RC Jets Discuss RC jets in this forum plus rc turbines and ducted fan power systems

HOBBYKING L59 for JETCAT P20

Reply
Old 09-20-2012, 10:08 PM
  #1
POWER JET
Thread Starter
 
Join Date: Oct 2009
Location: Athens, GREECE
Posts: 218
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default HOBBYKING L59 for JETCAT P20

Here's my little L59 with a Jetcat P20 installed. This was bought from Hobbyking for $230 shipped.The air frame isn't too bad.
I will edit this tomorrow with a ready to fly weight, but I'm estimating it at about 3.300gr empty.

More photos coming soon....

Attached Thumbnails
Click image for larger version

Name:	Yw68067.jpg
Views:	443
Size:	45.8 KB
ID:	1803425   Click image for larger version

Name:	Je98731.jpg
Views:	326
Size:	51.1 KB
ID:	1803426   Click image for larger version

Name:	Wb74276.jpg
Views:	321
Size:	42.6 KB
ID:	1803427   Click image for larger version

Name:	Le92793.jpg
Views:	305
Size:	49.4 KB
ID:	1803428  
POWER JET is offline  
Reply With Quote
Old 09-20-2012, 10:32 PM
  #2
DominicM
 
DominicM's Avatar
 
Join Date: Nov 2002
Location: Hampshire, , UNITED KINGDOM
Posts: 1,524
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: HOBBYKING L59 for JETCAT P20

I've read good things about the airframe as well. Seems HK's main problem is getting it shipped without incurring damage because of the poor packaging. Have they come to their senses and sent it double boxed?
DominicM is offline  
Reply With Quote
Old 09-20-2012, 11:38 PM
  #3
Henke Torphammar
 
Henke Torphammar's Avatar
 
Join Date: Oct 2002
Location: Ljungby, SWEDEN
Posts: 1,814
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: HOBBYKING L59 for JETCAT P20

Empty weight of the kit?
Henke Torphammar is offline  
Reply With Quote
Old 09-21-2012, 07:07 AM
  #4
POWER JET
Thread Starter
 
Join Date: Oct 2009
Location: Athens, GREECE
Posts: 218
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: HOBBYKING L59 for JETCAT P20

The model is about 1.100 kgr when it comes out of the box.
No,it is'n double box.My plane has only a little crack on the nose but i will hysol it.Not a big deal!
Here is some photos..it's almost ready for take off..
Attached Thumbnails
Click image for larger version

Name:	Tq48941.jpg
Views:	360
Size:	81.1 KB
ID:	1803493   Click image for larger version

Name:	Yt61724.jpg
Views:	193
Size:	68.6 KB
ID:	1803494   Click image for larger version

Name:	Ci97988.jpg
Views:	387
Size:	59.1 KB
ID:	1803495   Click image for larger version

Name:	Pj18487.jpg
Views:	335
Size:	345.2 KB
ID:	1803496  
POWER JET is offline  
Reply With Quote
Old 09-21-2012, 07:51 AM
  #5
drdoom
Moderator
 
Join Date: Apr 2002
Location: Belton , MO
Posts: 3,122
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: HOBBYKING L59 for JETCAT P20

I may copy some of your install. Is that pipe a Single wall pipe?
drdoom is offline  
Reply With Quote
Old 09-21-2012, 09:20 AM
  #6
TimWatson
 
Join Date: Apr 2012
Location: , , UNITED KINGDOM
Posts: 346
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: HOBBYKING L59 for JETCAT P20

Hey thats not fair. I am at about the same point with mine also a P20. In my view this is the best P20 model yet

TimWatson is offline  
Reply With Quote
Old 09-21-2012, 12:47 PM
  #7
POWER JET
Thread Starter
 
Join Date: Oct 2009
Location: Athens, GREECE
Posts: 218
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: HOBBYKING L59 for JETCAT P20


Quote:
ORIGINAL: drdoom

I may copy some of your install. Is that pipe a Single wall pipe?
Yes it's a single wall pipe.
POWER JET is offline  
Reply With Quote
Old 09-21-2012, 12:53 PM
  #8
POWER JET
Thread Starter
 
Join Date: Oct 2009
Location: Athens, GREECE
Posts: 218
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: HOBBYKING L59 for JETCAT P20


Quote:
ORIGINAL: TimWatson

Hey thants not fair. I am at about the same point with mine also a P20. In my view this is the best P20 model yet

It's the most scale plane that you can install the P20.It's large enough,you can see it easily from a big distance.Instead of the Habu that you can lose it from your sight in no time!
And it's very beautiful.
POWER JET is offline  
Reply With Quote
Old 09-21-2012, 12:54 PM
  #9
POWER JET
Thread Starter
 
Join Date: Oct 2009
Location: Athens, GREECE
Posts: 218
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: HOBBYKING L59 for JETCAT P20

The weight is 3,260 gr empty.I believe is a good weight for the size of the plane and for the P20  
POWER JET is offline  
Reply With Quote
Old 09-21-2012, 02:22 PM
  #10
Vettster
 
Vettster's Avatar
 
Join Date: Sep 2007
Location: Beeton, Ontario, CANADA
Posts: 1,214
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: HOBBYKING L59 for JETCAT P20

Hanz..Your weight is Very good! Mine is an EDF for the time being..but it weighs 7.6lbs without retracts, and flys amazingly well.

My only recommendation to you guys building this plane, is to glass the wings where they join top and bottom. You dont really want to trust some kids glue job or even the glue they used do you? There have been reports of the CMP Hawk wing separating at the wing joint. It comes pre-glued like the L-59

The flight envelope of the plane is simply amazing! Will do next to nothing in a 10khm wind or can be blisteringly fast on the downwind(edf) for a top speed of 165mph for my plane.

Check out this video of how slow she can fly.
http://www.youtube.com/watch?v=w_I13okGH4c

Trevor

Vettster is offline  
Reply With Quote
Old 09-21-2012, 10:54 PM
  #11
TimWatson
 
Join Date: Apr 2012
Location: , , UNITED KINGDOM
Posts: 346
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: HOBBYKING L59 for JETCAT P20

The only bit I am ascratching my head about at the moment is the Canopy and how to attach it so that it will be secure but also quick and easy to remove at the field
TimWatson is offline  
Reply With Quote
Old 09-21-2012, 11:09 PM
  #12
POWER JET
Thread Starter
 
Join Date: Oct 2009
Location: Athens, GREECE
Posts: 218
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: HOBBYKING L59 for JETCAT P20


Quote:
ORIGINAL: TimWatson

The only bit I am ascratching my head about at the moment is the Canopy and how to attach it so that it will be secure but also quick and easy to remove at the field
You don't have to!!I will use transparent duct tape!!
POWER JET is offline  
Reply With Quote
Old 09-21-2012, 11:17 PM
  #13
POWER JET
Thread Starter
 
Join Date: Oct 2009
Location: Athens, GREECE
Posts: 218
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: HOBBYKING L59 for JETCAT P20

Quote:
ORIGINAL: Vettster

Hanz..Your weight is Very good! Mine is an EDF for the time being..but it weighs 7.6lbs without retracts, and flys amazingly well.

My only recommendation to you guys building this plane, is to glass the wings where they join top and bottom. You dont really want to trust some kids glue job or even the glue they used do you? There have been reports of the CMP Hawk wing separating at the wing joint. It comes pre-glued like the L-59



Trevor

Yes,i've notice that and i already did it!Thanks for the recomendation!
POWER JET is offline  
Reply With Quote
Old 09-22-2012, 02:25 AM
  #14
Henke Torphammar
 
Henke Torphammar's Avatar
 
Join Date: Oct 2002
Location: Ljungby, SWEDEN
Posts: 1,814
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: HOBBYKING L59 for JETCAT P20

Check this out http://www.rcuniverse.com/forum/m_11.../anchor/tm.htm

If your P20 does the stated 5.25lb of thrust you still need too optimize your setup to keep the thrust when installed. It's very easy to reduce thrust if you install the pipe wrong.

[youtube]http://www.youtube.com/watch?v=adO9NiI7edA[/youtube]
Henke Torphammar is offline  
Reply With Quote
Old 09-22-2012, 11:39 AM
  #15
POWER JET
Thread Starter
 
Join Date: Oct 2009
Location: Athens, GREECE
Posts: 218
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: HOBBYKING L59 for JETCAT P20


The distance from the exhaust of turbine to the tail of the plane is almost 15 cm.The distance is very little so i install the exhaust just to protect the plane from the big heat and to align the exhaust gas.
If it was up to me, not to install the pipe,i will not be install her just for weight matter!
POWER JET is offline  
Reply With Quote
Old 09-22-2012, 12:02 PM
  #16
Henke Torphammar
 
Henke Torphammar's Avatar
 
Join Date: Oct 2002
Location: Ljungby, SWEDEN
Posts: 1,814
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: HOBBYKING L59 for JETCAT P20


Quote:
ORIGINAL: POWER JET


The distance from the exhaust of turbine to the tail of the plane is almost 15 cm.The distance is very little so i install the exhaust just to protect the plane from the big heat and to align the exhaust gas.
If it was up to me, not to install the pipe,i will not be install her just for weight matter!

you say it your self in "no excuses" :-) it's very easy to make 1lb of thrust vanish(!)
Henke Torphammar is offline  
Reply With Quote
Old 09-22-2012, 01:22 PM
  #17
Vettster
 
Vettster's Avatar
 
Join Date: Sep 2007
Location: Beeton, Ontario, CANADA
Posts: 1,214
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: HOBBYKING L59 for JETCAT P20

Quote:
ORIGINAL: TimWatson

The only bit I am ascratching my head about at the moment is the Canopy and how to attach it so that it will be secure but also quick and easy to remove at the field
Tim.. I thru away that cheep cockpit area. It has no structural strength at all. I replaced it with a light ply sheet and bulkhead that a latch could hold on to. I put a dowel up front.
Attached Thumbnails
Click image for larger version

Name:	Ig11648.jpg
Views:	225
Size:	104.7 KB
ID:	1803837   Click image for larger version

Name:	Cx76226.jpg
Views:	133
Size:	73.8 KB
ID:	1803838   Click image for larger version

Name:	Ns43755.jpg
Views:	129
Size:	76.3 KB
ID:	1803839  
Vettster is offline  
Reply With Quote
Old 09-22-2012, 07:58 PM
  #18
POWER JET
Thread Starter
 
Join Date: Oct 2009
Location: Athens, GREECE
Posts: 218
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: HOBBYKING L59 for JETCAT P20



you say it your self in "no excuses" :-) it's very easy to make 1lb of thrust vanish(!)
[/quote]

Yes of course,i know that's is very easy to make 1lb of thrust vanish ,but I did not excuses my self.
The exhaust is 12cm long and the turbine gases are free flowing!
I believe i have all of the 5.25lbs of thrust of my P20!



POWER JET is offline  
Reply With Quote
Old 09-23-2012, 09:25 AM
  #19
POWER JET
Thread Starter
 
Join Date: Oct 2009
Location: Athens, GREECE
Posts: 218
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: HOBBYKING L59 for JETCAT P20



I did the maiden today.Success!!!



The plane was very  fast for the size of it! I'm very impressed!! Very stable in flight but very steep!



The control surface movements are too much in all surfaces.The manufacturer gives 15-20 mm on AIL and ELEV,me i have them on 15 mm but it was too much!Needs lower movements!



I think the best scale plane for the P20!!

POWER JET is offline  
Reply With Quote
Old 09-23-2012, 11:36 AM
  #20
TimWatson
 
Join Date: Apr 2012
Location: , , UNITED KINGDOM
Posts: 346
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: HOBBYKING L59 for JETCAT P20

Glad you had a successful maiden.

What do you mean. 'Very Steep'
TimWatson is offline  
Reply With Quote
Old 09-23-2012, 02:07 PM
  #21
Vettster
 
Vettster's Avatar
 
Join Date: Sep 2007
Location: Beeton, Ontario, CANADA
Posts: 1,214
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: HOBBYKING L59 for JETCAT P20

Quote:
ORIGINAL: POWER JET



I did the maiden today.Success!!!



The plane was very fast for the size of it! I'm very impressed!! Very stable in flight but very steep!



The control surface movements are too much in all surfaces.The manufacturer gives 15-20 mm on AIL and ELEV,me i have them on 15 mm but it was too much!Needs lower movements!



I think the best scale plane for the P20!!

GOOD STUFF!

Ohhh I think we're going to need to see some video[8D]

Any chance you can GPS that puppy? Wonder how fast she's moving out.

When people ask how it flys..I always tell them that its just a Super Fast Cessna
Vettster is offline  
Reply With Quote
Old 09-23-2012, 09:41 PM
  #22
POWER JET
Thread Starter
 
Join Date: Oct 2009
Location: Athens, GREECE
Posts: 218
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: HOBBYKING L59 for JETCAT P20


[/quote]
GOOD STUFF!

Ohhh I think we're going to need to see some video[8D]

Any chance you can GPS that puppy? Wonder how fast she's moving out.

When people ask how it flys..I always tell them that its just a Super Fast Cessna
[/quote]

Video very soon!! I will try to have also an on board camera.
All you unbelievers ,you will be suprised as i did!!
Be patient!!...


POWER JET is offline  
Reply With Quote
Old 09-23-2012, 09:55 PM
  #23
POWER JET
Thread Starter
 
Join Date: Oct 2009
Location: Athens, GREECE
Posts: 218
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: HOBBYKING L59 for JETCAT P20


Quote:
ORIGINAL: TimWatson

Glad you had a successful maiden.

What do you mean. 'Very Steep'

How can i say that...bluntness,brusqueness!

Thats,because of the big surface movements that the manufacturer gives.If i decreased them i believe that it will be fine!
I didn't have the luck to do a second flight because the nose gear has broken.
Very little glue on the nose gear reception.!
Mavbe the chinese boy who build my plane had to go for break and drink sake!
POWER JET is offline  
Reply With Quote
Old 09-25-2012, 01:55 AM
  #24
CrocEnd
 
Join Date: Feb 2003
Location: Darwin, AUSTRALIA
Posts: 682
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: HOBBYKING L59 for JETCAT P20

Henke Hi

So what pipe distance was the end result for the P-20

CrocEnd
CrocEnd is offline  
Reply With Quote
Old 09-25-2012, 03:42 AM
  #25
Henke Torphammar
 
Henke Torphammar's Avatar
 
Join Date: Oct 2002
Location: Ljungby, SWEDEN
Posts: 1,814
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: HOBBYKING L59 for JETCAT P20

Quote:
ORIGINAL: CrocEnd

Henke Hi

So what pipe distance was the end result for the P-20

CrocEnd
Hi,

We found it differs depending on which setup you run. Diameter and length of the pipe, bellmouth shape etc. If you want to optimize the setup the only way is to test it your self. As the test bench only costs €99 includeing all you need it's not much to argue about. Neither Grumanias, jetcats or Lamberts recomendations were the best in our testing. I have not tested a P20 yet but are soon to do so. Test were done with a Kolibri turbine. You can also use the test bench for making a linear thrust to stick throtthe curve.


This was not right in our test.

Henke Torphammar is offline  
Reply With Quote
Reply


Thread Tools
Search this Thread
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -8. The time now is 06:11 AM.