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Kingtech JMB jets 3m PC-21?

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Kingtech JMB jets 3m PC-21?

Old 04-22-2019, 10:06 PM
  #76  
Neil Guildford
 
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I canít remember exactly, but know I set mine as per the manual I got which only contained a CG and control throws. Iíll try to find it.
Old 04-23-2019, 02:14 PM
  #77  
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A the time of purchase, I had ask JMB about a manuel and he said there wasn't any. And during my last website visit there were no support manuals.
I just sent an email to J-M, asking for the suggested CG.
Old 04-23-2019, 02:51 PM
  #78  
ltc
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Originally Posted by mstpieree93 View Post
A the time of purchase, I had ask JMB about a manuel and he said there wasn't any. And during my last website visit there were no support manuals.
I just sent an email to J-M, asking for the suggested CG.
Here is that JM sent me last November

here the setup

PC-21
CG middle of the wing tube

Ailerons 25mm up/down Expo 35%
Elevator 28mm up/down expo 45%
Ruder 30mm left/right Expo 45%
Flaps 2 Positions 15į - 45į Compensation depth on elevator on 15į 2mm and 45į 4-6mm

Tank 1L 6-8min 1,5L 10-12min
brg
Jean-Marc
Old 04-23-2019, 03:39 PM
  #79  
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Great! Thanks Itc
Old 04-23-2019, 03:48 PM
  #80  
ltc
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Originally Posted by mstpieree93 View Post
Great! Thanks Itc
Happy to help
I should mention that the tank and flight times JM referenced were for a K45TP
Old 04-23-2019, 10:03 PM
  #81  
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I am using a Kingtech 60TP with a 2ltr Avanti tank and get 12 minutes, could probably squeeze 15.
I barely use the smoke as itís not good on the covering.
Old 06-22-2019, 05:27 AM
  #82  
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I have finally maiden my PC-21. Wow! What a plane!
The feel of the plane tracking smoothly in the air is truly great. Can't wait to get a 2nd flight done, and many others for that matter.
https://www.youtube.com/watch?v=dbVq...ature=youtu.be
The quality of the video is somewhat weak, but itís just to provide an idea of how that first flight went.
Old 07-12-2020, 04:39 AM
  #83  
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Does anyone know where I can buy a new nose retract pin from? Its 8mm with a c clip.
Neil
Old 07-12-2020, 07:16 AM
  #84  
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Have you reached out to JMB? He did supply me a part relating to the nose gear last fall (had a prop strike - my error, but no damage to the fuselage).
Old 07-12-2020, 10:42 AM
  #85  
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the gear is from JP
call on Shane from jp on Facebook
Old 07-12-2020, 12:13 PM
  #86  
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Thanks for the responses. I think Iíve found something suitable from Electron for 8.50 Euro.
Old 07-14-2020, 05:01 PM
  #87  
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Digitech, When you say that the gear is from JP, are you using electic retracts? If so, please share the model/make, as I am considering converting from Air to Electric in the near future.
Old 07-14-2020, 09:29 PM
  #88  
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Originally Posted by mstpieree93 View Post
Digitech, When you say that the gear is from JP, are you using electic retracts? If so, please share the model/make, as I am considering converting from Air to Electric in the near future.
just contact JP gears , ask for the JMB PC-21 set...
yes its electric
or thru Facebook
Old 07-15-2020, 12:38 AM
  #89  
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Default Pc-21

JP = JPERKINS (the r/c distributor) of UK?
Old 07-15-2020, 02:37 AM
  #90  
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Excellent. Thanks guys.
Old 07-15-2020, 11:09 AM
  #91  
ltc
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IIRC, the same retracts for the Sebart PC-21 XL are/were used in the JMB Jets PC-21
So you could order those (perhaps from Sebart directly) or a set from Pahl Retracts
Pahl Retracts - Online-Shop

Electron ER-40 would be another option as well.
Old 07-15-2020, 12:45 PM
  #92  
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These Pahl ones seem to just drop in place. I'll be reviewing these options and see which will work best, For the time being, "let's keep flying"! Thanks everyone
Old 08-12-2020, 01:13 PM
  #93  
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Neil Guildford, what pilots and cockpit did you use? Looks good!
Old 08-12-2020, 09:28 PM
  #94  
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I used two vacuumed formed pilots which would normally be sold with a CARF Tucano.
Old 09-04-2020, 04:35 PM
  #95  
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Guys, Here's a short video of my PC-21;
The following users liked this post:
Neil Guildford (09-04-2020)
Old 09-06-2020, 06:09 AM
  #96  
ltc
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Originally Posted by mstpieree93 View Post
Guys, Here's a short video of my PC-21; https://youtu.be/wr6vzoMrudE
congratulations...nice flight
what is your RTF weight?
Old 09-06-2020, 02:50 PM
  #97  
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The weight is 31.75Lbs, or 14.88Kg (including 1.75Lb of batteries), and excluding the weight of 2Lts of Diesel, which is about 2Kg more (nearly 4.5Lbs for fuel).
Old 09-07-2020, 01:27 AM
  #98  
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I'm curious to see if other owners of K-45TP have similar Run Settings, as I would have liked to get closer to the 170,000 RPMs at max throttle.Even if it were getting up to 165K-168K RPMs.

K-45TP settings:
Full pwr = 160 000 RPM
Idle = 50,000 RPM
Max Temp = 0940įc
Accel Delay = 006
Decel Delay = 008
Stab Delay = 100Pumpt Limit = 0412


Old 09-07-2020, 03:34 AM
  #99  
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Originally Posted by mstpieree93 View Post
I'm curious to see if other owners of K-45TP have similar Run Settings, as I would have liked to get closer to the 170,000 RPMs at max throttle.Even if it were getting up to 165K-168K RPMs.

K-45TP settings:
Full pwr = 160 000 RPM
Idle = 50,000 RPM
Max Temp = 0940įc
Accel Delay = 006
Decel Delay = 008
Stab Delay = 100Pumpt Limit = 0412
Each engine are slightly different........and weíre tested at the factory, before shipping....I didnít change anything on mine and it run great....quite a little power house.
Old 10-23-2020, 09:41 PM
  #100  
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hello
what is the lenght of the 5 blades spinner
thank you

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