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All Forums >> RC Airplanes >> RC Jets >> RE: C-ARF Ultra Flash build Thread + Video
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RE: C-ARF Ultra Flash build Thread + Video - 3/28/2012 8:33 PM   
Ramz



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From: Petitcodiac, NB, CANADA
Status: offline 		Thanks. I will check it out. Leaning towards building something myself.

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RE: C-ARF Ultra Flash build Thread + Video - 3/28/2012 8:49 PM   
phjoker



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quote:

ORIGINAL: Ramz

How do you guys transport your Ultra Flashes? (Mainly the fuselage) I am going to build something... Perhaps some sort of cradle that will double as a stand for assembly and disassembly at the field. My UF will be transported in a trailer with lots of room. The major thing I am concerned about is making sure the paint does not wear or scuff when the trailer is rolling down a bumpy road. Pictures would be nice!

Thanks.


I just lay mine on foam in the trailer and use the flat bungee cords.

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RE: C-ARF Ultra Flash build Thread + Video - 3/28/2012 8:57 PM   
mtnflyer14



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Status: online 		Just need to make sure the aft end of the fuselage is not resting on the elevator control horns. If so, you will probably cause delamination in the horizontal stab.
Regards,
Gus

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RE: C-ARF Ultra Flash build Thread + Video - 3/29/2012 7:30 AM   
consoleworld



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From: Athens, GREECE
Status: offline 		Here some pictures from the NACA inlet .

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< Message edited by consoleworld -- 3/29/2012 11:05 AM >

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RE: C-ARF Ultra Flash build Thread + Video - 3/29/2012 9:15 PM   
jampl


 

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Status: offline 		I simply use a wooden storage box bolted to the bottom of the trailer. I also made a cradle with white insulating foam (found at building materials stores). The cradle is removable so that I can insert any other shape for different planes. I secure it with a couple of belts. Just check the pictures.

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RE: C-ARF Ultra Flash build Thread + Video - 3/30/2012 1:38 AM   
BoomerSooner


 

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Status: offline 		Which electric retracts are folks using on the ultra flash? Anyone installed the electron units?

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RE: C-ARF Ultra Flash build Thread + Video - 3/30/2012 3:40 AM   
SniperWj


 

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Status: offline 		other then enlarge the retract wood mount the electron looks good everywhere



yiming

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RE: C-ARF Ultra Flash build Thread + Video - 3/30/2012 10:08 AM   
Philip Baum



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From: Krefeld, GERMANY
Status: offline 		Hi,

did anybody flown the UF with the saddle tanks?

I am wondering if you have to check the CG with the tanks or if you can easily fuel and fly?

Best regards

Philip

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RE: C-ARF Ultra Flash build Thread + Video - 3/30/2012 11:38 AM   
Robrow



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quote:

ORIGINAL: Philip Baum

Hi,

did anybody flown the UF with the saddle tanks?

I am wondering if you have to check the CG with the tanks or if you can easily fuel and fly?

Best regards

Philip


Just fuel and fly Philip, no issues that I can see.

Rob.

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RE: C-ARF Ultra Flash build Thread + Video - 4/2/2012 1:36 AM   
Mavrik!


 

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Status: offline 		Had a great weekend at Wangaratta Jets in OZ over the weekend.

I know there is some debate about speed in prior posts, however my UF can do 400 kmph.

Here is a screen shot of my GPS reading Multiplex set for Spacial 3D max reading and horizontal max GPS speed. You can see they are very close readings so it is ACCURATE.

Note I did not fly to get a max reading, was just having fun!!!!

Mav

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RE: C-ARF Ultra Flash build Thread + Video - 4/2/2012 3:25 AM   
mtnflyer14



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Status: online 		Great - your UF can do 240 MPH in Australia. But, the fact is, we have an AMA restriction of 200 mph in the US and we need to adhere to that rule for a lot of really good reasons, not the least of which is the FAA's scrutiny of our hobby here. Anyone who ignores the AMA restriction and excedes it is jeopardizing this wonderful hobby for everyone, and that is unacceptable.
Regards,
Gus

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RE: C-ARF Ultra Flash build Thread + Video - 4/2/2012 12:24 PM   
Mavrik!


 

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quote:

ORIGINAL: mtnflyer14

Great - your UF can do 240 MPH in Australia. But, the fact is, we have an AMA restriction of 200 mph in the US and we need to adhere to that rule for a lot of really good reasons, not the least of which is the FAA's scrutiny of our hobby here. Anyone who ignores the AMA restriction and excedes it is jeopardizing this wonderful hobby for everyone, and that is unacceptable.
Regards,
Gus


Gus,

Not debating your governing body rules AMA, rather confirming the UF can reach 400 kmph plus quite easily!

This should satisfy some of the skeptics out there!

Mav

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RE: C-ARF Ultra Flash build Thread + Video - 4/2/2012 12:28 PM   
Robrow



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Status: offline 		What is the correct level of fuel left in the fuz tank to lank with without risking a flameout?

Rob.

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RE: C-ARF Ultra Flash build Thread + Video - 4/2/2012 12:31 PM   
Robrow



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quote:

ORIGINAL: Mavrik!

Had a great weekend at Wangaratta Jets in OZ over the weekend.

I know there is some debate about speed in prior posts, however my UF can do 400 kmph.

Here is a screen shot of my GPS reading Multiplex set for Spacial 3D max reading and horizontal max GPS speed. You can see they are very close readings so it is ACCURATE.

Note I did not fly to get a max reading, was just having fun!!!!

Mav


Looks about right for a Merlin 140.

Rob.

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RE: C-ARF Ultra Flash build Thread + Video - 4/2/2012 12:35 PM   
Robrow



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From: Southport, UNITED KINGDOM
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quote:

ORIGINAL: mtnflyer14

Great - your UF can do 240 MPH in Australia. But, the fact is, we have an AMA restriction of 200 mph in the US and we need to adhere to that rule for a lot of really good reasons, not the least of which is the FAA's scrutiny of our hobby here. Anyone who ignores the AMA restriction and excedes it is jeopardizing this wonderful hobby for everyone, and that is unacceptable.
Regards,
Gus


How do the AMA/FAA enforce this rule?

Rob.

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RE: C-ARF Ultra Flash build Thread + Video - 4/2/2012 2:20 PM   
mtnflyer14



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From: Colorado Springs, CO, USA
Status: online 		To be honest, I don't know if the AMA or FAA attend jet fly-ins to monitor the airspeed of the jets. But given the FAA's interest in 'unmanned aerial systems', we don't want to give them any reason to get more involved in our hobby.
Regards,
Gus

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RE: C-ARF Ultra Flash build Thread + Video - 4/2/2012 5:34 PM   
tp777fo



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Status: offline 		They were at the latest AZ rally to watch...there is a thread about it.

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RE: C-ARF Ultra Flash build Thread + Video - 4/3/2012 12:11 PM   
ricardinho


 

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From: pasadena, MD, USA
Status: offline 		basil i maidened the ultra lightning..wow what a nice plane. . easy to fly and very fast with the 180...so how are you makeing out with the flash...when doyou think you are comming up this way to fly?...pat

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RE: C-ARF Ultra Flash build Thread + Video - 4/3/2012 12:54 PM   
Dave Wilshere


 

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quote:

ORIGINAL: Robrow

What is the correct level of fuel left in the fuz tank to lank with without risking a flameout?

Rob.


Rob

I usually run my fuse tank down so that it shows 15-18mm of fuel at the front sitting on the deck, I can run lower with minimal air in the header, but it comes down to the fact I do very few long verticals in the last minute and a half of the flight, loops and 8's are fine as fuel is under G. I have never had more than a tiny bit of air in my header using the kit tank set up

Dave

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RE: C-ARF Ultra Flash build Thread + Video - 4/3/2012 2:17 PM   
basimpsn


 

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From: mia, FL, USA
Status: offline 		Good job pat glad to hear all went well. I'm engine less for now can't seem to make up my mine between the K-170 and the K-180 I will give you a call.


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RE: C-ARF Ultra Flash build Thread + Video - 4/3/2012 5:45 PM   
Robrow



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quote:

ORIGINAL: Dave Wilshere


quote:

ORIGINAL: Robrow

What is the correct level of fuel left in the fuz tank to lank with without risking a flameout?

Rob.


Rob

I usually run my fuse tank down so that it shows 15-18mm of fuel at the front sitting on the deck, I can run lower with minimal air in the header, but it comes down to the fact I do very few long verticals in the last minute and a half of the flight, loops and 8's are fine as fuel is under G. I have never had more than a tiny bit of air in my header using the kit tank set up

Dave


Thanks Dave, this is my tank after a flight, probably a little on the safe side?

Rob.

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RE: C-ARF Ultra Flash build Thread + Video - 4/3/2012 8:33 PM   
ricardinho


 

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Status: offline 		i am not a speed demon so mine was about like that or a little more with 120sx..

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RE: C-ARF Ultra Flash build Thread + Video - 4/3/2012 9:52 PM   
tp777fo



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Status: offline 		I'm building one with saddle tanks. I plan on running the main to the saddles through a "y"so the main feeds first. The saddles will "y" to the uat. Thoughts?

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RE: C-ARF Ultra Flash build Thread + Video - 4/3/2012 9:55 PM   
ricardinho


 

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Status: offline 		yes thats sound right..i believe thats the way my lightning is done...i will look when i get home and post back

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RE: C-ARF Ultra Flash build Thread + Video - 4/3/2012 10:12 PM   
ricardinho


 

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Status: offline 		ok looking at my lightning with saddle tanks..you will have two sets of tees.. one will tee off the vent.. one will tee to the uat...looks pretty simple.. i didnt build this but it looks easy...pat

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