Gliders > Slope Soaring

Building advice required...

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billscottni:
I'm sure I can dig through my stuff and find a few tried and tested plans that would be a better starting point.
As Keith says, build something that will definitely fly, fly it, learn a bit about aerodynamics and then design your own

If you pm me your address, I'll dig out a few plans

jumbo:
Hi AngryMuppet,

As the others have said above I would not advise an original creation for your first build, go with a plan that others have built and flown before. It will still take you an age to complete but at least you can be relatively sure that it will fly when built.

All my first builds where simple electric foamies from free plans and most of them flew. The first few times I went with an original design ended up with me smashing the non flying airframe to bits in frustration.

Also the foam board we get here in Ireland isn't great, if you can find one where the paper peels of easy, this makes it much easier to get clean curved folds. The first ever model I build was the `blu baby` from a free plan on rcgroups. It was an easy build, took about a week and flew lovely (and only cost about €30 in materials) in fact I still fly it sometimes even two years later. It would be a good way to get acquainted  with scratch building before trying to put together a slope soarer (which IMHO need a lot more thought and experience as they are subject to much greater forces).

If you are keen to go with an original model the way I do it is to knock up a very quick FF prototype at a much smaller scale than the RC model and throw it around the back garden tweaking until it glides nicely and only then scaling it up in size and starting the actual build. The nice thing about doing it this way is you have a rough idea if the design is in anyway good or a lemon.

BTW I have your guerilla glue for you. Will bring it the next time I am down at the BIG L (which hopefully is later this month).

Happy Days:
Here, have a look at this David.

http://www.sussex-model-centre.co.uk/shopexd.asp?id=34985

Not too big, banded wings (so in event of a heavy landing the wings separate ) and only £50! :D

You’d learn a lot from building it, it’s only two channel so only two servos needed, and more to the point you know the model will be flight worthy.

Buy the F.D. a bunch of flowers and ask nicely if she’d let you have it. :wink:  (An Aurora I mean!)

L. Keith

angry_muppet:
Looks reasonable.

Would I be rubbing before I walked I'd I said I'd prefer the idea of a 3ch?  Having flown a powered trainer on elevator and rudder I found it a little "wallowy" to fly.

There doesn't seem to be much else around that price point.

Having done the calculations on wing loading, I'd need to have a build weight of 140g to achieve 10oz/sqft. I reckon one wing of foam board would be around that! Really isn't looking practical!

Happy Days:
So, getting fussy are we? :shock:  Okay, how about this little sweetie from the same stable. A tad more expensive but as you seem intent on having ailerons, which I can’t say I blame you,….Very useful for levelling the wings when landing. :wink:


http://www.sussex-model-centre.co.uk/shopexd.asp?id=19016

Here’s some gumph from the wholesalers web site (Ripmax)

This West Wings semi-scale model is 1828 mm (72”) wingspan & is intended for radio controlled slope soaring, but prototypes have been bungee launched from flat field sites into strong thermals.

Controls are rudder, elevator and ailerons. The ailerons require micro servo’s built into the wings.

See how good I am to you. Treat you like my own son, so I do. NO!!! You're not included you in my Will.

BTW, I wont ask what it is you  intend “rubbing” before you start walking. :oops:  I’m sure it would be Too Much Information!

Little Keith

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