The Terry S from Graupner

[Cyberfyn]

I agree Dave. The first setup I had was doing over 100mph! In fact I melted the foam around the motor

This little plane easily blasted around at speed, and as long as you don't overstess the airframe by yanking the wings off it it can cope. Huge carving turns and fast n low passes are it's playground. Don't underestimate the strength and flexibility of the Solidpor foam. It bends a LONG way before it snaps (just ask my old Twinjet)

 Ian F.

[Mark S]

Looks like the Terry should be an interesting little project then! I'd been looking for a plane like this for ages as I didn't want to destroy another fibreglass plane so thank you Graupner. I also have a Blizzard to build but I'm not allowed to touch that until Christmas

Ian, my Funjet has taken a few hits but CA has fixed it every time. It doesn't look great but it still flys! Elapor / solidpor is great stuff.

[Mark S]

Mine has arrived and I'm well pleased to say the least. This is exactly what I was after, a cheap, fast foam warmliner that can be flown pretty much anywhere! There's so much room in there that a 4 cell setup is easily possible with enough strengthening Fitting aileron servo's will be quite simple as the wing is thick enough for even 9g servos to be mounted flush but it will definately need a better fixing to the body. I think I will use the rudder after all. Looks like I'll be busy tonight!

[Cyberfyn]

Depending on your motor setup, make sure you get good cooling for the motor and ESC. It's a push fit into the worlds best insulation after all There is no exit for the hot air in the fus, so a hot setup will need it.

 I've used a folding prop and a spinner that has a cooling hole in it (looks like a ME109 spinner)

 Ian F.

[Mark S]

I'll probably cut some grooves down the motor hole to allow some air to pass over the casing and add some more holes in the canopy.

Where did you get the spinner from Ian?

[Cyberfyn]

http://www.overlander.co.uk/products/default.asp?cid=&scid=&pid=2418

 Looks like the are out of stock now though

Ian F.

[Mark S]

Thanks Ian. Puffin have them though! I'm wondering if a 7x4 may be too much for the 16/15/4?

[Cyberfyn]

The 16/15/4 can cope with a 7x4 no problem. What ESC are you going to use? I eventually used a 45a job.

Ian.

[Mark S]

I have a Tornado V2 40amp and a HiModel 40amp lying around but I use 60amp Hobbywings on my 4 cell planes and they are the dogs danglies. Quite cheap at £27 from Giantcod.

[Old Geezer]

    Managed to "cook" my Inrunner, too much thermal insulation I guess.

    In process of cutting nose back, gluing on a ply bulkhead and installing an inexpensive rear-mounted Outrunner (220W nominal), not exactly elegant or aerodynamic but should be fun.

[Mark S]

I am considering glueing a motor mount plate on the front and opening up the motor hole for airflow around the motor. At over 20 amp draw I think it will need it! 

[Mark S]

Well my Terry is pretty much finished and I'm very pleased with how it looks. I have only deviated from the stock plane by installing ailerons and a 3mm carbon rod in the horizontal stabiliser as it seemed a little flimsy. Everything was fine until the right aileron servo packed up but at least it did on the bench and not in the air! Won't take much to change it out though. I eventally got a headless Pelikan spinner from Puffin and they're rubbish! The 3.2mm version would not tighten down onto the Mega's 3.17mm shaft and the aluminium is so soft that the thread stripped out trying to tighten it up. I now have a decent one on the way so the maiden should happen this week sometime. Watt meter is showing 230 watts on a 6x4 APC prop so the Graupner 7x4 should be interesting. I'll post some pics when i get a chance.

[Old Geezer]

On advice from Gary at BRC I bought a  2212/10 from them (nine quid), rear-mounted it onto the ply firewall I had attached where I had cut off the nose portion containing the "cooked" inrunner. Once I had extracted the deceased inrunner from the amputated portion of the nose, I opened up the internal diameter of this piece of nose to clear the larger diameter outrunner and glued it back on to the front of the firewall. So she looked almost as before but just1/8" longer

With a 9 x 6 CAM folder and a 1000mA 3S LiPo (25C)  she flies better than with the previous inrunner, admittedly she looks a bit scruffy after my ad hoc surgery, but she must be getting close to David's model's 50mph in a dive.

[David Ashby - Moderator]

How many amps are you pulling Gurth ?

Mark - wow, that things going to travel fast!

[Old Geezer]

David

all CAM folders: 

9 x 6 - 1000 3S Tornado = 16A, 1800 3S Tornado = 18A,  1800 3S Loong Max  = 24A  (Ouch!)

8 x 4.5 - 17A on the Loong Max, 14A on both of the Tornados.

7.5 x 4 -  all 3 sets of cells gave 10A

I hadn't checked until David asked the question but, happily I hadn't flown the Terry with the 1800 LM on a 9x6, as I would probably cooked either or both both the speed controller and the new motor.

I've now settled for the  8x4.5 as the most comfortable option, I doubt there will be much difference in the air.

I was dissuaded by Gary at BRC from putting a 2409-12 T into the Terry, he thought it would be too much, I'm still tempted as I have one in a VTO (well almost)  Formosa and that IS quick.

[Steelcityuk]

Hi,

 Can the model be lightly sanded first to remove the moulding lumps and bumps?

 Thanks.

 Steve.

[David Ashby - Moderator]

Yes like any EPO/Elapor foam model it could be although personally I don't think they're an eyesore.

[Cyberfyn]

Plus, you can see where it's been sanded. You really can't see them as soon as it's in the air. And there are THOUSANDS of the bloody things !

ps. Most paints won't stick to it, but Multiplex do a special primer that alows you to decorate as you see fit.

 Ian F.

[Old Geezer]

Care with the primer. Use too much and the surface turns mushy.

[David Ashby - Moderator]

Someone on the forum here once said that the little bumps act in the models favour aerodynamically, I'm trying to think what was said now - something about distrubing airflow.....

[Steelcityuk]

Ah OK I'll go with it as it is then. I guess the airflow assistance is a bit like the 'shark' skin swimming suits that competition swimmers use.

Steve.

[Cyberfyn]

More like the golfball effect actually

Ian F.

[Mark S]

I use Japlac paint from International Paints on my Multiplex planes and it sticks quite well. It's a brush on self-levelling paint that dries to leave a laquer type finish. Most good DIY stores sell it.

[Mark S]

Maiden flight took place this morning and it was fast and tracked perfectly. My guess at aileron size and throws was pretty good as they worked great but the bad news is that after a few minutes something went seriously wrong as it glitched badly and full elevator sent it down fast. Fortunately a soft bush saved it from any real damage but the soft bush was the other side of a stream

I'm now sat here at work with wet feet wondering how to dry them! Anyway, I think the RX may be too close to the control rods so I have some work to do. I'll also swap out the ESC for another just incase. It was good for those few minutes though

[David Ashby - Moderator]

Glad it went well'ish - what RX are you using Mark?