Today's Message Index:
----------------------
1. 12:25 AM - List of Contributors 2008 (Matt Dralle)
2. 07:15 AM - Re: IO-360 -b Series Power Chart - FOUND (Tim Bryan)
3. 07:28 AM - Re: IO-360 -b Series Power Chart - FOUND (Kelly McMullen)
4. 07:47 AM - Re: RV-List Digest: 7 Msgs - 12/07/08 (Frazier, Vincent A)
5. 08:03 AM - Re: IO-360 -b Series Power Chart - FOUND (Larry Pardue)
6. 08:04 AM - Re: IO-360 -b Series Power Chart - FOUND (Jack Hilditch)
7. 08:23 AM - Re: IO-360 -b Series Power Chart - FOUND (John Jessen)
8. 10:43 AM - Re: IO-360 -b Series Power Chart - FOUND (Tim Bryan)
9. 08:52 PM - Re: Pitot testing (Kyrilian Dyer)
Message 1
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| Subject: | List of Contributors 2008 |
Dear Listers,
This year's Fund Raiser has drawn to a close and I want to thank everyone that
so generously made a contribution this year in support of the Matronics Email
List and Forum operation. Your generosity keeps the wheels on this cart and I
truly appreciate the many kind words of encouragement and financial reimbursement.
If you haven't yet made a Contribution in support of this year's Fund Raiser, please
feel free to do so. The great List Fund Raiser gifts will be available
on the Contribution site for a little while longer, so hurry and make your Contribution
today and still get your great gift! Once again, the URL for the Contribution
web site is:
http://www.matronics.com/contribution
or by personal check to:
Matronics / Matt Dralle
PO Box 347
Livermore CA 94551-0347
I would like to thank Andy Gold of the Builder's Bookstore ( http://www.buildersbooks.com ), Jon Croke of HomebuiltHELP ( http://www.homebuilthelp.com ) and Bob Nuckolls of AeroElectric ( http://www.aeroelectric.com ) for their extremely generous support during this year's Fund Raiser through the contribution of discounted merchandise. These are great guys that support the aviation industry and I encourage each and every Lister to have a look at their products. Thank you Andy, Jon and Bob!! Your support is very much appreciated!
And finally, below you will find a web link to the 2008 List of Contributors current
as of 12/7/08! Have a look at this list of names as *these* are the people
that make all of these List services possible! I can't thank each of you
enough for your support and great feedback during this year's Fund Raiser!
THANK YOU!
http://www.matronics.com/loc/2008.html
I will be shipping out all of the gifts around the end of December. In most cases,
gifts will be shipped via US Postal Service.
Once again, thank you for making this year's List Fund Raiser successful!
Best regards,
Matt Dralle
Matronics Email List Administrator
Message 2
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| Subject: | IO-360 -b Series Power Chart - FOUND |
And so if they are still lurking, I would love to have this chart for
the
O-360-A1A.
Tim Bryan
RV-6 Flying
N616TB over 120 hours now
From: owner-rv-list-server@matronics.com
[mailto:owner-rv-list-server@matronics.com] On Behalf Of J Riffel
Sent: Saturday, December 06, 2008 8:34 AM
Subject: RV-List: IO-360 -b Series Power Chart - FOUND
A kind sole at Lycoming saw the RV post and sent this - which is
EXACTLY
what I was looking for. So I thought I'd share:
Fuel and Power Chart - Lycoming Model IO-360-B1B, -B1D, -B1E, -E1A, -
B1A
Press. Alt. 1000 Ft
Std. Alt. Temp. F=BA
99 Hp - 55% Rated Fuel Flow 45 Lb/Hr RPM & MAP
117 HP - 65% Rated Fuel Flow 50 Lb/Hr RPM & MAP
135 HP-75%Rated Fuel Flow 60 Lb/Hr RPM & MAP
2100
2200
2300
2400
2100
2200
2300
2400
2200
2300
2400
SL
59
21.2
20.7
20.2
19.7
24.0
23.4
22.8
22.2
26.0
25.4
24.7
1
55
21.0
20.5
20.0
19.5
23.8
23.2
22.5
22.0
25.8
25.1
24.5
2
52
20.7
20.3
19.7
19.3
23.5
22.9
22.3
21.8
25.5
24.8
24.2
3
48
20.5
20.0
19.5
19.1
23.2
22.7
22.0
21.5
25.3
24.6
24.0
4
45
20.3
19.8
19.3
18.9
23.0
22.5
21.8
21.3
25.1
24.3
23.8
5
41
20.0
19.6
19.1
18.6
22.7
22.2
21.6
21.1
FT
24.1
23.5
6
38
19.8
19.4
18.9
18.4
22.5
22.0
21.3
20.9
FT
23.3
7
34
19.6
19.2
18.7
18.2
22.0
21.8
21.1
20.7
FT
8
31
19.3
18.9
18.4
18.0
FT
21.5
20.9
20.5
9
27
19.1
18.6
18.3
17.8
17.4
FT
10
23
18.9
18.4
18.1
17.6
17.2
11
19
18.6
FT
17.8
17.4
17.0
12
16
18.4
FT
17.1
16.8
13
12
FT
To Maintain constant power, correct manifold pressure approximately
0.17"hg.
For each 10F variation in carburetor air temperature from standard
altitude
temperature. Add manifold pressure for air temperatures above standard;
subtract for temperatures below standard
Message 3
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| Subject: | Re: IO-360 -b Series Power Chart - FOUND |
Should be almost identical, since both engines have the same cylinders
and power ratings.
Tim Bryan wrote:
>
> And so if they are still lurking, I would love to have this chart for
> the O-360-A1A.
>
>
>
> *Tim Bryan*
>
> *RV-6 Flying*
>
> *N616TB over 120 hours now*
>
>
>
> *From:* owner-rv-list-server@matronics.com
> [mailto:owner-rv-list-server@matronics.com] *On Behalf Of *J Riffel
> *Sent:* Saturday, December 06, 2008 8:34 AM
> *To:* rv-list
> *Subject:* RV-List: IO-360 -b Series Power Chart - FOUND
>
>
>
> A kind sole at Lycoming saw the RV post and sent this - which is
> EXACTLY what I was looking for. So I thought I'd share:
>
>
>
> Fuel and Power Chart - Lycoming Model IO-360-B1B, -B1D, -B1E, -E1A, - B1A
>
> Press. Alt. 1000 Ft
>
>
>
> Std. Alt. Temp. F
>
>
>
> 99 Hp - *55%* Rated Fuel Flow *45 Lb/H*r RPM & MAP
>
>
>
> 117 HP - *65%* Rated Fuel Flow *50 Lb/Hr *RPM & MAP
>
>
>
> 135 HP-*75%*Rated Fuel Flow *60 Lb/Hr *RPM & MAP
>
>
>
>
>
> *2100*
>
>
>
> *2200*
>
>
>
> *2300*
>
>
>
> *2400*
>
>
>
> *2100*
>
>
>
> *2200*
>
>
>
> *2300*
>
>
>
> *2400*
>
>
>
> *2200*
>
>
>
> *2300*
>
>
>
> *2400*
>
> SL
>
>
>
> 59
>
>
>
> 21.2
>
>
>
> 20.7
>
>
>
> 20.2
>
>
>
> 19.7
>
>
>
> 24.0
>
>
>
> 23.4
>
>
>
> 22.8
>
>
>
> 22.2
>
>
>
> 26.0
>
>
>
> 25.4
>
>
>
> 24.7
>
> 1
>
>
>
> 55
>
>
>
> 21.0
>
>
>
> 20.5
>
>
>
> 20.0
>
>
>
> 19.5
>
>
>
> 23.8
>
>
>
> 23.2
>
>
>
> 22.5
>
>
>
> 22.0
>
>
>
> 25.8
>
>
>
> 25.1
>
>
>
> 24.5
>
> 2
>
>
>
> 52
>
>
>
> 20.7
>
>
>
> 20.3
>
>
>
> 19.7
>
>
>
> 19.3
>
>
>
> 23.5
>
>
>
> 22.9
>
>
>
> 22.3
>
>
>
> 21.8
>
>
>
> 25.5
>
>
>
> 24.8
>
>
>
> 24.2
>
> 3
>
>
>
> 48
>
>
>
> 20.5
>
>
>
> 20.0
>
>
>
> 19.5
>
>
>
> 19.1
>
>
>
> 23.2
>
>
>
> 22.7
>
>
>
> 22.0
>
>
>
> 21.5
>
>
>
> 25.3
>
>
>
> 24.6
>
>
>
> 24.0
>
> 4
>
>
>
> 45
>
>
>
> 20.3
>
>
>
> 19.8
>
>
>
> 19.3
>
>
>
> 18.9
>
>
>
> 23.0
>
>
>
> 22.5
>
>
>
> 21.8
>
>
>
> 21.3
>
>
>
> 25.1
>
>
>
> 24.3
>
>
>
> 23.8
>
> 5
>
>
>
> 41
>
>
>
> 20.0
>
>
>
> 19.6
>
>
>
> 19.1
>
>
>
> 18.6
>
>
>
> 22.7
>
>
>
> 22.2
>
>
>
> 21.6
>
>
>
> 21.1
>
>
>
> FT
>
>
>
> 24.1
>
>
>
> 23.5
>
> 6
>
>
>
> 38
>
>
>
> 19.8
>
>
>
> 19.4
>
>
>
> 18.9
>
>
>
> 18.4
>
>
>
> 22.5
>
>
>
> 22.0
>
>
>
> 21.3
>
>
>
> 20.9
>
>
>
>
> FT
>
>
>
> 23.3
>
> 7
>
>
>
> 34
>
>
>
> 19.6
>
>
>
> 19.2
>
>
>
> 18.7
>
>
>
> 18.2
>
>
>
> 22.0
>
>
>
> 21.8
>
>
>
> 21.1
>
>
>
> 20.7
>
>
>
>
>
> FT
>
> 8
>
>
>
> 31
>
>
>
> 19.3
>
>
>
> 18.9
>
>
>
> 18.4
>
>
>
> 18.0
>
>
>
> FT
>
>
>
> 21.5
>
>
>
> 20.9
>
>
>
> 20.5
>
>
>
>
>
> 9
>
>
>
> 27
>
>
>
> 19.1
>
>
>
> 18.6
>
>
>
> 18.3
>
>
>
> 17.8
>
>
>
> 17.4
>
>
>
>
>
> FT
>
>
>
>
>
> 10
>
>
>
> 23
>
>
>
> 18.9
>
>
>
> 18.4
>
>
>
> 18.1
>
>
>
> 17.6
>
>
>
> 17.2
>
>
>
>
>
>
>
>
> 11
>
>
>
> 19
>
>
>
> 18.6
>
>
>
> FT
>
>
>
> 17.8
>
>
>
> 17.4
>
>
>
> 17.0
>
>
>
>
>
>
>
>
> 12
>
>
>
> 16
>
>
>
> 18.4
>
>
>
>
> FT
>
>
>
> 17.1
>
>
>
> 16.8
>
>
>
>
>
>
>
>
> 13
>
>
>
> 12
>
>
>
> FT
>
>
>
>
>
>
>
>
>
>
>
>
> To Maintain constant power, correct manifold pressure approximately
> 0.17"hg. For each 10F variation in carburetor air temperature from
> standard altitude temperature. Add manifold pressure for air
> temperatures above standard; subtract for temperatures below standard
>
> * *
> * *
> **
> **
> **
> **
> **
> **
> **
> *http://www.matronics.com/contribution*
> **
> **
> **
> **
> **
> **
> **
> **
> *http://www.matronics.com/Navigator?RV-List*
> **
> **
> **
> *http://forums.matronics.com*
> **
> *
>
> *
Message 4
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| Subject: | RE: RV-List Digest: 7 Msgs - 12/07/08 |
SNIP>>>> Hi" I must be doing something wrong here, because I have posted
a
> message a few times, but no respond from anyone.>>>SNIP
Wow, this is getting scary. I'm here. I can be reached at the
following:
Vince Frazier
Flyboy Accessories
3965 Caborn Road
Mount Vernon, IN 47620
812-464-1839 M-Th
812-985-7309 Fr-Sun
www.flyboyaccessories.com
http://stores.ebay.com/flyboyaccessories
Message 5
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|
| Subject: | Re: IO-360 -b Series Power Chart - FOUND |
On Dec 8, 2008, at 8:11 AM, Tim Bryan wrote:
> And so if they are still lurking, I would love to have this chart
> for the O-360-A1A.
>
>
Not from Lycoming, but this is what I came up with using Kevin
Horton's spreadsheet. I made it for my use with a fixed pitch prop so
it isn't as suitable for the lower RPMs typically used with a constant
speed.
http://n5lp.net/Power.htm
Message 6
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| Subject: | IO-360 -b Series Power Chart - FOUND |
You might want to have a look at this URL:
http://3limafoxtrot.com/doc/PercentPowerEntriesO360A.pdf
Jack Hilditch
RV-9A project
_____
From: owner-rv-list-server@matronics.com
[mailto:owner-rv-list-server@matronics.com] On Behalf Of Kelly McMullen
Sent: Monday, December 08, 2008 10:27 AM
Subject: Re: RV-List: IO-360 -b Series Power Chart - FOUND
Should be almost identical, since both engines have the same cylinders
and power
ratings.
Tim Bryan wrote:
And so if they are still lurking, I would love to have this chart for
the
O-360-A1A.
Tim Bryan
RV-6 Flying
N616TB over 120 hours now
From: owner-rv-list-server@matronics.com
[mailto:owner-rv-list-server@matronics.com] On Behalf Of J Riffel
Sent: Saturday, December 06, 2008 8:34 AM
Subject: RV-List: IO-360 -b Series Power Chart - FOUND
A kind sole at Lycoming saw the RV post and sent this - which is
EXACTLY what
I was looking for. So I thought I'd share:
Fuel and Power Chart - Lycoming Model IO-360-B1B, -B1D, -B1E, -E1A, -
B1A
Press. Alt. 1000 Ft
Std. Alt. Temp. F=BA
99 Hp - 55% Rated Fuel Flow 45 Lb/Hr RPM & MAP
117 HP - 65% Rated Fuel Flow 50 Lb/Hr RPM & MAP
135 HP-75%Rated Fuel Flow 60 Lb/Hr RPM & MAP
2100
2200
2300
2400
2100
2200
2300
2400
2200
2300
2400
SL
59
21.2
20.7
20.2
19.7
24.0
23.4
22.8
22.2
26.0
25.4
24.7
1
55
21.0
20.5
20.0
19.5
23.8
23.2
22.5
22.0
25.8
25.1
24.5
2
52
20.7
20.3
19.7
19.3
23.5
22.9
22.3
21.8
25.5
24.8
24.2
3
48
20.5
20.0
19.5
19.1
23.2
22.7
22.0
21.5
25.3
24.6
24.0
4
45
20.3
19.8
19.3
18.9
23.0
22.5
21.8
21.3
25.1
24.3
23.8
5
41
20.0
19.6
19.1
18.6
22.7
22.2
21.6
21.1
FT
24.1
23.5
6
38
19.8
19.4
18.9
18.4
22.5
22.0
21.3
20.9
FT
23.3
7
34
19.6
19.2
18.7
18.2
22.0
21.8
21.1
20.7
FT
8
31
19.3
18.9
18.4
18.0
FT
21.5
20.9
20.5
9
27
19.1
18.6
18.3
17.8
17.4
FT
10
23
18.9
18.4
18.1
17.6
17.2
11
19
18.6
FT
17.8
17.4
17.0
12
16
18.4
FT
17.1
16.8
13
12
FT
To Maintain constant power, correct manifold pressure approximately
0.17"hg. For
each 10F variation in carburetor air temperature from standard altitude
temperature. Add manifold pressure for air temperatures above standard;
subtract
for temperatures below standard
<http://www.matronics.com/contribution>
http://www.matronics.com/contribution
<http://www.matronics.com/Navigator?RV-List>
http://www.matronics.com/Navigator?RV-List
<http://forums.matronics.com> http://forums.matronics.com
href="http://www.matronics.com/contribution">http://www.matronics.com/c
ontributi
on
href="http://www.matronics.com/Navigator?RV-List">http://www.matronics.
com/Navig
ator?RV-List
href="http://forums.matronics.com">http://forums.matronics.com
Message 7
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| Subject: | IO-360 -b Series Power Chart - FOUND |
Power increase as you go higher? I'm confused (which is normal).
_____
From: owner-rv-list-server@matronics.com
[mailto:owner-rv-list-server@matronics.com] On Behalf Of Jack Hilditch
Sent: Monday, December 08, 2008 8:04 AM
Subject: RE: RV-List: IO-360 -b Series Power Chart - FOUND
You might want to have a look at this URL:
http://3limafoxtrot.com/doc/PercentPowerEntriesO360A.pdf
Jack Hilditch
RV-9A project
_____
From: owner-rv-list-server@matronics.com
[mailto:owner-rv-list-server@matronics.com] On Behalf Of Kelly McMullen
Sent: Monday, December 08, 2008 10:27 AM
Subject: Re: RV-List: IO-360 -b Series Power Chart - FOUND
Should be almost identical, since both engines have the same cylinders
and
power ratings.
Tim Bryan wrote:
And so if they are still lurking, I would love to have this chart for
the
O-360-A1A.
Tim Bryan
RV-6 Flying
N616TB over 120 hours now
From: owner-rv-list-server@matronics.com
[mailto:owner-rv-list-server@matronics.com] On Behalf Of J Riffel
Sent: Saturday, December 06, 2008 8:34 AM
Subject: RV-List: IO-360 -b Series Power Chart - FOUND
A kind sole at Lycoming saw the RV post and sent this - which is
EXACTLY
what I was looking for. So I thought I'd share:
Fuel and Power Chart - Lycoming Model IO-360-B1B, -B1D, -B1E, -E1A, -
B1A
Press. Alt. 1000 Ft
Std. Alt. Temp. F=BA
99 Hp - 55% Rated Fuel Flow 45 Lb/Hr RPM & MAP
117 HP - 65% Rated Fuel Flow 50 Lb/Hr RPM & MAP
135 HP-75%Rated Fuel Flow 60 Lb/Hr RPM & MAP
2100
2200
2300
2400
2100
2200
2300
2400
2200
2300
2400
SL
59
21.2
20.7
20.2
19.7
24.0
23.4
22.8
22.2
26.0
25.4
24.7
1
55
21.0
20.5
20.0
19.5
23.8
23.2
22.5
22.0
25.8
25.1
24.5
2
52
20.7
20.3
19.7
19.3
23.5
22.9
22.3
21.8
25.5
24.8
24.2
3
48
20.5
20.0
19.5
19.1
23.2
22.7
22.0
21.5
25.3
24.6
24.0
4
45
20.3
19.8
19.3
18.9
23.0
22.5
21.8
21.3
25.1
24.3
23.8
5
41
20.0
19.6
19.1
18.6
22.7
22.2
21.6
21.1
FT
24.1
23.5
6
38
19.8
19.4
18.9
18.4
22.5
22.0
21.3
20.9
FT
23.3
7
34
19.6
19.2
18.7
18.2
22.0
21.8
21.1
20.7
FT
8
31
19.3
18.9
18.4
18.0
FT
21.5
20.9
20.5
9
27
19.1
18.6
18.3
17.8
17.4
FT
10
23
18.9
18.4
18.1
17.6
17.2
11
19
18.6
FT
17.8
17.4
17.0
12
16
18.4
FT
17.1
16.8
13
12
FT
To Maintain constant power, correct manifold pressure approximately
0.17"hg.
For each 10F variation in carburetor air temperature from standard
altitude
temperature. Add manifold pressure for air temperatures above standard;
subtract for temperatures below standard
<http://www.matronics.com/contribution>
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Message 8
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| Subject: | IO-360 -b Series Power Chart - FOUND |
Thanks everyone who replied. I got great info now.
Do Not Archive
Tim Bryan
RV-6 Flying
N616TB over 120 hours now
From: owner-rv-list-server@matronics.com
[mailto:owner-rv-list-server@matronics.com] On Behalf Of Jack Hilditch
Sent: Monday, December 08, 2008 10:04 AM
Subject: RE: RV-List: IO-360 -b Series Power Chart - FOUND
You might want to have a look at this URL:
http://3limafoxtrot.com/doc/PercentPowerEntriesO360A.pdf
Jack Hilditch
RV-9A project
_____
From: owner-rv-list-server@matronics.com
[mailto:owner-rv-list-server@matronics.com] On Behalf Of Kelly McMullen
Sent: Monday, December 08, 2008 10:27 AM
Subject: Re: RV-List: IO-360 -b Series Power Chart - FOUND
Should be almost identical, since both engines have the same cylinders
and
power ratings.
Tim Bryan wrote:
And so if they are still lurking, I would love to have this chart for
the
O-360-A1A.
Tim Bryan
RV-6 Flying
N616TB over 120 hours now
From: owner-rv-list-server@matronics.com
[mailto:owner-rv-list-server@matronics.com] On Behalf Of J Riffel
Sent: Saturday, December 06, 2008 8:34 AM
Subject: RV-List: IO-360 -b Series Power Chart - FOUND
A kind sole at Lycoming saw the RV post and sent this - which is
EXACTLY
what I was looking for. So I thought I'd share:
Fuel and Power Chart - Lycoming Model IO-360-B1B, -B1D, -B1E, -E1A, -
B1A
Press. Alt. 1000 Ft
Std. Alt. Temp. F=BA
99 Hp - 55% Rated Fuel Flow 45 Lb/Hr RPM & MAP
117 HP - 65% Rated Fuel Flow 50 Lb/Hr RPM & MAP
135 HP-75%Rated Fuel Flow 60 Lb/Hr RPM & MAP
2100
2200
2300
2400
2100
2200
2300
2400
2200
2300
2400
SL
59
21.2
20.7
20.2
19.7
24.0
23.4
22.8
22.2
26.0
25.4
24.7
1
55
21.0
20.5
20.0
19.5
23.8
23.2
22.5
22.0
25.8
25.1
24.5
2
52
20.7
20.3
19.7
19.3
23.5
22.9
22.3
21.8
25.5
24.8
24.2
3
48
20.5
20.0
19.5
19.1
23.2
22.7
22.0
21.5
25.3
24.6
24.0
4
45
20.3
19.8
19.3
18.9
23.0
22.5
21.8
21.3
25.1
24.3
23.8
5
41
20.0
19.6
19.1
18.6
22.7
22.2
21.6
21.1
FT
24.1
23.5
6
38
19.8
19.4
18.9
18.4
22.5
22.0
21.3
20.9
FT
23.3
7
34
19.6
19.2
18.7
18.2
22.0
21.8
21.1
20.7
FT
8
31
19.3
18.9
18.4
18.0
FT
21.5
20.9
20.5
9
27
19.1
18.6
18.3
17.8
17.4
FT
10
23
18.9
18.4
18.1
17.6
17.2
11
19
18.6
FT
17.8
17.4
17.0
12
16
18.4
FT
17.1
16.8
13
12
FT
To Maintain constant power, correct manifold pressure approximately
0.17"hg.
For each 10F variation in carburetor air temperature from standard
altitude
temperature. Add manifold pressure for air temperatures above standard;
subtract for temperatures below standard
http://www.matronics.com/contribution
http://www.matronics.com/Navigator?RV-List
http://forums.matronics.com
href="http://www.matronics.com/contribution">http://www.matronics.com/c
ontri
bution
href="http://www.matronics.com/Navigator?RV-List">http://www.matronics.
com/N
avigator?RV-List
href="http://forums.matronics.com">http://forums.matronics.com
http://www.matronics.com/contribution
Message 9
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| Subject: | Re: Pitot testing |
Charlie,
Pitot-static error is made up of instrument error and position error (gener
ally of the static source).- Instrument error is found on the ground with
test equipment attached to the pitot and static probes (91.441 defines the
requirements for the altimeter for IFR flight).- The position error is f
ound in flight (23.1323 sets the limits for Part 23 airplanes).
Your high indicated airspeed at higher speeds is probably due to the static
port seeing too low of a pressure because of the way in which the air flow
s over it in high-speed flight, rather than the pitot probe seeing too much
.- I'm guessing your altimeter is way off too (reading higher than you ac
tually are).- For an example airplane flying 150 kts at 8000 ft a static
pressure error leading to a 5 kt airspeed discrepancy would make your altim
eter off by 86 ft.- A static error causing 5 kt airspeed error at 250 kts
would mean a 147 ft altitude error.- Everyone likes to compare airspeed,
but it's good to ensure the altimeter is telling you the truth too!
Tuning the static port is an art requiring trial and error (perhaps using t
he trials of others for similar type aircraft).- The static port may be t
uned with raised nubs and plates placed in front of or behind the port, or
the port itself may be raised above the skin (a pop rivet is sometimes used
).- Perhaps others can provide
RV-specific recommendations for tuning the static port.
As Kevin Horton has noted, simply averaging the groundspeed from four direc
tions to derive true airspeed is fraught with error, especially when the wi
nds are high.- I suggest you use the link he provided.- It's not hard t
o follow this method, and it'll give you correct results.- Use the static
port to tune your airspeed, and your altimeter will give you a better answ
er too!
Note that the error is not constant with airspeed--it may be near zero at e
conomy cruise speed, and quite significant at high and low speeds.- Flyin
g past a TV antenna tower or mountaintop at various altitudes can be used t
o compare indicated altitude at different airspeeds (be careful!)- For in
stance, if you know that your airspeed reads correctly at 100 kts, then you
can compare indicated altitude at this speed with indicated altitude at hi
gh speed as you fly at a known constant altitude past a mountaintop or towe
r.
Hope this is useful.
-Have fun and be safe!
- Kyrilian
--- On Wed, 12/3/08, Charles Brame <chasb@satx.rr.com> wrote:
<snip>
I find it interesting that Ralph's manometer tests also show a higher than
actual airspeed indication at high speeds. I am at a loss as to why this ha
ppens and wonder if others have noticed similar errors.-
Is this typical of Van's airspeed instruments? An acquaintance with an RV-9
and a Dynon system says
his airspeed indications are very accurate at all speeds and altitudes.-
Inquiring minds want to know.
Charlie BrameRV-6A -N11CBSan Antonio
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