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Aug 24, 2016, 10:06 AM
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Dynam 1470mm PBY Catalina - all terrain plane

Halloa people

my first look at a Dynam plane And quite an iconic model this is.. The PBY Catalina seaplane.. Not a small foamy eighter with it's 1470mm wingspan..

Here is a link to this plane: Dynam PBY Catalina

I will be doing several video's about this plane, but let's first see what we get and what the plane looks like after assembling it

DutchRC - Dynam PBY Catalina - All terrain plane! Show & Tell (from (13 min 27 sec)

Wingspan: 1470mm / 57.8in
Length: 940mm / 37in
Flying Weight: 1300g / 45.9oz
CG (Center of Gravity): 80 - 85mm from the leading edge at the wing root
Power System: 2x BM2815A-KV1100 Brushless Outrunner motor
Electronic Speed Control: 2x 30A Brushless with T connector
Propeller / EDF: 2x 3-Blade Prop
Servos: 4x 9g standard
Landing Gear: None
Required Battery: 3S 11.1V 2200mAh 20C LiPo (required)
Required Radio: 4 Channel (required)
Ailerons: Yes
Elevator: Yes
Rudder: Yes
Flaps: No
Lights: Yes
Hinge Type: Foam
Material: EPO Foam
Skill Level: Intermediate
Build Time: 2-3 Hours
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Sep 05, 2016, 09:13 AM
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Time for a maiden flight with my Catalina then! It really is a bit underpowered inho, or maybe I should say 'scale powered'

DutchRC - Maiden Flight with Dynam's 1470mm PBY Catalina! :) (from (7 min 25 sec)
Sep 14, 2016, 09:03 AM
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Sooo.. on 3S my Catalina didn't do toooo well.. 4S then maybe?? Let's see how that worked out :$

DutchRC - Dynam PBY Catalina on 4S..... CRASH :P (11 min 35 sec)
Oct 04, 2016, 03:35 PM
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Really enjoyed your video, thank you.

I am rebuilding an older model and wanted to eliminate the rudder for field operations. The solution I chose was to cut off the factory water rudder about 5mm from the hull, and for water operations found a simple stock solution using boat parts (Aquacraft rudder kit AQUB8723 and a shaft coupler to attach the rudder to the original wire , Aquacraft motor coupler AQUB7903).

May all your landings be safe ones.
Oct 04, 2016, 04:34 PM
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Thank you sir
Ah yes.. I've had a few seaplanes in the past that had their water-rudders on the floats.. Water taxying with the stock setup is 'a bit' chelleging indeed
A bit of differential thust wouldn't work well you think?

Cheers & happy flying
Oct 04, 2016, 05:29 PM
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When you find out how to install differential thrust I'd be very interested too hear.
Oct 04, 2016, 06:29 PM
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Ah yes.. It does depend on what kind of radio you use offcourse. But I have the 2 ESC's on different channels..
After that you can offcourse mix rudder into more/less throttle on eighter one of the 2 ESC's...
Oct 05, 2016, 10:24 AM
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Sounds like a good use of the radio. Something for me to try with my DX6. Have you converted one of the engines to contra-rotation? I understand that it just requires a flip with the ESC connector plus finding one new prop? I have not flown the plane yet, but it looks like there is a lot of left hand torque to deal with on a grass takeoff?
Oct 05, 2016, 04:19 PM
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Nope.. I don't have counter ratating props on mine, but that Would indeed be advantagous
Indeed: just swap out any 2 connectors between the motor & ESC, and that motor will run the other way around
Yeps.. quite a bit of torque roll at lower speeds.....

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