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Gliders => Scale => Topic started by: Fred on October 21, 2010, 11:52:05 AM

Title: 1/4 scale Kranich II
Post by: Fred on October 21, 2010, 11:52:05 AM
Alright, this is this time of the year again !
Moving on slowly on my "wish list", one of my winter build will be the DFS Kranich II...
Everything home made of course, and to the usual 1/4 scale (that's 4.5m WS).
All wood construction (plywood).
Plans are being finalized and are made using Martin Simons drawings, wood is ordered  :D

A quick view of the plan :

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

Stay tune for more in about a month!  :D
Title: 1/4 scale Kranich II
Post by: Alan_Perse on October 21, 2010, 12:40:13 PM
Ah. I knew you were up to something  :D  :D . Looks like it will be a nice model, and big too for 1/4 scale.
Title: 1/4 scale Kranich II
Post by: billscottni on October 21, 2010, 16:35:59 PM
Nice Fred :clap:  :?:
Title: 1/4 scale Kranich II
Post by: JohnPearson on October 21, 2010, 22:59:22 PM
I like this Fred, a real man's glider!
Title: 1/4 scale Kranich II
Post by: orionis on October 22, 2010, 09:40:41 AM
Hi Fred,
Will there be a short kit out of it?
Title: 1/4 scale Kranich II
Post by: Fred on October 22, 2010, 11:46:49 AM
Salut Fabrice,

Well, maybe, it is planned, but there is still a long way to go  8-[
I'll go with all plywood/varnish finish on that one too.

Printed the fuselage's plan, and that's a fat beast!  :D
Title: 1/4 scale Kranich II
Post by: Alan_Perse on October 22, 2010, 11:49:16 AM
Hi Fred.
When you are printing out your plans, do you have to make sure it will fit on a standard sheet of paper like A1 or A0.
Title: 1/4 scale Kranich II
Post by: Fred on October 22, 2010, 11:55:56 AM
Hi Alan,

No  :D
Well, Yes.. Ok, confused now ?  :P

The only limitation I have is the width of the roll of paper (90cm in theory, but with the printer margin, that can be less than that... Always use 84cm as a max...), but in lenght, driver take up to 15.6m  :mrgreen:
Title: 1/4 scale Kranich II
Post by: Alan_Perse on October 22, 2010, 12:16:41 PM
Quote from: "Fred"
The only limitation I have is the width of the roll of paper (90cm in theory, but with the printer margin, that can be less than that... Always use 84cm as a max...), but in lenght, driver take up to 15.6m  :mrgreen:


Thats interesting. I was at my local stationary shop a few weeks ago. They have a plotter there and they said that the larges thing they can plot is A0 size. That does not make sense to me. The roll of paper that is in the potter is many meters long so it should be possible to plot something that is as long as the roll of paper, of coarse the width will be limited by the width of the roll.
Title: 1/4 scale Kranich II
Post by: Fred on October 22, 2010, 12:25:01 PM
My experience with the guys who have plotters in shops etc, is that they don't really bother having a look at what they can do!  :evil:
Spent month looking for someone to print our plans in this country !
Thanks to Dave, now have my very own plotter  :D
Title: 1/4 scale Kranich II
Post by: Fred on January 05, 2011, 11:45:56 AM
Ok, I though I'll give an update on that one !

Progress so far slow, because of the kits and Christmas, but lots of work done this week !
Formers are on the way (hate doing that!) and wings are almost fully completed !

For the wings, I'm going to change my usual way of doing things, as I had to rethink that because of the gull wing configuration, but they are going to be built flat, on the spar, like some of the Schneider kits  :D

Printed the plan the other day.. Looking forward to start that one !  :D
Title: 1/4 scale Kranich II
Post by: Fred on January 12, 2011, 11:08:06 AM
Alright, another quick update  :D
Moving slowly, hate doing the formers ! Spend roughly an hour by former (well, for the one in the middle section with the wing root etc :!: ).
And find an issue with M. Simons 3 views. My root profile is too thick (about 16%) and need to be around 13%.
So, change that before moving further.

I also made my choice of profiles, and going to try a new combination!

The obvious MS535-2 from root to mid wing (where the gull start) to HQ35-10 at the tips.
That gives a nice curve, but I might change the tip to my own symetric one.
Spars and notches are drawn, and I'll get started when I finally decide what I'm going to use.
Alright, I go back to my formers !  :?

(http://www.gliderireland.net/forum/images/uploads/Fred/Kranich%2011JAN11.jpg)
Title: 1/4 scale Kranich II
Post by: billscottni on January 12, 2011, 12:00:13 PM
What CAD programme are you using Fred?
Title: 1/4 scale Kranich II
Post by: Fred on January 12, 2011, 12:12:23 PM
Hey Bill,

I'm using Turbocad  :D
V6.5 used to be free (can still be found on the ternet).
Version now is 17 I think, but I only use the basic tools.

Still trying to learn Solidworks  :!:  :!:
Title: 1/4 scale Kranich II
Post by: orionis on January 12, 2011, 12:27:45 PM
Nice drawing, Fred!
Will there be a short-kit in the future?
Title: 1/4 scale Kranich II
Post by: Fred on January 12, 2011, 12:31:03 PM
Thanks Fabrice  :D

Yep, short kit is on the pipeline for that one  :D
Sometimes next year, or this year if we get lucky.
Hope to have the plan done by the end of the month. We'll see, still lots of work, but I have finally setup my office at home, so that might speed up the plan drawing!  :D
Title: 1/4 scale Kranich II
Post by: billscottni on January 12, 2011, 12:50:22 PM
Quote from: "Fred"
Hey Bill,

I'm using Turbocad  :D
V6.5 used to be free (can still be found on the ternet).
Version now is 17 I think, but I only use the basic tools.

Still trying to learn Solidworks  :!:  :!:


I have a version of TurboCad at home. Need to check whch one and start teaching myself to use it!!!
Title: 1/4 scale Kranich II
Post by: Alan_Perse on January 12, 2011, 13:31:00 PM
Quote from: "Fred"
Still trying to learn Solidworks  :!:  :!:


Looks good Fred. Where did you get Soildworks from. I want to learn how to use it as well but the software is very expensive.
Title: 1/4 scale Kranich II
Post by: Fred on January 12, 2011, 14:07:57 PM
Hey Alan,

You can get a Student edition, if you know one  :D  for (much) cheaper (wife is a teacher  :P ).
But I think the licence is limited in time, but that allow you to train with the software before spending the big money (you get a discount with the student version). So will see when the licence expire.

Otherwise, Dassault do a free version of a CAD program (They also do Solidworks), but I don't know if that cad do the 3d stuff things.

You can also have a look at Rhino 3D, much cheaper than Solidworks!
Title: 1/4 scale Kranich II
Post by: billscottni on January 12, 2011, 17:17:01 PM
Just checked and I have Version 9 and I've found a copy of the Turbocad 2D traininig guide on my bookshelf  :?:

No excuses now :!:  :?
Title: 1/4 scale Kranich II
Post by: conny on March 22, 2012, 08:47:08 AM
any progress???
Title: 1/4 scale Kranich II
Post by: Discusdan1 on February 20, 2013, 03:52:27 AM
Hi Fred
What happened to your project ? Did it fly ?
My wife flew a Kranich last summer.It was from AP Models
and was 3,7m...
Flew very well.
Look at our forum,you'll see it.
Cheers,
Daniel
Title: 1/4 scale Kranich II
Post by: Fred on February 22, 2013, 08:45:51 AM
Hi Daniel, Conny

Sorry for the late reply, crazy week(s)!  :!:  :!:
No real progress, I have a look at the plan from time to time. Wings need to be done, fuselage looks 90% completed.
Need days that last 48 hours!  :!:  :!:

I finish the Grunau, and this one will certainly jump up in the queue. That's the plan anyway  :?
Title: 1/4 scale Kranich II
Post by: conny on March 11, 2013, 01:56:22 AM
Alright fred, we wait. :D
Title: 1/4 scale Kranich II
Post by: Fred on March 11, 2013, 11:26:52 AM
Hey Conny  :D
I hope you have a supply of tea, as the wait can be long!
Haven't touched the fuselage since the last time. Just did a bit more work on the wings and that's it so far  :oops: