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Buiding the 33% Waco YMF-5 Barth Modellbau

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Old 07-26-2007, 10:04 PM
  #276
kochj
 
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Default RE: Buiding pics Waco YMF-5 Barth Modellbau

Is that a modification, or is that the way the kit builds?
I have thought about getting this kit...

Justin
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Old 07-26-2007, 10:35 PM
  #277
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Default RE: Buiding pics Waco YMF-5 Barth Modellbau

@kochj

thatĀ“s my own modification. But if You built the origin version, the stab is adjustable
by a screw too, but not pretendable!


@redcesar

IĀ“m anxious, how your baffles are working. I think, it depends too from the air temperature.
I cross my fingers
My second vacations start in september, we donĀ“t travel to anywhere, and that means:
building, building and building


Regards

Bernie
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Old 07-29-2007, 08:06 AM
  #278
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Default RE: Buiding pics Waco YMF-5 Barth Modellbau

Hi guys,

here again a little report of building my Waco. I would absolute have the belanced rudder, and I did cut it,

you can see it on the first pic. At the next pic is the square tube to see, itĀ“s integrated in the nose of the elevator.

At the next is to see the cut out of the tail fairing, I had to be very careful, because I had only one try, if it fails,

the part would be lost. But I had luck, all went good and it fitĀ“s.

At the last pic you can see the drive shaft of the elevator.

Regards
Bernie
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Old 08-03-2007, 02:25 AM
  #279
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Default RE: Buiding pics Waco YMF-5 Barth Modellbau

Nice pictures Bernie I like your work on the Waco.

Yesterday was the wether great so I take the Waco to the field. I am now become litle bit use to the plane.

I put a litle video on YouTube.

http://www.youtube.com/watch?v=VEVcq11ZRNs

Regards,
Cesar.
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Old 08-03-2007, 02:32 AM
  #280
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Default RE: Buiding pics Waco YMF-5 Barth Modellbau

That prop-sound[:-]

Nive vid!

Greetz.
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Old 08-03-2007, 06:30 AM
  #281
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Default RE: Buiding pics Waco YMF-5 Barth Modellbau

Wow,
thatĀ“s great, I love this plane! Very good flight, the way she make the turns and the rolls[sm=thumbup.gif][sm=thumbup.gif][sm=thumbup.gif]
And the landing, very smooth, good done....compliment. That prop sounds really good!
Very good video, I had to look it triple. I wish, my Waco would be ready just now!

What about your cooling problem, does it still existĀ“s?

IĀ“m now busy with making the servo and stearing wires for the rudder and tail wheel. The tail wheel is driven directly from the servo,
because when I remove the stab for transport, I must not mount and demount the wires for the tail wheel.
But in the end of the fuse, thereĀ“s not a lot of space for the wires, I have to drill some wholes.
In my mind is growing a plan, to make the rear cockpit including the windshield takeoutable, for better access to the RC Components.
How are you thinkin about this?

Regards
Bernie
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Old 08-03-2007, 04:19 PM
  #282
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Default RE: Buiding pics Waco YMF-5 Barth Modellbau


Quote:
ORIGINAL: BigBoy99

What about your cooling problem, does it still existĀ“s?

IĀ“m now busy with making the servo and stearing wires for the rudder and tail wheel. The tail wheel is driven directly from the servo,
because when I remove the stab for transport, I must not mount and demount the wires for the tail wheel.
But in the end of the fuse, thereĀ“s not a lot of space for the wires, I have to drill some wholes.
In my mind is growing a plan, to make the rear cockpit including the windshield takeoutable, for better access to the RC Components.
How are you thinkin about this?

Regards
Bernie
Hi Bernie,

Take good care about the choice of strength of the two springs you got to use for the tailwheel dont take them to weak because with a litle side wind when you taxie the tail get out of course.

The cooling problems are over but the aluminium baffles where no success they rip appart because of the vibration.

I have now made two air guides fixed inside the cowl made of lexan that guides the air to the cillinders and that works oke to me.

It is indeed a good idea to make the entrance to your RC better accessible, I have not done that and with my big hands through the cockpit pffff. I have learn now how to fix a ty-rap with one hand.

I have placed my video also on photobucket and I think the quality is a litle bit better.

http://s15.photobucket.com/albums/a3...acokort1-1.flv

Cesar.





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Old 08-04-2007, 02:22 PM
  #283
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Default RE: Buiding pics Waco YMF-5 Barth Modellbau

Hi Ruud and others,

my last work of the past week was to install the stearing for the rudder and the tail wheel.
The tail wheel drive is direct from the servo, not from the rudder, because itĀ“s easier to mount the
pretendable stab, I must connect only the wires for the rudder. The first springs where too soft and
I had to change them.

The wires are 1,3mm cevlar and strong protected against abrasion. They have a breaking load of 111kg.
The carbines are from the fisher shop with a breaking load of 40kg.

The whole 4 lines I can set under tension with the one screw in the front of the servo-sledge.
Now I can play guitar on this lines, so much they are under tension.

See self:



Regards
Bernie
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Old 08-07-2007, 01:48 PM
  #284
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Default RE: Buiding pics Waco YMF-5 Barth Modellbau

Hi all,

After about 12 flights I notice that the landing gear on my Waco is verry jumpy, If the landing is not 100% you get verry quick a jumpy landing. Maybe are my landing skills not so good but the airplane bounces up also as I put it on the ground so soft as possible I nottice that today after alot of landings.
but I think that I can improve the suspension on the landing gear.
Now it is only a spring that do the work which is I think not enough for a model with a weight of aprox 20 KG. The spring that came in the kit is I think much to strong and to short.


So the first thing I do is put a longer and softer spring in the fuse.
But I want also something with a shock absorber, Maybe a shock absorber that is used in 1/4 scale cars.

Who can help me out and give me some idears.

Regards,
Cesar.

Also I nitice that the suspension is not independently, if one wheel hit the ground the spring do not work.

I think I am going to build two springs in the fuse.

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Old 08-07-2007, 02:57 PM
  #285
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Default RE: Buiding pics Waco YMF-5 Barth Modellbau

Hi Ruud,

the first that come up to me is......your Waco is to light.......hahaha, it was a joke

That was my first impression, when I saw this spring first time, it looks very strong. But if you want to make a longer and softer spring,

youĀ“ll expose, that the landing gear will be bent. The suspension way is than longer!

The shock absorbers from the RC cars are in my opinion constructed, to absorb a push movement. in this case you only have a pull movement,

but in this subjekt IĀ“m not a specialist, thatĀ“s only my first mind.

Best is, to contact Peter Barth, what to do.

Did you cut out extra because of this the front lower fuse section? You canĀ“t have enough control and service hatches at this plane,

and I will regard it at my Waco.

Best wishes for a good solution of your prob


Bernie
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Old 08-07-2007, 03:33 PM
  #286
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Default RE: Buiding pics Waco YMF-5 Barth Modellbau

Hi Bernie,

The importend thing to me is that the suspension is not independently.
I have got the Waco upside down on the ground and if I put down one wheel the only thing wat is happened is that where the endpoint of the axle is it will pull side ways in the wooden blok.


I think I cut the wire in the middle and attach two springs to it and mount them in the fuse.

Cesar.



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Old 08-07-2007, 04:46 PM
  #287
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Default RE: Buiding pics Waco YMF-5 Barth Modellbau

Cesar,

Century Jet, http://www.centuryjet.com/webstore/m...roduct_ID=1016 , has Landing Gear for the Gensis Waco in 1/3 scale, as you probably know, that operates in the same way the full size does (oleo struts). As they say "fantastic gear" with a fantastic price, about $800 US for the Mains and Tailwheel.

Your plan with the two springs is much more economical and should not be hard to do. Looking good in the video.
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Old 08-07-2007, 10:46 PM
  #288
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Default RE: Buiding pics Waco YMF-5 Barth Modellbau

I mean, when you take this solution, you will have probs with the crossing of the two wires.

What is, when you make the suspension outside of the fuse like this:


Regards
Bernie
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Old 08-08-2007, 12:42 AM
  #289
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Default RE: Buiding pics Waco YMF-5 Barth Modellbau

Bernie, Cesar,

If the 2 wires are staggered slightly, fore and aft, the scale look will still be retained when viewed from most angles.

With spring in the middle of the inner strut, the scale look will be gone. The struts are pretty thin.

The inner struts on the full size just pivot a little with the gear, while all the shock absorbing is done in the main struts, only 4" (10 cm) travel, not much.
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Old 08-08-2007, 08:47 AM
  #290
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Default RE: Buiding pics Waco YMF-5 Barth Modellbau

Maybe not the most elegant solution but I have got the same in the Pitts "16,5 Kg" from Weiershauser and that works fine so i give it a try.

I can adjust the tension in practice and the suspension is verry smooth and now independently!!
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Old 08-08-2007, 01:37 PM
  #291
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Default RE: Buiding pics Waco YMF-5 Barth Modellbau

I think, your first suggestion is better, no, it looks better.

My suggestion is, to make a block, alu or hard plastic, drill two holes in an angle of 45Ā° cross with a distance of 2 mm one to the other

and fix it with 2 screws in the fuse. But you can see it better in the drawing I made, see here:


Regards
Bernie
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Old 08-08-2007, 04:35 PM
  #292
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Default RE: Buiding pics Waco YMF-5 Barth Modellbau

Bernie,

You are right, if the solution works with the elastic rubber bands I wil change that in your design that looks indeed much better.

I have got more things I want to change, nice work for the winter period.

One thing I have to say, I have got now about 15 flights with the Waco and be more crazy about the Waco with every flight . If you fly with it you get a good feeling on the sticks.
It is rather difficult to explain but it flies so solidly, yes for me the finest model I ever own.

Regards,

Cesar.
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Old 08-08-2007, 09:20 PM
  #293
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Default RE: Buiding pics Waco YMF-5 Barth Modellbau

Oh yes,

I believe too, it was a good choice, the Waco.

If your experience with the new suspension is good, I will make this changes too.

When you take progressiv springs, the first way of suspension is soft, and then it gets harder. that protectĀ“s your gear from bent.

Bernie
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Old 08-11-2007, 08:37 PM
  #294
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Default RE: Buiding pics Waco YMF-5 Barth Modellbau

I built the quarter scale Barth Waco and am having some problems with it. Actually, I'm somewhat afraid to fly it for fear of wrecking it, and it's been sitting for two months. Anyway, I want to get it back in the air and need to do a couple of things to it first. I need to add some right thrust because it really wants to torque to the left on takeoff, plus there is a fair amount of right rudder trim. The wheel pants need to be attached better than I did initially. These items I can handle, but I have a question on how tight to make the flying wires. I switched to Kelvar from the steel wire that Peter provided because I was having a serious interference issue. It turned out to be the electronic ignition failing. The last time I flew the plane, both wires (Kelvar) used on the upper wing center section broke. I need to replace them but am wondering if I had over tightened them. I've considered replacing them with steel, but it is a real bear to do the way the plane is setup. Any advice would be appreciated.
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Old 08-11-2007, 11:25 PM
  #295
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Default RE: Buiding pics Waco YMF-5 Barth Modellbau

Hi Chuck,

to your prob with the flying wires I cannot say much, IĀ“m still in the building phase. The Barth wires have a breaking load of 1,6kN I mean.

IĀ“m using cevlar wires for steering the rudder and it have 1,1kN , try stronger cevlar. I would not recommend to us them as fling-wires.

Or change to a 2,4GHZ Radio, there you donĀ“t have interferences.

Torque to the side at take off could have more reasons, your springs of the tailwheel are too soft, side pulling of the engine is not enough, it should

be 1,5Ā° to the right. When you say, it torques to the left, you have to increase the side pulling, my opinion.



Regards

Bernie
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Old 08-12-2007, 02:00 PM
  #296
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Default RE: Buiding pics Waco YMF-5 Barth Modellbau

Hi guys,

I hope you all had a beautiful weekend, I spend my time in the catacombs by my waco

Now I made the cockpit to take out for better access to the RC components and other things.These own constructions costs a lot of time.

My wife said, it looks like a bird house.... ......women

The plywood of the deck covering is very thin, so I made a strengthening around the cutting edge.

The cockpit will be saved by two screws, one in the instument panel and in the rear one under the headrest.

here the pics:


Regards

Bernie
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Old 08-12-2007, 02:31 PM
  #297
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Default RE: Buiding pics Waco YMF-5 Barth Modellbau

Beautiful work! I have learned a lot from your many photos. Thanks!
Charlie
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Old 08-16-2007, 02:57 PM
  #298
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Default RE: Buiding pics Waco YMF-5 Barth Modellbau

Hi Ruud,

how is your progress with your landing gear?



@ByLoudDesign

Hi Charly, thanks for the flowers reading this, is like honey!


Regards

Bernie
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Old 08-16-2007, 03:35 PM
  #299
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Default RE: Buiding pics Waco YMF-5 Barth Modellbau

Too many people are not able to admit there are those that can really get the job done admirially! Fine craftmanship is a rewardable attribute! I hope I can glean enough from all the wonderful projects that are displayed here on RCU. I have taken my Goshawk back to the drawingboard a couple of time after seeing some of the work do.
Charlie
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Old 08-19-2007, 03:08 AM
  #300
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Default RE: Buiding pics Waco YMF-5 Barth Modellbau


Quote:
ORIGINAL: BigBoy99

Hi Ruud,

how is your progress with your landing gear?
Hi Bernie,
I am back from a short holiday in Austria "Nauders" and I have made not yet a test fight with the renewed landinggear. Maybe I test it this week if the wether is ok and I wil tell you the results.

Your removeable cockpit looking good Bernie.

Cesar.
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