GliderIreland - Ireland RC Forum - Flying Model forum in Ireland

Gliders => Scale => Topic started by: Fred on January 15, 2012, 10:25:23 AM

Title: ASH25 - 1/4 scale
Post by: Fred on January 15, 2012, 10:25:23 AM: Alright, time to get some old projects to move forward!

This time, next on the line, is my ASH25.
A few specs :

Fuselage lenght : 2.10m
Wing Span : 6.5m
Profile : E68 - 67 - 66 evolution
Weight : should be around 10 - 11 Kgs

The fuselage (look at that smily face! :D )

(http://www.gliderireland.net/forum/images/uploads/Fred/DSCF8138.jpg)

(http://www.gliderireland.net/forum/images/uploads/Fred/DSCF8139.jpg)

The fuselage come from Gewalt, everything else will be hand made.
A bit of work was already done. I made the tailplane more than a year ago, and the wing cores were cut by Joe (thanks Joe :clap: ).
And that take room!

As a reminder, I use this method for my wing spars :
http://www.gliderireland.net/index.php/techniques/vertical-wing-spars

Wings will be in 2 pieces.

So first, you start with the wing sheeting, the top first. The sheets are linked the usual way for this kind of work, evrything is glued with PU, and bagged for 24 hrs.
That gives you this stuff :

(http://www.gliderireland.net/forum/images/uploads/Fred/P1060321.jpg)

(http://www.gliderireland.net/forum/images/uploads/Fred/P1060320.jpg)

(http://www.gliderireland.net/forum/images/uploads/Fred/P1060328.jpg)

(http://www.gliderireland.net/forum/images/uploads/Fred/P1060327.jpg)

You can see here the "channel" for the vertical spar, before being cut all the way through. This way the profile is not "disturbed".

(http://www.gliderireland.net/forum/images/uploads/Fred/P1060323.jpg)

With a screw driver in my case, remove the remaining foam, and free the slot for the spar

(http://www.gliderireland.net/forum/images/uploads/Fred/P1060324.jpg)

(http://www.gliderireland.net/forum/images/uploads/Fred/P1060329.jpg)

It is very important to do all the work on the wing,while they seat on their foam cores to make sure they are straight!

Like on the mini how to link, the spar is then added, and cut to size.

(http://www.gliderireland.net/forum/images/uploads/Fred/P1060330.jpg)

The spar will be epoxied in place, wrapped in carbone, and everything will be bagged to make sure everything stays where they supposed to be!

More photos soon! (still drying!)
Title: ASH25 - 1/4 scale
Post by: billscottni on January 15, 2012, 12:13:10 PM: Beautiful fuselage Fred, but I think you need a better looking model :wink:

Be really interested in seeing that fly :clap:
Title: ASH25 - 1/4 scale
Post by: Alan_Perse on January 15, 2012, 15:03:56 PM: Great job Fred. Very informative. Keep the pictures coming.
Title: ASH25 - 1/4 scale
Post by: Happy Days on January 15, 2012, 15:13:53 PM: Fred,...what do you mean by "Bagged"? Are you vacuum bagging this wing?

K. :?:
Title: ASH25 - 1/4 scale
Post by: Fred on January 15, 2012, 15:25:23 PM: Thanks guys :)

Keith, yep, the wings are vacuum bagged
Title: ASH25 - 1/4 scale
Post by: erwan on January 15, 2012, 20:47:56 PM: falut Sred

11 kilos, ca me parait un peu light pour cette taille de machine. Pour info je pense sortir le DG pour 14 ou 15 kilos.

a+
Title: ASH25 - 1/4 scale
Post by: Fred on January 16, 2012, 08:21:45 AM: Salut Air One,

Bah non, ca reste quand meme une machine au 1/4, donc assez petit :D
Bon, comme tu m'as mis un doute, j'ai fouillé le Interweb, et chez les GPR, un gars le sort au 1/4 a 8kgs :D

About the glider projected weight, I say 10 / 11Kgs, but 14Kgs seems more realistic.. In fact, even if the WS is 6.5m, this is still only a 1/4 scale machine.
Looked over the internet for some reference, and some guys are doing it at 8Kgs :D
Title: ASH25 - 1/4 scale
Post by: mario on January 16, 2012, 17:00:14 PM: bon ça vole en avril :mrgreen:
Title: ASH25 - 1/4 scale
Post by: orionis on January 16, 2012, 18:58:54 PM: En avril? Pff, dans 15 jours, oui [mode pression ON]
Title: ASH25 - 1/4 scale
Post by: the Pope on January 18, 2012, 08:35:10 AM: OHH joli projet.
Fred, t'es pas obligé de faire la gueule, sur les photos........ :lol:
Title: ASH25 - 1/4 scale
Post by: Fred on January 18, 2012, 13:02:38 PM: Yeah, that's to scare the crows! :lol:

April.. hmmm, too cold in the garage for the resin :!:
Title: ASH25 - 1/4 scale
Post by: mat2verre on January 18, 2012, 17:24:15 PM: Hooo que c'est bôôôôô! Fais pas la gueule Fred!!!

Biz @+

Mat
Title: ASH25 - 1/4 scale
Post by: Fred on January 18, 2012, 19:08:42 PM: Je suis pas tibulaire, mais presque :mrgreen:

(can't translate that! :P )
Title: ASH25 - 1/4 scale
Post by: mario on January 18, 2012, 19:14:12 PM: utilise la polyester , c est moins chiant :mrgreen:
Title: ASH25 - 1/4 scale
Post by: Fred on January 18, 2012, 19:28:52 PM: :lol: :P :P
Title: ASH25 - 1/4 scale
Post by: orionis on January 18, 2012, 19:44:11 PM: Quote from: "Fred"
Je suis pas tibulaire, mais presque :mrgreen:

(can't translate that!)

"I'm not tubular, but almost", tu vois, c'est fastoche, l'anglais...
Bon, c'est sûr qu'à comprendre, c'est une autre paire de manche. Tiens, "une autre paire de manches", tu sais d'où ça vient? :lol:
Title: ASH25 - 1/4 scale
Post by: the Pope on January 20, 2012, 18:42:16 PM: :lol: J adore cette traduction..............dommage qu'elle ne vienne pas de moi.......... :D
Title: ASH25 - 1/4 scale
Post by: Fred on April 03, 2012, 20:29:30 PM: Ok, finally some decent temperatures in the garage last week!
Time to do some resin!
Finally my spars are done in the wings. 5mm vertical spar carbone tape wrapped, plus the gap filled with carbone tow the entire lenght of the wing.

(http://www.gliderireland.net/forum/images/uploads/Fred/IMG_0335.jpg)

(http://www.gliderireland.net/forum/images/uploads/Fred/IMG_0336.jpg)

I always put some cling film on top of the work, just in case :roll:

And everything is bagged

(http://www.gliderireland.net/forum/images/uploads/Fred/IMG_0324.jpg)

Cook for 24 hours, and I now have a very strong set of wings!
They are the interior panels of the wings. Another 2.5m is missing to get the 6,5 metres :D I'll try to have the external panels done this week end.

So next : Wing joiner box to be glued at the root on the spar, wing joiner box at the tips, and time to do the sheeting. I will do eveything in one operation, just need the temperatures to go up again now! :!:

Go on Keith! Get started on those Mu28 wings! :P
Title: ASH25 - 1/4 scale
Post by: mario on April 03, 2012, 21:07:18 PM: quoi , l ash n est pas pret pour ma venu :cry: :wink: :mrgreen:
Title: ASH25 - 1/4 scale
Post by: Fred on April 03, 2012, 22:00:15 PM: :( Trop froid pour la resine en ce moment, et j'ai pas d'étuve :!:
Title: ASH25 - 1/4 scale
Post by: Happy Days on April 04, 2012, 00:16:24 AM: Quote from: "Fred"

Go on Keith! Get started on those Mu28 wings! :P

Ooooooooo!!!, but what if I get it wrong??? :(

Feeling nervous Keith racks his brains to think of an excuse for not starting the build! :?: :?:
Aa-hu, here’s one……. :D ‘Luc ,of miniplumes, didn’t send a wing joiner, and despite my email requests for them he doesn’t reply to me any more!’ :roll:

(Me thinks: Fred will come up with an answer to that eventually but maybe it’ll keep him quite for now.)
Title: ASH25 - 1/4 scale
Post by: Fred on April 04, 2012, 08:47:38 AM: That's one of the worse excuse of 2012 so far! :P

What was the wing joiner size? :?: And that should not stop you doing the first sheeting anyway! :P
Title: ASH25 - 1/4 scale
Post by: Happy Days on April 04, 2012, 09:29:49 AM: :lol: :lol: Oh! That made me laugh Fred!!!
And you are, of course, correct.

I’ll tell what I’ll do,……

I’m in England for Easter, and then I’m visiting the States during May. When I get home from these travels’ I’ll make a start on the Mu28's wings. I have no excuses really, I’ve got the resin, carbon tape and spar, although I do have some repairs to make on other models, like the Kulbutin, but they shouldn’t take too long.

There,...you’ve beaten me into submission Fred. Happy now? :roll:

K.
ps I don't know the size of the wing joiner, I never received it!
Title: ASH25 - 1/4 scale
Post by: Fred on July 20, 2015, 08:24:55 AM: Bringing that one back from the dead!

Progresses made on the ASH! At last!
Big step forward with the elevator fixing.

(http://www.gliderireland.net/forum/images/uploads/Fred/IMG_0337.JPG)

(http://www.gliderireland.net/forum/images/uploads/Fred/IMG_0338.JPG)

And with a 2.5m Baudis Ventus (almost ready!)

(http://www.gliderireland.net/forum/images/uploads/Fred/IMG_0355.JPG)

And all this while watching the Bray Airshow :)

(http://www.gliderireland.net/forum/images/uploads/Fred/BrayAiShow.jpg)

(http://www.gliderireland.net/forum/images/uploads/Fred/BrayAiShow2.JPG)

(http://www.gliderireland.net/forum/images/uploads/Fred/BrayAiShow3.jpg)

(http://www.gliderireland.net/forum/images/uploads/Fred/BrayAiShow4.jpg)

(http://www.gliderireland.net/forum/images/uploads/Fred/IMG_0347.JPG)
Title: ASH25 - 1/4 scale
Post by: Happy Days on July 20, 2015, 08:54:54 AM: Oh WoW! :D How cool is that! Building a plane while watching an air show 8)

(By the way, who trims the lawns at you place? very neat :clap: )
Title: ASH25 - 1/4 scale
Post by: Fred on August 10, 2015, 20:17:19 PM: Moving on the ASH!
Getting there :)

Only modification so far to the original plan, is that I added Winglets. Prettier this way I think :)
They are modified ones from Topp-Rippin.

Anyway, if all goes well, should be ready to fly this week end.
Left to do: Rudder, tow hook, CofG

(http://www.gliderireland.net/forum/images/uploads/Fred/IMG_0430.JPG)

(http://www.gliderireland.net/forum/images/uploads/Fred/IMG_0431.JPG)

Keeping an eye on a good day for a first flight in Mount Leinster now. W or NE please! Need room for landing :)
Title: ASH25 - 1/4 scale
Post by: mario on August 10, 2015, 22:00:33 PM: Pilotes? :wink:
Title: ASH25 - 1/4 scale
Post by: Fred on August 10, 2015, 22:04:03 PM: Nan :oops: Faut que j'en commande
Title: ASH25 - 1/4 scale
Post by: orionis on August 11, 2015, 07:51:29 AM: Joli bestiau, va falloir songer à changer de jardin, si ça continue! :D
Title: ASH25 - 1/4 scale
Post by: selleri on August 11, 2015, 11:20:20 AM: Looking good!
Title: ASH25 - 1/4 scale
Post by: Happy Days on August 11, 2015, 16:51:52 PM: May be your luck is in Fred. This Sunday is looking good. Gentle N / NW breezes. Couldn't be better for the North slope of Big L. if you're looking for a gentle first flight.
Weather could change between now and then of course, but keep an eye on it, you never know your luck. :wink:

Little Keith
Title: ASH25 - 1/4 scale
Post by: Happy Days on August 14, 2015, 16:41:28 PM: Tomorrow looks good for the west slope,...........I'll be up there from around 1pm. Big Keith is threatening to join me. :shock: Help! :(

Little Keith
Title: ASH25 - 1/4 scale
Post by: Keith on August 15, 2015, 00:42:39 AM: Ohh yeah I'll be there alright :D
Title: ASH25 - 1/4 scale
Post by: Fred on August 15, 2015, 07:50:01 AM: Oh boy, you are doomed then!
Wife just have another plan for me today! :(
Tomorrow or next week end now. Lovely weather here to top it up! :!:
Title: ASH25 - 1/4 scale
Post by: Fred on September 14, 2015, 20:08:20 PM: Sorry for the small photo, doing it on the go!
Thanks to the Irish weather, I can't set it up outside for a last photo, but the ASH is ready to fly!
AUW is 8.2Kgs. Not bad at all, was expecting around 10 kgs!

First flight in tow with Ronan sometimes this week :)

(http://www.gliderireland.net/forum/images/uploads/Fred/ash-25-%20deco.JPG)
Title: ASH25 - 1/4 scale
Post by: billscottni on September 14, 2015, 21:07:56 PM: lookiing great Mr Marie
Title: ASH25 - 1/4 scale
Post by: mick a on September 15, 2015, 14:44:58 PM: looking good fred
you got any pics of the ronan ?
Title: ASH25 - 1/4 scale
Post by: Fred on October 16, 2015, 09:55:42 AM: Alright, catching up!
Did I said it flew? And very nicely at that!

First Flight was done by Michel Leroyer. When you have a specialist of High aspect ratio wings, you just have to let them do it! :D

Anyway, all he said after a minute was "perfect, do not touch anything!).
The glider flies very very well, it is almost too easy!
The look in the sky is fantastic with those big thin wings. Very quiet model as well on low passes.
Regarding the lack of flaps, that did raised a few eyebrows that I did not put any.
My argument was that if you select a good profile, no need for me to play with switches etc etc on my radio... After a few pilots tried it, they agreed!
Flaps not needed, that thing slow down nicely, and go up in any thermals (compared on the day with other machines with the full stuff)

Airbrakes (500mm) are more than enough to slow it down, but again, the glider is not vicious at all.

All in all, very happy :D

Ronan with man tool to widen a last minute change on the fuselage :p

(http://www.gliderireland.net/forum/images/uploads/Fred/ASH25%20Ronan%20bricole.jpg)

Those wings are bendy! I have to say, on the ground, it does not look great (looks sad :( ) but in the air... :o :o

(http://www.gliderireland.net/forum/images/uploads/Fred/ASH25-%20Sol.jpg)

(http://www.gliderireland.net/forum/images/uploads/Fred/ASH25-%20Attero.jpg)
Title: ASH25 - 1/4 scale
Post by: selleri on October 19, 2015, 02:54:36 AM: Very nice! Congratulations! :clap:
Title: ASH25 - 1/4 scale
Post by: Fred on October 19, 2015, 19:41:34 PM: Thanks Sverrir :)

Oh and, you never came, we had beers and wine for you around the bbq! :P :P
Title: ASH25 - 1/4 scale
Post by: selleri on October 19, 2015, 20:27:12 PM: Quote from: "Fred"
Oh and, you never came, we had beers and wine for you around the bbq! :P :P

Now you tell me! :!:

We'll have to schedule something now that we've got direct flights between the islands! :?:
Title: ASH25 - 1/4 scale
Post by: Fred on October 19, 2015, 20:44:29 PM: And for Falaise! 15 years anniversary next year! :D

Ah go on, we know you want to! :P