: WACO YMF - 2/6/2010 10:41 PM   
reyn3545



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Status: offline 		Thanks.. I'll have to take a look at the CG. It seemed to fly nicely once I got it trimmed, but the amount of down trim did seem excessive. My first thoughts as it kept pointing nose up were that it acted like a tail-heavy 3D plane, and I was wondering if I would get it down in one piece... then after a lot of trimming, it seemed to just float around nicely, at any speed.

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RE: WACO YMF - 2/6/2010 10:46 PM   
Stickbuilder



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Status: offline 		Skip,

If I were going to build one tomorrow, it would be the Barth version. Once Michele brings out the 27%, we'll see. Right now, I'd say the best plan is the one that Dick Watz and I are working on. It is a 27% version as well, and is drawn from the original WACO prints. Not ready as of yet, but we'll see.

Bill, Waco Brother #1

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RE: WACO YMF - 2/6/2010 10:50 PM   
Hinckley Bill


 

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Status: offline 		That's odd.............

Just checked out my Pepino plans and they're showing + 2 deg incidence on the top wing and 0 deg incidence on the bottom............did this measurement depend on what year the plans were printed (experience changing them over the years)?

Oh, measured CG on my plans at 6 3/4 from LE of top wing

Oh and plan indicates +1 1/2 deg incidence on stab


Bill

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RE: WACO YMF - 2/6/2010 10:55 PM   
skipb


 

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Status: offline 		Bill-

Not to put any undue pressure on you, but is there a time frame for the completion of these plans?

Skip

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RE: WACO YMF - 2/6/2010 10:57 PM   
reyn3545



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Status: offline 		I've got the plans down in the basement, I'll have to check the dates and info. they showed the CG about an inch or so in front of the rear cabane mount, but I don't remember where that was with respect to the rear spar.... I would think that the mount would attach to the wing right about the rear spar.

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RE: WACO YMF - 2/6/2010 11:00 PM   
Hinckley Bill


 

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Status: offline 		Just measured on the plans ....

From the center line of the rear cabane support to the CG was 1 1/8".... and the cabane support sits right on the rear spar.


Bill

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RE: WACO YMF - 2/6/2010 11:10 PM   
reyn3545



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Status: offline 		Yep.. I checked and mine are the same. the plans show a 12/1987 date, but other than that, they don't show any revisions.

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RE: WACO YMF - 2/6/2010 11:41 PM   
Stickbuilder



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quote:

ORIGINAL: skipb

Bill-

Not to put any undue pressure on you, but is there a time frame for the completion of these plans?

Skip


With me going back into gainful employment, and Dick's schedule, I would not hazard a guess. Probably sometime this year, but no promises.

Bill, Waco Brother #1

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RE: WACO YMF - 2/6/2010 11:43 PM   
Stickbuilder



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quote:

ORIGINAL: reyn3545

I've got the plans down in the basement, I'll have to check the dates and info. they showed the CG about an inch or so in front of the rear cabane mount, but I don't remember where that was with respect to the rear spar.... I would think that the mount would attach to the wing right about the rear spar.


Why not just measure the mean average chord, and set the center of balance at 26-28%of that. That normally puts the center of balance at about mid point of the front cockpit.

Bill, Waco Brother #1

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RE: WACO YMF - 2/7/2010 12:57 AM   
reyn3545



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Status: offline 		Sounds too scientific for a sales guy to understand! Oh, and the guy that built mine didn't see a need for the front cockpit.

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RE: WACO YMF - 2/7/2010 2:11 AM   
Stickbuilder



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ORIGINAL: reyn3545

Sounds too scientific for a sales guy to understand! Oh, and the guy that built mine didn't see a need for the front cockpit.


Trust me on this. Just jack up the tail until the model is level. Place a framing square on the table and against the leading edge of the top wing. Make a mark on the at the point of the square. Move the square to the trailing edge of the bottom wing, and again make a mark on the table. Measure the distance between the two marks. This is the Mean aerodynamic chord measurement. Do some simple math to find 26 - 28% of that figure. That is your correct center of balance.

Bill, Waco Brother #1

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RE: WACO YMF - 2/7/2010 2:28 AM   
reyn3545



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Status: offline 		That sounds simple enough, even for a sales guy. I guess it's 26-28%, measured back from the leading edge?

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RE: WACO YMF - 2/7/2010 2:58 AM   
mrdhud



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Status: offline 		Bill, I forgot to tell you I sure missed two old scale guys this month. Hope it not permanent.

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RE: WACO YMF - 2/7/2010 11:00 AM   
Stickbuilder



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quote:

ORIGINAL: reyn3545

That sounds simple enough, even for a sales guy. I guess it's 26-28%, measured back from the leading edge?


You got it.

Bill, Waco Brother #1

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RE: WACO YMF - 2/7/2010 11:02 AM   
Stickbuilder



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ORIGINAL: mrdhud

Bill, I forgot to tell you I sure missed two old scale guys this month. Hope it not permanent.


Dan,

I don't know why it is not in there. I heard from Gordon Banks (used to be the editor and publisher) and they have told him that they don't require any more articles or columns from him. Maybe we are next. Why not contact them and gripe about it not being there.

Bill, Waco Brother #1

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RE: WACO YMF - 2/7/2010 3:51 PM   
WacoNut



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quote:

ORIGINAL: Hinckley Bill

That's odd.............

Just checked out my Pepino plans and they're showing + 2 deg incidence on the top wing and 0 deg incidence on the bottom............did this measurement depend on what year the plans were printed (experience changing them over the years)?

Oh, measured CG on my plans at 6 3/4 from LE of top wing

Oh and plan indicates +1 1/2 deg incidence on stab


Bill

My plans are the same, I was going off of memory and it isn't what it used to be . I have my wings set at "0" on the bottom and +1 on the top. I set the Stab to +2 and I also made the incidence adjustable on the top wing of my Pepino Waco. I haven't flown it yet but it will take flight this spring before my 33% gets a go.

Later!!
Anthony

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RE: WACO YMF - 2/7/2010 4:17 PM   
mrdhud



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Status: offline 		Call out to all Brothers

If you’re a reader of RC Report you’ve seen that Dick & Bill’s column Two old scale guys was missing this month. I hope it was just a mistake and not a permanent thing. I emailed this letter to them and ask the rest of you to do the same in hopes the column won’t be canceled.


I missed two old scale guys this month. I hope youv'e not canceled this column it is the first one I go to and quite frankly the only reason I subscribe to RC Report. The combination of Dick & Bill makes for great reading and I will hate to see there column cut. Please respond with an explanation on the disappearance of these two old scale guys.

Thank you
Dan Hudson
WB 45

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