RE: Buiding pics Waco YMF-5 Barth Modellbau
ORIGINAL: BigBoy99 Hi all together, @Steve I´m so glad, to have a big room to built my waco, no problem to fit the wings and the fuselage together on my building-board. If you built in your garage, isn´t it cold in winter? Edit: oh, sorry, you lucky guy are living in California :) :) :) What about your arm, are you well and healthy? Today I have the problem, from the lower wing the right half is a little bit warped, because I put it from the building-board, to make planking the nose area. After this, I realized, something is wrong, the front wing-end is 1/3 inch higher, than the rear wing-end. I fixed it on the board under tension and sprayed the nose with water, I think, my first prognosis is, it works. I have to wait, until it gets dry. @RCWalker I began with both wings, the upper is nearly ready and the lower is in progress. When I start to built the fuselage, you will see photos above. @ Redcesar What about your maiden, some news? Regards Bernie [ul][*] [*] [*] [/ul] |
RE: Buiding pics Waco YMF-5 Barth Modellbau
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Hi all,
The waco is, minus a few litle things ready for maiden but last week i get my hands on a Piper Pawnee Flying ready. So I am a litle bit busy with the Pawnee. Yesterday I Flew it for the first time and all wend right. After i finished the litle things on the Waco I go check the engine and after 1 or 2 Ltr fuel on the ground for testing i wait for a good day and go for the Maiden. Cybertom, The Waco weight 18,5 Kg and that is with a MVVS 116 with canisters (total weight 4 kG) in the fuse. I dont no the weight of the Genesis Waco. Bernie, Maybe you can correct a litle rotation in your wing (1 cm) with the flying wires and N struts. But as you say, with water and under tension is a good solution to fix it. After you spray it with water you can heat it with a heat gun that weakens the fibers in the wood a bit. Cesar. |
RE: Buiding pics Waco YMF-5 Barth Modellbau
Everyone,
Thanks for the fast replies. 18.5Kg converts over to 40.8lbs and the other weighs in at 47lbs. So we are certainly well below 50lbs even with a RCS 215 radial. RCS 215 radial vs. RCS150 radial Do you find that the RCS 215 radial engine overpowers this size aircraft? I have seen a Balsa USA Stearman that weighs 50lbs. jump off the ground like a jack rabbit with the 215. Normal flying was around 1/4th throttle. I noticed that RCS now has the 150 which might be a better match. Potentially it can shave off another 2lbs of weight and will run at a higher rpm which seems to smooth those engines out. Your thoughts... RCS 215 32x12 prop at 5000rpm=74lbs of static thrust Weight=12.2lbs RCS 150 32x12 prop at 4700rpm=50.64lbs of static thrust Weight=9.8lbs |
RE: Buiding pics Waco YMF-5 Barth Modellbau
ORIGINAL: Cybertom Everyone, Thanks for the fast replies. 18.5Kg converts over to 40.8lbs and the other weighs in at 47lbs. So we are certainly well below 50lbs even with a RCS 215 radial. RCS 215 radial vs. RCS150 radial Do you find that the RCS 215 radial engine overpowers this size aircraft? I have seen a Balsa USA Stearman that weighs 50lbs. jump off the ground like a jack rabbit with the 215. Normal flying was around 1/4th throttle. I noticed that RCS now has the 150 which might be a better match. Potentially it can shave off another 2lbs of weight and will run at a higher rpm which seems to smooth those engines out. Your thoughts... RCS 215 32x12 prop at 5000rpm=74lbs of static thrust Weight=12.2lbs RCS 150 32x12 prop at 4700rpm=50.64lbs of static thrust Weight=9.8lbs Just my thoughts. One after thought........ you will save about 2 pounds useing the 150 over the 215 but you will loose almost 50% of thrust vs the 215 much better to have way to much then just enough........gives you a margine of safty in tight situations don't you think? |
RE: Buiding pics Waco YMF-5 Barth Modellbau
SoCal Sal,
If the static thrust of the engine is more than the weight of the aircraft then conceivably you could prop hang this airplane with the 150. Now to my way of thinking any airplane that I could prop hang had what I felt was lots of power. I'm guessing that typical biplane putzing around would be around 1/3rd throttle. The only time I could see using full power is possibly on takeoff or during aerobatic loops where I needed to climb straight up, other than that I don't see myself running the 150 anywhere near full throttle. I have heard many of the RCS215 run on video and in person and they all seem to have a distinct miss during the transition from idle to higher rpm. The owners tell me they think its caused by the timing of the electronic ignition. Seems to make sense to me. They idle great, the high end is great, but the transition is rough. So far I have only heard 1-RCS 215 on a test stand that seemed to not exhibit the problem. It could be to that a lots of guys aren't maintaining their engines like they should. But more often than not it's what I have heard. If you could make a short video of your plan flying and post it here for all of us to enjoy that would be great. I would prefer to hope that the engine I buy will run smoothly. I'm just trying to figure out the best way to go. Thanks for all of your feedback and contributions to this thread. The information is very valuable to guys like me who are looking to make the jump to a 33% Bipe. This is the video of the RCS 215 from RC Showcase. It idles beautifully, shows poor transition, but a great top end. This is typical of what I have seen with one exception. [link=http://www.rcshowcase.com/images/engines/rcs/rcsradial.wmv]RCS 215 Radial Engine Video[/link] This is a video of a 1/3rd scale Stearman. Again the engine to my ear sounds pretty choppy: [link=http://www.youtube.com/watch?v=hntXAon3Ins]1/3rd Scale Stearman w/RCS215 Radial Engine Video[/link] Just for comparison, this is my Robart R780. It's not a gasser but it runs the way I expect a radial to run: [link=http://www.cmac.org/video/2004/2004_11_28_stearman/BigPlaneFly.wmv]1/4th Stearman w/R780 Radial Engine Video[/link] |
RE: Buiding pics Waco YMF-5 Barth Modellbau
ORIGINAL: Cybertom SoCal Sal, If the static thrust of the engine is more than the weight of the aircraft then conceivably you could prop hang this airplane with the 150. Now to my way of thinking any airplane that I could prop hang had what I felt was lots of power. I'm guessing that typical biplane putzing around would be around 1/3rd throttle. The only time I could see using full power is possibly on takeoff or during aerobatic loops where I needed to climb straight up, other than that I don't see myself running the 150 anywhere near full throttle. I have heard many of the RCS215 run on video and in person and they all seem to have a distinct miss during the transition from idle to higher rpm. The owners tell me they think its caused by the timing of the electronic ignition. Seems to make sense to me. They idle great, the high end is great, but the transition is rough. So far I have only heard 1-RCS 215 on a test stand that seemed to not exhibit the problem. It could be to that a lots of guys aren't maintaining their engines like they should. But more often than not it's what I have heard. If you could make a short video of your plan flying and post it here for all of us to enjoy that would be great. I would prefer to hope that the engine I buy will run smoothly. I'm just trying to figure out the best way to go. Thanks for all of your feedback and contributions to this thread. The information is very valuable to guys like me who are looking to make the jump to a 33% Bipe. This is the video of the RCS 215 from RC Showcase. It idles beautifully, shows poor transition, but a great top end. This is typical of what I have seen with one exception. [link=http://www.rcshowcase.com/images/engines/rcs/rcsradial.wmv]RCS 215 Radial Engine Video[/link] I have set up my friends 150 it is no different then the 215-250-400 they all require some getting used too and some running in. I also found out that if you can mess with the throttel curve on your transmitter it will help a great deal in the transitioning of the engine. Remember if the stick was a true 1/4 setting that the engine would be running about 12-1400 r.p.m. that is a good idel point. some people see the stick setting and think it is truley 25% of the movment of the carb plate it is not. I set my high end at about one half stick setting and it seems to work the best for me. The low end screw has the most effect on the carb. |
RE: Buiding pics Waco YMF-5 Barth Modellbau
SoCalSal,
Sounds like a whole lot of guys out there could use a tutorial from you on how to properly maintain and adjust their RCS radial engine. It's really good to hear that it can run smoothly with the proper adjustments. I will feel more comfortable when it comes time to plunk down my money. Sad thing is this means 90% of the guys who own them don't know what you do. |
RE: Buiding pics Waco YMF-5 Barth Modellbau
Hi Cesar,
Good to know that your Waco YMF is almost ready for maiden, wish you the best![sm=thumbs_up.gif] I am doing the firewall now, but need to know what is the best way to make the firewall with 1.5 degree right thrust and 0-2 degree down thrust? either the firewall with required angle or keep the firewall straight and make the engine mount box with required angle accordingly? I am planning to use either Saito FA450R3 or G-62 Gaser. Wallace J. Kao |
RE: Buiding pics Waco YMF-5 Barth Modellbau
ORIGINAL: RCWalker Hi Cesar, Good to know that your Waco YMF is almost ready for maiden, wish you the best![sm=thumbs_up.gif] I am doing the firewall now, but need to know what is the best way to make the firewall with 1.5 degree right thrust and 0-2 degree down thrust? either the firewall with required angle or keep the firewall straight and make the engine mount box with required angle accordingly? I am planning to use either Saito FA450R3 or G-62 Gaser. Wallace J. Kao |
RE: Buiding pics Waco YMF-5 Barth Modellbau
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Hi Wallace,
You can also use standoffs. With differend lengths you can produce de right down and side trust. But keep the firewall straight. Cesar. |
RE: Buiding pics Waco YMF-5 Barth Modellbau
Nice setup Cesar! what kind of tubes are you using around the exhaust ducting?
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RE: Buiding pics Waco YMF-5 Barth Modellbau
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ORIGINAL: vasek Nice setup Cesar! what kind of tubes are you using around the exhaust ducting? Hi Vasek, That are drawingcases which i have on the inside coated with thin epoxy resin for a litle bit heat resistant. But the cannisters are 1 cm free off the wall so the air can flow through the pipes for cooling and the air can leave at the undersite of the fuse. |
RE: Buiding pics Waco YMF-5 Barth Modellbau
Thanks to SoCalSal and Cesar,
I will keep the firewall straight with 0-0 degree and use either standoffs for G-62 or engine mounting box for Saito FA450R3 once I decide which engine will be installed on the plane. Thanks to both of you again! Wallace J. Kao |
RE: Buiding pics Waco YMF-5 Barth Modellbau
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here my Genesis 33% Waco, rcs 215cc, Bambula 32-10, 58 pounds .
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RE: Buiding pics Waco YMF-5 Barth Modellbau
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To all Waco lovers.
You may want to see a 40% Waco being built at :http://www.rcuniverse.com/forum/m_5937713/tm.htm Dany www.genesis-rc.com |
RE: Buiding pics Waco YMF-5 Barth Modellbau
Ok Dany the plane looks fabulous! but what i really want to know is did you match the plane color to the red jacket of your lovely GF or did she buy the jacket to match the color of your plane?;)
V. |
RE: Buiding pics Waco YMF-5 Barth Modellbau
Vasek!
Good question! I received so many replies about that "mix" and to be honest, we actually figured it out after the pictures where taken![sm=tongue_smile.gif] Have fun! Dany www.genesis-rc.com |
RE: Buiding pics Waco YMF-5 Barth Modellbau
Hum !! Dany got the best of the World , nice looking wife, ans super scale Waco!!
Piper13 |
RE: Buiding pics Waco YMF-5 Barth Modellbau
Danny,
Hi, my name is Tom. I am a potential customer of yours. I requested and received a Team Genesis WACO DVD last year. I am an acquaintance of Bob Gonzalez who had his Team Genesis WACO in "Top Gun" this year. We spoke about buying your kit in the old "Flair Stearman" thread. I am impressed with both your kit and the Barth Modellbau kit. What improvements have you made to your updated 1/3rd scale WACO kit? What is the typical weight of the finished kit? Which RCS radial engine do you recommend? |
RE: Buiding pics Waco YMF-5 Barth Modellbau
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Hi guys,
here a little report of building my Waco from Peter Barth: The lower right wing is OK, the spraying with water was the right handling, now all is straight and planar. The lower middle part is ready and the lower left half is done at 80 %. The notch in front of the lower left wing is for the landing lights, right of this notch is the hatch for the mounting point of the N-Struts and flying wires. I´m glad, when I´m ready with the wings, I can not see any more ribs( ha ha) Next week I will start with the fuselage Regards Bernie |
RE: Buiding pics Waco YMF-5 Barth Modellbau
Hi all,
Can anyone help me on deciding what the best right thrust and down thrust angles are for Saito FA-450R3 engine on the 1/4 Scale Peter Barth's Waco YMF? I way planning to apply 1.5 degree right thrust and 0 degree for down thrust, but not sure if this is enough for such engine. Bernie, Your Waco is really looking good, can not wait to see pictures of fuselage built up. Are you going to make functional front cockpit door? Wallace J. Kao |
RE: Buiding pics Waco YMF-5 Barth Modellbau
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Hi Wallace,
I don´t built the front cockpit, want to make only a cover over it, like the origin. The door to it will be only hinted. Under the cover you have space for installation. Regards Bernie I need photos of the rear cockpit, with all -Stick, pedals, handgears, so the whole cockpit. Can anybody help me? |
RE: Buiding pics Waco YMF-5 Barth Modellbau
BB,
I may be able to help with cockpit photos after this weekend. There is a Waco Fly In near St. Louis, MO, USA the 14th-17th and if there is an original YMF/UMF, I will get plenty of pictures and will send you copies. I do have cockpit photos of a 1940 UPF-7 that was developed from the YMF/UBF, but want to retake them. Also have some cockpit photos of 2 1932 UBF-2's (2 cockpit tandom) and 1932 UBA (2 seat side x side). |
RE: Buiding pics Waco YMF-5 Barth Modellbau
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pictures!!
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RE: Buiding pics Waco YMF-5 Barth Modellbau
ORIGINAL: RCWalker Hi all, Can anyone help me on deciding what the best right thrust and down thrust angles are for Saito FA-450R3 engine on the 1/4 Scale Peter Barth's Waco YMF? I way planning to apply 1.5 degree right thrust and 0 degree for down thrust, but not sure if this is enough for such engine. The best you can do, write a E-mail to Peter Barth. He can tell you the right amount of side and down trust. mailto: [email protected] Cesar. |
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