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giant sailplanes - 11/7/2002 7:28:16 AM   
MTT



Posts: 558
Joined: 1/18/2002
From: West Chester, OH, USA
Status: offline 		Hi, Landi, you're right, long time no see (hear, write) !

Whatever.

And you're right, finally we get to talk about "real" sailplanes around here, but there is still too little activity in that department, the same on E-Zone, alsthough they opened a forum for scale sailplanes, there is not much activity there either, so I usually end up on the germand forums.

BTW, have got your Schueler ASH26 by now ?

Michael

(in reply to talybont)
       Post #: 51

giant sailplanes - 11/7/2002 1:54:25 PM   
VinceC


 

Posts: 89
Joined: 3/21/2002
From: St. SaviourGuernsey, UNITED KINGDOM
Status: offline 		I have been interested myself in the possibility of installing a launch system on a glider. I have two models in particular, which are modelled on fullsize self launch gliders, namely ASH 26E and DG 600M, both of which I have just drawn the doors on top of the fuselage.

If I were to convert these to self launch, can any of you guys tell me about what extra strengthening you put in your fuselage around the doors to prevent the fuselage folding at its weakest spot

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(in reply to talybont)
       Post #: 52

giant sailplanes - 11/7/2002 1:59:46 PM   
Gary Retterbush



Posts: 238
Joined: 3/9/2002
From: Eisenschmitt, AE, GERMANY
Status: offline 		John,

My setup is probably a bit crazy, especially when I have a good computer radio. Anyway, I have the doors on a switch which can not close unless the power system is retracted. The power system retract is on a 3 way switch which can not retract unless the motor is off and can not run unless the system is full up. The mid position of this switch is about 20 degrees aft of full up which cuts the motor and allows the prop to come to a stop (hopefully at the right position). I usually count to 5 rather slowly and then go for the full retract IF I think the prop is at the right position. The motor ESC is on the left stick and as noted can not run unless the power system is full out and up.

Now it would be possible to do all this with just the stick but I like having the ability to stop the sequence of events at any point.

The ratchet just does not stop the prop at the right position some times and if I don't see it (very hard to do even with binoculars) I get the doors with the prop. Luckily I have not lost a door yet; just torn a hinge out and the door hangs on the other one. I'm going to put a small safety cord on each door so if it gets ripped off it has a chance of staying with the bird.

I would NEVER install this system in another plane. The new systems are much, much more reliable and well worth the month's pay that they cost.

(in reply to talybont)
       Post #: 53

giant sailplanes - 11/7/2002 5:31:33 PM   
MTT



Posts: 558
Joined: 1/18/2002
From: West Chester, OH, USA
Status: offline 		Vincent, look here : [URL=http://www.rc-network.de/cgi-bin/ubb/ultimatebb.cgi?ubb=get_topic;f=4;t=000358;p=2]up&go[/URL]
This is a thread about up&go's on a german rc-forum, which won't be of much use to you, I suppose, but on the 2nd page of the thread are several pictures of installed up&go's.

Michael

(in reply to talybont)
       Post #: 54

giant sailplanes - 11/7/2002 6:45:54 PM   
VinceC


 

Posts: 89
Joined: 3/21/2002
From: St. SaviourGuernsey, UNITED KINGDOM
Status: offline 		Thanks Michael. That is a great link.

For anyone else interested in viewing the link in English you may like to consider what I do. I keep the following link in my Favourites

http://translate.google.com/translate_c?hl=en&u=

and when the page comes up as an Error I ADD after the = the link I want to translate.

(in reply to talybont)
       Post #: 55

up&go's for sale - 11/7/2002 8:44:07 PM   
Johng



Posts: 1817
Joined: 1/24/2002
From: Deland, FL, USA
Status: offline 		http://pages.infinit.net/icarerc/self-launch.htm

Here's a link for up&go systems from a dealer in Canada. THe one that would fit my plane, - the 12.5 - costs ($729+) almost as much as I paid for my plane WITH up&go AND battery. Yikes!

Armin, we sure wouldn't mind a detail picture of the unit your father made.

As for installations, the graupner unit in my plane rotates on a steel axle about 10mm dia. the axle inserts thru the fusalage wing roots and captures the rotation mechanism. Then the end of the motor is clamped down to the bottom of the airplane which fixes the unit in position. THis way, you pull 2 screws and slide the axle out - and you can drop the unit out of the plane.

As for extra strength, I don't know if this fuse was molded with extra glass or not. Seems quite strong enough. THere is a "floor" of balsa that runs flat under the prop, that may double as a reinforcement.

I'll see if I can get some digital pics.

_____________________________

John

(in reply to talybont)
       Post #: 56

giant sailplanes - 11/7/2002 8:55:21 PM   
MTT



Posts: 558
Joined: 1/18/2002
From: West Chester, OH, USA
Status: offline 		John, the units sold by Icare ate the ones made by Markus Elicker in Germany. Arguably the best, but also the most expensives, by far !
Here the link to his HP, although in german only : [URL=http://www.modellklapptriebwerke.de]Elicker up&go's[/URL]

I have toyed with the idea of getting on of those, but as you say, the unit alone costs more than the sailplane, batteries included, and you still have to add the motor and controller to that !
So far I haven't been able to bring myself to spend that kind of $ just for the unit. :

But the units are first rate ! Some time back, a friend of mine bought one, and I had the opportunity to see it, and the quality of the parts and workmanship is exceptional !

Michael

(in reply to talybont)
       Post #: 57

giant sailplanes - 11/7/2002 9:52:58 PM   
talybont



Posts: 76
Joined: 10/23/2002
From: Koenigswinter, GERMANY
Status: offline 		I just want to show you some more pics.

CU,
Armin

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< Message edited by talybont -- Nov 7 2002 4:58PM >

(in reply to talybont)
       Post #: 58

giant sailplanes - 11/7/2002 9:59:54 PM   
talybont



Posts: 76
Joined: 10/23/2002
From: Koenigswinter, GERMANY
Status: offline 		... and another one.

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(in reply to talybont)
       Post #: 59

giant sailplanes - 11/7/2002 10:03:33 PM   
talybont



Posts: 76
Joined: 10/23/2002
From: Koenigswinter, GERMANY
Status: offline 		... and a third one. I can't understand why the admin at RC-Network told me the quality of the pictures is too bad to show.

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(in reply to talybont)
       Post #: 60

giant sailplanes - 11/15/2002 10:40:48 PM   
pl365322



Posts: 36
Joined: 10/19/2002
From: Fauvillers, BELGIUM
Status: offline 		Hi everyone,
in reply to all of you who have ratchet propeller noise when retracting, as I wrote before, I insert a electronic delay feature in the retract line of the servo (from 0 till 7 sec setting)and it work great.

By the way, can anyone give me the Vé dihedral angle of your Ventus?

_____________________________

Flying frog

(in reply to talybont)
       Post #: 61

new batteries - 11/20/2002 12:36:28 AM   
Johng



Posts: 1817
Joined: 1/24/2002
From: Deland, FL, USA
Status: offline 		Just got the 2400SCR packs in from Radical RC, $84 & change, shipped for 2 packs of 8 cells each. I need to find an Aveox connector for them.

As for the old 1400 pack, it was getting really hot on the climbs.
I had cut some holes in the heat shrink to promote cooling airflow. After a long climb, I found that the pack temp had actually shrunk the heat-shrink and enlarged the holes. That's hot!

The larger capacity will hopefully result in less thermal stress on the packs. I was able to get the glider up to 1300 feet on one long climbout, since I've got the climb trim set just about right.

I've got the dedicated bungee launcher working - 50 feet of 3/8 bungee and 20 feet of winch line with a steel ring and a screw in dog-stake on the bungee end. Does well as long as I get enough stretch in the line. One try I didn't get enough stretch, and had one sleek looking go-kart rolling down the field. This setup allows me to launch by myself, as I am able to set the glider on the dolly, hook up the launch line, then grab the vertical stab and backpedal until I have enough tension.

_____________________________

John

(in reply to talybont)
       Post #: 62

Ventus dihedral - 11/25/2002 7:56:27 AM   
2milehiguy


 

Posts: 6
Joined: 2/18/2002
From: leadville, CO,
Status: offline 		Froggie, Just checked my Ventus kit ( Graupner Best-Nr-4203 ), the plans are in German, but it says the einstellwinkeldifferenz is 2.5 degrees. By the way, if no one is interested in my Graupner up and go, I may as well use it myself. Problem is I have no instructions or cut templates. Can anyone help me ? Thanks, Bob.

(in reply to talybont)
       Post #: 63

giant sailplanes - 11/25/2002 10:05:47 PM   
pl365322



Posts: 36
Joined: 10/19/2002
From: Fauvillers, BELGIUM
Status: offline 		Hi Bob,
Thanks for the info.
Did you verify if your model match the plan data?
My Ventus kit is also from Graupner but with Best # 4211. I can't help you about the mounting instruction of the Up&Go system but I have the fuse cut templates.
If you send me your E-Mail add. I could scan it and send it to you.
Or do you have a Fax which should be even better.
Ciao for now.

_____________________________

Flying frog

(in reply to talybont)
       Post #: 64

up&go instructions - 11/25/2002 10:38:57 PM   
MTT



Posts: 558
Joined: 1/18/2002
From: West Chester, OH, USA
Status: offline 		Bob, I have the instructions, but they are in german only.

If that's of any use to you, I could copy and mail them.

Michael

(in reply to talybont)