RC Pattern Flying Discuss all topics pertaining to RC Pattern Flying in this forum.

ARIXTRA Build Thread by ISAAC NAJARY

Reply
Old 10-28-2012, 03:39 AM
  #101
najary
Thread Starter
 
najary's Avatar
 
Join Date: May 2003
Location: Rishon le-zion, ISRAEL
Posts: 995
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: ARIXTRA Build Thread by ISAAC NAJARY

More
Attached Thumbnails
Click image for larger version

Name:	Qn38533.jpg
Views:	75
Size:	44.9 KB
ID:	1815511   Click image for larger version

Name:	Yu63851.jpg
Views:	73
Size:	38.7 KB
ID:	1815512   Click image for larger version

Name:	Tz66877.jpg
Views:	74
Size:	69.1 KB
ID:	1815513   Click image for larger version

Name:	Jd87012.jpg
Views:	70
Size:	50.1 KB
ID:	1815514   Click image for larger version

Name:	Qo40686.jpg
Views:	67
Size:	36.3 KB
ID:	1815515  

Click image for larger version

Name:	Xs59420.jpg
Views:	67
Size:	48.8 KB
ID:	1815516   Click image for larger version

Name:	Lq37902.jpg
Views:	62
Size:	26.0 KB
ID:	1815517   Click image for larger version

Name:	Qk22917.jpg
Views:	63
Size:	49.8 KB
ID:	1815518  
najary is offline  
Reply With Quote
Old 10-28-2012, 08:16 AM
  #102
stmdk
 
stmdk's Avatar
 
Join Date: Oct 2007
Location: jerusalem, ISRAEL
Posts: 69
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: ARIXTRA Build Thread by ISAAC NAJARY

Great work Issac !!
stmdk is offline  
Reply With Quote
Old 10-31-2012, 08:03 AM
  #103
najary
Thread Starter
 
najary's Avatar
 
Join Date: May 2003
Location: Rishon le-zion, ISRAEL
Posts: 995
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: ARIXTRA Build Thread by ISAAC NAJARY

Saving 12 gram - (24.3-12.3), Carbon 2.5 mm
Attached Thumbnails
Click image for larger version

Name:	Lj24105.jpg
Views:	89
Size:	66.9 KB
ID:	1816421   Click image for larger version

Name:	Pk30602.jpg
Views:	88
Size:	66.2 KB
ID:	1816422   Click image for larger version

Name:	Xc79815.jpg
Views:	98
Size:	109.5 KB
ID:	1816423   Click image for larger version

Name:	Uo35284.jpg
Views:	87
Size:	81.4 KB
ID:	1816424   Click image for larger version

Name:	Bm74464.jpg
Views:	109
Size:	86.2 KB
ID:	1816425  

Click image for larger version

Name:	Kb43690.jpg
Views:	94
Size:	89.5 KB
ID:	1816426   Click image for larger version

Name:	Wt59282.jpg
Views:	102
Size:	68.6 KB
ID:	1816427   Click image for larger version

Name:	Lg16243.jpg
Views:	98
Size:	98.6 KB
ID:	1816428   Click image for larger version

Name:	Zf87890.jpg
Views:	112
Size:	104.3 KB
ID:	1816429   Click image for larger version

Name:	Dx66057.jpg
Views:	89
Size:	38.5 KB
ID:	1816430  

Click image for larger version

Name:	Jv14972.jpg
Views:	112
Size:	52.5 KB
ID:	1816431   Click image for larger version

Name:	Ev24100.jpg
Views:	102
Size:	52.4 KB
ID:	1816432  
najary is offline  
Reply With Quote
Old 10-31-2012, 08:08 AM
  #104
najary
Thread Starter
 
najary's Avatar
 
Join Date: May 2003
Location: Rishon le-zion, ISRAEL
Posts: 995
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: ARIXTRA Build Thread by ISAAC NAJARY

More
Attached Thumbnails
Click image for larger version

Name:	Tr51647.jpg
Views:	101
Size:	53.0 KB
ID:	1816433   Click image for larger version

Name:	Bw72939.jpg
Views:	106
Size:	58.3 KB
ID:	1816434   Click image for larger version

Name:	Ch95762.jpg
Views:	109
Size:	91.6 KB
ID:	1816435   Click image for larger version

Name:	Dx67265.jpg
Views:	102
Size:	62.1 KB
ID:	1816436   Click image for larger version

Name:	Uf52469.jpg
Views:	117
Size:	113.1 KB
ID:	1816437  

najary is offline  
Reply With Quote
Old 10-31-2012, 01:51 PM
  #105
nonstoprc
 
nonstoprc's Avatar
 
Join Date: Sep 2003
Location: Central, TX
Posts: 2,452
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: ARIXTRA Build Thread by ISAAC NAJARY

Cool. I like the CA method to hold the mount plate in place during the cure.
nonstoprc is offline  
Reply With Quote
Old 10-31-2012, 02:39 PM
  #106
rm
 
rm's Avatar
 
Join Date: Nov 2002
Location: ohio
Posts: 518
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: ARIXTRA Build Thread by ISAAC NAJARY

What kind of bit are you using to cut the carbon? How long does it last?
rm is online now  
Reply With Quote
Old 11-01-2012, 10:47 PM
  #107
najary
Thread Starter
 
najary's Avatar
 
Join Date: May 2003
Location: Rishon le-zion, ISRAEL
Posts: 995
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: ARIXTRA Build Thread by ISAAC NAJARY


Quote:
ORIGINAL: rm

What kind of bit are you using to cut the carbon? How long does it last?
Here it is: http://www.dremel.com/en-us/Accessor....aspx?pid=9904

It lasts quite long.

Best regards,

Isaac Najary
najary is offline  
Reply With Quote
Old 11-03-2012, 10:02 AM
  #108
najary
Thread Starter
 
najary's Avatar
 
Join Date: May 2003
Location: Rishon le-zion, ISRAEL
Posts: 995
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: ARIXTRA Build Thread by ISAAC NAJARY

Here is a structure with I developed after deep thinking about the forces applied on the landing gear mount.

The all idea here is about making the landing gear mount as light as possible but still strong enough that you can be secure that in hard landing it won't broke.

It is a very frustrate feeling to brake the landing gear mount as a result to a sudden strong gust of wind especially in competition.

I have this structure in my Osmose and in my Xigris and it was proven as strong to survive over 2,000 landings with naturally some of them were pretty hard landings.

The total weight, including gluing to the fuselage and 4 screw-nuts is 30 gram (728-698).

Best regards,

Isaac Najary
Attached Thumbnails
Click image for larger version

Name:	Jh15499.jpg
Views:	82
Size:	49.5 KB
ID:	1817137   Click image for larger version

Name:	Up47958.jpg
Views:	105
Size:	48.2 KB
ID:	1817138   Click image for larger version

Name:	Wb76390.jpg
Views:	107
Size:	40.7 KB
ID:	1817139   Click image for larger version

Name:	Oi14769.jpg
Views:	111
Size:	83.7 KB
ID:	1817140   Click image for larger version

Name:	Ny26170.jpg
Views:	114
Size:	44.8 KB
ID:	1817141  

Click image for larger version

Name:	Yw68957.jpg
Views:	102
Size:	61.5 KB
ID:	1817142   Click image for larger version

Name:	Ql33900.jpg
Views:	111
Size:	46.3 KB
ID:	1817143   Click image for larger version

Name:	Ns45506.jpg
Views:	115
Size:	45.8 KB
ID:	1817144  
najary is offline  
Reply With Quote
Old 11-03-2012, 10:06 AM
  #109
najary
Thread Starter
 
najary's Avatar
 
Join Date: May 2003
Location: Rishon le-zion, ISRAEL
Posts: 995
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: ARIXTRA Build Thread by ISAAC NAJARY

More
Attached Thumbnails
Click image for larger version

Name:	Pm34697.jpg
Views:	114
Size:	105.6 KB
ID:	1817146   Click image for larger version

Name:	Gb89641.jpg
Views:	88
Size:	56.4 KB
ID:	1817147   Click image for larger version

Name:	Fk16854.jpg
Views:	101
Size:	64.2 KB
ID:	1817148   Click image for larger version

Name:	Dx67932.jpg
Views:	105
Size:	97.5 KB
ID:	1817149   Click image for larger version

Name:	Am73461.jpg
Views:	108
Size:	69.4 KB
ID:	1817150  

najary is offline  
Reply With Quote
Old 11-03-2012, 10:10 AM
  #110
najary
Thread Starter
 
najary's Avatar
 
Join Date: May 2003
Location: Rishon le-zion, ISRAEL
Posts: 995
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: ARIXTRA Build Thread by ISAAC NAJARY

Saving 2.6 gram (3.8-2.5)X2
Attached Thumbnails
Click image for larger version

Name:	Ge96866.jpg
Views:	87
Size:	70.7 KB
ID:	1817159   Click image for larger version

Name:	Wr54090.jpg
Views:	81
Size:	72.2 KB
ID:	1817160   Click image for larger version

Name:	Kp33890.jpg
Views:	86
Size:	41.0 KB
ID:	1817161   Click image for larger version

Name:	Fz73488.jpg
Views:	104
Size:	68.8 KB
ID:	1817162   Click image for larger version

Name:	Sq46954.jpg
Views:	94
Size:	40.1 KB
ID:	1817163  

Click image for larger version

Name:	Je10692.jpg
Views:	102
Size:	124.8 KB
ID:	1817164   Click image for larger version

Name:	Gl20003.jpg
Views:	102
Size:	116.9 KB
ID:	1817165   Click image for larger version

Name:	Au57491.jpg
Views:	100
Size:	121.2 KB
ID:	1817166  
najary is offline  
Reply With Quote
Old 11-03-2012, 10:13 AM
  #111
najary
Thread Starter
 
najary's Avatar
 
Join Date: May 2003
Location: Rishon le-zion, ISRAEL
Posts: 995
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: ARIXTRA Build Thread by ISAAC NAJARY

More
Attached Thumbnails
Click image for larger version

Name:	Ro41898.jpg
Views:	67
Size:	37.7 KB
ID:	1817167   Click image for larger version

Name:	To44254.jpg
Views:	77
Size:	130.5 KB
ID:	1817168   Click image for larger version

Name:	Ej12837.jpg
Views:	75
Size:	34.9 KB
ID:	1817169   Click image for larger version

Name:	Ex69260.jpg
Views:	86
Size:	123.5 KB
ID:	1817170   Click image for larger version

Name:	Tr51313.jpg
Views:	69
Size:	52.1 KB
ID:	1817171  

Click image for larger version

Name:	Yt61388.jpg
Views:	91
Size:	27.9 KB
ID:	1817172   Click image for larger version

Name:	Di11299.jpg
Views:	75
Size:	38.3 KB
ID:	1817173  
najary is offline  
Reply With Quote
Old 11-05-2012, 04:13 PM
  #112
Jetdesign
 
Jetdesign's Avatar
 
Join Date: May 2008
Location: Mason, OH
Posts: 7,050
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: ARIXTRA Build Thread by ISAAC NAJARY

Isaac,
Thanks for your continued dedication to teaching us how to properly build/assemble these airplanes. I have a feeling you will be working on air dams and removing and installing material in the chin cowl compartment. Can you comment on any guidelines you might have, or what drives you to remove material from the areas that you do?

I have a Composite Arf Integral that I'm going to be building over the winter. I think there is some opportunity to remove material under the cowl, but having zero experience with composite planes, I am anxious about where to cut and how much to remove.

Thanks,
Joe M.
Jetdesign is offline  
Reply With Quote
Old 11-07-2012, 09:35 AM
  #113
najary
Thread Starter
 
najary's Avatar
 
Join Date: May 2003
Location: Rishon le-zion, ISRAEL
Posts: 995
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: ARIXTRA Build Thread by ISAAC NAJARY

Quote:
ORIGINAL: gaRCfield

Isaac,
Thanks for your continued dedication to teaching us how to properly build/assemble these airplanes. I have a feeling you will be working on air dams and removing and installing material in the chin cowl compartment. Can you comment on any guidelines you might have, or what drives you to remove material from the areas that you do?

I have a Composite Arf Integral that I'm going to be building over the winter. I think there is some opportunity to remove material under the cowl, but having zero experience with composite planes, I am anxious about where to cut and how much to remove.

Thanks,
Joe M.
Hi Joe,

I always have these guidelines on my mind:

1. About every part of the model I ask my self if it should stay the way it is or I can remove some material concerning all the forces that are applies on that part.

2. I do not underestimate any gram. Many years ago someone told me that a gram plus a gram plus a gram ... thousand times is one kilo and I never forget that.

Best regards,

Isaac Najary
najary is offline  
Reply With Quote
Old 11-07-2012, 09:46 AM
  #114
najary
Thread Starter
 
najary's Avatar
 
Join Date: May 2003
Location: Rishon le-zion, ISRAEL
Posts: 995
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: ARIXTRA Build Thread by ISAAC NAJARY

More
Attached Thumbnails
Click image for larger version

Name:	Us54579.jpg
Views:	73
Size:	44.8 KB
ID:	1818311   Click image for larger version

Name:	Hc92696.jpg
Views:	74
Size:	46.8 KB
ID:	1818312   Click image for larger version

Name:	Wb75996.jpg
Views:	73
Size:	34.3 KB
ID:	1818313   Click image for larger version

Name:	Jd87023.jpg
Views:	66
Size:	37.0 KB
ID:	1818314   Click image for larger version

Name:	Yk66832.jpg
Views:	70
Size:	60.4 KB
ID:	1818315  

Click image for larger version

Name:	Mk27328.jpg
Views:	67
Size:	70.9 KB
ID:	1818316   Click image for larger version

Name:	Wr54229.jpg
Views:	66
Size:	75.8 KB
ID:	1818317   Click image for larger version

Name:	Hm22548.jpg
Views:	69
Size:	40.0 KB
ID:	1818318   Click image for larger version

Name:	Oi15167.jpg
Views:	86
Size:	77.3 KB
ID:	1818319  
najary is offline  
Reply With Quote
Old 11-07-2012, 09:55 AM
  #115
najary
Thread Starter
 
najary's Avatar
 
Join Date: May 2003
Location: Rishon le-zion, ISRAEL
Posts: 995
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: ARIXTRA Build Thread by ISAAC NAJARY

More
Attached Thumbnails
Click image for larger version

Name:	Ur52447.jpg
Views:	61
Size:	34.4 KB
ID:	1818320   Click image for larger version

Name:	Hc94328.jpg
Views:	64
Size:	39.8 KB
ID:	1818321   Click image for larger version

Name:	Xc77891.jpg
Views:	73
Size:	82.7 KB
ID:	1818322   Click image for larger version

Name:	Tn33096.jpg
Views:	67
Size:	53.3 KB
ID:	1818323   Click image for larger version

Name:	Dp83757.jpg
Views:	64
Size:	30.2 KB
ID:	1818324  

Click image for larger version

Name:	Ge95854.jpg
Views:	70
Size:	90.5 KB
ID:	1818325   Click image for larger version

Name:	Bw72277.jpg
Views:	67
Size:	81.4 KB
ID:	1818326   Click image for larger version

Name:	Kp34724.jpg
Views:	89
Size:	101.7 KB
ID:	1818327  
najary is offline  
Reply With Quote
Old 11-07-2012, 09:57 AM
  #116
najary
Thread Starter
 
najary's Avatar
 
Join Date: May 2003
Location: Rishon le-zion, ISRAEL
Posts: 995
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: ARIXTRA Build Thread by ISAAC NAJARY

More
Attached Thumbnails
Click image for larger version

Name:	Sp45496.jpg
Views:	65
Size:	34.2 KB
ID:	1818328   Click image for larger version

Name:	Nj25418.jpg
Views:	63
Size:	44.3 KB
ID:	1818329   Click image for larger version

Name:	Af89825.jpg
Views:	72
Size:	32.3 KB
ID:	1818330  
najary is offline  
Reply With Quote
Old 11-07-2012, 09:59 AM
  #117
najary
Thread Starter
 
najary's Avatar
 
Join Date: May 2003
Location: Rishon le-zion, ISRAEL
Posts: 995
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: ARIXTRA Build Thread by ISAAC NAJARY

More
Attached Thumbnails
Click image for larger version

Name:	Pm35163.jpg
Views:	64
Size:	27.0 KB
ID:	1818331   Click image for larger version

Name:	Up48737.jpg
Views:	72
Size:	33.0 KB
ID:	1818332  
najary is offline  
Reply With Quote
Old 11-07-2012, 11:17 AM
  #118
Rune
 
Join Date: Apr 2003
Location: Vikersund, NORWAY
Posts: 725
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: ARIXTRA Build Thread by ISAAC NAJARY

Nice work Najary
how thick is the carbon plate you have made in the front??? and areyou going to have a support to the motor back?
Rune is offline  
Reply With Quote
Old 11-07-2012, 09:31 PM
  #119
najary
Thread Starter
 
najary's Avatar
 
Join Date: May 2003
Location: Rishon le-zion, ISRAEL
Posts: 995
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: ARIXTRA Build Thread by ISAAC NAJARY


Quote:
ORIGINAL: Rune

Nice work Najary
how thick is the carbon plate you have made in the front??? and areyou going to have a support to the motor back?
Hi Rune,

It is 2.5 mm carbon plate.

It will no be a support to the motor back.

Best regards,

Isaac Najary
najary is offline  
Reply With Quote
Old 11-08-2012, 03:50 PM
  #120
nonstoprc
 
nonstoprc's Avatar
 
Join Date: Sep 2003
Location: Central, TX
Posts: 2,452
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: ARIXTRA Build Thread by ISAAC NAJARY

Najary,

Wonder permanently gluing the chin cowl to the fuse is an option once the landing gear work is done. Seems that could increase the rigidity and may save some grams.

Enjoy your every building step!
nonstoprc is offline  
Reply With Quote
Old 11-08-2012, 11:39 PM
  #121
najary
Thread Starter
 
najary's Avatar
 
Join Date: May 2003
Location: Rishon le-zion, ISRAEL
Posts: 995
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: ARIXTRA Build Thread by ISAAC NAJARY

More
Attached Thumbnails
Click image for larger version

Name:	Qo40784.jpg
Views:	70
Size:	95.3 KB
ID:	1818742   Click image for larger version

Name:	Up49013.jpg
Views:	88
Size:	47.9 KB
ID:	1818743   Click image for larger version

Name:	Qv56329.jpg
Views:	76
Size:	114.4 KB
ID:	1818744   Click image for larger version

Name:	Rp43995.jpg
Views:	71
Size:	50.6 KB
ID:	1818745   Click image for larger version

Name:	Mh19577.jpg
Views:	64
Size:	78.5 KB
ID:	1818746  

najary is offline  
Reply With Quote
Old 11-08-2012, 11:41 PM
  #122
najary
Thread Starter
 
najary's Avatar
 
Join Date: May 2003
Location: Rishon le-zion, ISRAEL
Posts: 995
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: ARIXTRA Build Thread by ISAAC NAJARY

Saving 17 gram - (724-707)
Attached Thumbnails
Click image for larger version

Name:	Ca80353.jpg
Views:	66
Size:	51.2 KB
ID:	1818747   Click image for larger version

Name:	Pk30615.jpg
Views:	72
Size:	56.1 KB
ID:	1818748   Click image for larger version

Name:	Gl20050.jpg
Views:	81
Size:	76.3 KB
ID:	1818749   Click image for larger version

Name:	Bu58065.jpg
Views:	86
Size:	76.4 KB
ID:	1818750   Click image for larger version

Name:	Ju14172.jpg
Views:	69
Size:	48.6 KB
ID:	1818751  

najary is offline  
Reply With Quote
Old 11-08-2012, 11:46 PM
  #123
najary
Thread Starter
 
najary's Avatar
 
Join Date: May 2003
Location: Rishon le-zion, ISRAEL
Posts: 995
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: ARIXTRA Build Thread by ISAAC NAJARY

More
Attached Thumbnails
Click image for larger version

Name:	If10533.jpg
Views:	65
Size:	101.2 KB
ID:	1818752   Click image for larger version

Name:	Lh18762.jpg
Views:	59
Size:	103.3 KB
ID:	1818753   Click image for larger version

Name:	Ns45048.jpg
Views:	60
Size:	54.3 KB
ID:	1818754   Click image for larger version

Name:	Rl24783.jpg
Views:	65
Size:	35.1 KB
ID:	1818755   Click image for larger version

Name:	Sd44729.jpg
Views:	70
Size:	45.4 KB
ID:	1818756  

Click image for larger version

Name:	Pg62750.jpg
Views:	67
Size:	106.5 KB
ID:	1818757   Click image for larger version

Name:	Ge95422.jpg
Views:	71
Size:	157.2 KB
ID:	1818758   Click image for larger version

Name:	Mh20050.jpg
Views:	69
Size:	134.7 KB
ID:	1818759   Click image for larger version

Name:	Ou49536.jpg
Views:	64
Size:	65.6 KB
ID:	1818760   Click image for larger version

Name:	Ey70726.jpg
Views:	64
Size:	55.6 KB
ID:	1818761  

Click image for larger version

Name:	Lw18815.jpg
Views:	87
Size:	100.7 KB
ID:	1818762   Click image for larger version

Name:	Xo89195.jpg
Views:	66
Size:	49.4 KB
ID:	1818763  
najary is offline  
Reply With Quote
Old 11-09-2012, 12:32 AM
  #124
najary
Thread Starter
 
najary's Avatar
 
Join Date: May 2003
Location: Rishon le-zion, ISRAEL
Posts: 995
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: ARIXTRA Build Thread by ISAAC NAJARY


Quote:
ORIGINAL: nonstoprc

Najary,

Wonder permanently gluing the chin cowl to the fuse is an option once the landing gear work is done. Seems that could increase the rigidity and may save some grams.

Enjoy your every building step!
Hi Nonstoprc,

I considered to do that in my Osmose, and decided not to, because:

1. The chin cowl is very soft and it will not increase much the rigidity.

2. It maybe saves only 2-3 grams.

3. You will no have good access to the motor, the landing gear and to the ESC.

4. The joining between the fuselage and the chin cowl will be problematic as far as the finish is concerned.

Best regards,

Isaac Najary
najary is offline  
Reply With Quote
Old 11-09-2012, 02:49 PM
  #125
mwoytassek
 
Join Date: Sep 2003
Location: cedar rapids, IA
Posts: 83
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: ARIXTRA Build Thread by ISAAC NAJARY

Isaac

This may help in the future. I have been using a Hot Knife to cut in the fuselage just cut slow and let the blade do the work. Very clean and easy to do.

Have a good Day.

Mark

http://www.horizonhobby.com/products...knife-XAC73780
mwoytassek 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 05:53 PM.