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Jilles Smits 1/3 K7 Build

Posted: 16 Jul 2020, 21:36
by calypso22
Hi Everyone, this is my first post so don't expect great things. It is also only my 2nd scale project, I feel the amateur among many professionals, please bear with me. Last October I began building a 1/4 scale Charlesworth Ka7 from Mr Evans, that was maidened with a tow in May, looked really great in the air with that forward sweep, and after much advice from the assembled, the 2 pilots were removed and a little packing placed under the tail. The next three flights were much improved, in fact the vario did begin beeping a couple of times! I took the model home without a scratch and since then the pilots have resumed cockpit duties and a large chunk of lead from the nose has gone to compensate. So with enthusiasm bursting all over I have now taken delivery of another Ka7 but the 1/3 scale this time, again from Cliff. I believe Im the first customer. The fusalage is well under way and requiring all of the bench, its enormous!. Touch wood all is going reasonably smoothly and construction I have found far less complicated than the previous model having lots of click together formers and longerons. Still requiring plenty of thought before the next piece is glued in however....I am really enjoying the build, and having the door to the hangar straight off the kitchen it is easy to slip away for a few minutes while the potatoes are boiling and no one is watching. When I have worked out how to show you a picture I will post again.
John Harvey- Dartmoor Slope Soaring Club

Re: Jilles Smits 1/3 K7 Build

Posted: 16 Jul 2020, 22:12
by Peter Balcombe
John,
When writing your post, there a couple of tabs below the text entry box (Options & Attachments).
Click the Attachments tab & then the Add button to be able to select your required image from your device/PC.
The image should then load & give you a green tick mark. If another symbol then too large or other problem.
Note that the image needs to be sized to no larger than 800 pixels in largest dimension (100k or so max).

I normally add one at a time so that you can see which one causes a problem if any difficulty.
The ‘inline’ option puts the image in the text wherever the text cursor was at the time.
You can enter a useful caption name if you want.
The preview option lets you see what finished post should look like.
Peter

Re: Jilles Smits 1/3 K7 Build

Posted: 16 Jul 2020, 23:17
by calypso22
Many thanks Peter, will check it out, technology and electric things not my thing, I leave it to others to tell what to do as indeed you kindly have.
By the way have we met at the WMSA XCs anytime in the past?
John

Re: Jilles Smits 1/3 K7 Build

Posted: 17 Jul 2020, 08:57
by Peter Balcombe
John, we may have met as Chris Bowles & a few Dartmoor lads used to come to our Open XC comps, but I’ve not been to these for a numbers or years now & I’m afraid I cannot put a face to the name.
Good luck with the build. Jilles’ designs are very good.
Peter

Re: Jilles Smits 1/3 K7 Build

Posted: 18 Jul 2020, 20:02
by calypso22
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First mistake, I deleted my draft..doh! Hopefully you can see my pic of initial fuselage construction. So far all has been reasonably straight forward. I'm right at the aft end now and trying to make sure the fin aligns vertically with the wing seat, hence the clamped on level. I am one for using my eye and if it looks right I reckon it probably isnt far off. I hope that my primary efforts at building scale will inspire other beginners to have a go, this forum certainly shows there are plenty of experienced builders happy to share tips and encouragement in bucket fulls.
John

Re: Jilles Smits 1/3 K7 Build

Posted: 18 Jul 2020, 20:10
by calypso22
I think picture didnt work...try again.
John
P_20200718_162643.jpg

Re: Jilles Smits 1/3 K7 Build

Posted: 04 Aug 2020, 19:39
by calypso22
Hi all, here is a progress report on the Ka7. My first pic showed what I thought was a fuz well on the way to completion. In fact twas a mere skeleton, there was and still is a lot more work envolved..I should have realised. Having said that further construction has been reasonably straight forward and now things are really taking shape. All the .8mm ply cladding is on now and as someone who does not like waste Ive attempted to manage the cutting and jointing but not compromise strength and rigidity. The structure is now the size of a small hen house but remarkedly light..I think!
As before, getting construction in the right order needs thought. I will build the rudder next then offer up to the fin before adding fin .4mm ply sheet to ensure rudder LE is correctly covered by the sheet overlap and movement unobstructed. I have glued balsa sheet between the nose longerons where it was to be clad in ply sheet. This will be sanded, filled and glassed instead, as suggested by Jilles (thanks) in a post about a similar build, sorry can't remember where on SSUK I read it, there is so much info out there!! I hope the pic doesn't break any rules but my other half is trying to be involved and interested. Seriously enjoying lock down!
John
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Re: Jilles Smits 1/3 K7 Build

Posted: 04 Aug 2020, 19:42
by Cliff Evans
Blimey, that's coming on John.

Re: Jilles Smits 1/3 K7 Build

Posted: 04 Aug 2020, 20:16
by calypso22
Thank you Cliff.
John :)

Re: Jilles Smits 1/3 K7 Build

Posted: 30 Aug 2020, 20:33
by Cliff Evans
My 1/3 Jilles K-7 nearing completion thznks to Rich Vale.
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Re: Jilles Smits 1/3 K7 Build

Posted: 03 Sep 2020, 20:29
by calypso22
Cliff, this is the one that was awaiting the paint shop I'm guessing. I know another yellow K7, and that colour flys very well! My JS 1/3 is progressing a little each day with the elevators complete, beautiful structures, and I recently obtained 2 KST wing servos that fit nicely into the tailplane servo trays. The home made release is about to be fitted to the nose block then to the fuz, filled and sanded. I see lots of fabulously covered and painted models with striking designs...would be interested to know how to achieve the basics of a reasonable finish, however it will be some months before the paint brush is needed. Thanks.
John (calypso

Re: Jilles Smits 1/3 K7 Build

Posted: 03 Sep 2020, 23:46
by Cliff Evans
John, hopefully it will end up something like this!
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Re: Jilles Smits 1/3 K7 Build

Posted: 04 Sep 2020, 15:03
by calypso22
WOW!! Now I am inspired, what a fab-u-lous colour scheme, better carry on building.
John

Re: Jilles Smits 1/3 K7 Build

Posted: 04 Sep 2020, 15:08
by calypso22
Cliff, still not 100% sure, is that a model or full size. The wing weight appears modellish....brilliant pic.
John

Re: Jilles Smits 1/3 K7 Build

Posted: 04 Sep 2020, 19:06
by Cliff Evans
calypso22 wrote:
04 Sep 2020, 15:08
Cliff, still not 100% sure, is that a model or full size. The wing weight appears modellish....brilliant pic.
John
Full size!

Re: Jilles Smits 1/3 K7 Build

Posted: 25 Sep 2020, 23:24
by calypso22
Hi to all interested parties, more progress on the K7 build, but not as much as I would have liked..not enough time in the day! The tail department is complete now and I'm reasonably pleased. However I did not pay enough attention to the position of the elevator hinge line/axis and prematurely glued in the Robarts to one side in the incorrect position (in my humble opinion). The elevators still move up and down but not in the 'ball and socket' way if you get what I mean. I may have to revisit this as the build goes by and it gets on my nerves. Still its a lesson learned for next time.
Wings next, thanks Cliff for advice on where to start, unfortunately I have lost your email, can you, or anyone else please offer some words of wisdom here. My bench will just take one wing if I clear the clutter off. My preference is to make each wing in one piece, think it will fit in the Honda. It would be good to improve on the previous K7 wings construction/method which caused me some head scratching with lining up ribs. I have had one plan studying session until my eyes started popping but need more time to understand.
Thanks for looking
John
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Re: Jilles Smits 1/3 K7 Build

Posted: 25 Sep 2020, 23:44
by Cliff Evans
Lay the shear webs flat on the building board and glue a piece of.8mm py over the joint but make sure that you do not go top to bottom as you have to get the spars on. Whilst the web is on the board, glue the bottom spar to web and clamp overnight. you can now slot the ribs onto the web and add the top spar. Easy!

Re: Jilles Smits 1/3 K7 Build

Posted: 26 Sep 2020, 20:40
by calypso22
Thanks for that Cliff, I will get back to you when all becomes clear. I will now put parts to advice and hopefully exclaim '' Of course it's easy and so obvious!''
John

Re: Jilles Smits 1/3 K7 Build

Posted: 11 Oct 2020, 13:26
by Cliff Evans
Richard Vale has been busy with my K7!
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Re: Jilles Smits 1/3 K7 Build

Posted: 11 Oct 2020, 14:35
by Peter Balcombe
Very nice Richard.
Is that rattle can or spray gun application?

Re: Jilles Smits 1/3 K7 Build

Posted: 11 Oct 2020, 17:06
by Cliff Evans
Spay gun!

Re: Jilles Smits 1/3 K7 Build

Posted: 11 Oct 2020, 18:10
by RobbieB
Spay gun!!!

Wot, you did the cat at the same time.................?

Re: Jilles Smits 1/3 K7 Build

Posted: 11 Oct 2020, 20:37
by Cliff Evans
I think I need a new keyboard!

Re: Jilles Smits 1/3 K7 Build

Posted: 11 Oct 2020, 21:16
by Peter Balcombe
Cliff Evans wrote:
11 Oct 2020, 20:37
I think I need a new keyboard!
One with larger keys :lol: :lol:

Re: Jilles Smits 1/3 K7 Build

Posted: 12 Oct 2020, 06:31
by Max Wright
Peter Balcombe wrote:
11 Oct 2020, 21:16
Cliff Evans wrote:
11 Oct 2020, 20:37
I think I need a new keyboard!
One with larger keys :lol: :lol:
. . . and bigger spaces between them . . . :shock: