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-   -   Jack Stafford Bird Dog (https://www.rcuniverse.com/forum/rc-scale-aircraft-169/11681341-jack-stafford-bird-dog.html)

jan brilman 08-06-2020 02:10 AM

Jack Stafford Bird Dog
 
Hi,


I was wondering: how 'good' are the Jack Stafford designs, especially the Bird Dog?

Precision Cut Kits offers a kit.

Anyone experience?

Easy/difficult to build, flying qualities, and, last but not least: is it scale?

Thanks!


jan
(Netherlands)

jan brilman 08-07-2020 02:40 AM

After some research here it appears that is used to be a very bad kit.

But, updates, new owners, re engineered, etc.etc.

No one has experience with the model as kitted now by Precision Cut Kits?

Thanks.


jan.

jan brilman 08-09-2020 07:57 AM

I am looking for so around 65", 70".

And, especially: scale!


A couple of years ago I found the drawings from H.G. Hall, and had contact with Tom Wolf.

https://www.rcgroups.com/forums/show...ssna-L-19-OE-1

He (Tom) has done quiet some research into available plans, and found that most (all?) of them had serious flaws.

So, based on the Hall drawings (the best available?), he developed plans, and built a beautiful 28% Bird Dog.

http://www.modelaviation.com/tom-wol...cott%20Loepkey.


There is a kit for a small 45" (1.45 m, 13%) from RBC-kits, which I think is pretty true to scale, but I am looking for a little bigger model . . .

https://www.rbckits.com/shop/birddog.html

I have compared the the Bob Rich model (72"!) to the Hall plans, and also found some mistakes.

https://www.google.com/search?bih=64...4dUDCAw&uact=5

But there is a build thread out there that I will study.

https://www.rcuniverse.com/forum/kit...dog-build.html

And, to come back to the first post: what is the relation between the Jack Stafford model and the Bob Rich design???

Anyway, still puzzling what I will do . . .


jan.

Lake Flyer 08-09-2020 06:09 PM

I believe Bob Rich designed it and it was published as a construction article in RCM. Jack Stafford later kitted the design. https://wolfmodels.net/AirbornePlans.html
On page 3 they have a L 19 around 67" the front end is definately not scale

jan brilman 08-10-2020 01:56 AM

Hi Lake Flyer,

Thanks, most informative.

This explains why Bob Rich shows up when looking for the Stafford kit . . .

As far as the Airborne L-19 plan is concerned: looks as if this one ticks all the boxes.

On the other hand: over the years I've spend a small fortune on drawings that disappointed me for all sorts of reasons, so . . .
Accurate computer aided drafting offers plenty of scope for detailing.
Doesn't any drawing offer scope to add more details?


Do you know more about this plan?

Of course I am going to ask Wolfmodels also . . .


jan.

Lake Flyer 08-10-2020 07:22 AM

Hi Jan, I have the Airborne L-19 plan. I do not think you would be happy with it. Everything ahead of the cockpit is wrong. The cowling is way to boxy and square. If I picked up on that I am sure there are other areas that you would find wrong. I am considering reducing the Stafford Bird Dog fuselage plan to match the Airborne plan and then tracing the Stafford plan to correct the front of the Airborne Plan. You would probably not be happy with the result but it would be close enough for me.

jan brilman 08-10-2020 07:31 AM


Originally Posted by Lake Flyer (Post 12623703)
Hi Jan, I have the Airborne L-19 plan. I do not think you would be happy with it. Everything ahead of the cockpit is wrong. The cowling is way to boxy and square. If I picked up on that I am sure there are other areas that you would find wrong. I am considering reducing the Stafford Bird Dog fuselage plan to match the Airborne plan and then tracing the Stafford plan to correct the front of the Airborne Plan. You would probably not be happy with the result but it would be close enough for me.


So, another one bites the dust . . .

Okay, thanks!


I am considering reducing the Stafford Bird Dog fuselage plan to match the Airborne plan and then tracing the Stafford plan to correct the front of the Airborne Plan.

Why not go all the way with the Bob Rich design?

Plans and construction article are available on the web . . .


jan.

Lake Flyer 08-10-2020 06:34 PM

Yes I'd thought about that. The airborne plan certainly builds lighter and requires a smaller engine. Bob Rich's plan is way closer to scale. We'll see when I get around to building one.


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