Possible to construct a Driggs Dart monoplane out of aluminum tubing?

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AlistairL

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Splicing would offer much help and am happy to hear it is doable.This offers more help money-wise due to the cost of shipping and such.Working with steel is new to me so figuring out how to form a shape (ex. the forward fuselage)on the material would need further assistance.The motor mount would probably need altering in order to compensate for a VW engine.As Dew777 mentioned the specifications of the Driggs Dart is just close to part 103.
 

FritzW

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I just googled "aircraft welding tube splice" ...needless to say there are countless "how to's", videos and web pages that will get you started. But I still think your best bet is to talk to some of your local EAA chapters and find a local "welding Yoda" to get you going.

P.S. there are ~30 EAA chapters in Ohio!
 

AlistairL

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I just googled "aircraft welding tube splice" ...needless to say there are countless "how to's", videos and web pages that will get you started. But I still think your best bet is to talk to some of your local EAA chapters and find a local "welding Yoda" to get you going.

P.S. there are ~30 EAA chapters in Ohio!
Will do just that.Should be an interesting experience and project with the right help.Design wise the Driggs Dart appears quite straight forward.The splicing I will research more into as it will help will constructing the fuselage.
 

dew777

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I certainly encourage you in your planned project ~ keep us posted as it develops :). I'd like to know if a Dart can be successfully done as a Part 103.

Like Boku already mentioned, consider the "need" for splices/joints:
In general, fewer is probably better, since each splice adds a non-trivial amount of extra weight and extra fasteners.
 

AlistairL

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I certainly encourage you in your planned project ~ keep us posted as it develops :). I'd like to know if a Dart can be successfully done as a Part 103.

Like Boku already mentioned, consider the "need" for splices/joints:
Will certainly do and I too am curious on if it is capable of being Part 103.One thing though is the plans seem to neglect showing diagrams of the rudder and horizontal stabilizer.Is there someplace to find more complete plans?
 

Tiger Tim

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Will certainly do and I too am curious on if it is capable of being Part 103.One thing though is the plans seem to neglect showing diagrams of the rudder and horizontal stabilizer.Is there someplace to find more complete plans?
Keep an eye on the online book sources for an original copy of the FGM. When the EAA reprinted them they clipped off between 20-50% of the articles.
 

AlistairL

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I figured as much.I'll keep looking for the original articles.I assume it is due to infringement matters.I'm hoping there's enough information and details in the link on my original post to at least work the basic fuselage airframe.
 

dew777

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Don't use this very seriously at all ~ but it might be interesting for the general idea of what the tail (rudder and horizontal stabilizer). Again, please note that this image is for a MODEL. . .

Driggs_Dart_Model.jpg
 

Tiger Tim

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Oh, and maybe before anything rip some scrap lumber down into 1x1 or whatever and build a full-scale cockpit for the Dart. I saw one in a museum once and to call it tiny would be an understatement.
 

AlistairL

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Thank you for image of model as it does give a good impression on the framework of those parts.As you say though not to take it seriously but it would make a nice free-flight model.As for the cockpit I will try to see in replicating one.Overall I think it will probably be a close fit as I am little over 5 feet.I am surprised to hear that there is one on display as I couldn't find any images of examples today.I will eventually contact a local EAA chapter on the matter of construction.I am just wondering how much tubing to order for the fuselage.
 

AlistairL

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AlistairL, I REALLY hope you succeed with the the U/L-103 build of the Driggs Dart. If I were considering doing that I'd work off of the available photos and probably do a modified build of the J3-kitten tail. Those plans are available here: http://timdonk.com/wp-content/uploads/2015/12/J-3-Kitten.pdf
Thank you for your encouragement.I am eager to get started on the Dart and see to it on getting the fuselage started.It would be of worth to form a modified rudder and stabilizer from those plans and thank you for that idea.I guess it wouldn't hurt to modify the wing to be able to be in parts for easier storage.It a fairly obscure machine overall.
 

dew777

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AlistairL, would you be willing to do alot of photo-documentation as you do your Driggs Dart build and post them here? What I'm thinking is that with enough information maybe it would be possible for someone to maybe take your pictures and experiences and draw some up-to-date design diagrams for the Dart. . .
 

AlistairL

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AlistairL, would you be willing to do alot of photo-documentation as you do your Driggs Dart build and post them here? What I'm thinking is that with enough information maybe it would be possible for someone to maybe take your pictures and experiences and draw some up-to-date design diagrams for the Dart. . .
Most certainly will.It was my intention to do so in order to gain a better perspective.I say the fuselage will start sometime early next year once I get things ready.What I would like to do is to buy tubing in 8 feet lengths in order to cut cost of shipping.I will then set them in proper lengths and splice them together.
 

FritzW

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I'm building a triangular fuselage similar to what your doing and I also ordered all my tubing in 8' lengths. There are some pictures of splicing the longerons together and setting them in the jig on my build log.

P.S. you absolutely don't need a jig like the one in the photos :whistle: ...a simple building table and some wooden blocks work great.
 

AlistairL

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After some contemplation I've decided that perhaps that it would be worth a try on constructing the Driggs with aluminum tubing. The goal as mentioned above is to see if that the craft will be able to meet within Part 103 requirements. The aluminum would hopefully shed enough weight to be lighter and easier to construct. I understand that the original had plywood covered wings so I am not sure whether to go with such or switch to fabric for ease. Other than that the landing gear will be made from plans out of the steel tubing since it might be best to stick with that. To FritzW I am glad that a less complicated to make a jig for fuselage wont be necessary and instead wood block on table method will be done. I'm hoping by spring will be the start with fuselage. Anymore advice from here is welcomed.
 

AlistairL

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Will do and thanks! I'm in the southern half of the state but hope to make some sort of contact. Very good overall that this would be of his interest.
 
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