RE: Jim Pepino's YMF-5 Waco

RE: Jim Pepino's YMF-5 Waco
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RE: Jim Pepino's YMF-5 Waco - 7/18/2007 9:12:16 PM

JoeAverage

Posts: 140
Joined: 6/7/2007
From: Georgian Bluffs, ON, CANADA
Status: offline

quote:

ORIGINAL: Big_Bird

John, after buying the glass parts and the plans I guess I trapped myself into building the plane. I did get very discouraged after closely examining the plans. However, I'm very glad that I pushed forward and I think this will be a very nice plane when I finish.

Here was my last big project, a 1/3 scale Bucker Jungmeister. It took a second place award in 2004, a first place in 2005 and a second place in 2006 at Bomber Field in Monaville Texas.

Ken, I've gotten bit good by the Bucker bug and I am currently working on the 1/4 scale Platt from RCM plans. That is what brought me to RCU. I really wanted to build a 1/3 scale BU133 but this 1/4 scale is a good model but won't take long. I have a Moser Supermann Kit but I'm just sitting on it for the moment. I was looking at a plan by Model Airplane News for the 1/3 133. Pray tell, what is the origin of your current Champion? I've long admired the Bucker. It's more popular in Europe of course but it has it all. Round engine, double swept wings, the moments, the style and history of course. I bet it must fly like a dream. For me the best reasons not to build the Pepino are the 4 pictures you just posted. What power plant does it use? Thank you, John

(in reply to Big_Bird)

Post #: 126

RE: Jim Pepino's YMF-5 Waco - 7/18/2007 11:37:28 PM

Big_Bird

Posts: 3183
Joined: 12/18/2001
From: Arlington, TX, USA
Status: offline

John, I have been flying in this YMF-5 which is also a low serial number Classic Aircraft. It was about 22 years ago. I can't find my still photos of the plane but I do have the video that I made while taking the ride.

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_____________________________

Ken
WACO Brotherhood #70

(in reply to skylarkmk1)

Post #: 127

RE: Jim Pepino's YMF-5 Waco - 7/18/2007 11:55:19 PM

Big_Bird

Posts: 3183
Joined: 12/18/2001
From: Arlington, TX, USA
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quote:

ORIGINAL: JoeAverage

Ken, I've gotten bit good by the Bucker bug and I am currently working on the 1/4 scale Platt from RCM plans. That is what brought me to RCU. I really wanted to build a 1/3 scale BU133 but this 1/4 scale is a good model but won't take long. I have a Moser Supermann Kit but I'm just sitting on it for the moment. I was looking at a plan by Model Airplane News for the 1/3 133. Pray tell, what is the origin of your current Champion? I've long admired the Bucker. It's more popular in Europe of course but it has it all. Round engine, double swept wings, the moments, the style and history of course. I bet it must fly like a dream. For me the best reasons not to build the Pepino are the 4 pictures you just posted. What power plant does it use? Thank you, John

John, I built two Jungies from Gary Allen's plans that were published by MAN. The first one was completely scratch built and the second one was built from a short kit from Arizona Model Aircrafters. I don't know what the situation will be with the wheel fenders and cowl because Stan's Fibertech has gone out of business. I lost the first one due to a mid air.

It's a very good flying plane. The aerobatic characteristics of the plane can make the pilot look better than he is. Of course, these are the type of aerobatics as flown by the full scale. The engine is a converted Sachs-Dolmar 4.2 cu-in with a CH Ignitions Syncrospark ignition. It will be back down at Bomber Field in the middle of September.

Here is the build thread: http://www.rcuniverse.com/forum/m_1395907/anchors_1395907/mpage_1/key_Bucker/anchor/tm.htm#1395907

< Message edited by Big_Bird -- 7/18/2007 11:59:10 PM >

_____________________________

Ken
WACO Brotherhood #70

(in reply to JoeAverage)

Post #: 128

RE: Jim Pepino's YMF-5 Waco - 7/22/2007 2:47:20 AM

Big_Bird

Posts: 3183
Joined: 12/18/2001
From: Arlington, TX, USA
Status: offline

More progress. This is a part of the construction that I have been dreading. I have been building the upper wing supports.

The first thing was to make a pattern for the shape of the bottom of the center section of the upper wing. For this I used a length of 1/8" solid core solder. This was molded over the bottom of the wing and then laid on the plans that I had previously drawn the modified -1 degree incidence. This was transfered to a sheet of 1/8" balsa, cutout, and glued to the top of the fuselage. Of course, copious measurements were made to insure that all items were "square" with the way I wanted them. Temporary braces were glued to the spacer.

I had built mounting points into the wing for use with 6x32 screws. The struts were made and the brass end pieces were soldered in place with 15% silver solder. It all sounds pretty simple but a lot of hours were spent doing this. You know: check, check, and re-check. Then check again. When I remove the balsa spacer I'll sand and fill the fuselage.

I forgot to mention that the 1/8" solid core solder is excellent pattern material for gaging the size and shape of the struts prior to cutting the actual 5/32" wire. When you get through with one pattern simply straighten the wire out and roll it on a table like you were rolling out cookie dough and it is ready for the next pattern if you haven't cut it too short.

All along I had thought that it would be necessary to glue the struts into the tubes. At this point I don't think it will be necessary because the geometry of both sides prevents the wing from moving laterally. Scott, comments?

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< Message edited by Big_Bird -- 7/22/2007 2:59:57 AM >

_____________________________

Ken
WACO Brotherhood #70

(in reply to Big_Bird)

Post #: 129

RE: Jim Pepino's YMF-5 Waco - 7/22/2007 4:49:09 AM

mango12

Posts: 217
Joined: 3/19/2007
From: duncanville, AL, USA
Status: offline

Ken, it looks like you are well on the way to building yourself a biplane!! I have trial fit the 5/32 wires in place , just to make sure I have them bent correctly, and used the alignment template provided on the plans. This was before I found out how you were setting up your wings ( incidence wise). I am going to try to get back on it this week. I have had my son all month so I haven't covered much ground in the building department, but of course the trade off has been worth it. I'll let you know when I make some progress.
Scott

_____________________________

Scott
Waco Brotherhood #49

(in reply to Big_Bird)

Post #: 130

RE: Jim Pepino's YMF-5 Waco - 7/22/2007 5:41:29 AM

JoeAverage

Posts: 140
Joined: 6/7/2007
From: Georgian Bluffs, ON, CANADA
Status: offline

quote:

ORIGINAL: Big_Bird

quote:

ORIGINAL: JoeAverage

Ken, I've gotten bit good by the Bucker bug and I am currently working on the 1/4 scale Platt from RCM plans. That is what brought me to RCU. I really wanted to build a 1/3 scale BU133 but this 1/4 scale is a good model but won't take long. I have a Moser Supermann Kit but I'm just sitting on it for the moment. I was looking at a plan by Model Airplane News for the 1/3 133. Pray tell, what is the origin of your current Champion? I've long admired the Bucker. It's more popular in Europe of course but it has it all. Round engine, double swept wings, the moments, the style and history of course. I bet it must fly like a dream. For me the best reasons not to build the Pepino are the 4 pictures you just posted. What power plant does it use? Thank you, John

John, I built two Jungies from Gary Allen's plans that were published by MAN. The first one was completely scratch built and the second one was built from a short kit from Arizona Model Aircrafters. I don't know what the situation will be with the wheel fenders and cowl because Stan's Fibertech has gone out of business. I lost the first one due to a mid air.

It's a very good flying plane. The aerobatic characteristics of the plane can make the pilot look better than he is. Of course, these are the type of aerobatics as flown by the full scale. The engine is a converted Sachs-Dolmar 4.2 cu-in with a CH Ignitions Syncrospark ignition. It will be back down at Bomber Field in the middle of September.

Here is the build thread: http://www.rcuniverse.com/forum/m_1395907/anchors_1395907/mpage_1/key_Bucker/anchor/tm.htm#1395907

Ken,

Thanks for the link to your Bucker build thread. I wish I could find this stuff when I do a search. I'll learn. I am real impressed to totally understate your contributions . I found my March 200o issue of MAN. I contacted Stans which is now:

http://www.aerofibertech.com/products.html

Prompt cordial reply states that molds went back to Arizona Aircrafters, I'm guessing when the Stan's changed hands. I will have to check with those chaps as to availability. Decisions, decisions. Appreciate your great publishing past and current. I better just finish what I have started. The big Allen Bucker or the Pepino Waco are real commitments of time not to approched without some serious thought. I will continue to watch your progress. You have some great methods that are new to me. Right when I thought I new everything.
Thanks, John

(in reply to Big_Bird)

Post #: 131

RE: Jim Pepino's YMF-5 Waco - 7/22/2007 4:20:12 PM

Big_Bird

Posts: 3183
Joined: 12/18/2001
From: Arlington, TX, USA
Status: offline

quote:

ORIGINAL: mango12

Ken, it looks like you are well on the way to building yourself a biplane!! I have trial fit the 5/32 wires in place , just to make sure I have them bent correctly, and used the alignment template provided on the plans. This was before I found out how you were setting up your wings ( incidence wise). I am going to try to get back on it this week. I have had my son all month so I haven't covered much ground in the building department, but of course the trade off has been worth it. I'll let you know when I make some progress.
Scott

Scott, did the alignment template fit your wing outline? Good deal on having your son for a month. My grandson is almost 4 and when he is around there is no working on airplanes. He sure is a lot of fun.

I'm still in a quandary as to what covering to use. The last two big birds that I built were covered with Solartex. It's a very good product but expensive. My other choices are Super Coverite, Sig Coverall, and dress lining polyester with nitrate dope. What are you going to use?

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Ken
WACO Brotherhood #70

(in reply to mango12)

Post #: 132

RE: Jim Pepino's YMF-5 Waco - 7/22/2007 4:26:51 PM

Big_Bird

Posts: 3183
Joined: 12/18/2001
From: Arlington, TX, USA
Status: offline

John, sounds like Arizona Model Aircrafters will be making the cowl and fenders. That makes perfect sense because their laser cut kit wouldn't be much good if you had to make your own parts. By the way, their laser cutting was accurate and top notch. It saved me a lot of time. They are good people to do business with.

Jump on in and build a Jungie. Gary Allen's Plans are far superior to Pepino's. If you get the plans buy them from Model Airplane News and not the redrawn ones from Arizona model Aircrafters.

< Message edited by Big_Bird -- 7/22/2007 4:29:35 PM >

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Ken
WACO Brotherhood #70

(in reply to JoeAverage)

Post #: 133

RE: Jim Pepino's YMF-5 Waco - 7/22/2007 4:33:22 PM

mango12

Posts: 217
Joined: 3/19/2007
From: duncanville, AL, USA
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Ken , if I can find super coverite, the old kind, that is what I'll use. I don't know if the newer stuff can be painted or not. And I really would like to use something other than dope if possible. I had a bear of a time when I painted my 1/3 Flybaby Bipe. The fumes, the respirator, the overspray, argh, what an ordeal.
Scott

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Scott
Waco Brotherhood #49

(in reply to Big_Bird)

Post #: 134

RE: Jim Pepino's YMF-5 Waco - 7/22/2007 4:50:32 PM

Big_Bird

Posts: 3183
Joined: 12/18/2001
From: Arlington, TX, USA
Status: offline

Scott, I'm sure it can be painted with clear Krylon or nitrate dope. Any kind of paint will stick to these.

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Ken
WACO Brotherhood #70

(in reply to mango12)

Post #: 135

RE: Jim Pepino's YMF-5 Waco - 7/22/2007 7:34:48 PM

mango12

Posts: 217
Joined: 3/19/2007
From: duncanville, AL, USA
Status: offline

In Model Aviation a few months back they had an article on the Toledo convention, at least thats what I think it was. There were several pictures of a Waco that was painted maroon and gold, and that is how I planned on painting mine. Are you suggesting using clear Krylon to fill the fabric or as a top coat after detail has been added? I had thought about using a urathane type or clearcoat/basecoat automotive paint so I can get the colors I want.
Scott

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Scott
Waco Brotherhood #49

(in reply to Big_Bird)

Post #: 136

RE: Jim Pepino's YMF-5 Waco - 7/23/2007 1:42:26 AM

Big_Bird