main@Q-List.groups.io

Updated Q2 plans online....

olderprograms <groups@...>

#24264

I fixed the Q2 plans posted on my blog so that they were easier to
navigate and search.  The "Table of Contents" now has links to the
start of each of the 20 chapters, and I added "next - previous - Return
to Table of Contents" buttons at the top of each page.

Hopefully this will make it easier look through them.  Let me know if
you have any ideas or suggestions.  More to come soon!

You can visit the Q2 plans directly by clicking here:

http://www.quickheads.com/danyager/index.php?/categories/4-Q2-Plans

Let me know what you think.

Cheers,
Dan
Q2 kit # 2025

Re: prop size?

Jay <scheevel@...>

#24262

Ron Weiss wrote:

"...because all the info I can get is that some reduction units don't 

like 2 bladed wood props(harmonic issues). One guy used a Prince and 

liked the performance, but, there was this vibration?...."

It sounds like the problem may not be the prop by itself. I would look
instead at the prop/reduction drive combination. The two components together
may produce the harmonic vibration that is noted. Let me explain:

If the reduction drive assembly is not stiff enough, then it also can
contribute to the harmonics of the system. The prop itself is not designed
to be completely stiff (nor should it be), but props are designed and
balanced so as not to destructively resonate on their own. 

However, when a prop is bolted to another assembly that is not stiff enough,
the elastic/inertial response of the combination could produce unanticipated
harmonic oscillations. 

In the traditional aircraft installation, the prop is bolted to the
crankshaft (prop-flange), which is VERY stiff and is also dampened by the
engine mass. In this case, the harmonic modes of the prop/engine combination
are outside the range of any prop oscillation modes, so significant harmonic
oscillations are effectively damped. This may not be the case when the prop
is connected to a reduction drive where the reduction drive is less stiff
than the standard crankshaft. 

This is probably part of the reason the FAA certifies prop-engine
combinations instead of just the prop.

Something to consider..

Jay Scheevel - Tri-Q, still building

Re: prop size?

Steve Ham <sham@...>

#24263

Show quoted text

-----Original Message-----
From: Q-LIST@... [mailto:Q-LIST@...] On Behalf Of
Jon Finley
Sent: Tuesday, June 06, 2006 9:10 AM
To: Q-LIST@...
Subject: [Q-LIST] Re: prop size?

 

 

 

Jon, What Did you do ???  give up The Great North for some sunshine and
sand???__Are you keeping your Q?

 

Steve Ham

 

 

 

 

._,_.___ 

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Re: prop size?

MartinErni@...

#24271

David,
    I have a 2 blade electric constant speed MT.
Earnest

Re: prop size?

Doug Humble <hawkidoug@...>

#24260

Hey Jon Finley, nice to hear from you!  I sent an email to you off list and it got bounced as I thought it might.  Please email me off list at HawkiDoug@... if you would please.

Doug "Hawkeye" Humble
www.asignabove.net
Omaha NE
N25974

Show quoted text

----- Original Message ----- 
  From: Jon Finley 
  To: Q-LIST@... 
  Sent: Tuesday, June 06, 2006 8:09 AM
  Subject: [Q-LIST] Re: prop size?

  Hi Ron,

  Afraid I don't check messages here very often so missed your call for
  help.

  Yes, I am in the middle of moving to an airpark (Yippee!!!) near
  Albuquerque, NM so my site is down.

  As you have already found, you won't find much help out there for prop
  setup on the Soob. It can be very frustrating but remember that the
  fun is typically in the journey and not just the destination.

  I am running a 55" 3-blade Warp Drive that had the blades profiled for
  high-rpm use by Gary Hunter - remember, I am direct-drive. Currently,
  the blades are set at 14 degrees. I do not think this prop is very
  efficient but that is purely a gut feeling - I have no data to back it
  up. However; it is very adjustable and that is the reason that I'm
  using it.

  Do to my low thrust line, 55" was the maximum that I could get away
  with. Depending on your reduction, you might be able to use a
  slightly longer prop. In any case, you will likely be limited to less
  than 60". 

  With my Soob, an in-flight adjustable prop would be the cat's meow.
  They are a bit too spendy for my checkbook though. 

  Not terribly helpful... Sorry, wish I had a solid answer for you.

  Jon Finley

  > > > > > > > > ----- Original Message ----- 
  > > > > > > > > From: Ron Weiss 
  > > > > > > > > To: Q-LIST@... 
  > > > > > > > > Sent: Thursday, June 01, 2006 8:39 PM
  > > > > > > > > Subject: [Q-LIST] prop size?
  > > > > > > > > 
  > > > > > > > > 
  > > > > > > > > Does anyone have a suggested size prop I should run 
  > on 
  > > a 
  > > > > > Subaru 
  > > > > > > > EJ 22, 
  > > > > > > > > 165hp. at 5500rpm. 2 to 1 reduction. No pure wood 
  > > props 
  > > > > > > > please....Ron

Re: Spring Fling 06

Tri-Q1 <rryan@...>

#24259

Keith, Would you give us a complete description of your Q1's demo
flight ?

Ryan

--- In Q-LIST@..., "Keith Welsh" <kfly@...> wrote:

Everyone there was very appreciative that they were able to see andexperience all they came for and no one left disappointed. And that is
always the primary objective. Heck I even gave my best ever Q-1 flight
demo. A few commented that they didn't know an Onan Quickie could do
all that. In experienced hands it can be demoed impressively. The
secret is knowing that gravity can be used as an amassing airspeed
builder when needed. Of course with only 20hp it bleeds off quickly
when the maneuver begins but starting at 140 mph at full throttle buys
allot of time to demonstrate a Quickie. 

For the Spring Fling 2006
Keith Welsh
Quickie N494K

Re: prop size?

Leon - C <leon@...>

#24257

David;

With the offset thrust line (I assume a belt reduction with the 2/1 ratio rather than planetary) is is possable that whirl mode resonance might also be a problem and contribute to prop flutter even if properly "clocked"?  I have seen visable resonance of this type with some ultralight aircraft.
============
Leon

The spreadsheet Leon tried to send you is located here:http://david.gall.com/files/Airplane/Prop-100.xls.
It is based on NACA Technical Memorandum 212. It should be sufficient to get
you "into the ballpark" for your propeller selection. It can recommend pitch
and diameter for either a two- or a three-bladed prop.

Your reported propeller failures sound like resonance problems. With a 2:1
reduction, the propeller is in lock-step with the vibration of the engine
from the power pulses. <<

Re: prop size?

Jon Finley <jon@...>

#24258

Hi Ron,

Afraid I don't check messages here very often so missed your call for
help.

Yes, I am in the middle of moving to an airpark (Yippee!!!) near
Albuquerque, NM so my site is down.

As you have already found, you won't find much help out there for prop
setup on the Soob.  It can be very frustrating but remember that the
fun is typically in the journey and not just the destination.

I am running a 55" 3-blade Warp Drive that had the blades profiled for
high-rpm use by Gary Hunter - remember, I am direct-drive. Currently,
the blades are set at 14 degrees.  I do not think this prop is very
efficient but that is purely a gut feeling - I have no data to back it
up.  However; it is very adjustable and that is the reason that I'm
using it.

Do to my low thrust line, 55" was the maximum that I could get away
with.  Depending on your reduction, you might be able to use a
slightly longer prop.  In any case, you will likely be limited to less
than 60".

With my Soob, an in-flight adjustable prop would be the cat's meow.
They are a bit too spendy for my checkbook though.

Not terribly helpful... Sorry, wish I had a solid answer for you.

Jon Finley

Show quoted text

  ----- Original Message -----
  From: Ron Weiss
  To: Q-LIST@...
  Sent: Thursday, June 01, 2006 8:39 PM
  Subject: [Q-LIST] prop size?


  Does anyone have a suggested size prop I should runon
a
Subaru
EJ 22,
  165hp. at 5500rpm. 2 to 1 reduction. No pure woodprops
please....Ron

Re: prop size?

MartinErni@...

#24261

David,
    I have always mounted my props as you describe  until I got my MT. MT 
installation instructions specifically state that the prop  is to be mounted 
vertically at TDC. Any idea why they do it  differently?
Earnest

Re: Spring Fling 06

Keith Welsh <kfly@...>

#24256

Thanks Jeff for coming:

Glad you enjoyed yourself and liked the burgers. Kinda sweated that one at first, glad everyone liked em.
I received several compliments so I guess I'll fix them again. One person asked about the local of the pig and it did come from the home farm. I just grabbed a few boxes, said adios, and headed for the airport.
Thanks for mentioning the airport, was wondering how it was received. And glad you liked the Q1 demo. I have very few in flight pix. If you have any could you send a few.

Oh and thanks for saving Sam's day. That was GREAT!! One never knows what lays around the corner at these events.

Thanks again
Keith

Show quoted text

----- Original Message ----- 
  From: jeffs912ex@... 
  To: Q-LIST@... 
  Sent: Monday, June 05, 2006 2:56 PM
  Subject: Re: [Q-LIST] Spring Fling 06

  Thanks Keith, 
  Did a great job. The burgers were excellent.  Good choice  for airports, felt 
  welcomed by all. First time I saw a Q-1 perform, very  cool! Nice looking 
  machine too.

  Jeff Sell

  Quickie Builders Association WEB site
  http://www.quickiebuilders.org

  SPONSORED LINKS Aviation maintenance  Aviation maintenance training  Aviation maintenance schools  
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Re: prop size?

Ron Weiss <ronweiss4@...>

#24255

--- Awesome info!!!! Thanks,RonIn Q-LIST@..., "David J.
Gall" <David@...> wrote:

Ron,

The spreadsheet Leon tried to send you is located here:
http://david.gall.com/files/Airplane/Prop-100.xls.
It is based on NACA Technical Memorandum 212. It should besufficient to get
you "into the ballpark" for your propeller selection. It canrecommend pitch
and diameter for either a two- or a three-bladed prop.

Your reported propeller failures sound like resonance problems.With a 2:1
reduction, the propeller is in lock-step with the vibration of theengine
from the power pulses. This is not due to "some reduction units"but is
characteristic of the gear ratio and the orientation of thepropeller. Most
reduciton units use a different, non-integer ratio in an effort toalleviate
this problem. Some use various vibration dampeners, but the realproblem is
the ratio and the orientation of the propeller.

For a reduction unit with an integer ratio or for a direct driveengine,
(assuming a horizontally-opposed engine like a Subaru orContinental) the
propeller needs to be installed in such a manner that it ishorizontal when
the power pulses occur throughout the crankshaft rotation. This isreferred
to as "clocking" the prop. Set the engine at Top Dead Center theninstall
the prop with the blades horizontal.

If you install the prop with the blades vertical when the engineis at TDC,
then the power pulses impart a bending load on the prop as theymove the
prop hub laterally left-to-right while the prop is alignedvertically. This
bends the prop and sets it to oscillating. If the naturaloscillating
frequency of the prop is close to a whole-number multiple of theRPM,
resonance may occur. Even absent resonance, large forces may buildup in the
prop or in the friction surface where the prop is clamped in theprop
hub/crush plate, leading to prop failure.

See the file "Installing Wood Propellers.rtf" in the files area ortry this
link for more info:
http://f3.grp.yahoofs.com/v1/wP2ERN5XhWLms7lChuzq63Jm4Lag52JrmvgqpGHO
oOPIEPR
Np3D-AnqusooTSR48-zr837BdIKoeWR27ce1vF2SdJGKUea4G/Installing%20Wood%20Propel
lers.rtf


David J. Gall

-----Original Message-----
From: Q-LIST@... [mailto:Q-LIST@...]
On Behalf Of Ron Weiss
Sent: Sunday, June 04, 2006 10:29 PM
To: Q-LIST@...
Subject: [Q-LIST] Re: prop size?

--- Relax Steve, My attempt at humor wasen't very funny.
However here's my dilemma. In the last couple of weeks I've
been trying to get info on the airsoob site. I have a
Subie-Lyc 2.2. Apparently no one with this set up has logged
on in the last couple of weeks because all the info I can get
is that some reduction units don't like 2 bladed wood
props(harmonic issues). One guy used a Prince and liked the
performance, but, there was this vibration? He seemed to like
his Warp Drive, however, it didn't perform as well! Still, I
didn't get measurements for my motor( diameter, pitch, breastsize)?
I've been to many different propeller websites with the same
"aren't really sure" answer. Catto even flatly refused and
sent me to Prince! A@P's seem to twitch when I mention
Subaru. I don't mind paying for information, but, I can't
seem to find any. Leon sent me a "prop size sheet" that
didn't get through. Finley's website won't come up, however,
I do recall very few specs, mostly set up. I do remember him
running or ran a Warp Drive. So, if anyone comes across a
high performance airplane with a Subaru 2.2 in the nose, if
you could please take a moment and ask him or her....What
size prop are you running? I'd really appreciate it! Ron

Re: prop size?

David J. Gall

#24254

Ron,

The spreadsheet Leon tried to send you is located here:
http://david.gall.com/files/Airplane/Prop-100.xls.
It is based on NACA Technical Memorandum 212. It should be sufficient to get
you "into the ballpark" for your propeller selection. It can recommend pitch
and diameter for either a two- or a three-bladed prop.

Your reported propeller failures sound like resonance problems. With a 2:1
reduction, the propeller is in lock-step with the vibration of the engine
from the power pulses. This is not due to "some reduction units" but is
characteristic of the gear ratio and the orientation of the propeller. Most
reduciton units use a different, non-integer ratio in an effort to alleviate
this problem. Some use various vibration dampeners, but the real problem is
the ratio and the orientation of the propeller. 

For a reduction unit with an integer ratio or for a direct drive engine,
(assuming a horizontally-opposed engine like a Subaru or Continental) the
propeller needs to be installed in such a manner that it is horizontal when
the power pulses occur throughout the crankshaft rotation. This is referred
to as "clocking" the prop. Set the engine at Top Dead Center then install
the prop with the blades horizontal.

If you install the prop with the blades vertical when the engine is at TDC,
then the power pulses impart a bending load on the prop as they move the
prop hub laterally left-to-right while the prop is aligned vertically. This
bends the prop and sets it to oscillating. If the natural oscillating
frequency of the prop is close to a whole-number multiple of the RPM,
resonance may occur. Even absent resonance, large forces may build up in the
prop or in the friction surface where the prop is clamped in the prop
hub/crush plate, leading to prop failure.

See the file "Installing Wood Propellers.rtf" in the files area or try this
link for more info:
http://f3.grp.yahoofs.com/v1/wP2ERN5XhWLms7lChuzq63Jm4Lag52JrmvgqpGHOoOPIEPR
Np3D-AnqusooTSR48-zr837BdIKoeWR27ce1vF2SdJGKUea4G/Installing%20Wood%20Propel
lers.rtf


David J. Gall

Show quoted text

-----Original Message-----
From: Q-LIST@... [mailto:Q-LIST@...] 
On Behalf Of Ron Weiss
Sent: Sunday, June 04, 2006 10:29 PM
To: Q-LIST@...
Subject: [Q-LIST] Re: prop size?

--- Relax Steve, My attempt at humor wasen't very funny. 
However here's my dilemma. In the last couple of weeks I've 
been trying to get info on the airsoob site. I have a 
Subie-Lyc 2.2. Apparently no one with this set up has logged 
on in the last couple of weeks because all the info I can get 
is that some reduction units don't like 2 bladed wood 
props(harmonic issues). One guy used a Prince and liked the 
performance, but, there was this vibration? He seemed to like 
his Warp Drive, however, it didn't perform as well! Still, I 
didn't get measurements for my motor( diameter, pitch, breast size)? 
I've been to many different propeller websites with the same 
"aren't really sure" answer. Catto even flatly refused and 
sent me to Prince! A@P's seem to twitch when I mention 
Subaru. I don't mind paying for information, but, I can't 
seem to find any. Leon sent me a "prop size sheet" that 
didn't get through. Finley's website won't come up, however, 
I do recall very few specs, mostly set up. I do remember him 
running or ran a Warp Drive. So, if anyone comes across a 
high performance airplane with a Subaru 2.2 in the nose, if 
you could please take a moment and ask him or her....What 
size prop are you running? I'd really appreciate it! Ron

IMG_0222.JPG

Reginald Clarke <airryder@...>

#24252

----------

samle of P51 scoop on Q2

Re: IMG_0222.JPG

Reginald Clarke <airryder@...>

#24250

On 5-Jun-06, at 6:00 PM, Reginald Clarke wrote:


To GROUP

I am responding because I have experience with SUBARU  EA 81 , EJ 2.2 &2.5 and people are asking about these engines.
after about 2 years experimenting and being very frustrated and meany dead stick landings,I have found that the subaru is the best aircraft engine.
It is not the engines fault when it doesn't work ,it is the application.
I found it is easy to cool if you get airflow over radiator in P51 style cooling duct in bottom for air to liquid cooler (radiator).
You need to expand the air volume slowly as it goes to radiator and after its through squeeze it coming out back.
The Radiator cap needs to be at highest location so the air can rise to top system and out. No high spots in coolant lines if posable it may trap air.When air expands it pressurizes coolant system .and releases out top.
If air gets to hot it turns to steam and then you have a steam engine pressure hot spots system can air lock and you have emergency ( dead stick)

I also use P51 style coolant air for oil pan under spinner. This is one of the best locations for high pressure air.
I don't have problem anymore cooling these engines.
I found the EA81 oil runs a little hotter than EJ 's I don't use oil coolers .My oil runs about same as coolant 180 to 210 Fahrenheit

I have weight O-200 basic engine no Accessories stripped clean 225 LBS
i have weight EA-81 Firewall forward including everything prop oil coolant I just finished taking of my DRAGONFLY after flight 214 LBS
I have weight EJ's Firewall forward including everything except prop dry  232 LBS // oil in 240 LBS

These engines are direct drive turbocharged intercooled  54" warp drive three blade
EA81 = 100 HP
EJ 2.5 =150 HP
redrive  power is more

Reg Clarke Q2 subaru
N624JC


<IMG_0222.jpg>
see coolant scoop on bottom Q2 with EJ 2.5

Re: IMG_0222.JPG

Reginald Clarke <airryder@...>

#24251

On 5-Jun-06, at 6:00 PM, Reginald Clarke wrote:


To GROUP

I am responding because I have experience with SUBARU  EA 81 , EJ 2.2 &2.5 and people are asking about these engines.
after about 2 years experimenting and being very frustrated and meany dead stick landings,I have found that the subaru is the best aircraft engine.
It is not the engines fault when it doesn't work ,it is the application.
I found it is easy to cool if you get airflow over radiator in P51 style cooling duct in bottom for air to liquid cooler (radiator).
You need to expand the air volume slowly as it goes to radiator and after its through squeeze it coming out back.
The Radiator cap needs to be at highest location so the air can rise to top system and out. No high spots in coolant lines if posable it may trap air.When air expands it pressurizes coolant system .and releases out top.
If air gets to hot it turns to steam and then you have a steam engine pressure hot spots system can air lock and you have emergency ( dead stick)

I also use P51 style coolant air for oil pan under spinner. This is one of the best locations for high pressure air.
I don't have problem anymore cooling these engines.
I found the EA81 oil runs a little hotter than EJ 's I don't use oil coolers .My oil runs about same as coolant 180 to 210 Fahrenheit

I have weight O-200 basic engine no Accessories stripped clean 225 LBS
i have weight EA-81 Firewall forward including everything prop oil coolant I just finished taking of my DRAGONFLY after flight 214 LBS
I have weight EJ's Firewall forward including everything except prop dry  232 LBS // oil in 240 LBS

These engines are direct drive turbocharged intercooled  54" warp drive three blade
EA81 = 100 HP
EJ 2.5 =150 HP
redrive  power is more

Reg Clarke Q2 subaru
N624JC


<IMG_0222.jpg>
see coolant scoop on bottom Q2 with EJ 2.5

Re: prop size?

Peter Harris <peterjfharris@...>

#24249

Steve the limiting factor will probably be the diameter. The largest diam
will be most efficient. If you decide Warp Drive best to go for the largest
diam. ie 60" for a Q Dragger; ? for the triQ. Then adjust pitch so you get a
satisfactory ground run RPM say 4500rpm.-5000rpm , then go fly. Test and
keep adjusting prop pitch until you get 5500 rpm at WOT level flight.

Note that the CF blades are more easily broken than a wood prop.and more
prone to vibration.

Peter

  _____  

From: Q-LIST@... [mailto:Q-LIST@...] On Behalf Of
Steve Ham
Sent: Monday, 5 June 2006 10:41 PM
To: Q-LIST@...
Subject: RE: [Q-LIST] Re: prop size?

I think Jon Finley  was running a three blade warp drive. You might try to
contact Reg Clarke at Air-Soob. He has a lot of experience with Soob's.
There are some RV 6s running Suburu's. Might try their group. Hope this
helps.

Steve Ham

Show quoted text

-----Original Message-----
From: Q-LIST@... [mailto:Q-LIST@...] On Behalf Of
Ron Weiss
Sent: Monday, June 05, 2006 1:29 AM
To: Q-LIST@...
Subject: [Q-LIST] Re: prop size?



--- Relax Steve, My attempt at humor wasen't very funny. However 
here's my dilemma. In the last couple of weeks I've been trying to 
get info on the airsoob site. I have a Subie-Lyc 2.2. Apparently no 
one with this set up has logged on in the last couple of weeks 
because all the info I can get is that some reduction units don't 
like 2 bladed wood props(harmonic issues). One guy used a Prince and 
liked the performance, but, there was this vibration? He seemed to 
like his Warp Drive, however, it didn't perform as well! Still, I 
didn't get measurements for my motor( diameter, pitch, breast size)? 
I've been to many different propeller websites with the same "aren't 
really sure" answer. Catto even flatly refused and sent me to 
Prince! A@P's seem to twitch when I mention Subaru. I don't mind 
paying for information, but, I can't seem to find any. Leon sent me 
a "prop size sheet" that didn't get through. Finley's website won't 
come up, however, I do recall very few specs, mostly set up. I do 
remember him running or ran a Warp Drive. So, if anyone comes across 
a high performance airplane with a Subaru 2.2 in the nose, if you 
could please take a moment and ask him or her....What size prop are 
you running? I'd really appreciate it! Ron
In Q-LIST@..., "Steve Ham" <sham@...> wrote:

Take a chill pill Ron, the concept of this list is for experienced opinions.
If you need a direct answer, there are other sources. A&Ps, 

IAs, reference books ect..but of course those will cost you.

 

Steve Ham

 

-----Original Message-----
From: Q-LIST@... [mailto:Q-LIST@...] On Behalf Of
Ron Weiss
Sent: Sunday, June 04, 2006 8:05 PM
To: Q-LIST@...
Subject: [Q-LIST] Re: prop size?

 

--I just asked for help with the size. My fears, irrational or not , 
are mine. I would appreciate a direct answer. If you don't have one, 
well, you know what they say about opinions....Ron - In Q-
LIST@..., "JohntenHave" <johntenhave@> wrote:

Ron,

this just does not make a lot of sense.  I know of Quickies that have
crashed. Using this logic, I should not fly one.  Metal and composite
props fail too.  If they failed they were either improperly designed,
improperly built or misused.  You may also wish to  out for yourself
what damage was done to the engine, post failure. Unless you intend to
repeat the mistakes of the past, find out why those failed, remove
that failure mode, get a prop made by a reputable builder and fly 
it
with confidence.

Nervous is fine - it keeps you alive, irrational fear prevents living.

John
Sydney 



--- In Q-LIST@..., "Ron Weiss" <ronweiss4@> wrote:

-Sorry Guy's, Brain Fart! Still, I know of two that have failed. 
Makes me nervous....Ron-- In Q-LIST@..., "Peter Harris" 
<peterjfharris@> wrote:

Ron as I understand your first post you will be running a 2:1 
reduction so
that 5500 engine rpm will correspond to 2750 prop rpm which is 
fine. The
prop will start to lose efficiency above 3500rpm. Running 5500 
prop rpm is
not for happy props.

Peter

 

  _____  

From: Q-LIST@... [mailto:Q-LIST@...] On 
Behalf Of
Ron Weiss
Sent: Saturday, 3 June 2006 2:56 PM
To: Q-LIST@...
Subject: [Q-LIST] Re: prop size?

 

--I'm not comfortable with  a wood prop spinning so quickly on 
a 
165 
hp. at 5500 rpm's. Besides, my two closest quickie buddies both 
through wood props! Both are here to tell their stories, but, 
I'm 
not willing to take that chance....Ron- In Q-
LIST@..., "JohntenHave" <johntenhave@> wrote:

Ron,

I second Peter's comments and unless you have an overpowering
predjudice against natural composites, suggest that you consider 
the
following :

Gyroscopic loads

post propstrike consequences

chances of getting the prop exactly right first try

repairability away from home

ability to fabricate replacements



John 












--- In Q-LIST@..., "Peter Harris" <peterjfharris@> 
wrote:

Ron why no wood props? They seem to be the most used.

Peter 

 

  _____  

From: Q-LIST@... [mailto:Q-LIST@...] On
Behalf Of
Ron Weiss
Sent: Friday, 2 June 2006 5:56 PM
To: Q-LIST@...
Subject: [Q-LIST] Re: prop size?

 

--Thanks Leon,I'll let you know if I need anymore info....Ron- 
In Q-
LIST@..., "Leon - C" <leon@> wrote:

Run the numbers through David Gall's Excel sheet for props.  
I'm 
sure it's posted some where - maybe even on his site.  If 
not 
I 
can 
E-mail a copy.

Assuming 165 mph = 84 inch pitch and 76 inch dia.
==============
Leon
  ----- Original Message ----- 
  From: Ron Weiss 
  To: Q-LIST@... 
  Sent: Thursday, June 01, 2006 8:39 PM
  Subject: [Q-LIST] prop size?


  Does anyone have a suggested size prop I should run on 
a 
Subaru 
EJ 22, 
  165hp. at 5500rpm. 2 to 1 reduction. No pure wood props 
please....Ron






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Re: FW: Annual

Larry Severson

#24253

At 07:39 AM 6/5/2006, you wrote:
Tim or Rich, Larry is looking for an A&P at Chino, maybe you can help,
Larry, I forwarded it to the Dfly list.Thank you.


Larry Severson
Fountain Valley, CA 92708
(714) 968-9852
larry2@...

Re: prop size?

Ron Weiss <ronweiss4@...>

#24248

--- Thanks, RonIn Q-LIST@..., "Steve Ham" <sham@...>
wrote:

I think Jon Finley  was running a three blade warp drive. Youmight try to
contact Reg Clarke at Air-Soob. He has a lot of experience withSoob's.
There are some RV 6s running Suburu's. Might try their group. Hopethis
helps.



Steve Ham



-----Original Message-----
From: Q-LIST@... [mailto:Q-LIST@...] OnBehalf Of
Ron Weiss
Sent: Monday, June 05, 2006 1:29 AM
To: Q-LIST@...
Subject: [Q-LIST] Re: prop size?



--- Relax Steve, My attempt at humor wasen't very funny. However
here's my dilemma. In the last couple of weeks I've been trying to
get info on the airsoob site. I have a Subie-Lyc 2.2. Apparentlyno
one with this set up has logged on in the last couple of weeks
because all the info I can get is that some reduction units don't
like 2 bladed wood props(harmonic issues). One guy used a Princeand
liked the performance, but, there was this vibration? He seemed to
like his Warp Drive, however, it didn't perform as well! Still, I
didn't get measurements for my motor( diameter, pitch, breastsize)?
I've been to many different propeller websites with thesame "aren't
really sure" answer. Catto even flatly refused and sent me to
Prince! A@P's seem to twitch when I mention Subaru. I don't mind
paying for information, but, I can't seem to find any. Leon sentme
a "prop size sheet" that didn't get through. Finley's websitewon't
come up, however, I do recall very few specs, mostly set up. I do
remember him running or ran a Warp Drive. So, if anyone comesacross
a high performance airplane with a Subaru 2.2 in the nose, if you
could please take a moment and ask him or her....What size propare
you running? I'd really appreciate it! Ron
In Q-LIST@..., "Steve Ham" <sham@> wrote:

Take a chill pill Ron, the concept of this list is forexperienced
opinions.
If you need a direct answer, there are other sources. A&Ps,

IAs, reference books ect..but of course those will cost you.



Steve Ham



-----Original Message-----
From: Q-LIST@... [mailto:Q-LIST@...] OnBehalf Of
Ron Weiss
Sent: Sunday, June 04, 2006 8:05 PM
To: Q-LIST@...
Subject: [Q-LIST] Re: prop size?



--I just asked for help with the size. My fears, irrational ornot ,
are mine. I would appreciate a direct answer. If you don't haveone,
well, you know what they say about opinions....Ron - In Q-
LIST@..., "JohntenHave" <johntenhave@> wrote:

Ron,

this just does not make a lot of sense.  I know of Quickiesthat
have
crashed. Using this logic, I should not fly one.  Metal andcomposite
props fail too.  If they failed they were either improperlydesigned,
improperly built or misused.  You may also wish to  out foryourself
what damage was done to the engine, post failure. Unless youintend to
repeat the mistakes of the past, find out why those failed,remove
that failure mode, get a prop made by a reputable builder andfly
it
with confidence.

Nervous is fine - it keeps you alive, irrational fear preventsliving.

John
Sydney



--- In Q-LIST@..., "Ron Weiss" <ronweiss4@> wrote:

-Sorry Guy's, Brain Fart! Still, I know of two that havefailed.
Makes me nervous....Ron-- In Q-LIST@..., "PeterHarris"
<peterjfharris@> wrote:

Ron as I understand your first post you will be running a2:1
reduction so
that 5500 engine rpm will correspond to 2750 prop rpmwhich
is
fine. The
prop will start to lose efficiency above 3500rpm. Running5500
prop rpm is
not for happy props.

Peter



  _____

From: Q-LIST@... [mailto:Q-LIST@...]
On
Behalf Of
Ron Weiss
Sent: Saturday, 3 June 2006 2:56 PM
To: Q-LIST@...
Subject: [Q-LIST] Re: prop size?



--I'm not comfortable with  a wood prop spinning soquickly
on
a
165
hp. at 5500 rpm's. Besides, my two closest quickie buddiesboth
through wood props! Both are here to tell their stories,but,
I'm
not willing to take that chance....Ron- In Q-
LIST@..., "JohntenHave" <johntenhave@> wrote:

Ron,

I second Peter's comments and unless you have anoverpowering
predjudice against natural composites, suggest that youconsider
the
following :

Gyroscopic loads

post propstrike consequences

chances of getting the prop exactly right first try

repairability away from home

ability to fabricate replacements



John












--- In Q-LIST@..., "Peter Harris"<peterjfharris@>
wrote:

Ron why no wood props? They seem to be the most used.

Peter



  _____

From: Q-LIST@... [mailto:Q-LIST@...] On
Behalf Of
Ron Weiss
Sent: Friday, 2 June 2006 5:56 PM
To: Q-LIST@...
Subject: [Q-LIST] Re: prop size?



--Thanks Leon,I'll let you know if I need anymoreinfo....Ron-
In Q-
LIST@..., "Leon - C" <leon@> wrote:

Run the numbers through David Gall's Excel sheet forprops.
I'm
sure it's posted some where - maybe even on his site.If
not
I
can
E-mail a copy.

Assuming 165 mph = 84 inch pitch and 76 inch dia.
==============
Leon
  ----- Original Message -----
  From: Ron Weiss
  To: Q-LIST@...
  Sent: Thursday, June 01, 2006 8:39 PM
  Subject: [Q-LIST] prop size?


  Does anyone have a suggested size prop I shouldrun
on
a
Subaru
EJ 22,
  165hp. at 5500rpm. 2 to 1 reduction. No pure woodprops
please....Ron






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Re: Spring Fling 06

jeffs912ex@...

#24247

Thanks Keith, 
Did a great job. The burgers were excellent.  Good choice  for airports, felt 
welcomed by all. First time I saw a Q-1 perform, very  cool! Nice looking 
machine too.
 
Jeff Sell

Q2 Priced reduced

Doug Humble <hawkidoug@...>

#24245

http://quickiebuilders.org/forsale.html

Bob Hazen has dropped the price of his father's Q2.  Go to the above link to check it out.

Doug "Hawkeye" Humble
www.asignabove.net
Omaha NE
N25974