Go Back  RCU Forums > RC Airplanes > RC Jets
Reload this Page >

PAUL GRAY JAS GRIPEN

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

PAUL GRAY JAS GRIPEN

Old 06-30-2008, 05:46 PM
  #1  
wiking
Senior Member
Thread Starter
 
wiking's Avatar
 
Join Date: Sep 2003
Location: Stockholm, SWEDEN
Posts: 102
Likes: 0
Received 0 Likes on 0 Posts
Default PAUL GRAY JAS GRIPEN

Hi guys!
Does some one remember the C.G on a Paul Grey (PMPJETS) ducted fan Jas Gripen?

Regards
Per Andersson



http://jetsweden.com



Attached Thumbnails Click image for larger version

Name:	Wu61966.jpg
Views:	82
Size:	76.0 KB
ID:	981584  
Old 07-01-2008, 07:30 AM
  #2  
GrayUK
Senior Member
 
GrayUK's Avatar
 
Join Date: Oct 2003
Location: Dunstable, UNITED KINGDOM
Posts: 3,598
Likes: 0
Received 0 Likes on 0 Posts
Default RE: PAUL GREY JAS GRIPEN

HI

It was PMP not PJP.

However, by coincedence, PJP do now own the moulds!
I am not sure exactly, but around 25mm in front of the main UC rings a bell.
I will check when i get home to see if i still have a copy of the old drawings or instructions.

Paul Gray
Old 07-01-2008, 03:29 PM
  #3  
wiking
Senior Member
Thread Starter
 
wiking's Avatar
 
Join Date: Sep 2003
Location: Stockholm, SWEDEN
Posts: 102
Likes: 0
Received 0 Likes on 0 Posts
Default RE: PAUL GREY JAS GRIPEN

Thank you Paul for your reply, sorry about the name(Grey)and PJP
I try to help a friend that still fly ducted fans and he have a "PMP" JAS and we have notice that it flies like the real bird on its test flight
if you have the C.G to much backwards


Regards
Per Andersson

http://jetsweden.com



Old 07-01-2008, 03:44 PM
  #4  
Kevin_W
My Feedback: (1)
 
Join Date: Mar 2002
Location: Carrollton, TX
Posts: 1,254
Likes: 0
Received 0 Likes on 0 Posts
Default RE: PAUL GREY JAS GRIPEN

I am flying one that I converted to turbine power.
When I get home I will see if I can find the CG info for you.
Attached Thumbnails Click image for larger version

Name:	Zx70592.jpg
Views:	103
Size:	64.4 KB
ID:	982226   Click image for larger version

Name:	Jf11781.jpg
Views:	84
Size:	61.7 KB
ID:	982227  
Old 07-01-2008, 04:49 PM
  #5  
wiking
Senior Member
Thread Starter
 
wiking's Avatar
 
Join Date: Sep 2003
Location: Stockholm, SWEDEN
Posts: 102
Likes: 0
Received 0 Likes on 0 Posts
Default RE: PAUL GREY JAS GRIPEN

Okay! thank you Kevin.



Regards
Per Andersson

http://jetsweden.com
Old 08-04-2008, 02:43 PM
  #6  
tångarne
Junior Member
 
Join Date: Feb 2008
Location: Diö, SWEDEN
Posts: 14
Likes: 0
Received 0 Likes on 0 Posts
Default RE: PAUL GREY JAS GRIPEN

Hi Guys!
I´m waiting to see if someone can give me an answer about the CG for the PMP Jas please.
Regards Tobias Sjögren
Old 08-06-2008, 12:31 PM
  #7  
GrayUK
Senior Member
 
GrayUK's Avatar
 
Join Date: Oct 2003
Location: Dunstable, UNITED KINGDOM
Posts: 3,598
Likes: 0
Received 0 Likes on 0 Posts
Default RE: PAUL GREY JAS GRIPEN

I am unable to locate the drawings and instructions.
As i recall the tanks are behind the cg.
If that is so then the starting point for you with the tanks FULL, is 25 to 30 mm in front of the uc leg.

Regards

Paul Gray
Old 08-06-2008, 01:06 PM
  #8  
tångarne
Junior Member
 
Join Date: Feb 2008
Location: Diö, SWEDEN
Posts: 14
Likes: 0
Received 0 Likes on 0 Posts
Default RE: PAUL GRAY JAS GRIPEN

Hello Paul!

Thank you ivé got the Cg about 25 mm in front of main uc with the legs out.
I hope the wheather will be on my side this weekend so i can do a testflight.

Many thanks
Regards Tobias Sjögren
Old 08-06-2008, 02:35 PM
  #9  
GrayUK
Senior Member
 
GrayUK's Avatar
 
Join Date: Oct 2003
Location: Dunstable, UNITED KINGDOM
Posts: 3,598
Likes: 0
Received 0 Likes on 0 Posts
Default RE: PAUL GRAY JAS GRIPEN

Do not use large throws on the elevons. No more than 5mm, if you do not feel happy with that set up rates so you can switch to it if you need to.

Good luck

Paul
Old 08-06-2008, 02:54 PM
  #10  
tångarne
Junior Member
 
Join Date: Feb 2008
Location: Diö, SWEDEN
Posts: 14
Likes: 0
Received 0 Likes on 0 Posts
Default RE: PAUL GRAY JAS GRIPEN

Hello!
The first flight was almost like the real bird to much elevons now i got 5-6 mm on dualrate and its was perfekt.
The man Lasse Palm did the tesflight for me and i just tested in the air but next time i will do by my self.

I will hope shes flying like my Trim aircraft F20 after adjusment of CG but not so fast in landings.

Thanks again Paul i Will hope i could get an turbine someday.[sm=spinnyeyes.gif]

Regards Tobias Sjögren
http://jetsweden.com
Old 08-06-2008, 03:29 PM
  #11  
GrayUK
Senior Member
 
GrayUK's Avatar
 
Join Date: Oct 2003
Location: Dunstable, UNITED KINGDOM
Posts: 3,598
Likes: 0
Received 0 Likes on 0 Posts
Default RE: PAUL GRAY JAS GRIPEN

It flys really well.
Good luck [8D]

Paul
Old 02-21-2009, 11:24 AM
  #12  
tom.laird
 
tom.laird's Avatar
 
Join Date: Jun 2004
Location: Uphall, Scotland, UNITED KINGDOM
Posts: 139
Likes: 0
Received 0 Likes on 0 Posts
Default RE: PAUL GRAY JAS GRIPEN

Hi Tobias,
I am thinking about buying one of these which has come up for sale. Could you give me some idea of the take-off distance please? We take-off on tarmac and land on grass.
I'd also be interested to know the life expectancyof the plug, and the fuel consumption / flight time.
best regards
Tom Laird
Old 02-21-2009, 11:41 AM
  #13  
tångarne
Junior Member
 
Join Date: Feb 2008
Location: Diö, SWEDEN
Posts: 14
Likes: 0
Received 0 Likes on 0 Posts
Default RE: PAUL GRAY JAS GRIPEN

Hi Tom!
I have stated and landed on grass without problems i neded about 80 meters on grass berfore it goes of.
Iwill recomend tarmac because the landinggears in wing is not very strong, i dont have to repair yet but i see my legs have bent backwards a bit.
Ivé use Mc Coy Mc9 plug and straight 80/20 fuel on a os 91 with Bwm pipe.
Ivé had to change plug after 15 flights but the plug where ok . Just saftey
Ivé got to tanks about 325 cc and it will be 7-8 minutes flying on full throttle and it´s fuel to take a another lap to land.
Sorry for my bad english [&:]
Regards Tobias
Old 02-21-2009, 11:53 AM
  #14  
tom.laird
 
tom.laird's Avatar
 
Join Date: Jun 2004
Location: Uphall, Scotland, UNITED KINGDOM
Posts: 139
Likes: 0
Received 0 Likes on 0 Posts
Default RE: PAUL GRAY JAS GRIPEN

Hi Tobias,
Thanks for the quick reply. We have 66m Tarmac and about 85 metres grass www.modelclub.org so i guess we are okay for take-off.

I believe landings can be quite slow with the nose up.

This model has an OS91 but not sure which pipe.

br

Tom


Old 02-21-2009, 01:05 PM
  #15  
tångarne
Junior Member
 
Join Date: Feb 2008
Location: Diö, SWEDEN
Posts: 14
Likes: 0
Received 0 Likes on 0 Posts
Default RE: PAUL GRAY JAS GRIPEN

Hi again!
No problem with lenght for you it will lift on 35-40 meters on tarmac and it´s really slow in landings.
Ivé got an Trim aircraft F20 DF landing are very fast with it at least an 75 kmh maybe more with flaps slower speed it´s stalling [:@]
Happy landings with your JAS.
I´m planning for an Einar johnsson Viggen for season2010 much work with landing gear [:@]But it´s my favorit of swedish jets.
Good luck
Reegards Tobias
Old 02-22-2009, 04:36 AM
  #16  
GrayUK
Senior Member
 
GrayUK's Avatar
 
Join Date: Oct 2003
Location: Dunstable, UNITED KINGDOM
Posts: 3,598
Likes: 0
Received 0 Likes on 0 Posts
Default RE: PAUL GRAY JAS GRIPEN

Gents
This is all good stuff.
I would like to see some more pictures??

Paul
Old 02-22-2009, 06:16 AM
  #17  
tångarne
Junior Member
 
Join Date: Feb 2008
Location: Diö, SWEDEN
Posts: 14
Likes: 0
Received 0 Likes on 0 Posts
Default RE: PAUL GRAY JAS GRIPEN

Hi Paul!
I have try to load up some pictures but i´m not clever to understand how i will do.
I will try again.
Reegards Tobias
Old 02-22-2009, 07:40 AM
  #18  
tom.laird
 
tom.laird's Avatar
 
Join Date: Jun 2004
Location: Uphall, Scotland, UNITED KINGDOM
Posts: 139
Likes: 0
Received 0 Likes on 0 Posts
Default RE: PAUL GRAY JAS GRIPEN

Hi,
At the bottom the box where you type in your message, there is a "click here to upload images and files". That takes you to a dialogue box where you can browse to the pictures you want to upload.
cheers
Tom
Old 02-22-2009, 12:25 PM
  #19  
tångarne
Junior Member
 
Join Date: Feb 2008
Location: Diö, SWEDEN
Posts: 14
Likes: 0
Received 0 Likes on 0 Posts
Default RE: PAUL GRAY JAS GRIPEN

Hi Tom !
I think ivé got upp some pictures.
Ivé got som ducted fans but my Rafale wasen´t in my computer .
My Jas need some new paint and i hope our winter give some time to fix that.
Pic1 is an thorpe brothers F20 tigershark scratchbuilt with an rossi81 and ramtech.
Pic2 is an Budjet Swedish construction for Df beeginners scratchbuilt with rossi 105 and ramtech from begining this one got an boss fan and rossi 90 built in the early 90s.
Pic3 Theres my Jas with os91 and ramtech and F20 tigershark with rossi90 and ramtech
i will take an picture on my Rafale and show it for you.
Some day when i got rich i will got an turbine and convert someone of them.
Reegards Tobias
Attached Thumbnails Click image for larger version

Name:	Zx70776.jpg
Views:	80
Size:	57.8 KB
ID:	1142034   Click image for larger version

Name:	Bw73396.jpg
Views:	94
Size:	69.4 KB
ID:	1142035   Click image for larger version

Name:	Zf87739.jpg
Views:	94
Size:	77.3 KB
ID:	1142036  
Old 03-01-2009, 12:25 PM
  #20  
tångarne
Junior Member
 
Join Date: Feb 2008
Location: Diö, SWEDEN
Posts: 14
Likes: 0
Received 0 Likes on 0 Posts
Default RE: PAUL GRAY JAS GRIPEN

Hi Tom!
Have you picked upp your Jas?
I want to see pictures of it when you got it.
Cheers
Tobias
Old 03-01-2009, 02:08 PM
  #21  
tom.laird
 
tom.laird's Avatar
 
Join Date: Jun 2004
Location: Uphall, Scotland, UNITED KINGDOM
Posts: 139
Likes: 0
Received 0 Likes on 0 Posts
Default RE: PAUL GRAY JAS GRIPEN

Hi,
Not yet - still debating with myself.
cheers
Tom
Old 03-01-2009, 02:51 PM
  #22  
tångarne
Junior Member
 
Join Date: Feb 2008
Location: Diö, SWEDEN
Posts: 14
Likes: 0
Received 0 Likes on 0 Posts
Default RE: PAUL GRAY JAS GRIPEN

Hi again!
Its a nice plane to fly and it wi´ll be simple to convert to turbine theres lot of space when outletduct is gone .
When i´m will be rich iwi´ll buy a turbine .
If you want you can have EDF but its almost same price like the real thing.
cheers
Tobias
Old 03-05-2009, 06:05 PM
  #23  
tom.laird
 
tom.laird's Avatar
 
Join Date: Jun 2004
Location: Uphall, Scotland, UNITED KINGDOM
Posts: 139
Likes: 0
Received 0 Likes on 0 Posts
Default RE: PAUL GRAY JAS GRIPEN

Here it is. It manily needs painted and a bit of work to the cockpit catch.
Attached Thumbnails Click image for larger version

Name:	Mj24697.jpg
Views:	117
Size:	89.5 KB
ID:	1150970  
Old 03-07-2009, 08:17 AM
  #24  
tångarne
Junior Member
 
Join Date: Feb 2008
Location: Diö, SWEDEN
Posts: 14
Likes: 0
Received 0 Likes on 0 Posts
Default RE: PAUL GRAY JAS GRIPEN

Hi!
It looks good you just have easy part to get it ready for flight.
I havent found a panting scheme to my Jas so it´s easy to see in sky.
I had a dream to paint it yellow and blue with red stripes so it´s easy to see.
But my friends told i´m an idiot no Gripen was painted like that[&:]
Show me more when you have painted it.
Cheers Tobias
Old 03-07-2009, 08:02 PM
  #25  
tom.laird
 
tom.laird's Avatar
 
Join Date: Jun 2004
Location: Uphall, Scotland, UNITED KINGDOM
Posts: 139
Likes: 0
Received 0 Likes on 0 Posts
Default RE: PAUL GRAY JAS GRIPEN

Hi,
In Scotland the sky is grey 90% of the time, so grey on grey is not to clever. I believe it is more important to see the model in the sky

cheers

Tom

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information

Copyright © 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.