WWI Era Discuss all your favorite WWI warbirds here!

1/32 scale micro JN-4D

Old 01-19-2015, 08:37 PM
  #1  
Griff Murphey
Member
Thread Starter
 
Join Date: Mar 2013
Posts: 378
Default 1/32 scale micro JN-4D

Just started a 16" span scratchbuilt Jenny. It's based on a plan I found on the Internet, and modified. The only thing I really changed was widening the fuselage by 1/16" to accommodate the Tactic brick from Tower Hobbies. It should have good performance and my primary goal is building it light. Still messing with Flyzone powerplants and receivers for this one.
Griff Murphey is offline  
Old 01-20-2015, 01:48 AM
  #2  
coriolan
Member
 
coriolan's Avatar
 
Join Date: Jul 2010
Location: Canada
Posts: 46
Default

Please post pictures as you progress, is it "sticks&tissue" or a foamy? I assume this Tactic brick:
http://www3.towerhobbies.com/cgi-bin...?&I=LXBPYD&P=0
coriolan is offline  
Old 01-20-2015, 02:22 AM
  #3  
Griff Murphey
Member
Thread Starter
 
Join Date: Mar 2013
Posts: 378
Default

You are correct, sir! Stick and tissue.
Attached Thumbnails Click image for larger version

Name:	image.jpg
Views:	223
Size:	106.0 KB
ID:	179289  
Griff Murphey is offline  
Old 01-20-2015, 03:54 AM
  #4  
coriolan
Member
 
coriolan's Avatar
 
Join Date: Jul 2010
Location: Canada
Posts: 46
Default

Nice!
coriolan is offline  
Old 01-30-2015, 09:50 AM
  #5  
Ronald86
Member
 
Join Date: Jan 2015
Location: San Marcos, CA
Posts: 31
Default

Hard to build kit.
Ronald86 is offline  
Old 02-07-2015, 08:41 PM
  #6  
Griff Murphey
Member
Thread Starter
 
Join Date: Mar 2013
Posts: 378
Default Motor mount

This is scratch built from scaled down plans.

I build a cross bolt through the motor with 1/4"x1/16" basswood strips, assembling them with white glue. Once that's dry, a little sanding to square it up and reinforce with ACC attaching to to the motor

The first strip in is the full length one, in the space between the motor and gearbox.
Attached Thumbnails Click image for larger version

Name:	image.jpg
Views:	182
Size:	66.6 KB
ID:	179514  
Griff Murphey is offline  
Old 02-07-2015, 08:44 PM
  #7  
Griff Murphey
Member
Thread Starter
 
Join Date: Mar 2013
Posts: 378
Default Motor test fit

Here is the motor test fitted. When I took the picture I had not yet realized I needed to thread in the power plug for the brick before gluing in the motor. But thankfully I had just placed the glue!
Attached Thumbnails Click image for larger version

Name:	image.jpg
Views:	182
Size:	73.5 KB
ID:	179515  
Griff Murphey is offline  
Old 02-07-2015, 08:46 PM
  #8  
Griff Murphey
Member
Thread Starter
 
Join Date: Mar 2013
Posts: 378
Default Brick test fitted

Here is the brick test fitted. It barely fits over the battery box.
Attached Thumbnails Click image for larger version

Name:	image.jpg
Views:	182
Size:	67.2 KB
ID:	179516  
Griff Murphey is offline  
Old 02-10-2015, 06:17 PM
  #9  
coriolan
Member
 
coriolan's Avatar
 
Join Date: Jul 2010
Location: Canada
Posts: 46
Default

Very tight installation, looking good so far
coriolan is offline  
Old 03-14-2015, 11:30 PM
  #10  
Griff Murphey
Member
Thread Starter
 
Join Date: Mar 2013
Posts: 378
Default

Covering but I am not happy with the upper surface tissue covering of the wings.
I used some left over Crane tissue from my youngest's left over wedding invitations. It has done well on flat stuff but this is pretty ugly.
Attached Thumbnails Click image for larger version

Name:	image.jpg
Views:	199
Size:	97.7 KB
ID:	179843  
Griff Murphey is offline  
Old 03-14-2015, 11:31 PM
  #11  
Griff Murphey
Member
Thread Starter
 
Join Date: Mar 2013
Posts: 378
Default

Close up. EWWW uglie!! Gotta pull it off, sand, and redo. Arrrgh!!
Attached Thumbnails Click image for larger version

Name:	image.jpg
Views:	133
Size:	75.4 KB
ID:	179844  
Griff Murphey is offline  
Old 03-15-2015, 05:46 PM
  #12  
coriolan
Member
 
coriolan's Avatar
 
Join Date: Jul 2010
Location: Canada
Posts: 46
Default

Is that after shrinking?
coriolan is offline  
Old 03-15-2015, 06:04 PM
  #13  
Griff Murphey
Member
Thread Starter
 
Join Date: Mar 2013
Posts: 378
Default

Yes. I figure I must have not pulled it tight enough when I glue sticked it... Or the Crane tissue is weird-shrinking.... Or a combination of the above plus bad Karma. Also my time has been limited and I was rushing. So now I get to do it over.
Griff Murphey is offline  
Old 04-02-2015, 04:13 AM
  #14  
Griff Murphey
Member
Thread Starter
 
Join Date: Mar 2013
Posts: 378
Default Decals

Made some decals using my HP office jet printer and Testors white decal paper and decal bonder. I copied and adjusted the size of the decal images out of an old profile on the DH-4. The decals are based on a cartoon in the 1918 Barron Field Review, of Col. Charles C. Turner, USMC's Jenny. So yes it is a bit speculative. In April of 1918, Col. Turner took over Barron Field, the southernmost Royal Flying Corps field of the three built in Fort Worth, Texas, by the Brits and Canadians. I will have to trim and rearrange one EGA fuselage roundel to get the Starboard one with the anchor pointing forward. The eagle's head won't be that obvious. I put four layers of decal bonder on the extra oddballs I am not using and I still had chipping of the edges after trimming. I am going to try Crystal Kleer and maybe Pledge (ex-Future floor wax) which has been recommended by plastic modeler friend. Col. Turner was later head of USMC aviation but was killed by the prop when exiting a Sikorsky flying boat in Haiti in 1931.

I am still not happy with my wing covering but have redone it three times even stretching the tissue on my magnet board. Oh well.
Attached Thumbnails Click image for larger version

Name:	image.jpg
Views:	119
Size:	91.2 KB
ID:	180042  
Griff Murphey is offline  
Old 04-13-2015, 06:48 PM
  #15  
Griff Murphey
Member
Thread Starter
 
Join Date: Mar 2013
Posts: 378
Default Detail parts

Made a balsa and basswood radiator but I am a bit concerned about durability as that is the end that gets tweaked. I told impressions of it and an old Renwal tanker figure and made dental acrylic copies. The tanker was molded in mid-yell so I blocked out the open mouth. It will look ok after the acrylic pilot is painted. Will prob add shoulder straps.
Attached Thumbnails Click image for larger version

Name:	image.jpg
Views:	109
Size:	63.9 KB
ID:	180159  
Griff Murphey is offline  
Old 04-13-2015, 06:50 PM
  #16  
Griff Murphey
Member
Thread Starter
 
Join Date: Mar 2013
Posts: 378
Default In final assembly

Here she is awaiting adding details, and final touches.
Attached Thumbnails Click image for larger version

Name:	image.jpg
Views:	143
Size:	103.7 KB
ID:	180160  
Griff Murphey is offline  
Old 05-07-2015, 01:11 AM
  #17  
Griff Murphey
Member
Thread Starter
 
Join Date: Mar 2013
Posts: 378
Default Jenny is done

Well it's finished. I have maidened it, flew ok. I have reset the upper wing to deal with a slight difference in incidence, and I have added some right cant to the motor.

The prop is way too big for scale and precludes ROG takeoff. But it does have plenty of power. Have not weighed it yet. I thought about adding exhausts and other details but for now I am calling it done. With the Williams wheels I had a choice of 3/4" or 1", plans called for 7/8". I think the 1" would look better.
Attached Thumbnails Click image for larger version

Name:	image.jpg
Views:	132
Size:	126.9 KB
ID:	180631  
Griff Murphey is offline  
Old 05-07-2015, 01:12 AM
  #18  
Griff Murphey
Member
Thread Starter
 
Join Date: Mar 2013
Posts: 378
Default

Small wheels, wot? Lots of dihedral for a Jenny, but pictures show the Fort Worth ones were rigged with a lot of dihedral.
Attached Thumbnails Click image for larger version

Name:	image.jpg
Views:	126
Size:	122.4 KB
ID:	180632  

Last edited by Griff Murphey; 05-07-2015 at 04:00 AM.
Griff Murphey is offline  
Old 05-07-2015, 01:23 AM
  #19  
Griff Murphey
Member
Thread Starter
 
Join Date: Mar 2013
Posts: 378
Default

Fort Worth Jenny. I seem to only be able to add one picture per post.
Attached Thumbnails Click image for larger version

Name:	image.jpg
Views:	116
Size:	72.1 KB
ID:	180633  
Griff Murphey is offline  
Old 05-10-2015, 12:20 AM
  #20  
coriolan
Member
 
coriolan's Avatar
 
Join Date: Jul 2010
Location: Canada
Posts: 46
Default

Had the same problem downloading pictures on Wattflyer! Very nice picture in post #18 and what does it weight?
coriolan is offline  
Old 05-10-2015, 08:20 PM
  #21  
Griff Murphey
Member
Thread Starter
 
Join Date: Mar 2013
Posts: 378
Default Size comparison

Here is the Jenny with two well-used old foamy Flyzone WW-1s approx. 1/20 scale, quite diminutive in comparison, but with the same Powerplant.

By the way the SE-5 has 191 flights logged, Dr.1 has 243. I log any flight greater than 30 sec. I really like keeping a log.

Weight is 1.2 Oz. with battery. Factory built Flyzones such as the SE-5 are 1.4 Oz. with battery.
Attached Thumbnails Click image for larger version

Name:	image.jpg
Views:	115
Size:	132.4 KB
ID:	180677  

Last edited by Griff Murphey; 05-13-2015 at 03:41 AM.
Griff Murphey is offline  
Old 05-24-2015, 08:22 PM
  #22  
Griff Murphey
Member
Thread Starter
 
Join Date: Mar 2013
Posts: 378
Default Bigger fin and rudder

The plane as built had a real problem with directional stability. Looking at youtubes of other RC Jennies, I think I can say that all of them have much higher and wider vertical tails. I just tested the model in way too much wind-5-7 mph, and it us now steady as a rock and no wallowing. I think the vertical tail as presented on those plans is actually a bit under scale.
Attached Thumbnails Click image for larger version

Name:	image.jpg
Views:	113
Size:	84.2 KB
ID:	180845  
Griff Murphey is offline  
Old 05-24-2015, 08:26 PM
  #23  
Griff Murphey
Member
Thread Starter
 
Join Date: Mar 2013
Posts: 378
Default

Comparison with the old Lindberg plastic model which has a bigger tail than I originally built. I missed the contour a bit but for a flyer it's ok, at least to me. The fin on the Lindberg as well as the rudder are much bigger than on the outerzone plans.

Lindberg kits were/are plain but known for good basic outline. This is the one I strap on to the Canadian wreath for our Royal Flying Corps remembrance service, tomorrow! Memorial Day!
Attached Thumbnails Click image for larger version

Name:	image.jpg
Views:	121
Size:	100.0 KB
ID:	180847  
Griff Murphey is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
deadbird
General Electric Discussions
5
09-23-2012 08:57 PM
Joe 1320
Electric Ducted Fan Jets
13
02-02-2012 01:15 PM
nz builder
Indoor & Micro Electric Planes
37
12-30-2011 10:30 AM
EasySky
ParkFlyers
8
11-26-2011 05:47 AM
All American
Radio Equipment For Sale & WTB
0
07-02-2010 04:47 PM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
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


Quick Reply: 1/32 scale micro JN-4D


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.

Page generated in 0.16832 seconds with 31 queries