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Old 09-14-2017, 02:05 AM   #26
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Dennis, I would like to know where you think the acro 2 is over built and or heavy. looking forward to this answer to see if you found some places to pull weight out of that I didn't.....


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Old 09-14-2017, 02:10 AM   #27
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Hey Cris, probably over built for a single place LSA.
Not over built for an aerobatic sport biplane.


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Old 09-14-2017, 01:33 PM   #28
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Quote:
Originally Posted by crankyklingon View Post
Hey Cris, probably over built for a single place LSA.
Not over built for an aerobatic sport biplane.
Maybe he can clarify....
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Old 09-14-2017, 02:37 PM   #29
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The thing is if you change it, you pretty much redesigned it into a Hatz. I would start with a Hatz and make it look like a AS2. Throw round tail and I struts on it. A regular Hatz is still a little heavy but closer. You could do the same with a Bantam Hatz if you like the AS2 look, too.
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Old 09-14-2017, 06:47 PM   #30
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Well I am no professional when it comes to designs. Just my limited
observation of seeing numerous biplane being built or rebuilt.
Take the Bucker biplanes for example. Light but strong. Yes had unlimited resources in designing them.
The Rose Parrotkeet and the Skyote (sorry for spelling, getting old)
And the Pitts Special, simplicity in it self until the HP race.
Sorry if I offended anyone, just an old man daydreaming out loud
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Old 09-14-2017, 06:50 PM   #31
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No offense at all, you mentioned you had the plans and saw areas that were overbuilt and could be made lighter. Just curious of those areas. I found a few, seeing if you found some more......
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Old 09-14-2017, 07:23 PM   #32
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mbaerobat said in his post is the best I say
Overall performance is below that of a lightly built S1 mainly due to some more robust construction items. Main spars are full depth, second set of rear flying/landing wire, (heavier wings); flaperon control, (more complex with mixer and associated steel); heavier fiberglass cowl/canopy; as well as any builder niceties/overbuild items that "had to be had". My empty weight with an angle valve IO-360/metal Sensenich metal prop is 928#. Performance is more than I will ever be able to utilize as I mainly do recreational/sportsman aerobatics.
smizo, your beautiful Biplane is the product of the evaluton of the biplane being built today. You did I did nothing. It is a vicious circle I see through an old man's eyes. Putting more HP in Biplanes then you have to add weight to strengthen the airframe which adds more weight and then add more and more into the cycle. I would rather see more attention being placed on airframe weight reduction than adding.
I was very lucky to grow up near St Augustine Airport and flew my first homebuilt there in 1978 (a Volksplane, don't laugh) But I saw many Aeroplanes there. The best one come to mind is Jim Moser's Bucker. He had a 200hp Lyc installed without any beef-up to the airframe that I remember. Saw her being rebuilt and what a beauty of building light.


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