YELLOW AT-6 TEXAN BUILD THREAD
05-30-2008, 06:13 AM
#276
RE: YELLOW AT-6 TEXAN BUILD THREAD
Some of the warbirds at last night's club meeting.
H-9 and TF B-25's, KMP P-38, 10' WS B-17.
Videos:
H9 B-25 taking off:
http://www.rcuvideos.com/item/RP05LVNJ3MZ8FPJ9
KMP P-38 fly by:
http://www.rcuvideos.com/item/RY38CSPPHMNS4RPD
H-9 and TF B-25's, KMP P-38, 10' WS B-17.
Videos:
H9 B-25 taking off:
http://www.rcuvideos.com/item/RP05LVNJ3MZ8FPJ9
KMP P-38 fly by:
http://www.rcuvideos.com/item/RY38CSPPHMNS4RPD
06-01-2008, 08:08 PM
#277
RE: YELLOW AT-6 TEXAN BUILD THREAD
AT the field.
pic 1:
I tested diesel fuel and kerosene (separately) in my Balsa USA 1/3 Nieuport (on the ground test only: too windy and cross wind for WW I).
I've been using smoke oil and thought I'd try some alternatives.
To me the diesel and kerosene, individually tested, appeared to me to produce the same amount of smoke as the smoke oil.
(My buddy thought the diesel produced more white smoke than the kerosene.)
I only ran a few ounces so I don't know if there's any more residue on the plane than what's produced with smoke oil.
The diesel fuel is green but it still produced white smoke.
The kerosene is crystal clear like the smoke oil.
Their flash points seem to be about the same as the smoke oil.
Nothing scientific but these are my crude observations.
pic 2:
I took the Yellow AT-6 Texan out to maiden but the engine would not stay running and would only burn the fuel pumped into the carb.
I took it home and took the carb apart: took both needle valves out, cleaned out some 'junk' in the screen, air blew out all the orifices and fixed what looked like a backwards installed gasket (opposite side of the diaphram).
All seems to be working now.
I'm getting around 1900 RPM's on idle and around 5800 RPM's full throttle on a Zinger 24X10 prop.
3W said 5500-6100 is ideal.
I started the 'H' and 'L' end at one turn out and had to lean the 'H' end to get from 5100 to 5800 RPM's.
The needles only needed a very minor adjustment to get dramatic changes.
I'm glad that I tested the engine on the ground: the fuel line touched the muffler and was fused shut.
I routed the line over the top of the crankcase plus put a tough plastic sheathing over it.
Here's a video of the engine running after adjustments:
http://www.rcuvideos.com/item/9BJXKQ2YC0PLGK09
pic 1:
I tested diesel fuel and kerosene (separately) in my Balsa USA 1/3 Nieuport (on the ground test only: too windy and cross wind for WW I).
I've been using smoke oil and thought I'd try some alternatives.
To me the diesel and kerosene, individually tested, appeared to me to produce the same amount of smoke as the smoke oil.
(My buddy thought the diesel produced more white smoke than the kerosene.)
I only ran a few ounces so I don't know if there's any more residue on the plane than what's produced with smoke oil.
The diesel fuel is green but it still produced white smoke.
The kerosene is crystal clear like the smoke oil.
Their flash points seem to be about the same as the smoke oil.
Nothing scientific but these are my crude observations.
pic 2:
I took the Yellow AT-6 Texan out to maiden but the engine would not stay running and would only burn the fuel pumped into the carb.
I took it home and took the carb apart: took both needle valves out, cleaned out some 'junk' in the screen, air blew out all the orifices and fixed what looked like a backwards installed gasket (opposite side of the diaphram).
All seems to be working now.
I'm getting around 1900 RPM's on idle and around 5800 RPM's full throttle on a Zinger 24X10 prop.
3W said 5500-6100 is ideal.
I started the 'H' and 'L' end at one turn out and had to lean the 'H' end to get from 5100 to 5800 RPM's.
The needles only needed a very minor adjustment to get dramatic changes.
I'm glad that I tested the engine on the ground: the fuel line touched the muffler and was fused shut.
I routed the line over the top of the crankcase plus put a tough plastic sheathing over it.
Here's a video of the engine running after adjustments:
http://www.rcuvideos.com/item/9BJXKQ2YC0PLGK09
06-05-2008, 06:24 PM
#279
RE: YELLOW AT-6 TEXAN BUILD THREAD
pic 1:
Unable to run the engine multiple times and hard to start so I sent it to Bobby at 3W and let him fix it.
pic 2:
Decided to work on the Ziroli C-45 beechcraft.
I checked the prop nut and it needed an extra 1/2 turn to tighten the nut up on the wood prop after sitting all winter.
Took the cowls off and adjusted the engines.
Low RPM around 2100 and max out at 6300 on 18X10's.
Left engine on Aux 3 (right side lever on JR 2.4 X9303) mixed into right engine on throttle.
Video of engine test (G-38's):
http://www.rcuvideos.com/item/V11BMB6BZZWJ447Q
Unable to run the engine multiple times and hard to start so I sent it to Bobby at 3W and let him fix it.
pic 2:
Decided to work on the Ziroli C-45 beechcraft.
I checked the prop nut and it needed an extra 1/2 turn to tighten the nut up on the wood prop after sitting all winter.
Took the cowls off and adjusted the engines.
Low RPM around 2100 and max out at 6300 on 18X10's.
Left engine on Aux 3 (right side lever on JR 2.4 X9303) mixed into right engine on throttle.
Video of engine test (G-38's):
http://www.rcuvideos.com/item/V11BMB6BZZWJ447Q
06-11-2008, 03:52 PM
#281
RE: YELLOW AT-6 TEXAN BUILD THREAD
The weather was perfect so I went out at 7 this morning to maiden the Ziroli Beechcraft C-45.
I checked all the controls again and found I had the ailerons reversed (that would have been bad news).
Started to take off and she started to the left and then ground looped at a very slow speed.
Found the tail wheel control had just failed.
I figure I might as well take a bunch of pictures since no body is out that early on a Wednesday morning.
The only safe way to put this baby on her back is with lots of foam.
A clevis came off so I put some fuel tubing over them for the tail wheel control servo.
I checked all the controls again and found I had the ailerons reversed (that would have been bad news).
Started to take off and she started to the left and then ground looped at a very slow speed.
Found the tail wheel control had just failed.
I figure I might as well take a bunch of pictures since no body is out that early on a Wednesday morning.
The only safe way to put this baby on her back is with lots of foam.
A clevis came off so I put some fuel tubing over them for the tail wheel control servo.
06-11-2008, 03:53 PM
#282
RE: YELLOW AT-6 TEXAN BUILD THREAD
Another pilot came out with his EDF jet which I think is by Jet Hanger so I videoed the take off and landing:
Jet Hanger Hobbies
Mirage 2000
120 mm fan
10 cell lipo 6000mah
weight 13.4 lbs
thrust in the plane 12.6 lbs.
http://www.rcuvideos.com/item/MNCVDDKPFSFGFR5X
http://www.rcuvideos.com/item/RSP9LTM2TYH0ZFF5
Jet Hanger Hobbies
Mirage 2000
120 mm fan
10 cell lipo 6000mah
weight 13.4 lbs
thrust in the plane 12.6 lbs.
http://www.rcuvideos.com/item/MNCVDDKPFSFGFR5X
http://www.rcuvideos.com/item/RSP9LTM2TYH0ZFF5
06-11-2008, 04:01 PM
#283
RE: YELLOW AT-6 TEXAN BUILD THREAD
I figure I'll post some pictures of the club's field since we don't see that too often!
Besides our shelter, we just added and fenced off an area for control line.
Someone had the cool idea of covering the set up tables with tarps which should make them last a lot longer.
I believe the runway is 500 feet long plus about 100 yards of grass to the right and about 200 yards of grass to the left plus about another 50' of grass runway parallel to the paved runway.
We also just added a perpendicular grass runway to the far left end.
It was my turn to cut the grass so I cut it in a spiral pattern to keep pushing the grass clippings away from the runway.
Besides our shelter, we just added and fenced off an area for control line.
Someone had the cool idea of covering the set up tables with tarps which should make them last a lot longer.
I believe the runway is 500 feet long plus about 100 yards of grass to the right and about 200 yards of grass to the left plus about another 50' of grass runway parallel to the paved runway.
We also just added a perpendicular grass runway to the far left end.
It was my turn to cut the grass so I cut it in a spiral pattern to keep pushing the grass clippings away from the runway.
06-12-2008, 09:36 AM
#285
RE: YELLOW AT-6 TEXAN BUILD THREAD
thanks,
I really enjoy all the 'green' when flying.
C-45 Beechcraft maiden:
I got the maiden in this morning at 7:30 AM.
She tracked straight down the runway and took off at a nice easy climb.
She's no 'speed demon' and really just lumbers along.
A couple click right aileron was needed.
I left the gear down on the maiden.
I used 30 degrees flaps instead of full on the landing.
I also brought her in hot to make sure I didn't float her in.
Once she set down, she stayed down.
Virtually no wind at that time of the morning.
I'll now check everything to insure all's OK.
I'm getting 2500 RPM on the low and 6400 on the high side.
I need to get the low end around 2000 as she doesn't quite want to stop when taxi'ing and I'd like to get around 6900 for a little more top speed.
pic 1/2/3:
No videos since I was the only one out there.
I usually transport the planes in my pop-up camper (gutted) but the C-45 fits and is easier to get into the back of the pickup truck.
I just grab both sides of the center wing by the spars and lift her in.
Two bungee cords connected to the retracts keep the plane from moving and the tail from smashing into the front bed on any fast stops.
A blanket on top to protect the paint and a soft top cover on the pickup keeps her safe.
I really enjoy all the 'green' when flying.
C-45 Beechcraft maiden:
I got the maiden in this morning at 7:30 AM.
She tracked straight down the runway and took off at a nice easy climb.
She's no 'speed demon' and really just lumbers along.
A couple click right aileron was needed.
I left the gear down on the maiden.
I used 30 degrees flaps instead of full on the landing.
I also brought her in hot to make sure I didn't float her in.
Once she set down, she stayed down.
Virtually no wind at that time of the morning.
I'll now check everything to insure all's OK.
I'm getting 2500 RPM on the low and 6400 on the high side.
I need to get the low end around 2000 as she doesn't quite want to stop when taxi'ing and I'd like to get around 6900 for a little more top speed.
pic 1/2/3:
No videos since I was the only one out there.
I usually transport the planes in my pop-up camper (gutted) but the C-45 fits and is easier to get into the back of the pickup truck.
I just grab both sides of the center wing by the spars and lift her in.
Two bungee cords connected to the retracts keep the plane from moving and the tail from smashing into the front bed on any fast stops.
A blanket on top to protect the paint and a soft top cover on the pickup keeps her safe.
06-12-2008, 01:38 PM
#286
RE: YELLOW AT-6 TEXAN BUILD THREAD
All looked good after the maiden except the air lines are loosing about 30 lbs after an hour.
I replaced all the lines and quick disconnects to the mains and now the pressure the has been holding at 100 lbs after a half hour.
The originals to the mains were pretty brittle.
I used up 1 1/2 packages of robart air lines.
I replaced all the lines and quick disconnects to the mains and now the pressure the has been holding at 100 lbs after a half hour.
The originals to the mains were pretty brittle.
I used up 1 1/2 packages of robart air lines.
06-12-2008, 04:40 PM
#287
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RE: YELLOW AT-6 TEXAN BUILD THREAD
wow very nice!! samuel!!!..an beautyful place!!!...but an quastion!!! what is it the towers on way????..i see in the video four towers...what is it??...
06-12-2008, 04:55 PM
#288
RE: YELLOW AT-6 TEXAN BUILD THREAD
thanks,
One set of six towers is a gas powered electrical plant and another set of towers/silos to the right of the farm house is the Miller brewery plant. They must put out a lot of beer because there must be a good twelve very large silos on their property.
pic 1:
Something that I just noticed today: If you're building this plane, it looks like a lot of down thrust is used on the engines!
It must be right because my elevator is at neutral and the plane flies level.
One set of six towers is a gas powered electrical plant and another set of towers/silos to the right of the farm house is the Miller brewery plant. They must put out a lot of beer because there must be a good twelve very large silos on their property.
pic 1:
Something that I just noticed today: If you're building this plane, it looks like a lot of down thrust is used on the engines!
It must be right because my elevator is at neutral and the plane flies level.
06-15-2008, 06:08 PM
#289
RE: YELLOW AT-6 TEXAN BUILD THREAD
at the field:
Not a cloud in the sky, mid 80's and light breeze down the runway.
pic 1: C-45
Got the second flight in today on the C-45.
After replacing the air lines; after 3 days, there was only a 12 lb lost.
I retracted the gear this time.
Didn't notice any change of CG with them up.
It took about 75% of the runway to get her up but I made sure she had flying speed, and used a scale low angle take off.
The tail wheel clevis came off again after landing so I'm going to put metal ones on.
(You'll see in the video where I had to go to the end of the runway to get her going in the right direction).
On full flaps on the back side, she rose some so I put them back to 30 degrees.
I think this is do to keeping the speed too high on these first flights on landing.
I brought her in hot again but she landed nice on the mains and the tail stayed up until she drained off speed.
I'm glad I landing on the grass to slow her down.
Starting engines:
I primed both engines first and found the starter to be the easiest to get them both running quickly.
http://www.rcuvideos.com/item/TQ4BJDWSMMDHQBW9
Taxi out:
http://www.rcuvideos.com/item/LNSDNKX8S5SDXDC2
Take off:
http://www.rcuvideos.com/item/C955YMWK0C5JHV0Y
Fly by:
http://www.rcuvideos.com/item/N5L07DYVBG3Y1Z5H
Landing:
http://www.rcuvideos.com/item/4C1D***4KTZZFMKV
Taxi back:
http://www.rcuvideos.com/item/TT975SH22SV0SD9J
pic 2:
A gee bee:
taking off:
http://www.rcuvideos.com/item/BM842CZ4CZ2VJC09
landing:
http://www.rcuvideos.com/item/7ZWVCM4HJQ3MZ8BR
pic 3:
Fokker DR-7
taking off:
http://www.rcuvideos.com/item/L70GPX0MGRZS9XW4
landing:
http://www.rcuvideos.com/item/NQX7T063DL3C5X8T
pic 4:
you never know will show up at the field!
Not a cloud in the sky, mid 80's and light breeze down the runway.
pic 1: C-45
Got the second flight in today on the C-45.
After replacing the air lines; after 3 days, there was only a 12 lb lost.
I retracted the gear this time.
Didn't notice any change of CG with them up.
It took about 75% of the runway to get her up but I made sure she had flying speed, and used a scale low angle take off.
The tail wheel clevis came off again after landing so I'm going to put metal ones on.
(You'll see in the video where I had to go to the end of the runway to get her going in the right direction).
On full flaps on the back side, she rose some so I put them back to 30 degrees.
I think this is do to keeping the speed too high on these first flights on landing.
I brought her in hot again but she landed nice on the mains and the tail stayed up until she drained off speed.
I'm glad I landing on the grass to slow her down.
Starting engines:
I primed both engines first and found the starter to be the easiest to get them both running quickly.
http://www.rcuvideos.com/item/TQ4BJDWSMMDHQBW9
Taxi out:
http://www.rcuvideos.com/item/LNSDNKX8S5SDXDC2
Take off:
http://www.rcuvideos.com/item/C955YMWK0C5JHV0Y
Fly by:
http://www.rcuvideos.com/item/N5L07DYVBG3Y1Z5H
Landing:
http://www.rcuvideos.com/item/4C1D***4KTZZFMKV
Taxi back:
http://www.rcuvideos.com/item/TT975SH22SV0SD9J
pic 2:
A gee bee:
taking off:
http://www.rcuvideos.com/item/BM842CZ4CZ2VJC09
landing:
http://www.rcuvideos.com/item/7ZWVCM4HJQ3MZ8BR
pic 3:
Fokker DR-7
taking off:
http://www.rcuvideos.com/item/L70GPX0MGRZS9XW4
landing:
http://www.rcuvideos.com/item/NQX7T063DL3C5X8T
pic 4:
you never know will show up at the field!
06-16-2008, 09:00 AM
#290
RE: YELLOW AT-6 TEXAN BUILD THREAD
Here's another video of the GEEBEE using a 'real' video camera:
http://www.rcuvideos.com/item/MK2XRG09W4RQ1T9M
http://www.rcuvideos.com/item/MK2XRG09W4RQ1T9M
06-22-2008, 05:14 AM
#293
RE: YELLOW AT-6 TEXAN BUILD THREAD
thanks.
I got another flight (3rd) in yesterday on the C-45 (early Saturday morning at 8 AM before the crosswinds came in).
One retract was angled in on the taxi back and, later, I found that one of the bolts holding the 'folding' mechanism to the retract frame came out (an easy fix). Also, only got one flight on the spit before it wouldn't start again (fortunately, the engine quit on the taxi back to the pits). Found that the spark plug was loose.
-
At the field:
pic 1/2/3/4:
A few of the planes at the field on Saturday.
There were two more WW I planes plus a 'Russian' twin engine.
The PT-19 has a servo controlled pilot head that turns and an onboard engine starter.
I was going to post the video of the pilot head movement and engine start but the 'video' section says I have exceeded my quota.
I tried to contact Marc the admin. dude but it says only friends can contact him (catch 22).
I got another flight (3rd) in yesterday on the C-45 (early Saturday morning at 8 AM before the crosswinds came in).
One retract was angled in on the taxi back and, later, I found that one of the bolts holding the 'folding' mechanism to the retract frame came out (an easy fix). Also, only got one flight on the spit before it wouldn't start again (fortunately, the engine quit on the taxi back to the pits). Found that the spark plug was loose.
-
At the field:
pic 1/2/3/4:
A few of the planes at the field on Saturday.
There were two more WW I planes plus a 'Russian' twin engine.
The PT-19 has a servo controlled pilot head that turns and an onboard engine starter.
I was going to post the video of the pilot head movement and engine start but the 'video' section says I have exceeded my quota.
I tried to contact Marc the admin. dude but it says only friends can contact him (catch 22).
06-22-2008, 06:28 AM
#294
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Join Date: Sep 2006
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RE: YELLOW AT-6 TEXAN BUILD THREAD
Hello: In one of your photo's you show a model that replicates 4 small jets being flown in formation. Do you have any information on that model? By that I mean is there a plan available that you know of? Any information would be very much appreciated. Thank You, Respectfully: Bob Byrnes, Toronto, Ontario Canada.
06-22-2008, 04:29 PM
#295
My Feedback: (20)
RE: YELLOW AT-6 TEXAN BUILD THREAD
Bob,
The formation flying jets are mine. They are a scaled up, major modification of a set of plans by Ken Willard (I don't have the plans so I'm going on memory here on the designer). The plans version is called "the Blue Birds" and is probably available form RC Modeler plans service. The plans I used belong to another club member. The plans are for a hand-launch version with a .10 for power. The planes look sorta like Skyhawks. I enlarged everything by 40% and added retractable tail-dragger gear. Power is a .90. The guy who owns the plans also did a 40% scaleup with planes that looked like F-16's. It crashed last year and we wanted another for our club airshow and I volunteered. He determined the .90 is appropriatelots of drag. My model uses 5/16" diameter carbon fiber tubes to form a diamond for the main structure. I also changed the flat bottom plans airfoil to a NACA 2412. The fuselages are vacuum formed shells that attach to a crutch. I tried to get the essence of Grumman Cougars.
Chuck Snyder
The formation flying jets are mine. They are a scaled up, major modification of a set of plans by Ken Willard (I don't have the plans so I'm going on memory here on the designer). The plans version is called "the Blue Birds" and is probably available form RC Modeler plans service. The plans I used belong to another club member. The plans are for a hand-launch version with a .10 for power. The planes look sorta like Skyhawks. I enlarged everything by 40% and added retractable tail-dragger gear. Power is a .90. The guy who owns the plans also did a 40% scaleup with planes that looked like F-16's. It crashed last year and we wanted another for our club airshow and I volunteered. He determined the .90 is appropriatelots of drag. My model uses 5/16" diameter carbon fiber tubes to form a diamond for the main structure. I also changed the flat bottom plans airfoil to a NACA 2412. The fuselages are vacuum formed shells that attach to a crutch. I tried to get the essence of Grumman Cougars.
Chuck Snyder
06-23-2008, 10:49 AM
#297
RE: YELLOW AT-6 TEXAN BUILD THREAD
This weekend at the field videos:
PT-19 remote pilot head movement:
http://www.rcuvideos.com/item/5X1QGPVVZVCW8SLT
PT-19 remote start of engine on the ground:
http://www.rcuvideos.com/item/HGT9C3ZSD0P0TMWX
PT-19 remote start of engine while flying (keep your eye on the prop):
http://www.rcuvideos.com/item/898XQ7CTXTL1X94T
This should bring back old memories.
This spring, we added this to our RC field:
http://www.rcuvideos.com/item/DSSHWMQ32DS65PKQ
PT-19 remote pilot head movement:
http://www.rcuvideos.com/item/5X1QGPVVZVCW8SLT
PT-19 remote start of engine on the ground:
http://www.rcuvideos.com/item/HGT9C3ZSD0P0TMWX
PT-19 remote start of engine while flying (keep your eye on the prop):
http://www.rcuvideos.com/item/898XQ7CTXTL1X94T
This should bring back old memories.
This spring, we added this to our RC field:
http://www.rcuvideos.com/item/DSSHWMQ32DS65PKQ
06-23-2008, 08:45 PM
#298
RE: YELLOW AT-6 TEXAN BUILD THREAD
AT-6 ENGINE TEST FOR MAIDEN ON TUESDAY.
PIC 1:
I got my 3W-75 back from Cactus aviation.
Usually UPS arrives around 4 pm but, of all days, he didn't get here until '20 to 8:00 PM' (fortunately, it's summer so it doesn't get dark until 9:30).
3W replaced two piston rings, reeds, ignition back plate and spark plug and decarbon cylinder/piston with two hours labor at $35 per hour for a total of $138 (so much for buying a used engine from someone that I don't know to save some money!).
She kept stopping after a half a second.
The low end was at one so I kept increasing it until it was at 1 3/4 which didn't work so I moved it the other way to 3/4 open which fixed the problem. The low end is 1600 RPMs with high at 6100 but I richened it an 1/8th turn to get 6000 RPMs with a Zinger 24X10 prop.
It looks like the weather is good for tomorrow so I'll maiden her around 10 AM.
Normally, I don't like to run engines without the wings on but there didn't appear to be much vibration plus I didn't run her long.
Video of engine test.
http://www.rcuvideos.com/item/HNC2CNPV8LLYDDZN
PIC 1:
I got my 3W-75 back from Cactus aviation.
Usually UPS arrives around 4 pm but, of all days, he didn't get here until '20 to 8:00 PM' (fortunately, it's summer so it doesn't get dark until 9:30).
3W replaced two piston rings, reeds, ignition back plate and spark plug and decarbon cylinder/piston with two hours labor at $35 per hour for a total of $138 (so much for buying a used engine from someone that I don't know to save some money!).
She kept stopping after a half a second.
The low end was at one so I kept increasing it until it was at 1 3/4 which didn't work so I moved it the other way to 3/4 open which fixed the problem. The low end is 1600 RPMs with high at 6100 but I richened it an 1/8th turn to get 6000 RPMs with a Zinger 24X10 prop.
It looks like the weather is good for tomorrow so I'll maiden her around 10 AM.
Normally, I don't like to run engines without the wings on but there didn't appear to be much vibration plus I didn't run her long.
Video of engine test.
http://www.rcuvideos.com/item/HNC2CNPV8LLYDDZN
06-24-2008, 05:39 PM
#300
RE: YELLOW AT-6 TEXAN BUILD THREAD
That's yellows spinner.
they did a nice job on it.
pic 1/2:
The engine wouldn't start again.
Took it home and got it too run very rough and not very long.
There could be something that I'm doing wrong but everything seems OK.
I think its the carb since I checked the spark plug against the engine head.
Gas is dripping from the carb but it doesn't seem to be getting a proper flow to the plug.
Of course, it also appears that gas is leaking at the gasket between the cylinder head and block, which would kill any chance of a good running engine.
Sent the engine back.
That's another good week shot.
At least, the engine didn't die while flying!
The one consolation is she looks pretty on the ground!
Tomorrow, it looks pretty good in the morning so I might take the C-45 out for its 4th flight.
they did a nice job on it.
pic 1/2:
The engine wouldn't start again.
Took it home and got it too run very rough and not very long.
There could be something that I'm doing wrong but everything seems OK.
I think its the carb since I checked the spark plug against the engine head.
Gas is dripping from the carb but it doesn't seem to be getting a proper flow to the plug.
Of course, it also appears that gas is leaking at the gasket between the cylinder head and block, which would kill any chance of a good running engine.
Sent the engine back.
That's another good week shot.
At least, the engine didn't die while flying!
The one consolation is she looks pretty on the ground!
Tomorrow, it looks pretty good in the morning so I might take the C-45 out for its 4th flight.