Bridi Great Escape.... Which Engine????
02-02-2010, 12:57 AM
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Bridi Great Escape.... Which Engine????
I have dug out my Bridi Great Escape pattern kit and will build it over the next several months. As it was designed for anything from a rear exhaust .61 to a 1.20 four stroke, I have an interesting choice to make: Jett Barstock .90LX, or an OS Max 1.20 Surpass with a pump. The .90 is of course, a monster of an engine, but does not have the torque curve of the 1.20. Which one would you use???
Mike
Mike
02-02-2010, 08:13 AM
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RE: Bridi Great Escape.... Which Engine????
ORIGINAL: smith629
Those Jett engines are some bad to the bone engines. You would never be sorry you chose one.
Those Jett engines are some bad to the bone engines. You would never be sorry you chose one.
Yes, it is. I own both engines, and the nose would have to be considerably different depending on which engine I choose. I am leaning toward the Jett.
02-02-2010, 01:16 PM
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RE: Bridi Great Escape.... Which Engine????
But we are the classic pattern forum
02-02-2010, 01:19 PM
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RE: Bridi Great Escape.... Which Engine????
Alas..., I am guilty of that (but not on all classics - some are not permissible)
Actually the knife-edge between vintage/classic and modern/high-tech is where I find it's coolest to ride - keeps your brain working.
David.
Actually the knife-edge between vintage/classic and modern/high-tech is where I find it's coolest to ride - keeps your brain working.
David.
02-02-2010, 01:57 PM
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RE: Bridi Great Escape.... Which Engine????
ORIGINAL: doxilia
No question - Jett. A Surpass ought to be in an enclosed cowl...
But we are the classic pattern forum
David.
No question - Jett. A Surpass ought to be in an enclosed cowl...
But we are the classic pattern forum
David.
02-02-2010, 02:24 PM
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RE: Bridi Great Escape.... Which Engine????
Good idea.
Fuse sides strike me as always being 1/16" (at least) too thick than necessary on the older designs. Problem is, that you end up with a skinnier overall fuse unless you adjust by using wider formers. A 1/8" outer narrower fuse on a 60 size ship is not something that I would break a sweat over though.
All you probably need is 1/8" fuse sides (especially if there is a ply doubler) or 3/16" but they are probably 1/4" or 5/16". If necessary you can add an additional 1/8" lite-ply former (or CF strip) for stiffness. If you do re-cut, this also allows you to adjust the height eliminating some of the often unneeded wood in the blocks (top and bottom).
David.
Fuse sides strike me as always being 1/16" (at least) too thick than necessary on the older designs. Problem is, that you end up with a skinnier overall fuse unless you adjust by using wider formers. A 1/8" outer narrower fuse on a 60 size ship is not something that I would break a sweat over though.
All you probably need is 1/8" fuse sides (especially if there is a ply doubler) or 3/16" but they are probably 1/4" or 5/16". If necessary you can add an additional 1/8" lite-ply former (or CF strip) for stiffness. If you do re-cut, this also allows you to adjust the height eliminating some of the often unneeded wood in the blocks (top and bottom).
David.
02-02-2010, 02:29 PM
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RE: Bridi Great Escape.... Which Engine????
ORIGINAL: doxilia
Good idea.
Fuse sides strike me as always being 1/16'' (at least) too thick than necessary on the older designs. Problem is, that you end up with a skinnier overall fuse unless you adjust by using wider formers. A 1/8'' outer narrower fuse on a 60 size ship is not something that I would break a sweat over though.
All you probably need is 1/8'' fuse sides (especially if there is a ply doubler) or 3/16'' but they are probably 1/4'' or 5/16''. If necessary you can add an additional 1/8'' lite-ply former (or CF strip) for stiffness. If you do re-cut, this also allows you to adjust the height eliminating some of the often unneeded wood in the blocks (top and bottom).
David.
Good idea.
Fuse sides strike me as always being 1/16'' (at least) too thick than necessary on the older designs. Problem is, that you end up with a skinnier overall fuse unless you adjust by using wider formers. A 1/8'' outer narrower fuse on a 60 size ship is not something that I would break a sweat over though.
All you probably need is 1/8'' fuse sides (especially if there is a ply doubler) or 3/16'' but they are probably 1/4'' or 5/16''. If necessary you can add an additional 1/8'' lite-ply former (or CF strip) for stiffness. If you do re-cut, this also allows you to adjust the height eliminating some of the often unneeded wood in the blocks (top and bottom).
David.
02-02-2010, 04:48 PM
#12
RE: Bridi Great Escape.... Which Engine????
ORIGINAL: Sport_Pilot
Some people want to power them up with electric motors. I know, it doesn't make sense to me either, but let others have their fun as they see fit. After all the classic car collectors, and the hot rodders get along, working on the same age vehicles as they see fit.
Some people want to power them up with electric motors. I know, it doesn't make sense to me either, but let others have their fun as they see fit. After all the classic car collectors, and the hot rodders get along, working on the same age vehicles as they see fit.
It's funny, but I see the same thing going on here. There are guys who are happy to let an original kit dry rot and would put down somebody who wanted to build it, while others would welcome modifications to a design to improve some aspect.
What's really funny is the one group which insists on doing things "the old way" but disallows some original equipment like retracts and allows others like modern 4-strokes but not certain old ones, and allows all sorts of airframe changes so long as they paint an old name on the nose. To me it's like somebody building a '28 Coupe with a Hemi engine and insisting on using the original spoked rims.
Personally I think a middle ground would be good. I like the old designs - the jet-like performance ones more than the early 1960's stuff - but I can see how they can be improved construction-wise, or re-engined to decrease noise and weight. Changing a design a smidgen is fine, but don't call it the same thing if you're changing the wing or tail or dihedral or side area in a major way.
Andy
02-06-2010, 08:50 PM
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RE: Bridi Great Escape.... Which Engine????
ORIGINAL: dhal22
got a photo of that Jett .90 barstock? FIRE i assume. did you order a pipe to go with it?
got a photo of that Jett .90 barstock? FIRE i assume. did you order a pipe to go with it?
02-07-2010, 05:38 AM
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RE: Bridi Great Escape.... Which Engine????
It's funny, but I see the same thing going on here. There are guys who are happy to let an original kit dry rot and would put down somebody who wanted to build it, while others would welcome modifications to a design to improve some aspect.
What's really funny is the one group which insists on doing things "the old way" but disallows some original equipment like retracts and allows others like modern 4-strokes but not certain old ones, and allows all sorts of airframe changes so long as they paint an old name on the nose. To me it's like somebody building a '28 Coupe with a Hemi engine and insisting on using the original spoked rims.
Personally I think a middle ground would be good. I like the old designs - the jet-like performance ones more than the early 1960's stuff - but I can see how they can be improved construction-wise, or re-engined to decrease noise and weight. Changing a design a smidgen is fine, but don't call it the same thing if you're changing the wing or tail or dihedral or side area in a major way.
Andy
What's really funny is the one group which insists on doing things "the old way" but disallows some original equipment like retracts and allows others like modern 4-strokes but not certain old ones, and allows all sorts of airframe changes so long as they paint an old name on the nose. To me it's like somebody building a '28 Coupe with a Hemi engine and insisting on using the original spoked rims.
Personally I think a middle ground would be good. I like the old designs - the jet-like performance ones more than the early 1960's stuff - but I can see how they can be improved construction-wise, or re-engined to decrease noise and weight. Changing a design a smidgen is fine, but don't call it the same thing if you're changing the wing or tail or dihedral or side area in a major way.
Andy
FB
07-28-2012, 07:57 PM
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RE: Bridi Great Escape.... Which Engine????
Over two years after I started this thread, I finally have time to work on the Great Escape. I see in the plans and in the written instructions there is no suggestion for side or down thrust in the engine.... Suggestions on this?
Thanks,
Mike
Thanks,
Mike
01-20-2020, 09:11 AM
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I hear more about the XLT and Escape but not much about the Great Escape.
Looking at the plans there doesn't like much room for servos and fuel tank. Also with the wing being higher up in the fuse looks like it makes the landing gear struts much longer.
Appreciate anyone posting there pictures and experience with one.
Thank you
Looking at the plans there doesn't like much room for servos and fuel tank. Also with the wing being higher up in the fuse looks like it makes the landing gear struts much longer.
Appreciate anyone posting there pictures and experience with one.
Thank you
01-20-2020, 05:36 PM
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The Great Escape resulted from changes implemented to the Escape design by Bill Cunningham. He flew it very successfully, then evolved it into the 60 sized Malibu which used the wing and stab from the Great Escape and a fuselage design which looked very much like a Dash-5. The final version was a bit bigger for 120 4-strokes. Here's a photo which I'm sure you've seen before: https://www.rcgroups.com/forums/show...8&postcount=20 (bottom of the page)
