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Old 02-29-2016, 08:00 AM   #151
Dutkoski
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Re: Re-starting Avro Arrow build


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Not too sure to be honest, now that pretty much everyone who is interested wants composite wings, so i will need to make 8 more moulds once I get back to Canada. I will endeavour to get the prototpye built by mid-July. That being said, I will make fiberglass parts from tge moulds that are already made. The first two, after the prototype, are already spoken for, so ones for sale will be after that.
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Old 03-01-2016, 10:37 AM   #152
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Re: Re-starting Avro Arrow build

Ever had one of those days where things just go wrong. I guess today is my day. The second coat of gelcoat crinkled the first coat while curing over night. So, with a small 1" putty knife, removed the gelcoat. It was like peeling a 77" long hard boiled egg. The gelcoat came off in fairly large patches. The plus side, it did not stick anywhere and the panel lines were nice and crisp. Not the way I wanted to find out, but it was nice to see. Fortunately for me, no damage to the plug.

Unfortunately, this ate up all the time I had scheduled this morning for the project, so the detailed clean up will have to wait til this evening. Then, wax and PVA again.
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Old 03-03-2016, 01:49 PM   #153
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Re: Re-starting Avro Arrow build

Well double darn, looks like my gelcoat had gone bad, the first coat when on and cured pretty good, but when I applied the second coat, I could literally see the crinkling taking place. So, looks like I'll be peeling it off tomorrow. Ordered a gallon from L.A., being shipped out today, should have it in a day or so.

The up side, the master plug is certainly getting waxed alot, so nothing should be sticking to it at all. You just have to love these delays, huh.
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Old 03-03-2016, 05:20 PM   #154
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Re: Re-starting Avro Arrow build

Hang in there John (as we know you will )- this is a great project that's going to result in awesomeness.
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Old 03-03-2016, 06:45 PM   #155
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Re: Re-starting Avro Arrow build

Never give up, i waited until,the shitty gelcoat was dry but still a little soft. Came off in good size pieces. So tonight I will clean up the plug,magain, and prep it. I ordered a gallon of gelcoat from a company in L.A., next day service, so this weekend, I should be ready to slop on the resin.
The upside is, now I will have enough gelcoat to mould up the vertical fin and rudder.
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Old 03-10-2016, 10:00 PM   #156
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Composite wings

I was planning on building a twin 70 mm edf Avro Arrow this winter but I got onto another project instead . I am still trying to figure out how to build the wings. I've been keeping an eye on the 2/3 rd scale arrow build in Calgary to see how they're building their wings.They're building carbon fiber composite winglets. Here's some pictures I took of the progress. Looking forward to see end result of that project.
http://www.avromuseum.com/photos5.html
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Old 03-11-2016, 06:53 AM   #157
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Re: Re-starting Avro Arrow build

Hi Larry;

My Avro Arrow will have aluminum spars to suport both wings and gear mounting retracts based on the full scale wings.
My wings are scale so they are thin.
I will do some testing once the scale gears are completed on CAD drawings.
When gears are that long, you need a lot of spar support.
I`ll keep everyone informed. No Pic yet

I am waiting to see the results of Mr. John`s Avrow Arrow
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Old 03-11-2016, 06:53 AM   #158
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Re: Re-starting Avro Arrow build

Very cool Larry, thanks for posting the photos and the link. I can just imagine the damn maiden flight jitters that will happen! I sure hope they can complete and successfully fly the project.
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Old 03-11-2016, 08:54 AM   #159
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Re: Re-starting Avro Arrow build

Anyone willing to sell or know someone who has a low time turbine to sell.
20lb thrust range.
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Old 03-11-2016, 09:55 AM   #160
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Re: Re-starting Avro Arrow build

The main landing gear has been a design pain in my side ever since I started the project. I've had lots of outside ideas, which is great. Always good to have help. I want to keep the design in the practicle world, so robust is more important that ultra scale. But, I want to be true to the original design features as possible. I want the double wheel setup and have it articulate like the real one. Plus, it should look like the real one. Then there is the real life side of the coin, the manufacturing costs. The more detailed, the more it costs. Look at BVM retracts and stut systems for their sport jets, very expensive but they work beautifully. I have approached a friend whose hobby is machine work, he has a well equipment machine shop in his basement. I told him I would want a minimum quantity of 12 sets, that'll be 12 complet sets of strutts and only the main gear retract units, the nose gear retract units will be off the shelf items.

I'm leaning more towards electric powered units than the air hydraulic at this point in time. But not with the circuit boards on the main gear to keep it simply. There will be micro switches limiting the travel.
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