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-   -   Kingtech JMB jets 3m PC-21? (https://www.rcuniverse.com/forum/rc-jets-120/11635288-kingtech-jmb-jets-3m-pc-21-a.html)

ltc 12-30-2016 07:19 PM

Kingtech JMB jets 3m PC-21?
 
Built up wood/film construction, TP motor mount, 2 piece wings, 2 piece fuselage, bigger than Skymaster PC-21?
https://kingtechturbine.lu/PC-21-Red-Sheme_1

Does anyone know who builds it or anything else about it?

ltc 01-01-2017 04:36 PM

3 Attachment(s)
Received some pictures from the manufacturer ...

ltc 01-01-2017 04:38 PM

3 Attachment(s)
...

ltc 01-01-2017 04:40 PM

Video
https://m.youtube.com/watch?v=cNqbVyZ9K60
Nice takeoff and landing speeds, they state 9kg RTF, about half the weight of a Skymaster PC21 but the same size.

Neil Guildford 05-09-2018 07:21 AM

I have just started assembling mine and wondered if anyone has a photo of the underneath showing where the horns should be fitted to make sure they fix to hard points in the aileron and flap?
Thank you

Neil Guildford 05-11-2018 11:37 PM

Another thing....I was planning on keeping the wing in two halves, has anyone else done that?

ltc 05-12-2018 08:25 AM


Originally Posted by Neil Guildford (Post 12430377)
I have just started assembling mine and wondered if anyone has a photo of the underneath showing where the horns should be fitted to make sure they fix to hard points in the aileron and flap?
Thank you

Did you email Jean Marc?
I think he offers a ready to cover version. Perhaps photos of that version will show the hard point locations?

Neil Guildford 05-12-2018 09:54 AM

That’s true and a good idea.
I decided to carry on in the hope of finding a decent fixing and all worked out fine.
photo attached.https://cimg2.ibsrv.net/gimg/www.rcu...26639c95e.jpeg

ltc 05-12-2018 10:44 AM

How did you find it?
Held it up to a light or very small pin pushed into surface?
I like the paint on the wheel well...nice touch

Neil Guildford 05-12-2018 11:43 AM

Thanks, I think I’ll paint the inside of the fuselage green as well.
I made up all of the supplied linkages and fitted the servos to the mounts leaving little choice of where to fit the horns. One of the screws holding the flap horn on nearest the hinge needs to be replaced with a longer one.

CR Tech 05-13-2018 06:57 AM

Where are these kits available from ?

chrisi f-18 05-13-2018 11:17 AM

Pc21
 
Hi the kit is in Stock in the Shop on kingtechturbine.lu
Greets chris

ltc 05-13-2018 04:27 PM


Originally Posted by CR Tech (Post 12431572)
Where are these kits available from ?

I bought mine from Jean Marc at Kingtech Luxembourg.
The only shipping method at the time was air.
Yes, it was expensive ;)

CR Tech 05-14-2018 04:37 AM

Thank you I have found it. Very pricey when converted to my local currency. Maybe for next years budget as this years budget is already taking a pounding at month 5.

Neil Guildford 05-14-2018 10:52 AM

https://cimg7.ibsrv.net/gimg/www.rcu...8f3766550.jpeg
When doing the second wing I wasn’t as lucky and the flap was hollow where I needed to fit the horn.
To get around this I made a hole in the centre and filled the area with hysol before reassembling.

Neil Guildford 05-15-2018 12:05 AM

I would recommend checking for slip in the control rods. A couple of my control rod end could slip off the rod with little force. This proved to be because the rods are varied in thickness and some too thin for use.
I have replaced all of the rods with M3 studding.https://cimg5.ibsrv.net/gimg/www.rcu...59085b1bf.jpeg

Neil Guildford 05-15-2018 08:23 AM

Kingtech 60 TP offered into the model and a Sebart Avanti combined kero and smoke tank placed on the CG. Now to decide whether to remove the canopy to switch on and refuel or put them on the https://cimg6.ibsrv.net/gimg/www.rcu...0e46b492b.jpeg
https://cimg9.ibsrv.net/gimg/www.rcu...a196d6a57.jpeg
https://cimg1.ibsrv.net/gimg/www.rcu...9e2966d65.jpeg
outside.

ravill 05-16-2018 12:02 PM

Someone needs to import this one to the USA.

ltc 05-17-2018 04:09 PM


Originally Posted by ravill (Post 12432592)
Someone needs to import this one to the USA.

I believe Jean-Marc looked into that, no luck
I just bit the bullet and paid air freight, no other option was available.

Neil Guildford 05-22-2018 11:37 PM

Cowl now cut and TP60 mounted. Painting the inside of the fuselage took a few hours but I’m pleased with the finish.https://cimg2.ibsrv.net/gimg/www.rcu...803fc5706.jpeghttps://cimg3.ibsrv.net/gimg/www.rcu...a4ff41b58.jpeg
https://cimg4.ibsrv.net/gimg/www.rcu...cb3a73146.jpeg

Andrew Bird 05-23-2018 12:15 AM

Nice job Neil - looking forward to seeing it at the field. If your OCD can't handle the exhaust angles I'm pretty sure you could fix it with a hammer ;)

Or have a whack at cutting them to angle like the full size. Funnily enough I'm spending the day at the Pilatus factory tomorrow if you need any close up shots.

Neil Guildford 05-23-2018 12:47 AM

Funnily enough, the exhaust angle is bothering me, especially the way one hangs out further than the other due to the offset. Photos would be great! :)

JP-1 05-23-2018 02:43 AM

Neil,
Looks very nice, I have ocd about unpainted internal surfaces too.

Alistair Powers

ltc 05-24-2018 05:17 PM

Are you concerned about heat build up with the K60 vs the K45?
A lot of people paint the inside of the nose with BVM heat paint ... which is boring white, I admit.

Neil Guildford 05-24-2018 10:18 PM

I hadn’t really thought about the heat issue as the turbine itself is further back in the nose. I’ll have a think and maybe just monitor it when I first run it up.


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