Oodalally

[Rob Tothill]

Thanks for your kind comments Peter and Terry.

I'm sure you'll love yours when it's finished Terry. It's a pleasure to fly.

[Richard scarborough]

Same model, just 50% larger. Small model has well over 100 flights now, still going strong!

[Peter Miller]

OOOOOH! Nice! What are you going to power it with?

Looking forward to seeing the finished model

[Richard scarborough]

Hi Peter, Power will be an electric set up, somewhere around 2500 W should do the job. The model as it is at the moment weighs 1.8 Kg, it will be interesting to see what the flying weight ends up at. If it flies as well as the little one I will be very happy!

Edited By Richard scarborough on 15/12/2014 08:33:59

[Peter Miller]

I am glad that you like the original so much.

I will look forward to seeing the finished model and hearing how she flies.

[D for Donald]

Love the big version Richard and looks expertly built. I've enlarged a Colin Usher plan to build a large version of a model and very satisfying it is too. I would have to put an IC engine in it however - maybe a 120 4 stroke!!

[Former Member]

[This posting has been removed]

[Richard scarborough]

Almost done!

[Peter Miller]

Nice! Looking forward to the test flight reports.

[Richard scarborough]

Just had a very successful maiden flight. Flies a lot like the smaller model, just lots better!

10s lipo, 2940 watts, 18 x 8 prop, auw 6 Kg. Takes off happily at half throttle. Full power is fun! Very happy with this, flying photos to follow.

[Redex]

Hi Richard, great model really nice.

For the power train can you say what motor you are using and for the 10S how it is setup e.g. 2*5S in series.

Many thanks

[Peter Miller]

Great to hear that.

It was one of my favourite models until an aileron horn failed at the wrong moment.

[Richard scarborough]

Hi Redex, I use two 5s batteries in series. 5000 mah. The motor is a Turnigy sk3 6364 - 245 kv, esc is Turnigy Dlux 120 amp.

[Shane Sunday]

OOoooooooooh. I like that big model. These are so much fun I bet the larger one is even more fun to fly. I had mine out yesterday and had such a great time. I'm still geeking out today. I've finally gotten comfortable with it. I've only had a hand full of flights but now it will most likely come to the field with me. Truely feel everyone should build one of these.

[Peter Miller]

Glad you like it so much. I was really fond of mine and used the wing design on other designs.

[D for Donald]

I'm thinking about retiring my Ood after it's 4th crash. I find it very tip stall prone and impossible to fly slowly for landing without it dropping out of the sky. Any suggestions?

[Denis Watkins]

No disrespect Don, but C of G is crucial, as always, and are their any gaps in the control surfaces, especially the elevator?, these want taping up

Edited By Denis Watkins on 10/08/2016 07:46:21

[Peter Miller]

I find that strange. Mine was most forgiving and others have not complained about the slow speed handling. Mine never showed any tp stalling tendancy.

Just where is your CG.?

Edited By Peter Miller on 10/08/2016 08:08:58

[D for Donald]

Hi all, no disrespect taken but to explain I've been modelling for over 50 years (oh dear!) and the surfaces and C of G are on the button per the plan. I have noticed particularly that if the engine cuts in flight the tip stalling is particularly violent if the nose is not kept well and truly down. We have a limited strip as to length and width so we have to come in accurately and not at excessive speed if we are not to overshoot. If we had a large mown field the speed wouldn't matter too much. The glide is not good.

[Denis Watkins]

Ditto on the 50 years Don, you would think that we had learned by now ! I am a small model man and they can play up on us. Lateral balance too is a consideration, but your strip, being an aircraft carrier, perhaps puts the pressure on too. These model types, I do fly in on to the wheels, then cut the motor, I dont even try a glide, but I do practice at height to detect a low speed wing over.

C of G may be on the plan button, but it does sound like your build is "leaning back" a little. Weight is our enemy, and adds speed as you know, but I dont recommend we mess with wing incidence packing at this stage as you sound an accurate builder.

Add weight, just to try, way forward, up nose as far as you can get it, while watching the balance point is nearby

Edited By Denis Watkins on 10/08/2016 09:11:27

[kc]

Is the overall weight much more than the 4lb 3.5 oz that Peter's model weighed according to the article?

 

Check for any twists in wing or tailplane & elevator. Check for excessive aileron or elevator movement. Check rate switches are set correctly. Check wing to tailplane alignment, particularly check wing bolts and dowels are holding wing firmly. Double check CG is as per plan and measured at the correct place ( it's a double tapered wing on this design isn't it so possibilty is it was measured at wrong place )

Check Tx for any unexpected coupling or exponential that you didn't set - especially if you let someone else play with the Tx ( particulary check expo is the right way for your make Tx - Futaba is opposite to Spektrum )

If you eliminate all the possible problems with the plane then consider whether it is possible that your thumb is actually giving a steady movement as you expected or perhaps jerking a little ( especially on Mode 2 ) Can happen!

Edited By kc on 10/08/2016 10:14:43

[Peter Miller]

I am completely baffled.

Does it tip stall in one direction or either direction. I am assuming that you built the wings according to my sequence in the building instruction in which case it is impossible for a warp to creep in.

The weight would be interesting to know. The CG is measured from the leading adge up against the fuselage side so that should impossible to get wrong. It is at 25% chord whch is extremely safe for any model.

Incidences are all at 0-0.

What engine are you using?

[D for Donald]

Many thanks all for your comments and suggestions. It tip stalled from newly built - rocking violently left and right if the airspeed was insufficient. I am also baffled and had concluded it was just a fast model that wont fly slowly.

My Tx settings, wingbolts and thumb are OK I think. The engine is an ASP32 2 stroke.

After 3 crash repairs and now the fourth yet to be done the model will be heavier than when newly built and also the wing has been repaired twice. I will post an update when I have repaired it again and rechecked against all the suggestions.

[D for Donald]

PS the rocking is in all probability me trying to save the aircraft with overcontrol of a violent wingstall to the left in the first instance.

[Peter Miller]

I can't help wondering just how slowly you are trying to fly it. It isn't going to float in like a Junior 60.

On the other hand it doesn't come that fast. A little faster than perhaps Ballerina but not as fast as Marauder and I don't even class that as "fast".