Dynam PBY Catalina Aileron Differential

Follow up with the Dynam PBY Catalina. Improving performance with aileron differential.
CG 65mm
Flying weight 1440g with 4S 3000 Lipo
FrSky X8R receiver, Taranis Q X7 radio.
PBY Catalina from Hobby Station NZ - hobbystation.c...
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[@Videolinquency]

Lovely model. I chased one of the real ones on a moped in the seventies; the Norwegian government used one as a forest fire bomber, and I chased it to the water pickup point 20 miles from the fire, just for the joy of getting dripped on. Interestingly, the fire site was later used to build an an R/C field where I taught myself to fly Kyoshos in the eighties, and an airfield where I kept my own C210 in the nineties. Thanks for the flight down memory lane! But the real one didn't quite measure up to your model in looks. It was a drab greyish white, slightly blackened by soot. And so was I, after that chase ...

[@AndrewNewton]

Great story thanks Henning

[@dcsmith5839]

Really enjoy the way you tweak an ill handling craft,and end up with the results you desire. I know it's not always easy,but as someone else said,in the end you're the master.

[@fpvlive]

Differential thrust could also helps a lot with turns

[@Ouch.]

You are the first person who has explained "adverse yaw" in a way I could easily understand. Thank you! I get it now.

[@AndrewNewton]

Excellent, glad it helped Kieth

[@archivist17]

When I built the Airfix model of the Cat', I wondered whether the short fuse and small rudder in impeded airflow might make for difficulties. Glad you've got yours flying how you want it.

[@GroundControlRC]

Very nice tutorial and flight demonstration on setting up aileron differential. I've only had to use aileron differential on my Volantex P51D 750mm to get much better roll authority. I had to do just the opposite but I suppose for roll you have more air pressure at the bottom than on the top. Thanks for the info and I'll see you in the Air!

[@Johan-ex5yj]

You are the RC- Master! 👍 You can make anything fly properly. Well done, Mate! 😀

[@AndrewNewton]

Thanks 👍

[@adamkelly6264]

hands down my favourite aircraft of all time. Been wanting to make the 3D printed Catalina for ages and this has pushed me over the edge! Looks like it might be a good candidate for a kopilot too.

[@AndrewNewton]

It's a classic, maybe Kopilot if I was going to FPV

[@julianhumphrey4843]

that is flying very nice now, well done sir

[@AndrewNewton]

Thank you kindly Sir Julian

[@btbplanevids]

You can do the differential mechanically by just angling the servo arms forward a spline or two at neutral (and unscrewing the clevises to centre the ailerons again). The advantage is you're then using the full physical servo throw (as Barry Cole mentioned), and you don't need to have each aileron on a separate channel. Totally agree on the counter-rotating props btw - it's a fad that manufacturers seem to have latched on to. On a twin the motor/prop torque is split between the two motors and doesn't act along the plane's roll axis anyway, so you just don't get the same type of torque reaction that you do with a single-engined model.

[@AndrewNewton]

Well said. Now I need to make the video that demonstrates it.

[@1970savage]

Great vid and i learnt a few things , everyday is a school day ✌️

[@AndrewNewton]

Never stop learning.

[@EnglishTurbines]

I always set the servo arms at an angle to get differential....Then you can fine tune it using the end points....

[@Helmut-RobertSchuster]

nice

[@teamblacksheep-]

Nice video

[@prep0wer]

It's maybe a fun idea to use the wing floats for air brakes. Lower the right float to make a turn to the right.

[@prep0wer]

Also add a swayable torsion axle to have real landing wheels.

[@AndrewNewton]

Ha radical ideas

[@prep0wer]

@@AndrewNewton I am sure you know this channel (no Catalina though): kzbin.info/www/bejne/oWSqlWuufa-DotE

[@kjenkin53]

Aileron diff certainly tamed her, as I expected. Can you adjust rudder mixing amount, using a rotary dial. Enjoy learning about open Tx, but just reinforces how much easier my brand is to program. Pity it is way more expensive! Lol

[@AndrewNewton]

Yes I have done a video on variable rudder mix on a knob

[@NOXFPV]

Boy that's a big one.

[@grumpyjohntxredneckrc6346]

Very Nice Mate! Thanks

[@AndrewNewton]

Any time!

[@reefer2917]

Haha, you like a bit of wear and tare on your models, you'd love my collection then! :-P cruising at 6amps with a twin motor plane...your very brave Andrew! have you thought of doing a review of the Devil king banggood model,? mines turned up with all the wooden bits missing, they gave me half my $$'s back Im happy :-D great vid, nice model, 👍👍

[@AndrewNewton]

Ah yes, rough is good. Haven't noticed the Devil King

[@reefer2917]

@@AndrewNewton Devil king is very solid foam high wing 1mtr wingspan, I got mine on special? $50, I couldn't resist :-D

[@archivist17]

Andrew: Slightly OT, but i note you store your planes hung from the ceiling. Could you talk us through how you've suspended them and avoided damage to the tail?

[@AndrewNewton]

I make a wide PVC hook that hooks over the wing leading edge. The line just passes over the tail and around the fuselage so it hangs

[@jameslamb4573]

Nice job! Did the prop come off in the air? If so, how were the flying/falling characteristics with just one motor?

[@AndrewNewton]

On the ground luckily, but it's easy enough to test one motor cut out in the air. I'll do that just for you James.

[@dalerbsr.5061]

Oooops, I just left a comment about this topic on your other video... lol

[@AndrewNewton]

Clever

[@barrycole8378]

So now you need to adjust the mechanics of the ailerons so that you use full servo movement to get the up you want and the down you want. maybe go for a bit more up than you have now.

[@AndrewNewton]

Exactly, now I know it works

[@barrycole8378]

@@AndrewNewton Hope you will show how you did it, on the next video. You need to educate the masses..

[@Why-ct6kz]

2024 after wanting a pby for long time id think it best i pass on that model and scratch build my own , it seems to have way to many issues and isnt very enjoyable to fly at all by the look of it .

[@AndrewNewton]

You can get it flying well but it requires all the mixing tricks

[@makewithmegma]

Can u make video on full 3d printed plane pls, if u want👍

[@AndrewNewton]

They look good but too delicate for normal use. Not really interested in that method of making planes.

[@makewithmegma]

@@AndrewNewton it's ok, i can understand👍

[@mikegriffiths7487]

Yes, they look fantastic but are very brittle; so a heavy landing that would be fixable for a foamy or balsa plane will result in a thousand pieces of plastic. I’ve done it myself and seen others. I do have a Spitfire that I’m going to try covering with glass fibre/resin to see whether it makes it sufficiently robust for flying. Great series of videos on the Catalina Andrew. Just waiting for the postman to bring mine, which is why I’m checking out your advice now.

[@JamesHurd]

Stick the Binery fuse on it..

[@AndrewNewton]

A radical idea!