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Old 03-03-2015, 06:52 AM   #61
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Re: Avro Arrow foamie EDF Conversion


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John, have you ever considered doing a twin 70 or 90 arrow?
Mitch
A large 90mm would be my preference. Having built some twins, I would rather only have to set up and balance one fan. Keeps cost down too.
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Old 03-03-2015, 10:51 AM   #62
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Re: Avro Arrow foamie EDF Conversion

Lloyd, the twin 50 mm kit is going for $250.00, that include the two EDF units and Fiberglass cloth. The 64 mm as a twin will be some what more if you want the EDF's included as they are more expensive. For example, I sold the 50's for $40.00 each, the 64's for $105.00 each so it would be less expensive if you provided your own favorite EDF's. However, since the kit is being revised there will be some additional parts so the final cost for the kit and Fiberglass cloth will be around $175 to under $200.

Since I already had marketed a single 90 mm Edf version, all composite including the EDF, I will not redo this. Also a twin 90 mm would require a totally new plane, too much work. I hope by redesigning the hot wire templates I can increase the interior space for twin 60, 64 and 70 mm EDF installation, your choice.

Also, I'm going to hot wire the more scale wings and vertical tail, right now they are flat sided and require sanding to shape them. Also, if you mount the main gear retract unit further back from the leading edge, I think there might be enough foam thickness for retracts.

But, this is the final version so if you one, better get in the line as I'm only doing this for this season.

Last edited by Dutkoski; 03-03-2015 at 11:58 AM. Reason: spelling
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Old 03-06-2015, 10:09 AM   #63
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Re: Avro Arrow foamie EDF Conversion

Eric, also, I have in the works a fairly large version, 1/8th scale.it will be designed as a turbine powered model being that big. But due to limited sales, the wings and vertical tail will be foam cores and not composite in design.

Now, foam core wings do have the advantage of being traditional lighter once built and for those who have landing mishaps, are easier to repair 😊

I want to reveal this project this coming July at the Jets Over Iroquois. The plug for the fuse is built, I'm at the stage of doing the details on it. I don't know if I'm going to put all the panel lines on it though, but I might, that's a lot of work for maybe a few planes. I most likely will do just the main hatches like the weapons bay, air brakes, canopy and nose gear doors. The rest can be penciled in during finishing old school way.

Anyway, Eric, here's your chance to do a twin 120 mm model that is actually very scale. Long story short, the plans were drawn from originals that were provided by none other than Jim Floyd himself way back in the 1990's.
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Old 03-06-2015, 03:49 PM   #64
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Re: Avro Arrow foamie EDF Conversion

Twin 120's! Too big for us I think. Most of our 90mm jets fit nicely completely assembled in our minivan and it is nice to not have to connect all the wires every time we go flying.
I do have a pair of 6s 90mm fans that are not spoken for...
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Old 03-06-2015, 05:58 PM   #65
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Re: Avro Arrow foamie EDF Conversion

I can't believe I didn't notice this thread before now...John, your work is incredible. The Arrow will always have a special place in my heart. This might just have to be my first EDF.

What kind of work is involved as far as building the airframe on the 50mm twin kit you sell for $250? Do you have the manual in an electronic format that we could read by any chance?

I have to say again, your work is awesome...I'm really glad to see another person keeping the memory of this aircraft alive!
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Old 03-06-2015, 06:50 PM   #66
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Re: Avro Arrow foamie EDF Conversion

Hi Cory,
Sorry, yes I do have it on my computer, yes I coukd email it to you, unfortunately, my computer is at home and I am in Southern California so I cannot send it to you. I'll be home near the end of this month though.

Most of the models build is on this thread and the thread regarding the pusher prop version from which this was a conversion.

I have the maiden flight posted on YouTube though, just put "Avro Arrow Foamie Edf " in the search window. The model was still in Dow Corning pink at the time, but was painted very shortly afterwards 😊
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Old 03-07-2015, 04:25 PM   #67
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Re: Avro Arrow foamie EDF Conversion

Twin 120's too big for you Eric, �� I would even lay up a special fuse for you to keep the weight down. There is a foam company in Quebec that make a very light beaded insulation, used to be able to get it at Home Depot in 2' x 8 ' sheets up to 2" thick, I would estimate it was 2/3 the wieght of white beaded foam. I would use that foam to hot wire the wings even. Plus, with the several 120 EDF units on the market, you'd have options.

Certainly you are up to a good challenge, hmmm ��

Of course, the costs would be impressive too.

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Old 09-11-2016, 10:31 AM   #68
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Re: Avro Arrow foamie EDF Conversion

Last weekend I had my first, in a long time, mishap with the Arrow, under powered bungee cord failed to get the model launched, slid along and yep, it smacked into the bungee cord stake. Caused damage to the nose section, a long rip and tear in the bottom of the fuse. So, today it's getting all fixed up, plus, might as well fix some other dings as well.

When done, should look as good as new ...... Well, at 50 feet, going 50 mph .....
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Old 09-11-2016, 10:35 AM   #69
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Re: Avro Arrow foamie EDF Conversion

Nose section damage. I think I'll toughen the nose cone area up with a layer of 1.5 oz fiberglass cloth and epoxy. I did this on the Mig-25 because of it's long slender shape, it turned out better than I had figured it would.
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Old 09-18-2016, 10:13 AM   #70
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Re: Avro Arrow foamie EDF Conversion

Having a really hard time trying to find a strong bungee cord to replace the old one that is just worn out. So, today, I'm going to design and install a set of simple fixed landing gear. Using light wieght wheels, 1/8" piano wire, some pieces of 1/8" plywood and a small servo for steerage. Might even have it ready for testing late this afternoon. 😎
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