Today's Message Index:
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0. 09:49 AM - Fund Raiser Behind By 22% - Please Contribute Today! (Matt Dralle)
1. 05:17 AM - Flt reveiw/ GW/best glide ()
2. 05:31 AM - Re: Flt reveiw/ GW/best glide (Warren Brecheisen)
3. 06:10 AM - Fw: 6A gross wt (Jhnstniii)
4. 06:49 AM - Re: Flt reveiw/ GW/best glide (Carl Froehlich)
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Subject: | Fund Raiser Behind By 22% - Please Contribute Today! |
Dear Listers,
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Matt Dralle
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Subject: | Flt reveiw/ GW/best glide |
Thanks for all the usefull input to my inquiries. I did well on my FR, and
we experimented with glide speeds and found 90 to 100 mph pretty much looke
d the same, yielding 500/600 FPM. Visually it seemed we were covering a lot
of ground as well. Re GW, I will leave it alone based on y'alls input. N
ow I have to get into my radio problem. I started getting static on way bck
to Instructors field and when coming in to Fayettville Drake, it got so ba
d controler said it was nearly unreadable. Rec is ok tho. Chalie.
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Subject: | Flt reveiw/ GW/best glide |
I've been having an intermittent problem with transmitting. With mine it's
I either transmit or I don't, not static. When it isn't working, mine sort
of gives me a soft squeal and the transmit light stays off. So far I've
checked the PTT switch and it's ground-ok, w/ 1 ohm resistance. I've also
tried turning off the intercom, which will route the PTT output directly to
the nav/com and bypass the intermcom (to eliminate the intercom as the
problem). That isn't the problem either. I haven't determined what to do
next. Intermittent problems are hard to resolve, but it sounds like yours
is not intermittent but a real failure, which should be easier to track
down. I would be interested in how you resolve the issue.
Warren
From: owner-rv-list-server@matronics.com
[mailto:owner-rv-list-server@matronics.com] On Behalf Of cheathco@cox.net
Sent: Monday, November 23, 2015 7:16 AM
Subject: RV-List: Flt reveiw/ GW/best glide
Thanks for all the usefull input to my inquiries. I did well on my FR, and
we experimented with glide speeds and found 90 to 100 mph pretty much looked
the same, yielding 500/600 FPM. Visually it seemed we were covering a lot of
ground as well. Re GW, I will leave it alone based on y'alls input. Now I
have to get into my radio problem. I started getting static on way bck to
Instructors field and when coming in to Fayettville Drake, it got so bad
controler said it was nearly unreadable. Rec is ok tho. Chalie.
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-----Original Message-----
From: Jhnstniii <jhnstniii@aol.com>
Sent: Sun, Nov 22, 2015 3:48 pm
Subject: Re: RV-List: 6A gross wt
In my RV-6A at my all-up cross-country weight of 1800 lbs, and 2550 rpm (pr
op pulled back a bit due to rpm prop restriction), with a 180 hp 0-360-A1A
and Hartzell blended airfoil prop, I find that my best rate of climb is abo
ut 120 knots. I find that the short, broad cord wing has considerable indu
ced drag if I try to fly slower (higher AOA) when I am heavy. Plus any tim
e the temps are warm I need that kind of airspeed for engine cooling in a p
rolonged climb to cruise altitude. Depending on air temperature, this resu
lts in a rate of climb of anywhere from 600 fpm on a 90 degree day to about
1300 feet per minute on a 40 degree day. CHTs stay in the green, but when
I am IFR, obstacle clearance must be paid attention to. 600 fpm at 120 k
nots is only 300 feet per nautical mile.
LeRoy Johnston RV-6A Esperanza, 970 hours.
-----Original Message-----
From: Charlie England <ceengland7@gmail.com>
Sent: Sat, Nov 21, 2015 11:17 pm
Subject: Re: RV-List: 6A gross wt
Unless there has been a very recent change in the regs, the owner can
raise gross weight by treating it as a major modification. Depending on
which version of operating limitations are on the plane, it could be as
simple as logging a return to phase one, flying 5 hrs of tests at the
increased gross weight, and logging the successful results with a return
to phase two (normal operation). Newer versions require notifying the
local FSDO & getting their approval for the proposed test area (which
might well be the same as the original test area).
Not saying anyone should; just that it can be done. As mentioned, there
are lots of 6's & 6A's with higher than 1600 lb gross weights in their
oplims.
Tangentially related to the subject of best glide, Van once wrote an
article about best climb rate in the short wing RV's. He indicated that
due to increased induced drag of the low aspect ratio wing at low
airspeeds, the 4/6/7/8 would climb at almost identical rates at anywhere
between around 90 mph & 130 mph (rough numbers from my flaky memory).
His suggestion was for normal (not obstacle clearance) climb to be at
around 130 mph because the rate would be the same but a lot more ground
could be covered. I've never bothered to test it, but it seems
reasonable that a slightly higher speed might extend the *range* of a
glide, as well.
Charlie
On 11/21/2015 8:33 PM, Kelly McMullen wrote:
>
> As I understand it, you are pretty much stuck with what the original
> builder asked for. I don't know what a DAR would have to do to get you
> a changed gross wt.
>
> On 11/21/2015 4:45 PM, cheathco@cox.net wrote:
>> something I have wondered about but never asked. My plane builder
>> listed the GW at 1650, empty is 1080, but I had seen other ones at
>> 1750. I have been told the 6a has safely carried up to 1850, even tho
>> GW at 1750. I once unknowingly carried a psg who later told me he
>> weighed 235lb, didn=99t look it, but landed much harder that usual
. I
>> usually carry 200 lb psr max with full fuel and min baggage. Over
>> that I usually carry 3/4 to 1/2 fuel.
>> as a mater of fact I have not had anyone with me over 150 lb for past
>> 2 years.. I have weighed 185 for several years. And at 75 that is not
>> easy to do. Smile emoticon BTW, knowing that Art xxxx racing in
>> cherokee 140 used to carry his psgr in back seat, so when I did my
>> first race I had 80 lb of batteries in bagage which gave me extra
>> 5mph. Hope to get to bottom of this gross thing. Yhanks, Charlie
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n=sig-email&utm_content=emailclient>
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>>
>
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Subject: | Flt reveiw/ GW/best glide |
First things to check:
. Remove the radio from the rack, check rear connections (bent, off
color), reset radio.
. Make sure the power connections on the radio breaker(s) are tight
and you have a good ground (I chased this exact problem too long before I
found the power lead loose on the breaker screw).
. Put an antenna analyzer on the radio end of the coax lead to the
antenna. If nothing else, measure continuity on the antenna lead (no short
between center pin and shield, no/low resistance between center pin and
antenna itself). Wiggle the coax when doing this to see if you have an
intermittent contact problem.
Carl
From: owner-rv-list-server@matronics.com
[mailto:owner-rv-list-server@matronics.com] On Behalf Of Warren Brecheisen
Sent: Monday, November 23, 2015 8:30 AM
Subject: RE: RV-List: Flt reveiw/ GW/best glide
I've been having an intermittent problem with transmitting. With mine it's
I either transmit or I don't, not static. When it isn't working, mine sort
of gives me a soft squeal and the transmit light stays off. So far I've
checked the PTT switch and it's ground-ok, w/ 1 ohm resistance. I've also
tried turning off the intercom, which will route the PTT output directly to
the nav/com and bypass the intermcom (to eliminate the intercom as the
problem). That isn't the problem either. I haven't determined what to do
next. Intermittent problems are hard to resolve, but it sounds like yours
is not intermittent but a real failure, which should be easier to track
down. I would be interested in how you resolve the issue.
Warren
From: owner-rv-list-server@matronics.com
[mailto:owner-rv-list-server@matronics.com] On Behalf Of cheathco@cox.net
Sent: Monday, November 23, 2015 7:16 AM
Subject: RV-List: Flt reveiw/ GW/best glide
Thanks for all the usefull input to my inquiries. I did well on my FR, and
we experimented with glide speeds and found 90 to 100 mph pretty much looked
the same, yielding 500/600 FPM. Visually it seemed we were covering a lot of
ground as well. Re GW, I will leave it alone based on y'alls input. Now I
have to get into my radio problem. I started getting static on way bck to
Instructors field and when coming in to Fayettville Drake, it got so bad
controler said it was nearly unreadable. Rec is ok tho. Chalie.
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