Today's Message Index:
----------------------
1. 11:13 AM - Re: [TailwindForum] Jim C and your plane (DaveM)
2. 11:25 AM - Re: Re: [TailwindForum] Jim C and your plane (Jim Clement)
3. 04:22 PM - Re: Jim C and your plane (Fred Weaver)
Message 1
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| Subject: | Re: [TailwindForum] Jim C and your plane |
Jim:
I don't know what Fred's plane (N168X) weighs, but N168A (a trike for those who
don't know) weighs 942# empty (with oil). 896# seems reasonably light, and certainly
within normal expectations. It does seem like your prop should turn
up some more. I can get almost 2900 RPM @WOT at 2500' in cooler temps with the
Aymar Demuth prop on N168A, and will be doing around 205-207+/- MPH (true).
Dave
----- Original Message -----
From: Jim Clement
To: TailwindForum@yahoogroups.com
Sent: Monday, June 13, 2005 10:58 AM
Subject: Re: [TailwindForum] Jim C and your plane
The empty weight came out somewhat heavy at 896 pounds. The prop is a Felix
68 X 76 pitch. The performance of the prop did not match the numbers as it
would only static 2000 rpm at best and required a lot of changes to get
satisfactory results. Still not real happy with it.
The numbers below might be about 3 mph fast but close, more testing seems to
come closer to 187-188 mph @ 2500' 23" mp. 2500. rpm. Top speed seems to
vary between 204 - 207 mph. Jim
----- Original Message -----
From: "Guido von Allmen" <lapulce@freesurf.ch>
To: <TailwindForum@yahoogroups.com>
Sent: Monday, June 13, 2005 12:04 PM
Subject: Re: [TailwindForum] Jim C and your plane
> Thanks a lot for these interesting data Jim. May I ask what are the
> numbers of the prop you are using and what was the weight of the plane.
> Thanks again.
> Guido
>
> On May 7, 2005, at 3:16 AM, Jim Clement wrote:
>
>>
>> Here are a few numbers, speeds are two way average using GPS in MPH.
>>
>> 2500', 2500rpm, 23" mp about 190. ias181 mph
>> 2500', 2600rpm, 24.75 mp, 195mph, ias 187 mph
>> These numbers might not be accurate because it has been so bumpy down
>> low
>> it is hard to hold altitude or write numbers down.
>>
>> 4000', 2600rpm, 23"mp, 195mph. ias 180 mph
>> 4000', 2625-2650 rpm, full throttle, 25'' mp, 203 mph, ias 192 mph
>>
>> 8000', 2600 rpm full throttle, 21" mp,203 mph, ias 172 mph
>>
>> Climb from 4000' to 8000' about1300 fpm @150 mph.
>> Temp estimated at 50F
>> Top speed is somewhat slow but cruise at lower power settings seem the
>> be
>> good. More rpm might pick up the top some but I am going to leave
>> things
>> alone and see what happens when it gets hot high density altitudes.
>> Jim
>>
>>
>>
>>
>>
>> The Tailwind Forum group site is:
>> http://groups.yahoo.com/group/TailwindForum
>>
>>
>>
>>
>>
>>
>>
>
>
>
>
> The Tailwind Forum group site is:
> http://groups.yahoo.com/group/TailwindForum
>
>
>
>
>
>
>
>
>
>
The Tailwind Forum group site is: http://groups.yahoo.com/group/TailwindForum
a.. To visit your group on the web, go to:
http://groups.yahoo.com/group/TailwindForum/
b.. To unsubscribe from this group, send an email to:
TailwindForum-unsubscribe@yahoogroups.com
Message 2
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| Subject: | Re: [TailwindForum] Jim C and your plane |
Dave, The 2000 rpm was the way I received it. I didn't fly with it before changing.
It now turns 2750 - 2800. Removed about three pounds of wood. Jim
----- Original Message -----
From: DaveM
To: TailwindForum@yahoogroups.com
Cc: Tailwind list
Sent: Monday, June 13, 2005 1:13 PM
Subject: Tailwind-List: Re: [TailwindForum] Jim C and your plane
Jim:
I don't know what Fred's plane (N168X) weighs, but N168A (a trike for those who
don't know) weighs 942# empty (with oil). 896# seems reasonably light, and
certainly within normal expectations. It does seem like your prop should turn
up some more. I can get almost 2900 RPM @WOT at 2500' in cooler temps with
the Aymar Demuth prop on N168A, and will be doing around 205-207+/- MPH (true).
Dave
----- Original Message -----
From: Jim Clement
To: TailwindForum@yahoogroups.com
Sent: Monday, June 13, 2005 10:58 AM
Subject: Re: [TailwindForum] Jim C and your plane
The empty weight came out somewhat heavy at 896 pounds. The prop is a Felix
68 X 76 pitch. The performance of the prop did not match the numbers as it
would only static 2000 rpm at best and required a lot of changes to get
satisfactory results. Still not real happy with it.
The numbers below might be about 3 mph fast but close, more testing seems to
come closer to 187-188 mph @ 2500' 23" mp. 2500. rpm. Top speed seems to
vary between 204 - 207 mph. Jim
----- Original Message -----
From: "Guido von Allmen" <lapulce@freesurf.ch>
To: <TailwindForum@yahoogroups.com>
Sent: Monday, June 13, 2005 12:04 PM
Subject: Re: [TailwindForum] Jim C and your plane
> Thanks a lot for these interesting data Jim. May I ask what are the
> numbers of the prop you are using and what was the weight of the plane.
> Thanks again.
> Guido
>
> On May 7, 2005, at 3:16 AM, Jim Clement wrote:
>
>>
>> Here are a few numbers, speeds are two way average using GPS in MPH.
>>
>> 2500', 2500rpm, 23" mp about 190. ias181 mph
>> 2500', 2600rpm, 24.75 mp, 195mph, ias 187 mph
>> These numbers might not be accurate because it has been so bumpy down
>> low
>> it is hard to hold altitude or write numbers down.
>>
>> 4000', 2600rpm, 23"mp, 195mph. ias 180 mph
>> 4000', 2625-2650 rpm, full throttle, 25'' mp, 203 mph, ias 192 mph
>>
>> 8000', 2600 rpm full throttle, 21" mp,203 mph, ias 172 mph
>>
>> Climb from 4000' to 8000' about1300 fpm @150 mph.
>> Temp estimated at 50F
>> Top speed is somewhat slow but cruise at lower power settings seem the
>> be
>> good. More rpm might pick up the top some but I am going to leave
>> things
>> alone and see what happens when it gets hot high density altitudes.
>> Jim
>>
>>
>>
>>
>>
>> The Tailwind Forum group site is:
>> http://groups.yahoo.com/group/TailwindForum
>>
>>
>>
>>
>>
>>
>>
>
>
>
>
> The Tailwind Forum group site is:
> http://groups.yahoo.com/group/TailwindForum
>
>
>
>
>
>
>
>
>
>
The Tailwind Forum group site is: http://groups.yahoo.com/group/TailwindForum
a.. To visit your group on the web, go to:
http://groups.yahoo.com/group/TailwindForum/
b.. To unsubscribe from this group, send an email to:
TailwindForum-unsubscribe@yahoogroups.com
Message 3
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| Subject: | Re: Jim C and your plane |
Dave.... I will weigh it before I go to Baraboo. I'm finally getting my stuff
cleaned up and hope to finish the annual in a couple of weeks. At my speed, that
will take about a month since I screw around so much.
Weav
----- Original Message -----
From: DaveM
To: TailwindForum@yahoogroups.com
Cc: Tailwind list
Sent: Monday, June 13, 2005 11:13 AM
Subject: Tailwind-List: Re: [TailwindForum] Jim C and your plane
Jim:
I don't know what Fred's plane (N168X) weighs, but N168A (a trike for those who
don't know) weighs 942# empty (with oil). 896# seems reasonably light, and
certainly within normal expectations. It does seem like your prop should turn
up some more. I can get almost 2900 RPM @WOT at 2500' in cooler temps with
the Aymar Demuth prop on N168A, and will be doing around 205-207+/- MPH (true).
Dave
----- Original Message -----
From: Jim Clement
To: TailwindForum@yahoogroups.com
Sent: Monday, June 13, 2005 10:58 AM
Subject: Re: [TailwindForum] Jim C and your plane
The empty weight came out somewhat heavy at 896 pounds. The prop is a Felix
68 X 76 pitch. The performance of the prop did not match the numbers as it
would only static 2000 rpm at best and required a lot of changes to get
satisfactory results. Still not real happy with it.
The numbers below might be about 3 mph fast but close, more testing seems to
come closer to 187-188 mph @ 2500' 23" mp. 2500. rpm. Top speed seems to
vary between 204 - 207 mph. Jim
----- Original Message -----
From: "Guido von Allmen" <lapulce@freesurf.ch>
To: <TailwindForum@yahoogroups.com>
Sent: Monday, June 13, 2005 12:04 PM
Subject: Re: [TailwindForum] Jim C and your plane
> Thanks a lot for these interesting data Jim. May I ask what are the
> numbers of the prop you are using and what was the weight of the plane.
> Thanks again.
> Guido
>
> On May 7, 2005, at 3:16 AM, Jim Clement wrote:
>
>>
>> Here are a few numbers, speeds are two way average using GPS in MPH.
>>
>> 2500', 2500rpm, 23" mp about 190. ias181 mph
>> 2500', 2600rpm, 24.75 mp, 195mph, ias 187 mph
>> These numbers might not be accurate because it has been so bumpy down
>> low
>> it is hard to hold altitude or write numbers down.
>>
>> 4000', 2600rpm, 23"mp, 195mph. ias 180 mph
>> 4000', 2625-2650 rpm, full throttle, 25'' mp, 203 mph, ias 192 mph
>>
>> 8000', 2600 rpm full throttle, 21" mp,203 mph, ias 172 mph
>>
>> Climb from 4000' to 8000' about1300 fpm @150 mph.
>> Temp estimated at 50F
>> Top speed is somewhat slow but cruise at lower power settings seem the
>> be
>> good. More rpm might pick up the top some but I am going to leave
>> things
>> alone and see what happens when it gets hot high density altitudes.
>> Jim
>>
>>
>>
>>
>>
>> The Tailwind Forum group site is:
>> http://groups.yahoo.com/group/TailwindForum
>>
>>
>>
>>
>>
>>
>>
>
>
>
>
> The Tailwind Forum group site is:
> http://groups.yahoo.com/group/TailwindForum
>
>
>
>
>
>
>
>
>
>
The Tailwind Forum group site is: http://groups.yahoo.com/group/TailwindForum
a.. To visit your group on the web, go to:
http://groups.yahoo.com/group/TailwindForum/
b.. To unsubscribe from this group, send an email to:
TailwindForum-unsubscribe@yahoogroups.com
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