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Nov 13, 2019, 03:25 AM
Tony Audsley Retired Locksmith
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Build Log

Viking EDF Sea Plane


EDF version of my Viking pusher prop .. sea plane or slide on grass ... no undercarriage needed

This one has a 100mm larger wing and a proper airfoil .. I am using a 70mm EDF although I would think a good 64mm EDF would power it OK

Unlike most EDF jets, this one has the jet blast (or EDF exhaust) directly over the the control surfaces ( rudder and elevator) so this should make for better slow fly handling and better ground and water control

So far everything seems to be going together well .. after all parts were cut out.. about 6 hours work so far

My friend Bob ( birdofplay) suggested that we try "pocketed slots" on the wings so as the slots were not visible from the underside and it worked a treat ... we use a CNC router machine to cut out the parts, but this could be done by hand with a little care and patience .. this simply means that the slots to line up the ribs only cut into the wing about half way through

Lockey
Last edited by Lockey; Nov 13, 2019 at 06:51 PM.
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Nov 13, 2019, 03:50 AM
Tony Audsley Retired Locksmith
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Specs:

Wing span: 1100 mm
Length: 1130
70mm EDF
60A ESC
2200 - 2700 4 cell battery
4 x 9g servo
2.5 sheets 6mm modeling foam
1 sheet 3mm Depron
Weight without battery .. 790 grams
Flying Weight with 2200/4s battery 1.1 kg.

Lockey
Last edited by Lockey; Nov 16, 2019 at 01:06 AM.
Nov 13, 2019, 09:35 AM
Retired CAD guy
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Have you heard about a new Flex CA ?
I found this at a Woodworking / Craft supplier in the USA ,
who normally has a reputation for being pricey.
https://www.rockler.com/quick-set-glue-2-5-oz

It's much cheaper than HK or Hobby outlets that I found.
Last edited by birdofplay; Nov 13, 2019 at 09:49 AM.
Nov 13, 2019, 06:04 PM
Tony Audsley Retired Locksmith
Lockey's Avatar
Thread OP
Quote:
Originally Posted by birdofplay
Have you heard about a new Flex CA ?
I found this at a Woodworking / Craft supplier in the USA ,
who normally has a reputation for being pricey.
https://www.rockler.com/quick-set-glue-2-5-oz

It's much cheaper than HK or Hobby outlets that I found.
Thanks for the link Bob, I have emailed them to see if they ship to Australia .. and how much .. BUT, I bet its not foam safe .. OK for 3D printed parts though

Lockey

EDIT .. Nope, they don't ship CA to Oz .. FCUK em .. thats what I say
Last edited by Lockey; Nov 13, 2019 at 06:11 PM.
Nov 13, 2019, 08:24 PM
Retired CAD guy
birdofplay's Avatar
Foam safe ? ! ?

Yikes I forgot about that - Y I K E S !

I just ordered two bottles of the stuff.

I guess time will tell just how foam safe it IS or IS NOT.

I have seen the stuff at HK, but in smaller bottles and a bit priceyer
https://hobbyking.com/en_us/insta-fl...glue-1-oz.html

The write up says no go on foam - arrrrrgggghh ! but that's the HK of this stuff.

A N D ! while I was at the HK site I saw something referred to as RUBBER CA .. WTH ?

I guess that's one more thing to look into.

IF and ONLY IF I find anyo of these glues "workable"
I get some to ya one way or another ! ;^}

BTW are ANY of teh 90 lookey looz ever going ot participate inf this discussion ?
Nov 14, 2019, 03:06 AM
Tony Audsley Retired Locksmith
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Thread OP
More build today but had to give it away for today at 40.5 degrees C it getting slightly warm in my workshop

About 5 hours work today

Lockey
Last edited by Lockey; Nov 14, 2019 at 06:00 AM.
Nov 15, 2019, 02:58 AM
Registered User
Dantiel's Avatar
niiiice it looks like spacecraft, though very reasonable airplane
Nov 16, 2019, 01:01 AM
Tony Audsley Retired Locksmith
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Thread OP
Quote:
Originally Posted by Dantiel
niiiice it looks like spacecraft, though very reasonable airplane
Thanks for your comment Dantiel

Finished the build, ready for maiden .. Weight without battery .. 790 grams add about 300 grams for 4s battery
.. about 1.1kg

Lockey
Nov 16, 2019, 11:10 AM
When cows fly!
Spiffy! Can't wait for maiden
Nov 16, 2019, 06:21 PM
Tony Audsley Retired Locksmith
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Thread OP
Quote:
Originally Posted by dpalmer146
Spiffy! Can't wait for maiden
Hey David, how they hanging I will try and do a right turn mate .. just for you

Lockey
Nov 16, 2019, 08:05 PM
Retired CAD guy
birdofplay's Avatar
Right on !
Nov 16, 2019, 10:38 PM
Tony Audsley Retired Locksmith
Lockey's Avatar
Thread OP
Maidened the Viking EDF this morning .. MAAAAAAN does this thing fly nice .. like its on rails

Even nicer than the pusher prop version I find that quite unusual .. most of the other planes I have built as a pusher then converted to EDF seemed to be always a bit sluggish and not as responsive as the pusher prop ones .. WOW .. this one beats the pants off the pusher

Just a short flight (as I tend to do with my maidens) mainly because I cant keep my thumbs from shaking

I flew them both this morning .. EDF maiden first followed by a flight of the prop version

Sorry David, forgot the right hand turn on the EDF .. BUT .. I did remember on the Pusher Prop .. sorry guys .. just a "in" joke between David (dpalmer146) and myself

Now to put some colour trim on it

Lockey

Viking EDF Maiden (2 min 48 sec)


Viking Pusher Prop (3 min 42 sec)
Last edited by Lockey; Nov 16, 2019 at 11:00 PM.
Nov 17, 2019, 03:43 PM
Registered User
I see you haven't lost you're touch. One page build and a Good EDF to boot. Nice maiden!!!

Aaron
Nov 17, 2019, 05:28 PM
Tony Audsley Retired Locksmith
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Thread OP
Quote:
Originally Posted by ksqm
I see you haven't lost you're touch. One page build and a Good EDF to boot. Nice maiden!!!

Aaron
Good to see you mate, what you been up to .. thanks for your comments

Lockey


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