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Craymondw(at)aol.com
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 Posted: Fri Jul 13, 2007 7:21 am Post subject: Glasair-List Digest: 0 Msgs - 07/12/07 |
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After I assembled my rudder I ran a wire through the hinge to get some idea how well it was balanced and found it not to be so good. One builder that lived down the street made a plaster cast of the cavity and poured molten lead to get more weight in the counter balance cavity. Using the plans method, I couldn't get in the required weight and I wasn't about to drill out the lead shot. I have over 1,000 hours and as I mentioned before, I have performed high speed passes well in excess of 260 mph and haven't experienced flutter.
At the time I had stopped constructing an RV 4 and decided to weight the tail feathers and found the total weight of the RV 4 tail feathers almost equaled the weight of my Glasair rudder!! I completed the very first 2S and discovered that although I installed a 200 hp IO360, constant speed prop and all weather instrument panel, my plane was not as nose heavy as I thought it would be. The next to complete the 2S had an aft CG problem and that led Stoddard Hamilton to advise moving the wing back and introducing the Super 2S series. I thought; "How bazaar, why didn't they just offer the tail feathers and control surfaces in carbon fiber!!"
Get a sneak peak of the all-new AOL.com.
[quote][b]
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s_korney(at)hotmail.com
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| Posted: Fri Jul 13, 2007 8:29 am Post subject: Glasair-List Digest: 0 Msgs - 07/12/07 |
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(snip) " I have performed high speed passes well in excess of 260 mph and
haven't experienced flutter"
Do ya think your RV-4 could have done 260 mph and not flutter...?
Best... Steve
----Original Message Follows----
From: Craymondw(at)aol.com
Reply-To: glasair-list(at)matronics.com
To: glasair-list(at)matronics.com
Subject: Re: Glasair-List Digest: 0 Msgs - 07/12/07
Date: Fri, 13 Jul 2007 11:18:44 EDT
After I assembled my rudder I ran a wire through the hinge to get some idea
how well it was balanced and found it not to be so good. One builder that
lived down the street made a plaster cast of the cavity and poured molten
lead to
get more weight in the counter balance cavity. Using the plans method, I
couldn't get in the required weight and I wasn't about to drill out the lead
shot. I have over 1,000 hours and as I mentioned before, I have performed
high
speed passes well in excess of 260 mph and haven't experienced flutter.
At the time I had stopped constructing an RV 4 and decided to weight
the
tail feathers and found the total weight of the RV 4 tail feathers almost
equaled the weight of my Glasair rudder!! I completed the very first 2S and
discovered that although I installed a 200 hp IO360, constant speed prop
and all
weather instrument panel, my plane was not as nose heavy as I thought it
would be. The next to complete the 2S had an aft CG problem and that led
Stoddard Hamilton to advise moving the wing back and introducing the Super
2S
series. I thought; "How bazaar, why didn't they just offer the tail
feathers and
control surfaces in carbon fiber!!"
************************************** Get a sneak peak of the all-new AOL
at
http://discover.aol.com/memed/aolcom30tour
_________________________________________________________________
http://newlivehotmail.com
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Craymondw(at)aol.com
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| Posted: Fri Jul 13, 2007 12:13 pm Post subject: Glasair-List Digest: 0 Msgs - 07/12/07 |
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I never completed the RV 4 I was building, so I can't tell you if the rudder would have fluttered at 260 MPH. I came close to that speed doing aerobatics in one that a friend owned, but I wouldn't recommend approaching that speed in one. Also, because of all the structural failures in RV's I never felt comfortable in one. Second to RV structural failures are Lancairs. I have never heard of a structural failure in any Glasair. Before building my Glasair I owned an S1S Pitts with a souped up IO 360. I had that plane well over 200 mph doing aerobatics and never experienced a flutter. Before owning both planes I flew a T-18 and performed 230 mph runs with it. That plane didn't have a counter weighted rudder.
I have flown my Glasair to 46 states, Canada and Mexico. The plane has a ride like a Cadillac. I have flown in bad thunder storms, snow, ice and freezing rain that was so bad, chunks of ice flew off the prop and cowling and smash into the wind screen. And I have hand flown solid IFR for hours on end. I have had the plane close to 18,000 feet altitude and I find the plane stable and as smooth as glass. And survivability in a crash is the best of all the composites. My beef with Stoddard Hamilton was not offering parts or even the whole kit in Carbon fiber. I always felt a carbon fiber version would shed hundreds of pounds in weight and would open up a whole new market. Especially if all the known speed modifications were introduced. Although my plane burns 10 gallons per hour, I average close to 210 mph giving me 21 miles per gallon.
Get a sneak peak of the all-new AOL.com.
[quote][b]
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s_korney(at)hotmail.com
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| Posted: Fri Jul 13, 2007 12:55 pm Post subject: Glasair-List Digest: 0 Msgs - 07/12/07 |
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"Although my plane burns 10 gallons per hour, I average close to 210 mph
giving me 21 miles per gallon. "
When you say that, is it at wide open throttle, 2700 rpm's and (at) sea level /
standard day....or 18000 ft. or what...? I need more information...
Best... Steve
----Original Message Follows----
From: Craymondw(at)aol.com
Reply-To: glasair-list(at)matronics.com
To: glasair-list(at)matronics.com
Subject: Re: Re: Glasair-List Digest: 0 Msgs - 07/12/07
Date: Fri, 13 Jul 2007 16:12:01 EDT
I never completed the RV 4 I was building, so I can't tell you if the
rudder
would have fluttered at 260 MPH. I came close to that speed doing
aerobatics
in one that a friend owned, but I wouldn't recommend approaching that speed
in one. Also, because of all the structural failures in RV's I never felt
comfortable in one. Second to RV structural failures are Lancairs. I have
never
heard of a structural failure in any Glasair. Before building my Glasair I
owned an S1S Pitts with a souped up IO 360. I had that plane well over 200
mph
doing aerobatics and never experienced a flutter. Before owning both planes
I flew a T-18 and performed 230 mph runs with it. That plane didn't have a
counter weighted rudder.
I have flown my Glasair to 46 states, Canada and Mexico. The plane has a
ride like a Cadillac. I have flown in bad thunder storms, snow, ice and
freezing rain that was so bad, chunks of ice flew off the prop and cowling
and
smash into the wind screen. And I have hand flown solid IFR for hours on
end. I
have had the plane close to 18,000 feet altitude and I find the plane
stable
and as smooth as glass. And survivability in a crash is the best of all the
composites. My beef with Stoddard Hamilton was not offering parts or even
the
whole kit in Carbon fiber. I always felt a carbon fiber version would shed
hundreds of pounds in weight and would open up a whole new market.
Especially
if all the known speed modifications were introduced. Although my plane
burns
10 gallons per hour, I average close to 210 mph giving me 21 miles per
gallon.
************************************** Get a sneak peak of the all-new AOL
at
http://discover.aol.com/memed/aolcom30tour
_________________________________________________________________
http://newlivehotmail.com
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robin02(at)mindspring.com
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| Posted: Sat Jul 14, 2007 4:59 am Post subject: Glasair-List Digest: 0 Msgs - 07/12/07 |
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"Although my plane burns 10 gallons per hour, I average close to 210 mph
giving me 21 miles per gallon. "
When you say that, is it at wide open throttle, 2700 rpm's and (at) sea level /
standard day....or 18000 ft. or what...? I need more information...
Steve, I get the same performance as mentioned in the previous post. I have
an original TD with 160Hp and a constant speed prop. At any altitude that I
can lean out 10GPH, I get 210MPH. At 7500' it means full throttle at about
2500RPM. Higher and the full throttle requires more RPM. Lower altitude
with full throttle and the RPM goes down to an over square power setting
2350/27MP or so....or 24 sq at 10gph still gets 210MPH TAS. I have flown
close formation with many different planes and the airspeed ind checks
against the other planes.
I hope this helps. Robin Young
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