Today's Message Index:
----------------------
1. 02:50 AM - Re: fuel feed (Bruce Campbell)
2. 07:33 AM - Re: What did you do today (Dee Grimm)
3. 09:01 AM - Re: What did you do today (Gus Fraser)
4. 10:19 AM - Re: Yak-List Digest: 26 Msgs - 12/16/03 (Jerry Painter)
5. 10:36 AM - Re: What did you do today (Bob Fitzpatrick)
6. 03:07 PM - Re: Yak-List Digest: 26 Msgs - 12/16/03 (Steve Dalton)
7. 03:44 PM - Yak 52TW Louvers are GREAT...Sorry Jerry Painter , updated response!!! (Mark Schrick)
8. 06:33 PM - Booster Coil (Jim Griffin)
9. 07:36 PM - Re: What did you do today (YakL1@aol.com)
10. 07:49 PM - Re: What did you do today (A. Dennis Savarese)
11. 09:58 PM - Re: Yak-List Digest: 22 Msgs - 12/17/03 (Jerry Painter)
Message 1
| INDEX | Back to Main INDEX |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
--> Yak-List message posted by: "Bruce Campbell" <baruch@intelligentflight.com>
I'm pretty sure the problem is the vent line (after the "T") for one of the
fuel tanks. Should check it soon, as a clogged vent can cause the tank to
crack (mine did and needed welding). In my case it appeared to be
mud-daubers making a home for themselves, but it could be a kink in the line
or some other kind of Gunk.
Bruce Campbell
----- Original Message -----
From: "Brian Lloyd" <brian@lloyd.com>
Subject: Re: Yak-List: fuel feed
> --> Yak-List message posted by: Brian Lloyd <brian@lloyd.com>
>
> Doug Sapp wrote:
>
> > --> Yak-List message posted by: "Doug Sapp" <rvfltd@televar.com>
> >
> > Greg,
> > I have considered pressurizing the tanks, but have not liked the idea,
> > cosmetically it just adds more stuff poking out of the aircraft. In the
> > 70's we built many high performance Cubs for the Alaska market, the most
> > popular one was the Piper PA12 Super Cruiser with the 150 hp conversion.
> > That mod required that the tanks be pressurized to guarantee full flow
at
> > max RPM. We simply added a forward facing "vent" line and it solved the
> > problem instantly. The same could be done with the CJ caps and I do
agree
> > that it would most likely solve the dissimilar fuel feed problem also.
But
> > you would have to be willing to put up with the tube jutting out of each
> > cap, pointing forward into the positive air. Then you would have to
> > overcome the problem of the fuel tank cover, it would have to have a
hole in
> > it also. all doable but a bit clumsy in my opinion.
>
> The tanks in the CJ6A are already "pressurized" by the vent system. There
is a single common vent for both tanks on the belly of the aircraft under
the wing. This is a high-pressure point on the airframe and serves the same
purpose as caps on the top of the wing with a forward-facing vent.
>
> Remember, a cap on the top of the wing is already at a low pressure point
on the airframe. A forward facing "pitot tube" vent is therefore needed to
increase the pressure above ambient. With the vent on the bottom of the
wing/fuselage you are referencing your vent to a higher-than-ambient
pressure thus pressurizing your tanks.
>
> --
>
> Brian Lloyd 6501 Red Hook Plaza, Suite 201
> brian@lloyd.com St. Thomas, VI 00802
> +1.340.998.9447 - voice +1.360.838.9669 - fax
> GMT-4
>
>
Message 2
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: What did you do today |
--> Yak-List message posted by: "Dee Grimm" <deegrimm@cox.net>
The 17th at DVT (Deer Valley Airport, Phoenix) Dee Grimm lead a three ship
"missing man" formation to honor the Wright Brothers. It took place at
0830MST which should approximate the actual 100 year timeline. The
participants were
Dee-lead
Greg Medford-missing man
Rich Tichacek-three
Jim Shafer was to participate but at the last minute he had a maintenance
problem and had to cancel.
The day was concluded with a "toast to the Wright Brothers" at Dee's hangar
from 1600-1800. There were over 50 people in attendance. A nice tribute to
the brothers who changed the world.
I hope each of you marked the day in some way.
Regards, Dee
Message 3
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | What did you do today |
--> Yak-List message posted by: "Gus Fraser" <fraseg@comcast.net>
Excellent
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com]On Behalf Of Dee Grimm
Subject: Re: Yak-List: What did you do today
--> Yak-List message posted by: "Dee Grimm" <deegrimm@cox.net>
The 17th at DVT (Deer Valley Airport, Phoenix) Dee Grimm lead a three ship
"missing man" formation to honor the Wright Brothers. It took place at
0830MST which should approximate the actual 100 year timeline. The
participants were
Dee-lead
Greg Medford-missing man
Rich Tichacek-three
Jim Shafer was to participate but at the last minute he had a maintenance
problem and had to cancel.
The day was concluded with a "toast to the Wright Brothers" at Dee's hangar
from 1600-1800. There were over 50 people in attendance. A nice tribute to
the brothers who changed the world.
I hope each of you marked the day in some way.
Regards, Dee
Message 4
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | RE: Yak-List Digest: 26 Msgs - 12/16/03 |
--> Yak-List message posted by: "Jerry Painter" <wild.blue@verizon.net>
And as a bonus, with proper shape you get forward thrust in addition to
reduced drag. Don't let your cowling come loose or it will eat your prop.
Jerry Painter
If you do a proper plenum design, you slow the cooling air (high volume, low
velocity) before it reaches the baffling and the cylinders. This optimizes
heat transfer and keeps the drag as low as possible at that point. After
the cylinders you want to have a smooth constriction so that the cooling air
accelerates again until it is traveling as near to the TAS of the aircraft
as possible so that it can reenter the slipstream without causing too much
turbulence. The angle and the velocity of the cooling air are critical at
this point. This is what causes most of the drag from cooling airflow.
--
Brian Lloyd 6501 Red Hook Plaza, Suite 201
brian@lloyd.com St. Thomas, VI 00802
+1.340.998.9447 - voice +1.360.838.9669 - fax
GMT-4
Message 5
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: What did you do today |
--> Yak-List message posted by: Bob Fitzpatrick <rmfitz@direcway.com>
There is a group of pilots in the Chicago area known as the Sunday Morning
Breakfast Club. The plan was to circle the city and end up at Schaumberg
airport. Dispite being a work day, 1500' overcast and limited vis in
scattered snow, 21 planes turned out and over 40 of us had lunch at Pilot
Pete's restaurant.
When approaching Palwaukee the lead plane told the tower that the group
would be passing around the field to the North .Tower cleared the whole
group right over the field and even invited low passes. The 2 that went down
(way down) reported smiles and waves from the tower as they passed.
It was the Wright thing to do.
bob
----- Original Message -----
From: "Gus Fraser" <fraseg@comcast.net>
Subject: Yak-List: What did you do today
> --> Yak-List message posted by: "Gus Fraser" <fraseg@comcast.net>
>
>
> Folks weather here was crud but managed a "fast taxi test" today. Did feel
> the wheels get a little light :)))
>
> Happy 17th
>
> Gus
>
>
Message 6
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | RE: Yak-List Digest: 26 Msgs - 12/16/03 |
--> Yak-List message posted by: "Steve Dalton" <sdalton@goeaston.net>
--> Yak-List message posted by: "Jerry Painter" <wild.blue@verizon.net>
<<The "Venetian blind" arrangement on the 52TW cowling outlet is a
complete
bust. Flat doesn't work. The object was to open up the front of the
cowling
so you could see the engine, but the solution isn't a solution at all.
The
linkage isn't strong enough for the loads, so the flap really isn't
adjustable in flight and can't be closed at cruise. No temp control.
Their
"solution" for that problem was to install a rubber seal around the
cowling
periphery to try to keep temps UP, making it *impossible* to remove or
reinstall the cowling. Even then the cowling leaks so bad temps are too
low, even in summer (i.e., Seattle *summer*). Would stronger linkage
fix
it? Who cares--it's a dumb design and probably contributes to the TW's
ridiculously low cruise speed.>>
George and Cliff Coy build stronger linkages for my TW. It was the
first one, so "experimentation" was the name of the game. They work
great!
The rubber seal at the back of the cowl does NOT inhibit cowl removal at
all. I can remove the entire cowl, by myself, in minutes. Perhaps
yours needs to be trimmed/adjusted?
In Maryland I fly in temps from 32F to 100F. Both CHT and oil run in
the green. I will say that the oil cooler needs to be a little larger.
A long idle on the ground in summer gets the oil to the max allowable
temp (just like many other warbirds).
As to the " ridiculously low cruise speed", why would anyone expect it
be much faster than a regular -52? Compared to the big three blade MT
prop and the wing's profile (both designed for aerobatics, NOT speed),
the difference in drag between a -52 cowl and a TW cowl is
insignificant. My experience is that the TW cruises about 10kts faster
than a -52W. IMHO, about what to expect with a little less drag due to
the difference in gear retraction.
To each his own, but I LOVE my TW.
Steve Dalton
N52SD
Message 7
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Yak 52TW Louvers are GREAT...Sorry Jerry Painter , updated response!!! |
--> Yak-List message posted by: "Mark Schrick" <schrick@pacbell.net>
Jerry,
Sorry you feel the Yak 52TW louvers are not to your liking. After 37 Yak
52TW delivered in the USA, you are the first to gripe about the design. I
have flown the TW in PHZ (which by the way is warmer than wet Seattle) and
temps were in the upper green as were the two other Yak 52's I was flying
with (two systems, same readings). Cold tempitures are better commented by
Steve Dalton (Maryland).
Steve Dalton is correct, He has s/n #1 and the design has evolved in the
past 2 1/2 years. I am bring in a Yak 50 and will incorporate the TW louvers
into my Y50 due to the improved design.
Possibly if you see the improved design you would see the design has come a
long way.
We can send you pictures if you wish to see the improvement. The engines
look nice this way also. Isn't that how T-28, P-47's, and Stearmans keep
their temps regulated? Seems like there are a few of them flying today with
no issues to regulate engine oil temps.
Something to think about. Just want to present more updated response to a
very old problem.
Mark
Yak 52/50 owner
--> Yak-List message posted by: "Steve Dalton" <sdalton@goeaston.net>
--> Yak-List message posted by: "Jerry Painter" <wild.blue@verizon.net>
<<The "Venetian blind" arrangement on the 52TW cowling outlet is a
complete
bust. Flat doesn't work. The object was to open up the front of the
cowling
so you could see the engine, but the solution isn't a solution at all.
The
linkage isn't strong enough for the loads, so the flap really isn't
adjustable in flight and can't be closed at cruise. No temp control.
Their
"solution" for that problem was to install a rubber seal around the
cowling
periphery to try to keep temps UP, making it *impossible* to remove or
reinstall the cowling. Even then the cowling leaks so bad temps are too
low, even in summer (i.e., Seattle *summer*). Would stronger linkage
fix
it? Who cares--it's a dumb design and probably contributes to the TW's
ridiculously low cruise speed.>>
George and Cliff Coy build stronger linkages for my TW. It was the
first one, so "experimentation" was the name of the game. They work
great!
The rubber seal at the back of the cowl does NOT inhibit cowl removal at
all. I can remove the entire cowl, by myself, in minutes. Perhaps
yours needs to be trimmed/adjusted?
In Maryland I fly in temps from 32F to 100F. Both CHT and oil run in
the green. I will say that the oil cooler needs to be a little larger.
A long idle on the ground in summer gets the oil to the max allowable
temp (just like many other warbirds).
As to the " ridiculously low cruise speed", why would anyone expect it
be much faster than a regular -52? Compared to the big three blade MT
prop and the wing's profile (both designed for aerobatics, NOT speed),
the difference in drag between a -52 cowl and a TW cowl is
insignificant. My experience is that the TW cruises about 10kts faster
than a -52W. IMHO, about what to expect with a little less drag due to
the difference in gear retraction.
To each his own, but I LOVE my TW.
Steve Dalton
N52SD
Message 8
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
--> Yak-List message posted by: "Jim Griffin" <jgriffint28@cox.net>
Anyone know what the point gap setting is on the booster coil in a CJ6?
Jim Griffin
Message 9
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: What did you do today |
--> Yak-List message posted by: YakL1@aol.com
The Deer Valley and Palwalkee flights sound great. I managed to get the CJ
into the air before work. A short, beautiful flight in wonderful cool weather.
Said thanks to Wilber and Orville and Charles, Jimmy, Scott, Neill et al.
A nostrum currently circulating on the web reminds us that it is the duty of
all aviators to fulfill the aspirations of the uncountable generations of our
human ancestors who could only look skyward and dream...
John Zecherle
Message 10
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: What did you do today |
--> Yak-List message posted by: "A. Dennis Savarese" <adsavar@gte.net>
During our flight yesterday over beautiful central Alabama including the
capital city of Montgomery and the surrounding towns of Tallassee, Wetumpka,
Elmore, Coosada, Prattville and Millbrook I recited this famous statement by
Leonardo DiVinci,
"When once you have tasted flight, you will forever walk the earth with your
eyes turned skyward, for there you have been, and there you will always long
to return."
Dennis
----- Original Message -----
From: <YakL1@aol.com>
Subject: Re: Yak-List: What did you do today
> --> Yak-List message posted by: YakL1@aol.com
>
> The Deer Valley and Palwalkee flights sound great. I managed to get the
CJ
> into the air before work. A short, beautiful flight in wonderful cool
weather.
> Said thanks to Wilber and Orville and Charles, Jimmy, Scott, Neill et al.
>
> A nostrum currently circulating on the web reminds us that it is the duty
of
> all aviators to fulfill the aspirations of the uncountable generations of
our
> human ancestors who could only look skyward and dream...
>
> John Zecherle
>
>
Message 11
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | RE: Yak-List Digest: 22 Msgs - 12/17/03 |
--> Yak-List message posted by: "Jerry Painter" <wild.blue@verizon.net>
I suppose almost of us have flown Cessnas with a "both" fuel selector and
have noted that the fuel doesn't feed evenly from the tanks on them, either.
My experience with CJ's and -52's is the same as with Cessnas: Keep the
ball in the center and the fuel feeds evenly. Easy to say, hard to do.
When you notice a little differential feed just roll the ball a bit away
from the "high" tank ("step on the tank") and in a while they'll equalize.
I get cramps strapped in and sitting on a cast iron 'chute all day (even
with a pad), so I put my feet up on top of the rudder bar and just hold a
little light aileron (maybe five degrees of bank max) away from the high
tank and just enough rudder to hold heading. Easy to do on a long x-c
cruise, not so easy when out rearranging the horizon. I imagine that's what
most everyone else does, too. If that doesn't work you probably have
something that needs attention.
Jerry Painter
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|