GliderIreland - Ireland RC Forum - Flying Model forum in Ireland

Gliders => Scale => Topic started by: mick a on October 16, 2015, 17:54:22 PM

Title: 1/3rd ka8b build log
Post by: mick a on October 16, 2015, 17:54:22 PM
hi guys , well here goes got the kit from fred yesterday
and have started , done the elevators
and as is usual the cutting and fit are excellent
will try to post pics if can work out how to do !!!!!
(wood im good with -computers ...doh!!! )
Title: 1/3rd ka8b build log
Post by: Fred on October 19, 2015, 19:40:46 PM
Hey Mick,

Well, you are not wasting your time!  :clap:
I just saw your photo post, I'll come back to you, but the how to from good old Keith is spot on  :clap:  :clap:
Title: 1/3rd ka8b build log
Post by: Happy Days on October 19, 2015, 19:54:10 PM
Er,........less of the 'old' please Fred.
I know it, and you know it but there's no need to tell everyone :evil:

Keith
Title: 1/3rd ka8b build log
Post by: Fred on October 19, 2015, 20:43:38 PM
But but but... I said good first!  :P
Title: 1/3rd ka8b build log
Post by: mick a on October 19, 2015, 21:36:23 PM
hahaha ill settle for good keith
have just got first struts on fuse 😄
did you put servos in tailplane fred ?
Title: 1/3rd ka8b build log
Post by: Fred on October 20, 2015, 09:04:10 AM
Hey Mick,

I did (saw your email, I'll put your photos later).
I only put one (8Kgs), but Ronan here did put 2.
I can't remember what the others did, but roughly, the choice is yours :)
Title: 1/3rd ka8b build log
Post by: Fred on October 20, 2015, 09:10:26 AM
Mick's photos :)

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

(http://www.gliderireland.net/forum/images/uploads/Fred/IMG_0880hglk.JPG)
Title: 1/3rd ka8b build log
Post by: mick a on October 20, 2015, 10:13:59 AM
thanks fred :)
Title: 1/3rd ka8b build log
Post by: Fred on November 19, 2015, 12:08:09 PM
Hi Mick,

Here are a few photos of the area you are looking for.
From Ronan's Ka8 (thanks Ronan :) )

(http://www.gliderireland.net/forum/images/uploads/Fred/IMGP3271.jpg)

(http://www.gliderireland.net/forum/images/uploads/Fred/IMGP3273.jpg)

(http://www.gliderireland.net/forum/images/uploads/Fred/IMGP3275.JPG)
Title: 1/3rd ka8b build log
Post by: mick a on November 19, 2015, 12:39:52 PM
great thanks fred and ronan
i was trying to do in one piece
.... doh !!!
small pieces
was it 3 mm balsa ?
Title: 1/3rd ka8b build log
Post by: Fred on November 19, 2015, 13:17:05 PM
Hmm, looks like it on the photos.
More to sand :)
Title: 1/3rd ka8b build log
Post by: mick a on November 19, 2015, 14:41:35 PM
hahaha
love sanding 😕😕
also thinking of a removable fin/ rudder
for transport etc so not to smash off
you think this is viable on this one
have a few ideas how to do
if you have any it would be a great help
thanks for all your help as always
mick
Title: 1/3rd ka8b build log
Post by: Fred on November 19, 2015, 15:03:33 PM
Yeah, good thinking on the removeable one.

You can do it by a system of rod (piano wire) going along the rudder, on the hinge line if you see what I mean.
Photos from Internet to illustrate :)

(http://www.airtech-rc.com/fr/imagesmodeles/sun3/derive1.jpg)

(http://www.retroplane.net/berfalkmaquet/derive1.jpg)

(http://www.retroplane.net/berfalkmaquet/derive2.jpg)

(http://static.rcgroups.net/forums/attachments/1/9/7/9/5/9/a2223156-54-Removable%20Rudder.jpg?d=1229301098)

(http://www.generalhobby.com/images/allmodels2/yak-55m-60cc-arf-common-39.jpg)

(http://www.generalhobby.com/images/allmodels2/yak-55m-60cc-arf-common-50.jpg)

I'm sure you get the idea  :D
Title: 1/3rd ka8b build log
Post by: mick a on November 19, 2015, 17:54:22 PM
thats a great idea
i was also thinking of being able to remove the fin including rudder
like you would tailplane
just trying to think how to secure
Title: Re: 1/3rd ka8b build log
Post by: mick a on December 31, 2015, 17:57:06 PM
heres a bit more progress
Title: Re: 1/3rd ka8b build log
Post by: Fred on January 01, 2016, 09:53:51 AM
Tail looks good Mick!  :)
Title: Re: 1/3rd ka8b build log
Post by: mick a on January 01, 2016, 11:08:27 AM
thanks fred , a bit blurred pics ... to much xmas brandy
Title: Re: 1/3rd ka8b build log
Post by: mick a on January 01, 2016, 11:09:59 AM
heres a couple more of the canopy frame
Title: Re: 1/3rd ka8b build log
Post by: Fred on January 01, 2016, 11:24:21 AM
Very good!
You did master the brass welding technique!
Title: Re: 1/3rd ka8b build log
Post by: mick a on January 01, 2016, 11:32:45 AM
yea eventually, thanks to your guidence fred
just trying to work out how to make a lock for it
hinges done ,
hopefully start on wings next week
Title: Re: 1/3rd ka8b build log
Post by: mick a on January 01, 2016, 19:05:32 PM
just finished the hinges and canopy catch
tried to copy full size as close as poss --and it works 👍👍👍😁
Title: Re: 1/3rd ka8b build log
Post by: Fred on January 02, 2016, 18:24:22 PM
Very nice Mick!

I was going to suggest a piece of tape, but your way looks a bit more professional!  ::)
Title: Re: 1/3rd ka8b build log
Post by: mick a on January 02, 2016, 18:27:00 PM
thanks fred
i will make a sliding window in canopy , and then can just push locked with finger
having said that , belt and braces with tape as well 😄😄👍
Title: Re: 1/3rd ka8b build log
Post by: mick a on January 07, 2016, 02:46:56 AM
finished the  canopy today and made yet another catch , this one works better
and is more scale like
and it all fits 👍👍👍👍
Title: Re: 1/3rd ka8b build log
Post by: mario on January 07, 2016, 18:10:26 PM
Good job  8)
Title: Re: 1/3rd ka8b build log
Post by: Fred on January 07, 2016, 23:13:57 PM
Agree! Really looking good Mick!  8) 8) :-*
Title: Re: 1/3rd ka8b build log
Post by: mick a on January 07, 2016, 23:29:44 PM
thanks fred
you started it with the excellent cutting and plan 👍
i need to make a sliding window now
got a couple if ideas , but if anyone can
shine a light or done one all help
greatly appreciated
cheers
mick
Title: Re: 1/3rd ka8b build log
Post by: mick a on January 11, 2016, 11:56:44 AM
here goes , wing started last night
as you will see from pics building board too small !!!
will secure rott area then slide along , should be ok
Title: Re: 1/3rd ka8b build log
Post by: mick a on January 11, 2016, 11:57:48 AM
 :-X
Title: Re: 1/3rd ka8b build log
Post by: mick a on January 23, 2016, 22:25:01 PM
a bit more progress
and a pleasing fit of one wing  :D :)
Title: Re: 1/3rd ka8b build log
Post by: Fred on January 26, 2016, 08:03:45 AM
Pfffeeww, it fits :)

Nice job Mick! And this canopy really does look good!  :-*
Title: Re: 1/3rd ka8b build log
Post by: mick a on January 27, 2016, 21:08:10 PM
thanks fred
good cutting is what makes it easy ....lol
how did you hinge the ailerons , did you use covering along top ?
Title: Re: 1/3rd ka8b build log
Post by: Fred on January 28, 2016, 10:07:27 AM
 ::) ::) Thanks

For the hinging, I did it like a pig and used Blenderm.
One of those "I do it quick, I'll do it properly later" jobs  :-[
Title: Re: 1/3rd ka8b build log
Post by: mick a on January 28, 2016, 17:04:39 PM
hahaha
it looks ok on pics and vid and it works
i dint suppose anyone has any idea how to make a sliding
window for canopy ?
i have a few ideas and trying but if  anyone has done one
any help is more than welcome
also what size are full size ones
if anyone knows 😀😀😀
Title: Re: 1/3rd ka8b build log
Post by: Fred on January 28, 2016, 20:02:26 PM
I have an article somewhere about making them.
When you think of it, it's only 2 bits of plastic used as a rail, and the window itself :)
I try to find it!

Alternatively, you can buy them :)
Here is the Topmodel one: http://www.topmodelcz.cz/index.php?&desktop_back=eshop&action_back=&id_back=0&desktop=eshop&action=zbozi_detail&id=12957
But you will have the same with Graupner, MPX etc I believe.

Fred
Title: Re: 1/3rd ka8b build log
Post by: mick a on January 28, 2016, 20:36:02 PM
thanks fred
prob being over fussy , have tried with the plastic rails and will just have to bolt together
as any glue just marks them ,
will try oce more or order from topmodelz :)))
Title: Re: 1/3rd ka8b build log
Post by: mick a on February 11, 2016, 22:32:18 PM
hi gents
just finished cockpi
Title: Re: 1/3rd ka8b build log
Post by: mick a on February 11, 2016, 22:33:18 PM
seems to have squashed pics  :'(
Title: Re: 1/3rd ka8b build log
Post by: johnfireball on February 11, 2016, 23:58:17 PM
Looks great, very realistic.
Title: Re: 1/3rd ka8b build log
Post by: mick a on February 21, 2016, 22:41:18 PM
her is first put together at our winter projects night
Title: Re: 1/3rd ka8b build log
Post by: Spanner on May 05, 2016, 00:37:32 AM
Hi Mick
How is the Ka8 coming on? Have you any more photos of your progress it is looking great so far. I am working on one myself at present and have the Fuss and tail-plane almost finished and ready for covering. I will hopefully get to start on the wings shortly and I will post some photos very soon.
Can you advise if you managed to source a 1/3 scale sliding window for the canopy I need to install one on mine in order to have access to open the canopy latch.

Keep up the good work

Joe
Title: Re: 1/3rd ka8b build log
Post by: mick a on May 05, 2016, 22:23:58 PM
hi
thanks for the intrest , its been on hold for a while , due to house move and apperently more important jobs like decorating and hanging curtains 😫😫😫😫
hope to get back into it this weekend , i just need to sheet top of wings and air brakes and aileron
and cover
i didnt get a sliding window , couldnt make one that was good enough and bought on didnt look right
i open canopy by a thin sheet of brass sliding between canopy and frame to puch the magnectic handle away
will try to find pics
be great to see you progress
Title: Re: 1/3rd ka8b build log
Post by: mick a on May 05, 2016, 22:28:22 PM
hope these pics help
the catch connects to a magnet in fuse
will take some more pics to explain more
Title: Re: 1/3rd ka8b build log
Post by: Spanner on May 06, 2016, 23:44:00 PM
Thanks for the update Mike hope you get to progress the model soon.
Did you try the windows from Topmodel the ones they have listed are the wrong scale and would probably look wrong or did you source them somewhere else. I have made a spring loaded canopy latch as in full size and will probable have to do as you suggest and make up a tool to open and close via the small gap between canopy and fuselage.

Look forward to seeing progress on the model soon.

Joe
Title: Re: 1/3rd ka8b build log
Post by: mick a on May 07, 2016, 06:14:14 AM
hi
i tried the glider uk one
i had about 4 attempts at making one but just never looked good ( glad i didnt cut into canopy )
spring catch is good
hope to see pics of your progress
Title: Re: 1/3rd ka8b build log
Post by: Spanner on May 16, 2016, 01:33:13 AM
Hi Mick
Will check my kit tomorrow and let you know what I find,
Title: Re: 1/3rd ka8b build log
Post by: mick a on August 20, 2016, 18:31:52 PM
finally frame done
just got to cover now
it looks like going to be solartex as cant find diatex anywhere
Title: Re: 1/3rd ka8b build log
Post by: mick a on September 03, 2016, 20:15:44 PM
just starting the covering
Title: Re: 1/3rd ka8b build log
Post by: mick a on September 03, 2016, 20:17:06 PM
one more
Title: Re: 1/3rd ka8b build log
Post by: conny on September 05, 2016, 09:23:51 AM
It look's nice, like that colour combo.
Title: Re: 1/3rd ka8b build log
Post by: Fred on September 07, 2016, 15:31:30 PM
Looking good Mick!
Are you going for the one from your full size club?  :-*
Title: Re: 1/3rd ka8b build log
Post by: mick a on September 07, 2016, 23:05:05 PM
yea a bit same colours but , no side window
and slightly different design , as not much good at masking and spraying so making it simple ...😄😄😄
Title: Re: 1/3rd ka8b build log
Post by: mick a on October 29, 2016, 22:57:10 PM
finally finished
all ready for maiden
Title: Re: 1/3rd ka8b build log
Post by: mick a on October 29, 2016, 22:59:02 PM
a couple more
Title: Re: 1/3rd ka8b build log
Post by: johnfireball on October 30, 2016, 23:20:04 PM
Really nice. love the vintage colours. Good luck with maiden.

John.
Title: Re: 1/3rd ka8b build log
Post by: billscottni on October 31, 2016, 18:40:10 PM
beautiful looking model. Health to fly it
Title: Re: 1/3rd ka8b build log
Post by: mick a on October 31, 2016, 19:55:46 PM
thankyou gents
fingers xd all goes well
Title: Re: 1/3rd ka8b build log
Post by: Fred on November 16, 2016, 15:24:31 PM
Very nice build again Mick! Like the color scheme!!

First flight planned soon?  :-*
Title: Re: 1/3rd ka8b build log
Post by: mick a on January 28, 2017, 17:30:51 PM
fanally maiden of ka8b
very pleased , although i didnt fly it , didnt trust myself , although nothing to worry about
thanks fred for a great model
Title: Re: 1/3rd ka8b build log
Post by: Fred on January 28, 2017, 17:46:59 PM
Congratulations for the successful first flight!!  :-*
Looks like the launch went without any issues, and the color scheme suit it very well (I like it a lot!)

No airbrakes for the landings? Seems very touchy on the elevator when going to land.
Title: Re: 1/3rd ka8b build log
Post by: mick a on January 28, 2017, 19:00:20 PM
one of the airbrakes would not open in flight
but would open on ground , might need stronger servos
so kept close
Title: Re: 1/3rd ka8b build log
Post by: Spanner on January 28, 2017, 19:34:23 PM
Hi Mick
Congrats on the successful maiden, I must say the model looks very well and I also like the colours. Hope you have many a long and enjoyable flights with it.
What servos have you used to operate the air brakes? Could it be that something is binding on the brakes when they are being pushed back by the airflow? Let me know what you find just in case I have a similar issue to resolve on mine prior to painting.

Joe
Title: Re: 1/3rd ka8b build log
Post by: mick a on January 28, 2017, 21:24:58 PM
hi joe
thanks for the compliment
it flew lovely with only needing 3 clicks of down elevator , just to make it penetrate
as fred said a bit heavier is better
it flies as full size one -sedate
i used savox mini metal gear servos for airbrakes , but like you said when wind blowing against
just not strong enough
they work fine on ground and workshop
so going to do some surgery and use standard size but stronger , or might even go servoless units
and put the thin ply top on to match wing
Title: Re: 1/3rd ka8b build log
Post by: Fred on January 30, 2017, 20:27:35 PM
HHmmmm, before doing big surgery, I would try to give more room for the airbrakes to open, might be a simple as that. If you have 1mm around the airbrakes free, make it 2! Try to blow air on the wing, and see where exactly is the problem.

I am using 2 mini servos, and airbrakes are opening just fine on mine, but I had to open a bit more at the end of the airbrakes to operate properly (I think I have a 3mm gap)
Title: Re: 1/3rd ka8b build log
Post by: mick a on January 30, 2017, 20:59:50 PM
thanks fred
will try that first
Title: Re: 1/3rd ka8b build log
Post by: Fred on March 26, 2017, 08:50:57 AM
Hey Mick,

Got your message, will sort you out today! 👍
Title: Re: 1/3rd ka8b build log
Post by: mick a on March 27, 2017, 00:41:56 AM
thanks fred
star as ever
Title: Re: 1/3rd ka8b build log
Post by: mick a on August 13, 2017, 23:15:58 PM
hi
here is video of ka8 doing its maiden on tow , had lots of airtime on slope
but first time towed , tow plane is wot 4 extreme with dle 40 twin

Title: Re: 1/3rd ka8b build log
Post by: mick a on August 13, 2017, 23:22:28 PM
sorry here is link
https://vimeo.com/229495476