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Jul 09, 2019, 09:23 AM
Retired CAD guy
birdofplay's Avatar
That's a nice size and great price too.

Add shipping across the pond <-> and it becomes untenable.

Meaning No Depron in USA and no MPF in EU.

Regardless, MPF is my only choice here in the USA.

Still have not heard back from Steve.
I would hate to see this model become unavailable as a Kit.

Still I do not expect much demand in our changing model environment.
Noting that this forums' participation rate has declined significantly of late.

So , just to keep it alive,
I may make some customization's and just start cutting my version.
I am thinking ...

1. a Split , tab and slot aligned Wing - for smaller shipping box accommodation.
2. Slot and tab aligned Fuse - Sides , Top and Bottom.
3. Slot and tab aligned Pod parts

I am thinking that I could cut Foam Only Parts Sets for ~$30 + S&H
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Jul 09, 2019, 11:05 AM
Youtube channel : solentlifeuk
solentlife's Avatar
The size is great as most Depron builds fall into that 1250 size ..

I have lots of plans that show split parts because of the smaller 'Aero Grade' size ... - with my Depron ... I can cut as one piece.
Jul 09, 2019, 12:15 PM
65 years of RC flying
Daedalus66's Avatar
Quote:
Originally Posted by birdofplay
That's a nice size and great price too.

Add shipping across the pond <-> and it becomes untenable.

Meaning No Depron in USA and no MPF in EU.

Regardless, MPF is my only choice here in the USA.

Still have not heard back from Steve.
I would hate to see this model become unavailable as a Kit.

Still I do not expect much demand in our changing model environment.
Noting that this forums' participation rate has declined significantly of late.

So , just to keep it alive,
I may make some customization's and just start cutting my version.
I am thinking ...

1. a Split , tab and slot aligned Wing - for smaller shipping box accommodation.
2. Slot and tab aligned Fuse - Sides , Top and Bottom.
3. Slot and tab aligned Pod parts

I am thinking that I could cut Foam Only Parts Sets for ~$30 + S&H


If you do decide to go ahead, put me down for one. Or anything else I can do to help maintain the availability of the Polaris family. Need a beta tester?
Nigel (the other one)
Jul 09, 2019, 01:01 PM
Retired CAD guy
birdofplay's Avatar
I am working on the Tabs and slots just now.

It has been quite a few years since I was a Polaris owner and flier.
Like maybe 10 !

Once I am happy with my modifications I may need a Beta guy.
then again I will need another one for myself.

BTW,
Have you seen Lockey's Vixen ?
It's a Similar design with a less fragile Tail section.

LOCKEY is the designer and RCG member from Perth.

Vixen (2 min 21 sec)
Jul 09, 2019, 06:20 PM
Registered User
Less fragile but more complex.

Just some BBQ skewers as braces would work on the Polaris but I never needed any. I do want to try one without a stab and just fly it as a delta wing.
Jul 09, 2019, 08:36 PM
Retired CAD guy
birdofplay's Avatar
It might work.
But without the prop blast across the stab you might have to
keep up your speed to have effectiveness.

That's what is great about Foamys and scratch building.
You can inexpensively try out anything you can dream up
Jul 09, 2019, 09:58 PM
Registered User
A lot of the north star guys used to do it. Double the elevon area and raise the step. That made it possible to have a taller rudder too. The rudder on the north stars are almost completely ineffective on the water or in the air. A lot of them preferred that mod but I never did it to mine.
Jul 10, 2019, 10:03 AM
Registered User
Quote:
Originally Posted by birdofplay
That's a nice size and great price too.

Add shipping across the pond <-> and it becomes untenable.

Meaning No Depron in USA and no MPF in EU.

Regardless, MPF is my only choice here in the USA.

Still have not heard back from Steve.
I would hate to see this model become unavailable as a Kit.

Still I do not expect much demand in our changing model environment.
Noting that this forums' participation rate has declined significantly of late.

So , just to keep it alive,
I may make some customization's and just start cutting my version.
I am thinking ...

1. a Split , tab and slot aligned Wing - for smaller shipping box accommodation.
2. Slot and tab aligned Fuse - Sides , Top and Bottom.
3. Slot and tab aligned Pod parts

I am thinking that I could cut Foam Only Parts Sets for ~$30 + S&H
I would definitely be interested in buying one or more of these.
Jul 10, 2019, 10:43 AM
Kit Manufacturer
coreman's Avatar
Has anyone tried making a Polaris out of the brown waterproof FliteTest foam board? How was the weight?
Jul 10, 2019, 11:17 AM
Youtube channel : solentlifeuk
solentlife's Avatar
Just for info :

My first Polaris build was made up of laminated Depron for the wing ... 2x 6mm depron with epoxy laminating resin.
The weight was significantly higher than designed ... but flew superb.

The wing area is sufficient to allow a wide range in weight and still fly well.

My present Polaris (#6) is painted ... pal of mine has his completely packing taped and weighs more ... we can fly alongside each other literally as if they were the same model.
Jul 10, 2019, 11:57 AM
Registered User
Quote:
Originally Posted by FlattyFlier
I do want to try one without a stab and just fly it as a delta wing.
Laddie did that. It's called the Arrow...
Jul 11, 2019, 05:35 PM
Retired CAD guy
birdofplay's Avatar
Regardless of whether I am allowed to produce kits of this Polaris modification,
I am introducing my enhancements and assembly procedure at this time.

Of course I am doing this to test or PROOF my work , AKA Prototype.

The investment of time is mine alone.
I would have made these changes prior to making another Polaris for myself.

Once I have my modifications proven I may be able to offer Foam Only Cutting sets.
My current estimation is ~$30 + S&H

So far the wing has gone together as planned and the fuse appears to be nice and straight.

I'm open to any comments, suggestions, or additional modifications.

Stay tuned as the build progresses.

Bob @ Hoosier Cutout Service

apologies for pic orientation.
they all looked OK in my directory when I resized them to 1024x768
Last edited by birdofplay; Jul 13, 2019 at 12:12 PM.
Jul 12, 2019, 03:08 AM
Youtube channel : solentlifeuk
solentlife's Avatar
Each to their own "birdofplay" ... wish you luck.

IMHO - too many tabs ... and I would have split the wing transverse not longitudinally to preserve as much strength as possible.
But of course I'm lucky - I have Depron sheet 1250mm x 800mm so my wings are one piece.
Jul 12, 2019, 06:37 AM
Retired CAD guy
birdofplay's Avatar
Thanks for input.

The wing split is intended to accommodate my current standardized packaging.
A 90 deg change to that split would be acceptable.

While A one piece wing is optimal and producible from MPF sheeting it would
make shipping more cumbersome.
With 2019 shipping costs being what they are ,
certain compromises must be considered to reduce overall costs.

My thinking was to ...
1. put the Wing Split INSIDE the fuse and out of sight.
2. fit in current packaging
3. accommodate the original designers CF sparing scheme
4. glued joints tend to be stronger than continuous material IMHO.

Re fuse alignment modifications:
I have found that tab&slot assemblies tend to droop between tabs unless preformed.
Thus I choose to employ the uniform and higher number of tab&slots.
Jul 12, 2019, 06:47 AM
Youtube channel : solentlifeuk
solentlife's Avatar
Please don't misunderstand me ... we all have our ways of accomplishing things.

I also fully understand shipping considerations of size and shape.

I am a builder who often takes a 3 view and creates from that ... a Cut by Eye scratcher !

I agree that long distance between tabs can lead to distortion - but also that being a hand cutter - tabs and slots are often not 'tight' allowing weakness to form. I like the thin 'runner' along the inside of the glue line - so the piece glued is sitting alongside that plus the tabs to create the shape.
The Polaris uses this 'runner; idea not only to keep the curved shape - but also to allow any rounding of 'corners'.

Glued joints ? That of course depends on the glue used. Many people are using Contact form of foam glue and they tend to be rubbery or limited life before starting to breakdown. For structural - I prefer PU Glue (generic Gorilla Glue) - this of course is designed for all weather use and is a more permanent solution.

Basically - I took up your invitation to comment, not to amend your good ideas - but just to illustrate how I and maybe some other may look at this building.


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