Today's Message Index:
----------------------
1. 03:16 AM - Re: Lightning bottom cowl air dam photos (Malcolm Ferguson)
2. 05:09 AM - Re: Gear Leg Shimmy (John Davis)
3. 08:51 AM - Re: Gear Leg Shimmy (N1BZRich@aol.com)
4. 04:00 PM - Spar Box (Colin J. Kennedy)
5. 04:31 PM - Builders: Spar box cont. (Colin J. Kennedy)
6. 05:31 PM - Re: Lightning bottom cowl air dam photos (Dave)
7. 05:39 PM - Re: Builders: Spar box cont. (Jim Langley)
8. 05:40 PM - Builder's links (Jim Langley)
9. 07:34 PM - Re: Builders: Spar box cont. (Colin J. Kennedy)
10. 10:58 PM - FW: Lightning bottom cowl air dam photos (James, Clive R)
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 |
|
| Subject: | Lightning bottom cowl air dam photos |
Brian,
Have a look at the following Gilles Thesee's website
http://contrails.free.fr/engine_aerodyn_radia_en.php
http://contrails.free.fr/tunnel_en.php He is very approachable.
He has a wealth of info and references on cooling drag, some of it you have
to use babelfish to get a half descent translation from French to English.
He was concerned with airflow through a radiator but in essence an
air-cooled engine is still a radiator. Your famed P51 Mustang was near the
pinnacle for cooling drag reduction. The radiator hanging under the belly
has very little drag due to excellent pressure recovery-good flow into the
radiator with forward thrust and minimal turbulence and the reintroduction
of the heated air back into the aircraft slipstream at near slipstream
velocity. It actually gains energy due to heating.
Expecting cooling air to leave the engine bay and make an abrupt 90 degree
turn at the bottom of the firewall is very inefficient and has little
pressure recovery. Have a look under the firewall bottom of a Lancair
Legacy and you will see that there a 2 gently curving ducts above the
exhaust pipes that squeeze up the airflow and get the velocity back up
before the heated air enters the slipstream. i.e. pressure recovery. There
is a cost, you loose some foot well room.
Regards,
Malcolm Ferguson
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 |
|
Linda
Did you have that much slop between the axle and the wheel? Welding Steel
to aluminum is tricky Good Look.
John
_____
From: owner-lightning-list-server@matronics.com
[mailto:owner-lightning-list-server@matronics.com] On Behalf Of JOSEPH
MATHIAS LINDA MATHIAS
Sent: Saturday, February 23, 2008 6:00 PM
Subject: Re: Lightning-List: Gear Leg Shimmy
Report on experiment # 2:
Today we removed the wheels and axles from the Lightning; wrapped some
shim material (beer can aluminum fits almost perfectly) around the axle and
reinstalled the wheels. I then performed taxi tests; taxiing up to 33 kts
ground speed, there was little to no shimmy. Ceiling never raised above
pattern altitude all day so taxi was the only possibility. The slight
roughness I felt at the highest speeds was probably the runway surface. I
want to fly it a couple of times before I remove the aluminum angle Buz put
on the gear then see if that makes any difference. However, between the
upgraded tires and the axle shimming, we have greatly improved the
situation. Assuming this continues to offer improvement, we will probably
remove the shim material when it wears down and weld the axle into the
socket to avoid having to periodically replace the shim material.
Regards, Linda
----- Original Message -----
From: JOSEPH <mailto:lbmathias@verizon.net> MATHIAS LINDA MATHIAS
Sent: Saturday, February 16, 2008 6:31 PM
Subject: Lightning-List: Gear Leg Shimmy
Well folks, we changed the tires on the main wheels today to Goodyear
Flight Custom IIIs; one of the original tires definitely was out of round
and quite obvious while spinning it on the axle during removal. The new
tires improved the shimmy a bit but it hasn't gone away. However, we have a
new theory: during the tire changing, we noticed that the axle is quite
loose on both main gear. The next idea is to put some shim stock around
the axle to tighten its fit in the socket. Has anyone else noticed that
the axle doesn't fit tightly?
I'll post the results when we get the axle tightened.
Linda Mathias
_____
<http://promos.hotbar.com/promos/promodll.dll?RunPromo&El=&SG=&RAND=36630&pa
rtner=spamblockerutility> Upgrade Your Email - Click here!
href="http://www.matronics.com/Navigator?Lightning-List">http://www.matronic
s.com/Navigator?Lightning-List
href="http://forums.matronics.com">http://forums.matronics.com
href="http://www.matronics.com/contribution">http://www.matronics.com/c
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: | Re: Gear Leg Shimmy |
In a message dated 2/24/2008 8:11:23 A.M. Eastern Standard Time,
johnsdtn40@charter.net writes:
Welding Steel to aluminum is tricky
John,
Linda is not talking about welding steel to aluminum. She is talking
about welding the "steel" axle which fits inside the "steel" lower gear leg
assembly, which then bolts onto the aluminum gear leg. On the original set up
the axle bolts to the lower gear leg assembly (on the inside or toward the
aircraft centerline) and may eventually ends up with a slightly loose fit. I
put three small spot welds on the inside (toward the aircraft centerline) where
the axle comes through the lower gear leg assembly. I noticed that the axle
was slightly loose inside the lower gear leg assemble at about the 350 hour
point and the spot welds took care of that. If I ever need to replace an
axle for any reason the spot welds can be ground off to remove the old axle.
Blue Skies,
Buz
**************Ideas to please picky eaters. Watch video on AOL Living.
(http://living.aol.com/video/how-to-please-your-picky-eater/rachel-campos-duffy/
2050827?NCID=aolcmp00300000002598)
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 |
|
I am fitting my spar box.
I found that rather than use AN5-10A bolts on the lower spar box holes
and
AN5-7A bolts on the upper ones, I had to use AN5-7A bolts on all of
them.
The AN5-10A protruded through the fuselage so far that the nut bottomed
out
on the bolt shank. The AN5-7A bolts were long enough, but not too long.
I used AN365-524A nuts on these bolts. The latest version of the manual
says
5/16 nyloc nuts, but does not say whether to use AN354-524A or
AN365-524A.
An earlier version specifies AN365-524A.
John E., another builder, advised me to put the forward rudder cables in
the
guides on the spar box before bolting the spar box in place. This
appears to
have been good advice because once my rear spar box half was bolted in
place, there was no clearance between the guides and the floor to allow
the
cables to be slipped into the guides.
Next: Wing alignment!
Colin K.
OK
Lightning # 52 under construction.
http://www.mykitlog.com/cojaken
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: | Builders: Spar box cont. |
After installing the spar box, I noticed that in section 24. Master
Cylinder
Installation, it says:
22. In the bottom of the rear spar box measure forward from the main
gear
leg socket 5/8", and in line with the socket. You should measure from
the
edge of the hole not the weld.
23. Drill a 1/2" hole here. Start with smaller bit and work you way up,
this
will be more accurate.
I would have preferred to do this before I fitted the spar box, but now
I
will do it in place. Access may be a liitle difficult but I think a
drill
extension may be the solution.
Colin K.
OK
Lightning # 52 under construction.
http://www.mykitlog.com/cojaken
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: Lightning bottom cowl air dam photos |
Guys
I have on my Esqual a 2 inch deflector and have been running with it for
over a year. I never have heating problems even while taxing. Have
sent out photos of it to others who are also using it.
Dave McC
----- Original Message -----
From: Daniel DW
To: lightning-list@matronics.com
Sent: Friday, February 22, 2008 3:01 AM
Subject: RE: Lightning-List: Lightning bottom cowl air dam photos
Clive,
we could add a lip on our cowling, made in alu.
Danny
-------------------------------------------------------------------------
-----
> Subject: FW: Lightning-List: Lightning bottom cowl air dam photos
> Date: Fri, 22 Feb 2008 06:55:55 +0000
> From: clive.james@uk.bp.com
> To: lightning-list@matronics.com
>
> Apologies I should have carried on reading the next few posts.
Though my
> comments still apply.
>
> Looking at the pictures of the Lightning ducts and my Esquals the
size
> difference is massive.
>
> Worth some 'liquid engineering' if there's space.
>
> Regards, Clive
>
> -----Original Message-----
> From: owner-lightning-list-server@matronics.com
> [mailto:owner-lightning-list-server@matronics.com] On Behalf Of
> N1BZRich@aol.com
> Sent: 21 February 2008 22:07
> To: lightning-list@matronics.com
> Subject: Lightning-List: Lightning bottom cowl air dam photos
>
> Danny,
> Right after I sent the previous message I remembered where you could
> see the lip on the Lightning's bottom cowl. Go to the Lightning news
> web page http://www.arionaircraft.com/News.html, and scroll down to
near
> the bottom and look at the photos for 1/5/2006, Lightning Cowl
> Finalized, and also 2/15/2005, Wheel and gear fairings set for
trial.
> Both of these set of photos show the lip or air dam. The idea is the
> same as on a car. The air dam forces air down and thus creates a
lower
> pressure area under the bottom cowl. Hope this helps.
> Buz
>
>
>
> ________________________________
>
> Delicious ideas to please the pickiest eaters. Watch the video on
AOL
> Living.
>
<http://living.aol.com/video/how-to-please-your-picky-eater/rachel-campo
> s-duffy/2050827?NCID=aolcmp00300000002598>
-------------------------------------------------------------------------
-----
Neem je vrienden overal mee dankzij Messenger op je gsm. Messenger
voor Mobile
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: | Builders: Spar box cont. |
Way to keep things going Colin! Keep it up!
I hope you don't mind that I put a link to your KitLog site under
http://www.jimslightning.com/html/cool_links.html
I am trying to fill that page with builder information as I go.
Jim!
_____
From: owner-lightning-list-server@matronics.com
[mailto:owner-lightning-list-server@matronics.com] On Behalf Of Colin J.
Kennedy
Sent: Sunday, February 24, 2008 7:28 PM
Subject: Lightning-List: Builders: Spar box cont.
After installing the spar box, I noticed that in section 24. Master Cylinder
Installation, it says:
22. In the bottom of the rear spar box measure forward from the main gear
leg socket 5/8", and in line with the socket. You should measure from the
edge of the hole not the weld.
23. Drill a 1/2" hole here. Start with smaller bit and work you way up, this
will be more accurate.
I would have preferred to do this before I fitted the spar box, but now I
will do it in place. Access may be a liitle difficult but I think a drill
extension may be the solution.
Colin K.
OK
Lightning # 52 under construction.
<http://www.mykitlog.com/cojaken> http://www.mykitlog.com/cojaken
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 |
|
If any of you have a web presence with a builder site, I would love to post
it in my Lightning Builders link section on my web site. Send me your web
link and information and I will post it for you.
Also, keep it up with the Frapper map. It is filling up nicely!
Jim!
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: | Builders: Spar box cont. |
That's fine Jim. I'm looking forward to your first flight!
Colin K.
OK
Lightning # 52 under construction.
http://www.mykitlog.com/cojaken
-----Original Message-----
From: owner-lightning-list-server@matronics.com
[mailto:owner-lightning-list-server@matronics.com] On Behalf Of Jim
Langley
Sent: Sunday, February 24, 2008 7:37 PM
Subject: RE: Lightning-List: Builders: Spar box cont.
Way to keep things going Colin! Keep it up!
I hope you don't mind that I put a link to your KitLog site under
http://www.jimslightning.com/html/cool_links.html
I am trying to fill that page with builder information as I go.
Jim!
_____
From: owner-lightning-list-server@matronics.com
[mailto:owner-lightning-list-server@matronics.com] On Behalf Of Colin J.
Kennedy
Sent: Sunday, February 24, 2008 7:28 PM
Subject: Lightning-List: Builders: Spar box cont.
After installing the spar box, I noticed that in section 24. Master
Cylinder
Installation, it says:
22. In the bottom of the rear spar box measure forward from the main
gear
leg socket 5/8", and in line with the socket. You should measure from
the
edge of the hole not the weld.
23. Drill a 1/2" hole here. Start with smaller bit and work you way up,
this
will be more accurate.
I would have preferred to do this before I fitted the spar box, but now
I
will do it in place. Access may be a liitle difficult but I think a
drill
extension may be the solution.
Colin K.
OK
Lightning # 52 under construction.
<http://www.mykitlog.com/cojaken> http://www.mykitlog.com/cojaken
http://www.matronics.com/Navigator?Lightning-List
http://forums.matronics.com
http://www.matronics.com/contribution
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: | Lightning bottom cowl air dam photos |
Nice simple addition which I will have fitted before first flight,
Thanks Dave, Regards, Clive
________________________________
From: owner-lightning-list-server@matronics.com
[mailto:owner-lightning-list-server@matronics.com] On Behalf Of Dave
Sent: 25 February 2008 01:29
Subject: Re: Lightning-List: Lightning bottom cowl air dam photos
Guys
I have on my Esqual a 2 inch deflector and have been running with it for
over a year. I never have heating problems even while taxing. Have
sent out photos of it to others who are also using it.
Dave McC
----- Original Message -----
From: Daniel DW <mailto:ddw55@hotmail.com>
To: lightning-list@matronics.com
Sent: Friday, February 22, 2008 3:01 AM
Subject: RE: Lightning-List: Lightning bottom cowl air dam
photos
Clive,
we could add a lip on our cowling, made in alu.
Danny
________________________________
> Subject: FW: Lightning-List: Lightning bottom cowl air dam
photos
> Date: Fri, 22 Feb 2008 06:55:55 +0000
> From: clive.james@uk.bp.com
> To: lightning-list@matronics.com
>
> Apologies I should have carried on reading the next few posts.
Though my
> comments still apply.
>
> Looking at the pictures of the Lightning ducts and my Esquals
the size
> difference is massive.
>
> Worth some 'liquid engineering' if there's space.
>
> Regards, Clive
>
> -----Original Message-----
> From: owner-lightning-list-server@matronics.com
> [mailto:owner-lightning-list-server@matronics.com] On Behalf
Of
> N1BZRich@aol.com
> Sent: 21 February 2008 22:07
> To: lightning-list@matronics.com
> Subject: Lightning-List: Lightning bottom cowl air dam photos
>
> Danny,
> Right after I sent the previous message I remembered where you
could
> see the lip on the Lightning's bottom cowl. Go to the
Lightning news
> web page http://www.arionaircraft.com/News.html, and scroll
down to near
> the bottom and look at the photos for 1/5/2006, Lightning Cowl
> Finalized, and also 2/15/2005, Wheel and gear fairings set for
trial.
> Both of these set of photos show the lip or air dam. The idea
is the
> same as on a car. The air dam forces air down and thus creates
a lower
> pressure area under the bottom cowl. Hope this helps.
> Buz
>
>
>
> ________________________________
>
> Delicious ideas to please the pickiest eaters. Watch the video
on AOL
> Living.
>
<http://living.aol.com/video/how-to-please-your-picky-eater/rachel-campo
> s-duffy/2050827?NCID=aolcmp00300000002598>
________________________________
Neem je vrienden overal mee dankzij Messenger op je gsm.
Messenger voor Mobile <http://www.windowslivemobile.msn.com/nl-be>
href="http://www.matronics.com/Navigator?Lightning-List">http://www.mat
r
onics.com/Navigator?Lightning-List
href="http://forums.matronics.com">http://forums.matronics.com
href="http://www.matronics.com/contribution">http://www.matronics.com/c
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! --
|