My New A7 ARF for Wren 44
05-09-2006, 09:31 AM
#104
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RE: My New A7 ARF for Wren 44
Hello Chris,
You know you've got enough Coleman gas there with that A7 for about 3 years.
So what other ARFs are you and your dad considering?
Brookfield Wisconsin
R500 Cougar,
MW44 Sabre
You know you've got enough Coleman gas there with that A7 for about 3 years.
So what other ARFs are you and your dad considering?
Brookfield Wisconsin
R500 Cougar,
MW44 Sabre
05-10-2006, 10:22 AM
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RE: My New A7 ARF for Wren 44
@ Dail, I don't think we'll be there. Larry is currently overseas at the moment, and I'm working on finishing up the last required parts/items for the A-7 production. Wasn't there an LA jets a couple months ago? Is this a different event?
@ L Turner, Yeah, you know, can never have too much propane with you!
You know how it works, the minute you run out, is the one time you don't have more! Regarding the other ARFs, essentially, we are working on ARFing our existing line of aircraft...that is the long term goal. We are working on multiple aircraft at the moment to follow the A-7 but I am unsure as to which will be available first. So, would rather not say which just yet until we have a better ETA for some prototypes. We should have some new prototypes here within the next couple months.
Chris
@ L Turner, Yeah, you know, can never have too much propane with you!
You know how it works, the minute you run out, is the one time you don't have more! Regarding the other ARFs, essentially, we are working on ARFing our existing line of aircraft...that is the long term goal. We are working on multiple aircraft at the moment to follow the A-7 but I am unsure as to which will be available first. So, would rather not say which just yet until we have a better ETA for some prototypes. We should have some new prototypes here within the next couple months.Chris
05-11-2006, 02:55 AM
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RE: My New A7 ARF for Wren 44
Yes, we will have 3 LA Jet events here at the Basin this year. one more in the fall. I will be refinishing the F-4 soon to Air Force. I need a better color scheme than "Duke" Cunningham's Showtime 100 these days. looking forward to the Skyray!
05-11-2006, 10:22 AM
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RE: My New A7 ARF for Wren 44
Hi Dail,
Well, maybe we can work out going to the one in the fall. I didn't realize that the event was going to occur more than once this year. Seems all the CA events have occured in a months time frame this year. I hear you on the Showtime 100 scheme. If you need some info on F-4 schemes, I may be able to help. Just let me know.
Chris
Well, maybe we can work out going to the one in the fall. I didn't realize that the event was going to occur more than once this year. Seems all the CA events have occured in a months time frame this year. I hear you on the Showtime 100 scheme. If you need some info on F-4 schemes, I may be able to help. Just let me know.
Chris
05-16-2006, 06:15 PM
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RE: My New A7 ARF for Wren 44
I would like to see more pics of the inside of the jet if you have them. plus i heard that the a7 latteral stability is kind of off due to the annahedral, it seems true from the video on take off the wings were wagging back and fourth. what can you say about this is it true? Can you put 50-60 oz of fuel in there? from the only picture of the inside it looks tight.
05-16-2006, 07:21 PM
#109
RE: My New A7 ARF for Wren 44
Gidusko,
I had a few minutes of flights on this A7 thanks to their invitation. As a newbie, I felt this plane is very stable in flight despite the fact that it was really windy. Without the anhedral on a high swept back wing, the plane won't turn or bank without a lot of aileron input. I think the wagging was due to overcorrection on the gusty cross wind landing. I plan to put a 50 oz tank on mine. There is some room, but not as roomy as my F15.
Chris - are you able to post some inside pictures so we can see what kind of lay-up in there?
Regards,
Mike
I had a few minutes of flights on this A7 thanks to their invitation. As a newbie, I felt this plane is very stable in flight despite the fact that it was really windy. Without the anhedral on a high swept back wing, the plane won't turn or bank without a lot of aileron input. I think the wagging was due to overcorrection on the gusty cross wind landing. I plan to put a 50 oz tank on mine. There is some room, but not as roomy as my F15.
Chris - are you able to post some inside pictures so we can see what kind of lay-up in there?
Regards,
Mike
05-17-2006, 11:01 AM
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RE: My New A7 ARF for Wren 44
Gidusko,
As Mike mentioned, the A-7 is actually extremely stable in roll. It wants to hold track and maintain straight and level and will even right itself out of a turn if you release the sticks. The airplane literally flies like a trainer (high performance of course ) it's so stable . The wing rock you're seeing in the video is likely due to the wind. There was a bit of a cross wind which was gusty at times. Also remember that this is video from the second flight and the airplane was still being dialed in and trimmed.
I will take some pictures of the interior installations tonight. I can tell that there is room to carry 60oz of fuel. Buck and I looked at this a while back. You can carry a 40oz tank in the recommended location for the 44 and a 16oz tank behind the canopy.
Chris
As Mike mentioned, the A-7 is actually extremely stable in roll. It wants to hold track and maintain straight and level and will even right itself out of a turn if you release the sticks. The airplane literally flies like a trainer (high performance of course
) it's so stable . The wing rock you're seeing in the video is likely due to the wind. There was a bit of a cross wind which was gusty at times. Also remember that this is video from the second flight and the airplane was still being dialed in and trimmed.I will take some pictures of the interior installations tonight. I can tell that there is room to carry 60oz of fuel. Buck and I looked at this a while back. You can carry a 40oz tank in the recommended location for the 44 and a 16oz tank behind the canopy.
Chris
05-17-2006, 04:16 PM
#111
RE: My New A7 ARF for Wren 44
As Mike mentioned, I was at the field when the test flights were made. Looked great in the air, nice scale speed, looks bigger than it really is. It was a windy day, about 15 to 25 degrees cross, and it handled the conditions very well. Love that little MW-44!
You guys on the pre-order list are going to be very happy. [8D]
You guys on the pre-order list are going to be very happy. [8D]
05-17-2006, 05:10 PM
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RE: My New A7 ARF for Wren 44
Barry, Thanks for the kind words. Need to get her back out to the field. 
I've got the retract issues sorted out (was a very simple fix), now looking at getting the doors on.
Ram-bro, actually, you'd be surprised how many DF A-7s are currently on order. The airplane should fly just as well with the df as the turbine. Remember, the airplane was originally designed around DF when it was first introduced many years ago as a kit. Building will be just as simple as the turbine ARF with everything included required for DF. We are currently building up a DF prototype and installing an EDF unit we're working on. The plan is to make the df version suitable for glow or electric without any modifications required.
Chris
I've got the retract issues sorted out (was a very simple fix), now looking at getting the doors on.Ram-bro, actually, you'd be surprised how many DF A-7s are currently on order. The airplane should fly just as well with the df as the turbine. Remember, the airplane was originally designed around DF when it was first introduced many years ago as a kit. Building will be just as simple as the turbine ARF with everything included required for DF. We are currently building up a DF prototype and installing an EDF unit we're working on. The plan is to make the df version suitable for glow or electric without any modifications required.
Chris
05-19-2006, 10:34 AM
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RE: My New A7 ARF for Wren 44
@ Gidusko, I did not get a chance to take or post pictures until today, sorry about that. I've attached a couple shots of the internals. All the servos are installed through the wing saddle area...pretty centrally located really. I pulled the pipe out in one of the shots which shows everything pretty well. The only one in the nose area is the steering servo which is installed under the inlet ducting. The Rx and pump batteries along with the engine ECU are all up in the nose area with access through the canopy hatch. This allows for a full depth cockpit to be installed.
@ rongreg13, The ducting will be setup for a 5" fan be it EDF or GDF.
@ ram-bro, I want to say that the split for DF vs turbine is close to half actually. Pretty interesting.
Chris
@ rongreg13, The ducting will be setup for a 5" fan be it EDF or GDF.
@ ram-bro, I want to say that the split for DF vs turbine is close to half actually. Pretty interesting.
Chris
06-28-2006, 03:46 PM
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RE: My New A7 ARF for Wren 44
Chris or Larry, are you guys expieriencing dificulties with the Wren do to summer weather temps? There are several threads concerning problems and recently mine won't go to full power.It shut's down and reads "flameout or lowspeed". Since the temps hit the 90's iv'e been grounded. I have a converted JHH A-4 and Savex L-39. The Turbine is original green version with about 4 hours on it. Thanks to any and all who could shed some light. Doug
06-28-2006, 04:32 PM
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RE: My New A7 ARF for Wren 44
Here are a couple of shots of the main gear door on my kit A-7 I added the extra doors and aft link to the wire gear and it turned out really slick. The doors shown closed are without air pressure hence the gap-a-toesis.
06-29-2006, 10:24 AM
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RE: My New A7 ARF for Wren 44
Hi Doug,
No, we haven't seen any problems like you've described. The last time we had the 44 powered airplanes out, the engines performed fine. I don't remember the temps, but it was only about a week or two ago.
Chris
No, we haven't seen any problems like you've described. The last time we had the 44 powered airplanes out, the engines performed fine. I don't remember the temps, but it was only about a week or two ago.
Chris
07-17-2006, 06:01 PM
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RE: My New A7 ARF for Wren 44
Chris, since we are getting close to the release of the A7, what will coome in the kit and what will be required to complete the plane? I will be getting together all that will be reqired so that the build will be somewhat fast. I was hopeing to have the A7 in time for the 7th annual Missouri Valley Jet Scramble in August.
07-19-2006, 10:09 AM
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RE: My New A7 ARF for Wren 44
Ram-bro,
Basically, all you will need to supply are the power module, the servos, a belly mount nose retract unit, and the required air control accessories for the retract system. All of the accessory hardware will be included like pushrods, clevis', etc. Recommended servos are standards (45in-oz) for all surfaces except the elevator where we're using 70in-oz servos on each surface.
Chris
Basically, all you will need to supply are the power module, the servos, a belly mount nose retract unit, and the required air control accessories for the retract system. All of the accessory hardware will be included like pushrods, clevis', etc. Recommended servos are standards (45in-oz) for all surfaces except the elevator where we're using 70in-oz servos on each surface.
Chris