Electric Pattern Aircraft Discuss epowered pattern aircraft in this forum

New BJ Craft Andrew Jesky Designed 2016 Nats winner Element thread

Reply
Old 02-16-2017, 09:11 AM
  #1
mups53
Thread Starter
 
Join Date: Jan 2002
Location: Hoffman Estates, IL
Posts: 2,320
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default New BJ Craft Andrew Jesky Designed 2016 Nats winner Element thread

BJ Craft Element
Guys Dan Underkoffler started this thread on the RCU Pattern forum.
Mike Mueller
mups53 is offline  
Reply With Quote
Old 03-02-2017, 08:15 PM
  #2
Cliff_B
 
Join Date: Sep 2006
Location: Grand Junction, CO
Posts: 17
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

Put the first flight on my Element today, light cross wind so wasn't able to tell a lot, I set the CG on wing bolts and that seemed correct, I made it about 3 min before the canopy blew off, I was able to land without issue. Retrieved the canopy and it was caved in where it impacted the tail fin when departing. Inspection of the latch showed the canopy itself failed, the latch was still latched in the fuse and had pulled out of the canopy. It's all repairable but pretty disappointing for the first few min of flight.
I will add more air exit holes as the canopy obviously has to much pressure even with exit holes added as BJ recommends, probably will look into a different type latch. My canopy was the second one that departed today from an Element. I can't see myself fixing it and relying on same type latch that it comes with.
Cliff_B is offline  
Reply With Quote
Old 03-03-2017, 08:59 AM
  #3
AC Glenn
 
Join Date: Dec 2002
Location: memphis, TN
Posts: 230
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

Unfortunately. This happened to me on the 13th flight of my Element. My canopy landed in a lake though and was unretrievable. Bj and Mike were both very helpful in getting the situation taken care of for me and quickly. I would suggest using a canopy latch from Mike at F3A. The part number is FH5006. I mounted it in the canopy so that the pin goes into the fuse. I also make a air exit hole in the rear of the canopy to allow air to escape the canopy. Haven't had a problem since. If this isn't a option for you I would suggest reinforcing where the canopy rod inserts into the fuse. That piece that holds it in the fuse up under the canopy is flexible which if a load is put on it it will release the tension holding it in. Simple fix. Sorry that you had this issue. Once you get it back on I'm sure you will love the airplane. I have about 100 flights on mine and truly enjoy the model.
AC Glenn is offline  
Reply With Quote
Old 03-03-2017, 10:50 AM
  #4
AmericanSpectre505
 
AmericanSpectre505's Avatar
 
Join Date: Mar 2007
Location: Fayetteville, NC
Posts: 1,208
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default Canopy

You can do this as well and it help with with forced air and keeping the air out of the canopy (see photo, clear covering). I've been doing this for many years now. Definitely take AC's advice on adding the additional canopy latches.

Bill H.


Quote:
Originally Posted by Cliff_B View Post
Put the first flight on my Element today, light cross wind so wasn't able to tell a lot, I set the CG on wing bolts and that seemed correct, I made it about 3 min before the canopy blew off, I was able to land without issue. Retrieved the canopy and it was caved in where it impacted the tail fin when departing. Inspection of the latch showed the canopy itself failed, the latch was still latched in the fuse and had pulled out of the canopy. It's all repairable but pretty disappointing for the first few min of flight.
I will add more air exit holes as the canopy obviously has to much pressure even with exit holes added as BJ recommends, probably will look into a different type latch. My canopy was the second one that departed today from an Element. I can't see myself fixing it and relying on same type latch that it comes with.
Attached Thumbnails
Click image for larger version

Name:	clear mono kote 2.jpg
Views:	416
Size:	1.52 MB
ID:	2203770   Click image for larger version

Name:	clear mono kote.jpg
Views:	397
Size:	1.53 MB
ID:	2203771  
AmericanSpectre505 is offline  
Reply With Quote
Old 03-03-2017, 11:57 AM
  #5
Bubblehead575
 
Join Date: Dec 2012
Location: Castle Rock, CO
Posts: 57
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

I have been using monocoat on the bottom of my BJ canopies and have used both Seacraft and the carbon fiber rod. My Inspire has the same latch mechanism as the Element and I have had no issues (over 400 flights). But I added the extra holes for exhaust, even with my Nuance, so no problems,

I have my Element set up with the BJ latch and packing tape on the canopy. I planning on maidening it this weekend



Quote:
Originally Posted by AmericanSpectre505 View Post
You can do this as well and it help with with forced air and keeping the air out of the canopy (see photo, clear covering). I've been doing this for many years now. Definitely take AC's advice on adding the additional canopy latches.

Bill H.

Last edited by Bubblehead575; 03-03-2017 at 01:27 PM.
Bubblehead575 is offline  
Reply With Quote
Old 03-03-2017, 06:49 PM
  #6
Cliff_B
 
Join Date: Sep 2006
Location: Grand Junction, CO
Posts: 17
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

I agree with all the suggestions, I just wanted everyone to know you needed to be careful and make some adjustments if you plan to stay with the BJ latch. I obviously had too much internal air pressure causing the failure. I have chosen not to continue using the carbon rod and I have allfeady begun to install a pin type latch. I also added additional holes for exit. I will also use some form of covering on the bottom of the canopy, this will reduce the area of force and help reduce the pressure on the latch. With these fixes in place it will be good to go, I probably would fix the carbon rod system but the bottom on my canopy was damaged when the wood block departed. Switching to a pin is the easiest repair so that's how I'm going.
For the three or four min I flew it, it was nice it will be easy to make friends with it. I had 12 deg on elevator seemed bout right. I had about 13 deg on ail and that seemed quick to me but not sure, just not enough time on it. Snap ail were at 28 deg and that's fast, I will slow those down for sure. It seems to be great looking forward to getting some time on it.
Cliff_B is offline  
Reply With Quote
Old 03-04-2017, 04:23 PM
  #7
checho4
 
Join Date: May 2005
Location: antioqua, COLOMBIA
Posts: 120
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

I also used the F3A Cabin latch on my element, glued with hysol from loctite.
checho4 is offline  
Reply With Quote
Old 03-05-2017, 07:22 AM
  #8
nonstoprc
 
nonstoprc's Avatar
 
Join Date: Sep 2003
Location: Central, TX
Posts: 2,456
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

I have been using latches like latches like F3A Unlimited Deluxe ones on my planes for years. Very secure and no failure so far.

The other two anchor points on the canopy are either 1mm carbon fiber plate shaped like L or small nylon bolts.

Always glue these in place with hysol.
nonstoprc is offline  
Reply With Quote
Old 03-11-2017, 07:50 PM
  #9
rgreen24
 
rgreen24's Avatar
 
Join Date: Jan 2002
Location: Omaha, NE
Posts: 1,083
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

If you guys are using pletti motor, what rear mount are you using. Mike from F3a sells the wide mount and the narrow mount. Which one fits better
rgreen24 is offline  
Reply With Quote
Old 03-12-2017, 08:04 AM
  #10
Cliff_B
 
Join Date: Sep 2006
Location: Grand Junction, CO
Posts: 17
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

I used the AJ style mount on the front by adding 1/8 lite ply ring added on inside of nose, this works well if you use tapered type screw and counter sink a bit, use 3/16 spacers between the plywood and mount. This allows you to use a few washers to space the spinner as close as you want it . In the rear I used the F3A wide mount with too ears, it seems to work well and is an easy install.
Cliff_B is offline  
Reply With Quote
Old 03-12-2017, 10:04 AM
  #11
rgreen24
 
rgreen24's Avatar
 
Join Date: Jan 2002
Location: Omaha, NE
Posts: 1,083
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

Thanks Cliff
rgreen24 is offline  
Reply With Quote
Old 03-17-2017, 12:11 PM
  #12
MemoBill
 
Join Date: Dec 2008
Location: Alhambra, CA
Posts: 14
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

Thinking about getting the AJ Element.

How is the visibility?

How do the wings hold up in snaps with 20 to 25 degrees of aileron?

How long is the wing tube?

Thanks for any information ,

Memo
MemoBill is offline  
Reply With Quote
Old 03-17-2017, 12:45 PM
  #13
AC Glenn
 
Join Date: Dec 2002
Location: memphis, TN
Posts: 230
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

Depending on Scheme the airplane is very visible. The fuse is absolutely massively tall so very easy to see. After 130 or so flights with snaps being done every flight with 25 degrees of ailerons I would say the wings are fine. I doubt you can break this wings in a snap. No sure on how long the wing tube is but will measure tonight.
AC Glenn is offline  
Reply With Quote
Old 03-17-2017, 12:55 PM
  #14
MemoBill
 
Join Date: Dec 2008
Location: Alhambra, CA
Posts: 14
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

Thanks AC, I would like to know how long the wing tube is.
regards
Memo
MemoBill is offline  
Reply With Quote
Old 03-23-2017, 07:28 AM
  #15
Cliff_B
 
Join Date: Sep 2006
Location: Grand Junction, CO
Posts: 17
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

Quote:
Originally Posted by MemoBill View Post
Thanks AC, I would like to know how long the wing tube is.
regards
Memo
The wing tube is 23 5/8" long, I have never seen nor heard of a failure with BJ's wings. I have snapped mine numerous times and while some like the 25 degree ail snap, it's to fast and difficult to hit the stop for me, I backed off to about 20 and snaps are still quick but more predictable.

Last edited by Cliff_B; 03-23-2017 at 07:52 AM.
Cliff_B is offline  
Reply With Quote
Old 03-24-2017, 10:09 AM
  #16
MemoBill
 
Join Date: Dec 2008
Location: Alhambra, CA
Posts: 14
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

Thanks Cliff,
I have ordered the Element from Mike.
MemoBill is offline  
Reply With Quote
Old 05-09-2017, 01:48 AM
  #17
jayjayneri
 
Join Date: Aug 2004
Location: CebuCebu, PHILIPPINES
Posts: 330
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

I just added a cheap pin type latch on the canopy on my Invitation after the canopy fly off once. Haven't had a problem since.
jayjayneri is offline  
Reply With Quote
Old 05-09-2017, 08:46 AM
  #18
Bubblehead575
 
Join Date: Dec 2012
Location: Castle Rock, CO
Posts: 57
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

I now have over 2 dozen flights on my Element with a Contra V4.

I am using the standard provided BJ carbon fiber rod, without any incidents.

I have added extra 2 exhaust holes on each of the 4 strings of holes. And I have covering on the bottom of the canopy.

I am really liking the way this plane flies. I have had a couple of Agenda's and this is definitely an improvement. Presents a whole lot better.

Bill
Bubblehead575 is offline  
Reply With Quote
Old 06-12-2017, 08:21 AM
  #19
mola
 
mola's Avatar
 
Join Date: Jul 2002
Location: Henne, DENMARK
Posts: 242
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

Hi Bill, I'm assembling an Element right now with the Brenner V4 as well, and was wondering if there are any issues getting the CG in the correct location with the relatively light drive unit and three servos in the tail?

On my Invitation I have the drive batteries (Hacker 4500mAh) all the way up against the motor (NEU with 3-blade prop) more or less, to get the CG where I want it, so I was thinking about moving the rudder servo to the center of the fuselage on the Element and use pull-pull wires as we used to do, but it will obviously be more work than just putting it in the tail where the designer planned to have it... I will be using 2 pcs. 25 gram S9071SB servos for the elevators and a 66 gram BLS175 on rudder.

Thanks.
mola is offline  
Reply With Quote
Old 06-12-2017, 04:08 PM
  #20
Bubblehead575
 
Join Date: Dec 2012
Location: Castle Rock, CO
Posts: 57
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

Morten

I used BLS175 and BLS173 in the standard location. I have a Jeti Opti 95 mounted right at the back of the motor

My batteries (Zippy Compact 5800, Power Unlimited 6000, and 5100) range from 1100 to 1320g and are over the Landing Gear Block with lots of room for changing the CG, So I had no issue with balance.
Bubblehead575 is offline  
Reply With Quote
Old 06-13-2017, 02:38 AM
  #21
mola
 
mola's Avatar
 
Join Date: Jul 2002
Location: Henne, DENMARK
Posts: 242
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

Thanks Bill, much appreciated.
mola is offline  
Reply With Quote
Old 06-23-2017, 05:14 PM
  #22
tater1
 
Join Date: Mar 2006
Location: Cowichan Bay, BC, CANADA
Posts: 118
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default http://www.rcuniverse.com/forum/electric-pattern-aircraft-385/11636635-new-bj-craft-a

Just purchased this model,and all the parts,and pieces.This electric technology is sure exciting,coming from the old days of ys engines,Olympian,and zeus models.Can you recommend a site that will help me to install and set up the "Element"
tater1 is offline  
Reply With Quote
Old 06-25-2017, 06:02 PM
  #23
rgreen24
 
rgreen24's Avatar
 
Join Date: Jan 2002
Location: Omaha, NE
Posts: 1,083
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

F3aunlimited.com
rgreen24 is offline  
Reply With Quote
Old 07-10-2017, 11:54 PM
  #24
papaone
 
papaone's Avatar
 
Join Date: Mar 2005
Location: Salon, FRANCE
Posts: 1,063
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

Hello

From Bondaero
"We can get your Element in pretty much any colour you want."
Attached Thumbnails
Click image for larger version

Name:	19679048_10213720080425430_2495565407238428030_o.jpg
Views:	152
Size:	309.9 KB
ID:	2224068   Click image for larger version

Name:	19657047_1320294704756379_4118619918081883039_n.jpg
Views:	155
Size:	139.1 KB
ID:	2224069  
papaone is offline  
Reply With Quote
Old 07-12-2017, 11:54 AM
  #25
AmericanSpectre505
 
AmericanSpectre505's Avatar
 
Join Date: Mar 2007
Location: Fayetteville, NC
Posts: 1,208
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default

Looks like a Peter Collison scheme.
AmericanSpectre505 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 06:55 PM.