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Old Feb 10, 2013, 11:13 AM
Perfect 3pt inverted landing!
teookie's Avatar
USA, AL, Huntsville
Joined Oct 2008
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Quote:
Originally Posted by franke21m View Post
Ben told me a couple years ago at a Huckfest that after 300 or so flights to go over the joints with CA and you can get any plane to last a long time. 600+ flights on a good quality arf.
Sounds logical to me. A good design should be putting all the load into the wood and not the glue joints anyway.
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Old Feb 10, 2013, 02:18 PM
Team 3DHS
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USA, OH, Macedonia
Joined Jul 2009
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Originally Posted by 3Daddict View Post
that is interesting, It must really be an advantage for giant scale planes then. As I have not had and of my small planes where out. Why do the larger wood planes where out, is it because of the vibration of the engine?
From what I've heard...I am not in this class of piloting, I'm just explaining the general reason why some prefer composite IMAC/Pattern planes.

There is a difference between simply an airframe lasting...and the airframe performing as "tightly" as it should.

Most professionals put 1000+ flights on an airframe in a season...and they count on the airframe performing the same on flight 1000 as it did on flight 50. (especially pattern guys)

This is not a concern to the recreational pilot who is just out to fly...it's more of a concern to the pilot who takes his flying to the highest level and counts on a more consistent performance over the years of his/her airframe. (read: professional competitors)

This is the general reasoning you'll hear from pilots that prefer composite airframes for particular reasons.
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Old Feb 10, 2013, 02:41 PM
I fly, therefore, I crash!!!
SteveT.'s Avatar
San Jose, CA
Joined Jan 2008
27,113 Posts
Quote:
Originally Posted by 3Daddict View Post
that is interesting, It must really be an advantage for giant scale planes then. As I have not had and of my small planes where out. Why do the larger wood planes where out, is it because of the vibration of the engine?
Yes, and improperly balanced props....and if doing 3D....then also just general stress on the airframe will wear them out....

SteveT.
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Old Feb 10, 2013, 02:46 PM
I fly, therefore, I crash!!!
SteveT.'s Avatar
San Jose, CA
Joined Jan 2008
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Funny thing that I heard yesterday... One of the guys at our field who is a very good flier was flying a CARF Extra (260 or 360, not sure which), and every time he would do any kind of higher speed maneuver that involved large aileron movement, we would hear a howl.... It seems that the wing at the ends of the ailerons (not the ailerons themselves), were open, and when the ailerons moved a large amount, it acted just like blowing over the mouth of a glass bottle...

SteveT.
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Last edited by SteveT.; Feb 10, 2013 at 06:49 PM.
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Old Feb 10, 2013, 03:39 PM
Registered User
United States, MI, Allegan
Joined Aug 2012
714 Posts
Quote:
Originally Posted by djmoose View Post
From what I've heard...I am not in this class of piloting, I'm just explaining the general reason why some prefer composite IMAC/Pattern planes.

There is a difference between simply an airframe lasting...and the airframe performing as "tightly" as it should.

Most professionals put 1000+ flights on an airframe in a season...and they count on the airframe performing the same on flight 1000 as it did on flight 50. (especially pattern guys)

This is not a concern to the recreational pilot who is just out to fly...it's more of a concern to the pilot who takes his flying to the highest level and counts on a more consistent performance over the years of his/her airframe. (read: professional competitors)

This is the general reasoning you'll hear from pilots that prefer composite airframes for particular reasons.
Are there any composite 3d planes? I've never seen one.
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Old Feb 10, 2013, 04:03 PM
Addicted to 3DHS and EF
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ohio
Joined Oct 2010
4,642 Posts
Quote:
Originally Posted by djmoose View Post
From what I've heard...I am not in this class of piloting, I'm just explaining the general reason why some prefer composite IMAC/Pattern planes.

There is a difference between simply an airframe lasting...and the airframe performing as "tightly" as it should.

Most professionals put 1000+ flights on an airframe in a season...and they count on the airframe performing the same on flight 1000 as it did on flight 50. (especially pattern guys)

This is not a concern to the recreational pilot who is just out to fly...it's more of a concern to the pilot who takes his flying to the highest level and counts on a more consistent performance over the years of his/her airframe. (read: professional competitors)

This is the general reasoning you'll hear from pilots that prefer composite air-frames for particular reasons.
OK, I think i get it. Wood being a natural material expands and contracts. Which could change how the plane flies slightly over time. Where as composite materials do not change and stay consistent.
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Old Feb 10, 2013, 04:04 PM
Addicted to 3DHS and EF
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ohio
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Originally Posted by TimmyC View Post
Are there any composite 3d planes? I've never seen one.
yes, COMP ARF, Krill, and even the new Hanger 9 100cc QQ yak.
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Old Feb 10, 2013, 04:16 PM
Irg
ol' yellow eyes is back
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Brooklyn, NY
Joined Apr 2009
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Quote:
Originally Posted by SteveT. View Post
Funny thing that I heard yesterday... One of the guys at our field who is a very good flier was flying a CARF Extra (260 or 360, not sure which), and every time he would do any kind of higher speed maneuver that involved large elevator movement, we would hear a howl.... It seems that the wing at the ends of the ailerons (not the ailerons themselves), were open, and when the ailerons moved a large amount, it acted just like blowing over the mouth of a glass bottle...

SteveT.
funny... the 89 that I had, which wasn't set up by me, made a crazy honking sort of sound when rolling at high speeds. I'm curious to see if it still does it when the present owner gets it in the air. of course it might not be audible over the roar of the dle 70 he put in it.
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Old Feb 10, 2013, 05:58 PM
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USA, NJ, West Paterson
Joined Feb 2008
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Quote:
Originally Posted by Irg View Post
funny... the 89 that I had, which wasn't set up by me, made a crazy honking sort of sound when rolling at high speeds. I'm curious to see if it still does it when the present owner gets it in the air. of course it might not be audible over the roar of the dle 70 he put in it.
lol cant wait to get it in the air dle 70 would be sweet but its a 60cc
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Old Feb 10, 2013, 06:04 PM
3DHobbyShop.com
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S. Lancaster County, PA
Joined Jun 2006
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Ah yes, the yellow 89... she made that noise when she was happy.
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Old Feb 10, 2013, 06:08 PM
Team 3DHS / Team JR
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United States, TN, Knoxville
Joined Apr 2010
4,466 Posts
Quote:
Originally Posted by SteveT. View Post
Funny thing that I heard yesterday... One of the guys at our field who is a very good flier was flying a CARF Extra (260 or 360, not sure which), and every time he would do any kind of higher speed maneuver that involved large elevator movement, we would hear a howl.... It seems that the wing at the ends of the ailerons (not the ailerons themselves), were open, and when the ailerons moved a large amount, it acted just like blowing over the mouth of a glass bottle...

SteveT.
Comp-arf's aileron's "chirp" at high speeds.......loud enough to be annoying....

Quote:
Originally Posted by jamesrini View Post
lol cant wait to get it in the air dle 70 would be sweet but its a 60cc
Cool... but 70 would be fun to watch on an 89 for sure..
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Old Feb 10, 2013, 06:38 PM
You down with EPP?
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Houston, Tx
Joined May 2009
6,818 Posts
Is there going to be a 14% off 3DHS sale this week?
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Old Feb 10, 2013, 06:50 PM
I fly, therefore, I crash!!!
SteveT.'s Avatar
San Jose, CA
Joined Jan 2008
27,113 Posts
Quote:
Originally Posted by Irg View Post
funny... the 89 that I had, which wasn't set up by me, made a crazy honking sort of sound when rolling at high speeds. I'm curious to see if it still does it when the present owner gets it in the air. of course it might not be audible over the roar of the dle 70 he put in it.
I actually meant to say ailerons, but had another "senior moment" and said elevator....oh well... C'est la vie.....

SteveT.
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Old Feb 10, 2013, 06:52 PM
I fly, therefore, I crash!!!
SteveT.'s Avatar
San Jose, CA
Joined Jan 2008
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Quote:
Originally Posted by johnnyrocco123 View Post
Is there going to be a 14% off 3DHS sale this week?
I take it you mean a 14% off sale on Feb. 14th?? That would be a "sweetheart" of a deal....

SteveT.
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Old Feb 10, 2013, 06:57 PM
I fly, therefore, I crash!!!
SteveT.'s Avatar
San Jose, CA
Joined Jan 2008
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Quote:
Originally Posted by TimmyC View Post
Are there any composite 3d planes? I've never seen one.
Quote:
Originally Posted by 3Daddict View Post
yes, COMP ARF, Krill, and even the new Hanger 9 100cc QQ yak.
It seems like most composite aircraft have scale type hinging, which I have been told by many people that would know (I have never flown a large composite aircraft), that scale hinging doesn't 3D well....

SteveT.
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