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some Jabiru numbers

 
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Lynn Matteson



Joined: 10 Jan 2006
Posts: 2778
Location: Grass Lake, Michigan
PostPosted: Thu Aug 17, 2006 5:11 pm    Post subject: some Jabiru numbers Reply with quote
Hi Gary-
I've got some numbers for you...I'll just post 'em and get going on a
cold one, and we can discuss 'em later...

Wind was 4 knots...maybe different at the 2500-3000 ft I was at. I am
at 960-980-1000' elevation here in Mich. on most of the airports nearby.

Max climb out rpm was 2840...it's always about that.

2640rpm=95mph ground speed across wind direction (at)3200'

2750-60=100mph ground speed across wind direction (at)3500

Max speed today was 123mph grd spd(at) 3120 rpm (at) 2200'

Looks like every 5mph costs me about 100rpm, eh?

upwind: 88mph grd spd 2400' (at)2530 rpm
92mph air spd at same time

downwind: 96mph grd spd 2300' (at)2500 rpm
86 air spd at same time

288° head temp....1427° EGT...then 271° head and 1404° EGT (at) 90 mph and
I didn't record what direction or rpm on that one, or if I loaded or
unloaded the prop.

also: 2360rpm (at) 94 mph grd spd, and 2350rpm (at) 93 mph grd spd

I tried to stay crosswind at all times except for the above mentioned
upwind and downwind figures.

Well, there you have it...the temp was about 75 F, the baro pressure
was about 31.04 earlier in the day and hadn't changed much as I recall.
I really wasn't paying much attention to what the conditions
were...just nice. : ) These figures were taken at 6:45 to 7:15 PM here
in Michigan, where flying for a sport pilot has to end about 8:40 these
days...gettin' dark.

Lynn
Kitfox IV Speedster...Jabiru 2200
p.s. wheelpants, strut fairings, airfoiled hort stab and fin and rudder

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Lynn
Kitfox IV-Jabiru 2200
N369LM
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PostPosted: Thu Aug 17, 2006 5:26 pm    Post subject: some Jabiru numbers Reply with quote
What prop are you swinging on the Jabiru?

On 8/17/06, Lynn Matteson <lynnmatt(at)jps.net (lynnmatt(at)jps.net)> wrote:
Quote:
--> Kitfox-List message posted by: Lynn Matteson <lynnmatt(at)jps.net (lynnmatt(at)jps.net)>

Hi Gary-
I've got some numbers for you...I'll just post 'em and get going on a
cold one, and we can discuss 'em later...

Wind was 4 knots...maybe different at the 2500-3000 ft I was at. I am
at 960-980-1000' elevation here in Mich. on most of the airports nearby.

Max climb out rpm was 2840...it's always about that.

2640rpm=95mph ground speed across wind direction (at)3200'

2750-60=100mph ground speed across wind direction (at)3500

Max speed today was 123mph grd spd(at) 3120 rpm (at) 2200'

Looks like every 5mph costs me about 100rpm, eh?

upwind: 88mph grd spd 2400' (at)2530 rpm
  92mph air spd at same time

downwind: 96mph grd spd 2300' (at)2500 rpm
  86 air spd at same time

288° head temp....1427° EGT...then 271° head and 1404° EGT (at) 90 mph and
I didn't record what direction or rpm on that one, or if I loaded or
unloaded the prop.

also: 2360rpm (at) 94 mph grd spd, and 2350rpm (at) 93 mph grd spd

I tried to stay crosswind at all times except for the above mentioned
upwind and downwind figures.

Well, there you have it...the temp was about 75 F, the baro pressure
was about 31.04 earlier in the day and hadn't changed much as I recall.
I really wasn't paying much attention to what the conditions
were...just nice. : ) These figures were taken at 6:45 to 7:15 PM here
in Michigan, where flying for a sport pilot has to end about 8:40 these
days...gettin' dark.

Lynn
Kitfox IV Speedster...Jabiru 2200
p.s. wheelpants, strut fairings, airfoiled hort stab and fin and rudder - The Kitfox-List Email Forum - eat content now also available via the Web Forums! sp; mail List Wiki! sp; - List Cont! &nb========================


--
John Marzulli
http://701Builder.blogspot.com/

"Flying a plane is no different than riding a bicycle... it's just a lot harder to put baseball cards in the spokes. [quote][b]

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Lynn Matteson



Joined: 10 Jan 2006
Posts: 2778
Location: Grass Lake, Michigan
PostPosted: Fri Aug 18, 2006 4:11 am    Post subject: some Jabiru numbers Reply with quote
Sensenich 62HJ46

Lynn
On Thursday, August 17, 2006, at 09:25 PM, John Marzulli wrote:

Quote:
What prop are you swinging on the Jabiru?

On 8/17/06, Lynn Matteson <lynnmatt(at)jps.net> wrote:



Hi Gary-
I've got some numbers for you...I'll just post 'em and get going on a
cold one, and we can discuss 'em later...

Wind was 4 knots...maybe different at the 2500-3000 ft I was at. I am
at 960-980-1000' elevation here in Mich. on most of the airports
nearby.

Max climb out rpm was 2840...it's always about that.

2640rpm=95mph ground speed across wind direction (at)3200'

2750-60=100mph ground speed across wind direction (at)3500

Max speed today was 123mph grd spd(at) 3120 rpm (at) 2200'

Looks like every 5mph costs me about 100rpm, eh?

upwind:  88mph grd spd 2400' (at)2530 rpm
                92mph air spd at same time

downwind:  96mph grd spd 2300' (at)2500 rpm
                   86 air spd at same time

288° head temp....1427° EGT...then 271° head and 1404° EGT (at) 90 mph and
I didn't record what direction or rpm on that one, or if I loaded or
unloaded the prop.

also: 2360rpm (at) 94 mph grd spd, and 2350rpm (at) 93 mph grd spd

I tried to stay crosswind at all times except for the above mentioned
upwind and downwind figures.

Well, there you have it...the temp was about 75 F, the baro pressure
was about 31.04 earlier in the day and hadn't changed much as I recall.
I really wasn't paying much attention to what the conditions
were...just nice. : ) These figures were taken at 6:45 to 7:15 PM here
in Michigan, where flying for a sport pilot has to end about 8:40 these
days...gettin' dark.

Lynn
Kitfox IV Speedster...Jabiru 2200
p.s. wheelpants, strut fairings, airfoiled hort stab and fin and
rudder       - The Kitfox-List Email Forum - eat content now also
available via the Web Forums! sp;            mail List Wiki!
sp;           - List Cont!             &nb========================



Quote:


--
John Marzulli
http://701Builder.blogspot.com/

"Flying a plane is no different than riding a bicycle... it's just a
lot harder to put baseball cards in the spokes.




- The Matronics Kitfox-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Kitfox-List

_________________
Lynn
Kitfox IV-Jabiru 2200
N369LM
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View user's profile Send private message Send e-mail
mdps_mc(at)swoca.net
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PostPosted: Fri Aug 18, 2006 5:13 am    Post subject: some Jabiru numbers Reply with quote
If you call the Sensenich company "the wood prop division not the metal prop division" you should be able to talk to a gentleman that has done quite a bit of work with the Jabiru. I spoke to him when I was going through the same process. Sorry I cant remember his name.

Mike Chaney
[quote] --

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