Here is a list of all the postings George P. has made in our forums. Click on a thread name to jump to the thread.
|Thread: Seagull 80" DH Chipmunk|
It will be grand to get our two Pups out on patrol! I am not planning to test fly mine until the weather is ok for scrabbling about on the floor with rigging wires etc.
The Chippy will fly as soon as it is not freezing , flooded or blowing a gale! It is a good size but the higher aspect ratio wing provides the 80". It is the same size as a 66" wingspan warbird I have and so it is easy to store and transport. Having said that, I do like the idea of Danny's 1/4 scale Chipmunk project!
Hi Danny, I do admire the work you did on a new stab and elevators. You certainly saved enough weight to make it worth while. I did think about copying you but in the end decided I wanted to get it assembled asap so I could focus on other things.
Hi Chris, my c/g is at 117mm so reading through this thread, and you and Danny's comments, I should be ok for the maiden and will tweak from there as you say.
That picture is a cracker!
I like the magnets idea; I may make the change once I have test flown.
Flying mine on 6s 5000ma. I know you posted that you removed some weight after test flights, do you know what weight it is (without flight pack) now? Just curious.
Chip Chip Horay! You can tell I am feeling' Chipper' that the Chipmunk is ready to go. The last Seagull ARTF I assembled was about thirteen years ago and although there is a very familiar fit and feel they have definitely made big improvements. It was a straightforward build and took about a week. No modifications although I was tempted to after having felt the weight of the individual components (the model has come out at just a couple of ounces below 11lbs so not bad at all). Model is for sport flying and so wanted to simply put together between kit builds.
I was fortunate in that the wing tube went in no problem but I did spend an hour filing out a hole for a wing bolt to get it to fit. I also had to do some sanding to get the stab and rudder assemblies to fit and align correctly.
The decals are an issue for me; I do not like to see shiny surfaces around them and so spent a day cutting out each item before attaching them to the airframe. As there is no flying weather I am tempted to strip out the ply from the canopy assembly as it is quite hefty (pilot tacked in and screws used to hold canopy so I can modify later).
Danny, do you know what weight saving you made on the canopy/ hatch?
|Thread: DB 60" Sopwith Pup|
Great progress, Geoff.
I am very familiar with the feeling of working for hours and not seeming to achieve very much. Although, for me, I am more aware of a feeling of constantly deciding to do 'that job that should take fifteen minutes' only to discover that it has taken at least two hours or more.
|Thread: DB Sport and Scale 1/4 Pup Battery Hatch Details|
No need for a battery strap as the batteries are a snug fit up against front formers. May have to add one if I use slimmer batteries some time (if they puff up too much they will not fit...perhaps not a bad thing). There is airflow over the batteries and this should escape through the cockpit/ around the pilot. Or if needed I can add the tailskid inspection gap/hole.
I will check the CoG again when I check out the rigging but it seems to work; I've fitted a substantial dummy motor that really helps.
Edited By George P. on 07/11/2019 12:50:04
Hatch/ cheek is held on with magnets. The belcrank prevents the tray from sliding out ( I intend to add further security with a short length of piano wire to ensure the belcrank can't move once in position.
I need to make and fit the machine gun, final check of the rigging wires and I am ready to maiden.
Oops... forgot picture!
I made the hatch on the cheek functioning so I could choose to extend lipos wires outside to connect up but it is easy to do it with the cheek hatch off anyway.
The Lipo tray. I had lots of 6s lipos and wanted to use them. I use two batteries but wired to give double the capacity with the same voltage. This was mainly to have useful weight as far forward as possible and still practical. I have a plan B should I need to move the C of G further forward but it appears to balance on the plan C of G with the two 6s lipos. Two formers in front of the Lipos also prevent any movement.
I made a rail for the Lipo tray to run in and to keep it in place.
I was concerned about the resulting fit of the cheek/hatch but I am happy with it.
I thought I would share my battery access arrangements on my Pup should it prove useful for anyone considering converting from ic to electric and wondering about access for the flight pack. With my limited building skills, I am sure many here could do a far better job but thought it might prove useful to someone contemplating how they would tackle the task to suit them.
Edited By George P. on 07/11/2019 10:16:22
|Thread: Seagull 80" DH Chipmunk|
I look forward to getting it in the air.
I was wondering about the flap throws. Are yours set up as per manual? Any elevator mix?
Did you find the other control surface throws ok for maiden?
Any other hints / tips before the maiden much appreciated.
|Thread: recommendation for a 20 amp sbec|
Thanks, Jeff. That's very useful to know.
Not the Pup, Geoff. It is yet another project I have put together in between jobs on the Pup (nearly finished now).
The 20 amp is a spike rating and the continuous rating will be lower than that (as I have discovered when reading the manuals online). I don't mind the extra weight or bulk and it could be useful for future projects.
The YEP 20 amp is a very tempting price but It would be great to get some feedback from anyone on here who has experience of this.
I am looking at 20 amp sbecs and wondered if anyone had any recommendations?
I have used a Castle Creations 10 amp that has been excellent but their 20 amp version is getting pretty expensive. At the other end of the market there is the Yep 20 amp. Has anyone had any experience of this?
|Thread: Seagull 80" DH Chipmunk|
Thanks Dennis, I agree that colour can make things look bigger. I also find it interesting how walking around the Nats and looking at 75" aerobatic models I find myself thinking they look quite compact really until I remind myself that in my hobby room they will take up some considerable storage space!
I enjoyed reading this thread.
I have always had a soft spot for the Chipmunk and really like the look of this one. I have a Seagull Sea Fury and the dimensions seem to suggest this is about the same size? On the other hand I saw the Slec/ Apache Chippy at the Nats and it has the same wingspan but looked considerably larger? I did a search on the internet but have found no pics with pilot etc. to gain a better idea. Does anyone know how the Slec and Seagull compare? Or does anyone have a Sea Fury they can compare it to?
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