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Old Jun 12, 2015, 12:53 PM
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Build Log
Judi Sea Jet 32" span

This is a build of a Judi Sea Jet 32" span.
It is a result of Rusty-Gunn's initial development
then Jurgen added some nice touches in his 22" span version.
I have since taken that and scaled it up, added some more structure and
tabs and slots for easier assembly.
A few pix are on the original thread
http://www.rcgroups.com/forums/showthread.php?t=2321902
pix here
http://www.rcgroups.com/forums/showp...&postcount=108

Flying vid here
Judi Sea Jet 32" wing span (2 min 14 sec)

and here
Judi Sea Jet plane 32" span (0 min 0 sec)


IMHO This is just abut the funnest plane jn recent times.
It's smaller than my Polaris and more robust too.
It flies off ground surfaces as well as water.
Easy handling , smooth take off's and High roll rates if you program it that way.
Ground handling is quite acceptable with just the Rudder.
Note: I fly off my own field and keep the grass/weeds cut very close.
I have to with all the Buckhorn weeds - I call em Whip weeds.

I had a crash just two days ago and suffered minimal damage.
A servo decided to go south about 10 feet over the ground on approach.
It looked like a glitch as it happened. The servo was the only thing to blame after inspection.

I was back up and flying after regluing the Fin back in place.

I am using a 40 amp ESC because it was laying unused in the drawer.
Motor currently being used is
http://api.viglink.com/api/click?for...arehouse_.html

I'll get the rest of the specs up soon.

Oh, and there is an even larger 46" span version.
Please visit the original thread for vids of it flying anf specs.
http://www.rcgroups.com/forums/showthread.php?t=2321902

Free pdf Plans are here
http://www.rcgroups.com/forums/showp...2&postcount=82

If you don't have time to cut out your own, I offer foam only kits here :
http://www.hoosiercutoutservice.com/planes/jurgen.htm
It's just the foam parts. All I do is cut out parts for busy builders, no other commercialization, thank you.

Best

Bob
Hoosier Cutout Service
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Old Jun 12, 2015, 12:58 PM
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Pic one show my usual glue choices.

That long extendable Knife is going to be very useful later on.

The CF spar is cut to fit in the curved channel but SAVE the rest for
a secondary spar shown a bit later.

This cutting was done with the WRONG bit.
It was supposed to be done with a 1/16" dia bit but I accidentally used a 1/8" bit
so tabs and slots are in need of trim before assy.
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Old Jun 12, 2015, 01:03 PM
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Here is wher eI decided to add that unused portion of the CF spar for a little more robustness.

I used mostly that Bob Smith Foam glue but when it's easily trimmed off of will be hidden inside
I also like the White Gorilla glue.
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Old Jun 12, 2015, 01:07 PM
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As you can see , things move along pretty quickly.
especialy if you are using fast cure glues.
However I stay away from CA even the foam safe stuff.
and I never liked the Hot Melt types because I am a Klutz
with a glue gun in my hands. And I hate all the strings .

The bottom front plate is over sized as in Jurgens 22" span plans.
So I just trim off the extra with that extended blade knife.

For sides and other bent parts like the bottom herer, I place Packing tape over the
whole foam surface on the OUT SIDE.
Then Roll the foam to fit over a round object
Could be a rolling pin, large dowel or similar.
Be patient and just work it until you are satisfied.

Masking tape will hold it down if your a little shy of the mark ;-}
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Old Jun 12, 2015, 01:12 PM
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This velcro is what I use for almost all my planes. Foam or Wood.
I get it ar Hodepot, Lowes or Menards.
It has a very sticky backing and stays put in almost all instances.
The red box velcro from 3 is my next choice.

I put the sutff on the inside of the entire nose section.
I mount the ESC on one side wall the RX on the opposite side wall and the
Lipo pak in the middle on the floor.
Servos go just behind F1 and it has always balanced and flow just fine for me.

On both the 46 and 32" span I used simple Taped Hinges on the elevons and have had no problems.

EDIT:
Additional pix and captions added Sat AM.

even More L8r

Best

Bob
Hoosier Cutout Service
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Old Jun 12, 2015, 02:56 PM
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Old Jun 12, 2015, 03:43 PM
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Welcome aboard !

This is my 3rd build on the larger Judi's, one 46 and two 32'.

Today I received a bunch of props et al from HK .
I hope to discover a better prop (,hopefully a 3 blade, for the 32"

We'll have to see if the Huny Do's pile up this weekend.
If not I may be able to get back to the build.

L8r

Bob
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Old Jun 12, 2015, 03:49 PM
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Old Jun 12, 2015, 03:59 PM
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HE HE, I just realized, while reviewing what I've put up this afternoon,
that I FORGOT to instal the aft former, F3 - Oh well too late now !

Just shows how going too fast can be problematic.

I think I'm going to blame it on - A senior moment ! ;>}
yeah ... that's it !

Have a good weekend !
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Old Jun 12, 2015, 05:47 PM
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Will be watching!
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Old Jun 12, 2015, 06:31 PM
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There are many Lurkers here on the www
but few participants and contributors.

C'mon in ... the water is warm


This is sortof new experience for me.
I haven't done a build in a long time.
Mostly because I have been doing relatively completed ready to go designs.
Then I just offer them up for consumption.

So, it occurred to me that my build and flying style might be a bit unusual to a lot of folks.
Some guys can build a whole foamy in a day or less.

With foamys I just don't take them as seriously as I used to with the balsa/ply/wood models of earlier times.

Foamys require so much less input, build time, expense etc ,
that I don't consider them as "precious" as the earlier machines.

Yet they provide the same Release and Satisfaction .

I know some folks go to unusual lengths to make their foamys look perfect and conceal their
true and fragile nature.

While I, on the other hand, tend to just assemble , fly and move on the next experience or design.

ok ok ok yada yada blah blah blah , who needs a philosophical explanation when modeling.

You're Probably right.

This summary is probably more fitting ...

If it aint fun DON'T DO IT !

AND this IS fun , at least for me :-)

And, I'm willing to share .
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Old Jun 12, 2015, 10:14 PM
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im dreaming open cockpit, short windscreen, pan and tilt FPV and flown with my Dominators and Trinity headtracker

about the 48" size got a duck pond about 1 mile by road thats perfect for this

this design is a natural for it
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Old Jun 12, 2015, 11:41 PM
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Very nice build thread Bob! Thanks for all the pictures.

Dave-
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Old Jun 13, 2015, 08:08 AM
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I have an FPV set of equipment but I just can never get a secure feeling with it.
I have a 600mw TX and 700 line cam with a brand new Headplay 1280 headset( goggles )
And I have circular polarized antennas. But it's still just not right.

I am confused as to WHY I need a head tracker gimbal set up.?
I seems to me to be an added bit of complexity .
Whereas, a quad copter has stability and merely needs to be directed.
Add OSD and I may never get to use my FPV stuff ... aaaargh !!!

My dream is to fly over to the neighbors pond , do a T&G and return to my field.
You can see the pond in the vid below.

Regardless:
Did you see the vid FROM THE COCKPIT of the 46" span version ?
It's a Mobius mounted above the cockpit looking slightly downward.
I set the Mobius to narrow view to eliminate all the goofy wide angle lens effects.

Judi Sea Jet Cockpit View (3 min 26 sec)
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Old Jun 13, 2015, 09:01 AM
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Dawn Patrol vid soon to be visible
http://youtu.be/OHz8vbVS1Kg

Like maybe a hour from now - or around 11 am EST
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