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YA Skyhawk and Wren 44 Gold Perfect together

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Old 04-02-2012, 12:14 PM
  #1
Mark 5
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Default YA Skyhawk and Wren 44 Gold Perfect together

Here are some pictures of my Skyhawk.
Will be flying it next week.
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Old 04-02-2012, 12:31 PM
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Default RE: YA Skyhawk and Wren 44 Gold Perfect together

Nice!

How much fuel are you carrying? No bellmouth on the pipe?
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Old 04-02-2012, 01:49 PM
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Default RE: YA Skyhawk and Wren 44 Gold Perfect together

Very nice job and clean install. Be sure to get some vids of your flights.
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Old 04-02-2012, 05:39 PM
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Default RE: YA Skyhawk and Wren 44 Gold Perfect together

Looks like a good home for my 44 gold. Lets know the details when fly it
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Old 04-02-2012, 06:31 PM
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Default RE: YA Skyhawk and Wren 44 Gold Perfect together

Thanks for the compliments, I will try to get some video next week. Shaun can you tell me the what C.G. you used. The instruction says it should be 12 1/2" forward of the trailing edge at the wing root with fuel tanks full. What is the C.G. with empty tanks? I have a total of 40 ounces of fuel, two 10 ounnce tanks in front of the turbine and two 10 ounce tanks on either side of the turbine. The pipe was made by my friend Tino from Baltimore. It is very light and the wren 44 gold runs very cool with it.
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Old 04-02-2012, 08:01 PM
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Default RE: YA Skyhawk and Wren 44 Gold Perfect together

dude!!! I'm psyched to see someone else out there with the YA A4 and wren 44 combo. I've got one on the shelf that just needs a motor.

can't wait to see the result
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Old 04-03-2012, 07:28 AM
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Default RE: YA Skyhawk and Wren 44 Gold Perfect together

Your left upper tank looks to be a Sullivan Flex tank(clearish vs. your right tank that is normal white nylon). They are rated for Glow fuel only. I know that gasoline will destroy them, I am not sure about kerosene.
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Old 04-03-2012, 09:35 AM
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Default RE: YA Skyhawk and Wren 44 Gold Perfect together

Buck bring that A-4 to mississippi we can put my 44 in it and fly it all weekend.

David
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Old 04-03-2012, 09:48 AM
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Default RE: YA Skyhawk and Wren 44 Gold Perfect together

nice!!!! I just may do that amigo.

I can't wait for Mark5 to report back on how he the performance of the bird.
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Old 04-05-2012, 06:00 AM
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Default RE: YA Skyhawk and Wren 44 Gold Perfect together

Hello JeffH, you are correct, the sullivan flex tank is rated for glow fuel only. Good eyes. You saved me a lot of headaches. Thank you! Mark.
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Old 04-05-2012, 06:37 AM
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Default RE: YA Skyhawk and Wren 44 Gold Perfect together

Hi,

Use the 12.5" location. That will work fine if your tanks stay in the location you have them.
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Old 04-06-2012, 12:55 PM
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Default RE: YA Skyhawk and Wren 44 Gold Perfect together

Thank you Shaun. Is that measurement with the tanks full or empty.
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Old 04-06-2012, 07:42 PM
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Default RE: YA Skyhawk and Wren 44 Gold Perfect together

Hi,

Your tanks appear to be centered on or about the CG, so it shouldn't matter. Measure the CG location and mark it, then verify that the tank is centered on it, then measure it empty. Gear DOWN.
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Old 04-06-2012, 09:06 PM
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Default RE: YA Skyhawk and Wren 44 Gold Perfect together

Thank you Shaun. I love this little jet. It's small enough to fit in my SUV with the wings on and large enough to see in flight. I hope the Wren44 has enough power to lift it off my grass field.
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Old 04-07-2012, 12:23 AM
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Default RE: YA Skyhawk and Wren 44 Gold Perfect together

I agree with the author's point of view! I learned a lot. Thank you!


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Old 09-15-2012, 10:12 PM
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Default RE: YA Skyhawk and Wren 44 Gold Perfect together

I finally got the chance to put two flights on the Skyhawk. The take off roll is similar to the ducted fan Skyhawk,but once in the air the wren 44 has better vertical, however the top speed is also similar to the ducted fan Skyhawk. The Skyhawk is also very stable and easy to fly which surprised me. I do not think that my Skyhawk has enough power to take off of grass which was my main concern.
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Old 09-16-2012, 03:14 AM
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Default RE: YA Skyhawk and Wren 44 Gold Perfect together

What's the ready to fly weight? I'm just finishing up a T-45... and I'm planing on flying it from grass.

One thing... I know they are a little pricey... but if you change to the Wren pipe... they claim a 5% thrust increase.
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Old 09-16-2012, 05:52 AM
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Default RE: YA Skyhawk and Wren 44 Gold Perfect together

Hi Tony, the Skyhawk weighs 12 and 3/4 LBS without fuel. I dont know how guys are getting them under 11 LBS. This combo flies very scale like at a little above 1/2 throttle and the light wing loding seems to help when landing. Mark
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Old 09-16-2012, 06:12 AM
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Default RE: YA Skyhawk and Wren 44 Gold Perfect together

Mark superb effort on the skyhawk.
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Old 09-16-2012, 10:04 AM
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Default RE: YA Skyhawk and Wren 44 Gold Perfect together

Mark, how did you choose the distance between the 44 nozzle and the tailpipe? I have a couple of Wren tailpipes in use with 44 Golds, and have set them at Wren's specified distance. However, someone gave me a tailpipe which is similar to yours, except the entrance is flared ever so slightly. I'd like to use the pipe in a model to save the expense of buying another Wren pipe, but can't decide how far to set it from the 44 nozzle.

Thanks

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Old 09-16-2012, 12:14 PM
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Default RE: YA Skyhawk and Wren 44 Gold Perfect together

Very Nice set up Mark.. It even pre heats the fuel for you Good luck with the Maiden.

If anyone is selling a Wren 44 Gold.. I am interested
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Old 09-16-2012, 02:01 PM
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Default RE: YA Skyhawk and Wren 44 Gold Perfect together

Nice job with your 44 amigo. I look forward to adding this motor to my stable
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Old 09-16-2012, 02:25 PM
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Default RE: YA Skyhawk and Wren 44 Gold Perfect together


Quote:
ORIGINAL: Mark 5

Hi Tony, the Skyhawk weighs 12 and 3/4 LBS without fuel. I dont know how guys are getting them under 11 LBS. This combo flies very scale like at a little above 1/2 throttle and the light wing loding seems to help when landing. Mark

Thanks for the info. I was worried about the 44 gold, and general grass flying. So... with fuel... you are at about 14 Lbs I guess. I'm projecting my T-45 at only being at 8~9 Lbs with fuel. I also left the retracts out, and put on 3" tires. (lol) I'l be the only guy with a "Tundra" T-45.





Quote:
ORIGINAL: Vettster

If anyone is selling a Wren 44 Gold.. I am interested

I had my 44 for sale for a few months. People were only offering $500... so I pulled it. They don't come up too often on the used, but hang in there... you'll find one.
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Old 09-16-2012, 05:21 PM
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Default RE: YA Skyhawk and Wren 44 Gold Perfect together

$500 bucks?? Must have been a bunch of EDF'ers thinking they could play with the big boys for the same price..lol

Im not in hurry for one.. Winter will soon be here
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Old 09-16-2012, 06:11 PM
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Default RE: YA Skyhawk and Wren 44 Gold Perfect together

Gordon, my Wren 44 gold is about 3/4 of an inch from the pipe. Tony if your T-45 is only 8 LBS ,it will be a rocket with the Wren 44.
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