EU-1 vs. EU-1A Differences Help
10-14-2010 | 04:28 PM
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From: Greenwood,
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EU-1 vs. EU-1A Differences Help
All right historical gurus - a few questions to help clarify things, please.
1. What are the differences between the EU-1 and the EU-1A?
2. Why does the EU-1 plan that I have show two wing roots: one is 15% and the other is 17%?
3. What are the above percentages referencing, ie. 17% of what?
4. What do you guys think of using an old Webra 90 in this plane?
Thanks for any and all comments - I am sooooo excited because Don has finished my fuse and will be sending it my way soon!!!!
The EU-1A was a dream of mine from the first time I saw its' picture on the cover of a magazine.
Gene
1. What are the differences between the EU-1 and the EU-1A?
2. Why does the EU-1 plan that I have show two wing roots: one is 15% and the other is 17%?
3. What are the above percentages referencing, ie. 17% of what?
4. What do you guys think of using an old Webra 90 in this plane?
Thanks for any and all comments - I am sooooo excited because Don has finished my fuse and will be sending it my way soon!!!!
The EU-1A was a dream of mine from the first time I saw its' picture on the cover of a magazine.
Gene
10-14-2010 | 07:48 PM
#2
RE: EU-1 vs. EU-1A Differences Help
Generally the % of root was the wing's root thickness to root chord measurement. Possibly there were two wing thicknesses envisioned by the designer.
Chris...
Chris...
10-14-2010 | 09:51 PM
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From: Rosamond, CA
RE: EU-1 vs. EU-1A Differences Help
There are lots of differences. The EU-1 was mostly foam and was larger then the EU-1A. I do seem to remember two different wing sections depending on how much power you think you could get out of a .60. I don't believe anything would interchange between an EU-1 and an EU-1A.
10-15-2010 | 08:02 AM
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From: Destin, Florida FL
RE: EU-1 vs. EU-1A Differences Help
I am very interested in building a EU1-A, It looks like a good flying plane, for someone like me that just wants to play at pattern, and have nice looking plane this might be the one. I see several people are making fuselage but do not post the wing span and area, does anyone know what it is. The other thing I like about the EU!-A is the up right engine, make a great weekend flyer, but I would like to use a modern engine. Like a OS120AX with a rap around header. Think that would work? Back in the 80’s we had a Eu1 or EU1-A fuse, a friend made the stabs angle down and we cut a big set of wings put a ST2500 in it and he painted it like the F-4, he flew. Real fun plane. T Green
10-15-2010 | 08:07 AM
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RE: EU-1 vs. EU-1A Differences Help
ORIGINAL: CRAPTECH
I am very interested in building a EU1-A, It looks like a good flying plane, for someone like me that just wants to play at pattern, and have nice looking plane this might be the one. I see several people are making fuselage but do not post the wing span and area, does anyone know what it is. The other thing I like about the EU!-A is the up right engine, make a great weekend flyer, but I would like to use a modern engine. Like a OS120AX with a rap around header. Think that would work? Back in the 80’s we had a Eu1 or EU1-A fuse, a friend made the stabs angle down and we cut a big set of wings put a ST2500 in it and he painted it like the F-4, he flew. Real fun plane. T Green
I am very interested in building a EU1-A, It looks like a good flying plane, for someone like me that just wants to play at pattern, and have nice looking plane this might be the one. I see several people are making fuselage but do not post the wing span and area, does anyone know what it is. The other thing I like about the EU!-A is the up right engine, make a great weekend flyer, but I would like to use a modern engine. Like a OS120AX with a rap around header. Think that would work? Back in the 80’s we had a Eu1 or EU1-A fuse, a friend made the stabs angle down and we cut a big set of wings put a ST2500 in it and he painted it like the F-4, he flew. Real fun plane. T Green
Don't hold your breath wainting on the East Coast guy......
Dave
10-15-2010 | 08:48 AM
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From: Greenwood,
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RE: EU-1 vs. EU-1A Differences Help
Tony,
Thanks for your input. I didn't realize that the differences would be that vast - when I receive my fuse for the EU-1A I'll compare it to the plans and post my thoughts for people to evaluate.
Gene
Thanks for your input. I didn't realize that the differences would be that vast - when I receive my fuse for the EU-1A I'll compare it to the plans and post my thoughts for people to evaluate.
Gene
10-15-2010 | 08:48 AM
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From: Belfast, IRELAND
RE: EU-1 vs. EU-1A Differences Help
2. Why does the EU-1 plan that I have show two wing roots: one is 15% and the other is 17%?
This from the original EU1 article by designer Wayne Ulery. Not quite sure how he quantifies "improvement" and "slight edge".
Ray
10-15-2010 | 06:28 PM
#10
RE: EU-1 vs. EU-1A Differences Help
ORIGINAL: TonyF
There are lots of differences. The EU-1 was mostly foam and was larger then the EU-1A. I do seem to remember two different wing sections depending on how much power you think you could get out of a .60. I don't believe anything would interchange between an EU-1 and an EU-1A.
There are lots of differences. The EU-1 was mostly foam and was larger then the EU-1A. I do seem to remember two different wing sections depending on how much power you think you could get out of a .60. I don't believe anything would interchange between an EU-1 and an EU-1A.
10-15-2010 | 08:17 PM
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From: Rosamond, CA
RE: EU-1 vs. EU-1A Differences Help
When the original big EU-1 came out, it was really asking a lot from the current .61 powerplants. So the thinner wing was considered to reduce the drag and perhaps the weight a bit. I think that was what Wayne was saying in his article. I don't know what the wing thickness percentage is on the EU-1A, although I did have one. Used it as my back-up to a Tiporare at the 1980 Nats.
10-16-2010 | 04:54 AM
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From: Belfast, IRELAND
RE: EU-1 vs. EU-1A Differences Help
Gene,
A shot showing both versions. The Project Pattern articles mentioned were written by Bob Hunt(R) and Dean Pappas(L) and described the building and trimming of this EU-1A from the Dave Scully Aero Composites kit. A most interesting series, it ran from May 1984 until September 1986 in Flying Models magazine.
Ray
A shot showing both versions. The Project Pattern articles mentioned were written by Bob Hunt(R) and Dean Pappas(L) and described the building and trimming of this EU-1A from the Dave Scully Aero Composites kit. A most interesting series, it ran from May 1984 until September 1986 in Flying Models magazine.
Ray
10-16-2010 | 08:23 AM
#13
RE: EU-1 vs. EU-1A Differences Help
If you closely at the Bobby Hunt model it's got about a million rivets and panel lines on that flawless finish. Cool looking jet style model. I hope that this becomes a popular build soon.
Chris...
Chris...
10-16-2010 | 09:04 AM
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From: Greenwood,
IN
RE: EU-1 vs. EU-1A Differences Help
RFJ,
From looking at the pictures you provided, the turtledeck and the canopy area are quite different from the 1 to the 1A. The nose area on the 1A looks to be a bit sleeker, not as wide or tall. The engine head on the EU-1 picture looks lost inside the cowl area while on the 1A more of the cylinder and head are showing.
Thanks for your pictures.
Gene
From looking at the pictures you provided, the turtledeck and the canopy area are quite different from the 1 to the 1A. The nose area on the 1A looks to be a bit sleeker, not as wide or tall. The engine head on the EU-1 picture looks lost inside the cowl area while on the 1A more of the cylinder and head are showing.
Thanks for your pictures.
Gene
10-16-2010 | 09:52 AM
#15
RE: EU-1 vs. EU-1A Differences Help
ORIGINAL: stuntflyr
If you closely at the Bobby Hunt model it's got about a million rivets and panel lines on that flawless finish. Cool looking jet style model. I hope that this becomes a popular build soon.
Chris...
If you closely at the Bobby Hunt model it's got about a million rivets and panel lines on that flawless finish. Cool looking jet style model. I hope that this becomes a popular build soon.
Chris...
10-16-2010 | 10:27 AM
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From: Belfast, IRELAND
RE: EU-1 vs. EU-1A Differences Help
If you closely at the Bobby Hunt model it's got about a million rivets and panel lines
The panel lines, access hatches, inspection plates, rivet dots and screw heads were added using a #2 Rapidograph pen just before the final clear coat.
Ray
]
10-17-2010 | 07:08 AM
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From: Belfast, IRELAND
RE: EU-1 vs. EU-1A Differences Help
Bo,
It seems to be a strange phenomenon associated with getting older - I can recall stuff from years ago but can't remember what I did yesterday [&o]
Ray
It seems to be a strange phenomenon associated with getting older - I can recall stuff from years ago but can't remember what I did yesterday [&o]
Ray
10-22-2010 | 02:25 PM
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From: Greenwood,
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RE: EU-1 vs. EU-1A Differences Help
Ed,
Thanks for the great pic!! I love the clean crisp lines of his paint scheme. A direct contrast to the rounded lines of today's modern pattern planes. This view of his plane also shows the canopy and turtle deck lines that I have found to be quite different from the EU-1 plans that I have. I like the sleeker lines of the EU-1A. Hope to have mine soon to work on this winter.
Gene
Thanks for the great pic!! I love the clean crisp lines of his paint scheme. A direct contrast to the rounded lines of today's modern pattern planes. This view of his plane also shows the canopy and turtle deck lines that I have found to be quite different from the EU-1 plans that I have. I like the sleeker lines of the EU-1A. Hope to have mine soon to work on this winter.
Gene
