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-   -   Eflite Jenny Put-together-thread (https://www.wattflyer.com/forums/showthread.php?t=26501)

aviatordave 11-08-2007 05:37 AM

Eflite Jenny Put-together-thread
 
I got this about a week ago and am ready to put it together. Here is the link:

http://www.horizonhobby.com/Products...ProdID=EFL1900

Here are the specs:

Specs
Wing Span: 32 in (810mm)
Overall Length: 26 in (660mm)
Wing Area: 304 sq in (19.6 sq dm)
Flying Weight: with Battery 7.5–8 oz (210–225 g); without Battery: 6.9 oz (195 g)
Motor Size: E-flite Park 250 2200 Kv
Radio: 3 channels with 2 super sub-micro servos (6-gram)Servos: S60 Super sub-microProp Size: GWS 6x5 slow flyer (GWSEP6050B)
Speed Control : E-flite 10A Pro Brushless (EFLA1010)
Recommended Battery: 480 2-cell Li-Po (THP4802SJPL)
Approx. Assembly Time: 3 hours

Here is what it looks like out of the well packaged box:

http://i158.photobucket.com/albums/t...7/IMGP0684.jpg


The detail they provide is appreciated -

http://i158.photobucket.com/albums/t...7/IMGP0685.jpg


The cowl is off and the motor mount area exposed:

http://i158.photobucket.com/albums/t...7/IMGP0688.jpg


Notice the amount of built in right thrust that is provided:

http://i158.photobucket.com/albums/t...7/IMGP0689.jpg

aviatordave 11-08-2007 05:42 AM

Yes...'Dave' luck has set in and the cowl is damaged. I can fix it so it wont be noticed, alot easier than trying to get a new one:

http://i158.photobucket.com/albums/t...7/IMGP0690.jpg


The gapless hinges are perfectly installed....I'm impressed!

http://i158.photobucket.com/albums/t...7/IMGP0691.jpg

The tail section gets assembled only one way, cant screw this up!

http://i158.photobucket.com/albums/t...7/IMGP0693.jpg

Make sure it gets glued on square -

http://i158.photobucket.com/albums/t...7/IMGP0696.jpg

Then glue square to the fuse -

http://i158.photobucket.com/albums/t...7/IMGP0697.jpg

aviatordave 11-08-2007 05:46 AM

Notice the flat profile type wing with a bit of undercamber to provide the slow flight -

http://i158.photobucket.com/albums/t...7/IMGP0698.jpg


Although the tops of the wings provide that 'ribbed' look -

http://i158.photobucket.com/albums/t...7/IMGP0699.jpg

I am even impressed with their solder work on the landing gear.

http://i158.photobucket.com/albums/t...7/IMGP0701.jpg


I put the wings on to see how it looks. I'm still waiting on the motor and servos to show up in the mail.


http://i158.photobucket.com/albums/t...7/IMGP0703.jpg

BradT 11-08-2007 07:59 AM

Good timing with this thread, Dave, as I just picked mine up a few days ago, and hope to start assembling it this weekend. I bought the motor, esc, and battery pack at the lhs, along with the kit, so I don't have to wait for anything other than the time for this little project. I've seen on other threads that installing the rigging is a good idea, and that the wheel hubs need some inserts to strengthen them. I'm looking forward to having an indoor model, as my past experiences with trying to fly "parkflyers" indoors have been less than satisfying. No real crashes doing that, but no real fun either, as constantly banking and yanking to keep off the walls gets a bit stressful.
Brad.

BTW, the wingspan is actually 33" at the LE, and 35" at the TE, so averages 34" at the middle. That's an inch or so more than my SE5a, but the wing loading should be less than half as much.

Fly Time 11-08-2007 05:51 PM

Hello Dave. Glad to see you are doing a build thread on this one. What motor did you decide on?

I can't keep this plane out of my head! I can just picture it floating around the cul du sac that I live on. We have frequent no-wind days here, and it would be nice to get some flights in without having to load up the car. I am definately going to get one soon.

aviatordave 11-09-2007 05:10 AM

Power System
 
I got my motor, servos, props, and batteries in the mail today!

I'll show you the components and give you links to where I got them.

Here is the motor, it is from Heads Up RC. A 2712-12 Outrunner

http://i158.photobucket.com/albums/t...7/IMGP0711.jpg


http://i158.photobucket.com/albums/t...7/IMGP0712.jpg

I already had this ESC....its an 18 amp, way overkill. I'll see if it fits in to save me a buck.

http://i158.photobucket.com/albums/t...7/IMGP0715.jpg


Here is a 9 gram servo I will be using. I also got this from Heads up RC

http://i158.photobucket.com/albums/t...7/IMGP0713.jpg

Also...the battery from Heads Up RC. Its a 2 cell 20C 500 mah Lipo -

http://i158.photobucket.com/albums/t...7/IMGP0720.jpg


Here is the recommended prop, a GWS EP9047 Propeller


http://i158.photobucket.com/albums/t...7/IMGP0716.jpg

and last but not least, here is the prop saver from Heads Up RC


http://i158.photobucket.com/albums/t...7/IMGP0721.jpg

Airhead 11-09-2007 05:34 AM

Looks good Dave,
you've done a great job of laying your build out for us. A lot of good detail. Keep up the great job!..:ws:

Fly Time 11-09-2007 05:40 AM

I ordered my Jenny today! :ws:

I also went to HeadsUpRC for my power setup. I decided on the 2210-21 outrunner with a 12A ESC. Not quite as much power as yours, but it should do nicely. I also got servos from them (the smaller 5g ones), and the same battery and prop saver as you. About the only thing I still need is an Rx. I will probably get a Berg 4 channel.

aviatordave 11-09-2007 05:43 AM

lol...you beat me Doug...I just sent you a pm...:)

JimClark 11-09-2007 05:45 AM

as one who is into photography also I appreciate the good clear pictures.
Here is a picture I have taken
http://JimClark.smugmug.com/photos/204376556-L.jpg

JimClark 11-09-2007 05:52 AM

So are you gonna use the same saetup on the GWS biplane also?

Jim

CHELLIE 11-09-2007 05:57 AM

Hi Dave :) that looks like a very nice plane, lots of detail to it, I still think that your having to much fun with these Rc planes :) Take care, Chellie

aviatordave 11-09-2007 03:09 PM


Originally Posted by JimClark (Post 301232)
So are you gonna use the same saetup on the GWS biplane also?

Jim

Yep, exactly the same. I bought 2 of everything from Heads Up RC.

[edit...cool pic Jim! I didnt see that before. If we have another contest I would use that if I were you!]

aviatordave 11-10-2007 10:00 PM

Installing the motor.

Well......first modification. I kind of knew this was going to be needed. The black carbon tube is made especially for the eflite 250 outrunner. That motor was a bit pricey so I got a little stronger motor from Heads up. I'll walk you thru the fit -

Here is a picture of the carbon tube and the rear of the outrunner I will be using, they are the same size. The tube is supposed to fit over the shaft.

http://i158.photobucket.com/albums/t...7/IMGP0722.jpg


Here is the new piece that I made, its just nylon stock I found at work and drilled out to fit the shaft.


http://i158.photobucket.com/albums/t...7/IMGP0723.jpg


Here is an idea of what the black tube does to hold the eflite 250 outrunner in place (if you so determine you need that motor)

http://i158.photobucket.com/albums/t...7/IMGP0725.jpg


Here is a big picture of the pieces:


http://i158.photobucket.com/albums/t...7/IMGP0726.jpg

aviatordave 11-10-2007 10:01 PM

Here I just cut everything down to size. You need to measure the length to make sure the motor shaft (prop side) extends out of the cowl


http://i158.photobucket.com/albums/t...7/IMGP0729.jpg


Here is a side view:


http://i158.photobucket.com/albums/t...7/IMGP0731.jpg


And another view looking from the bottom:


http://i158.photobucket.com/albums/t...7/IMGP0732.jpg


More to come later...I have to go to a wedding tonight http://www.usapatriotsamerica.com/fo...lies/smile.gif

Fly Time 11-11-2007 01:11 AM

Hey Dave, do you think the heat disipating from the motor will be a problem for that plastic tube you made? I really have no idea how hot they get.

Glad you are blazing the way, because I am going to have the exact same problem when I am putting mine together next weekend!

aviatordave 11-11-2007 03:52 AM


Originally Posted by D Payne (Post 301226)
I ordered my Jenny today! :ws:

I also went to HeadsUpRC for my power setup. I decided on the 2210-21 outrunner with a 12A ESC. Not quite as much power as yours, but it should do nicely. I also got servos from them (the smaller 5g ones), and the same battery and prop saver as you. About the only thing I still need is an Rx. I will probably get a Berg 4 channel.

I noticed the back end of this motor is a little different, the carbon tube might work or you might be able to use the base mount and secure it to the motor box.

http://i158.photobucket.com/albums/t...967/95dd_1.jpg

------------------------------------------------------------------
With my motor I dont think the heat will be too much of a factor. From the specs it draws 8-9 amps max and there seems to be alot of metal to help share the heat. I have a similiar motor on a 3D foamie and it barely gets warm after 10-15 min of flight. In the manual it says you do most cruising around @ 1/2 throttle....I dunno, we'll see :)

Airhead 11-11-2007 04:54 AM

Hi Dave,
I've been following your build.. Nice job. Real good close-up photos too. Really helps go along with your explanations.. Thanks.:)

JimClark 11-11-2007 06:00 AM

Thanks Dave
Humm contest I didn't know there were this kind of contest. I thought they were ariel photography. Im up for it.

JIm


Originally Posted by aviatordave (Post 301306)
Yep, exactly the same. I bought 2 of everything from Heads Up RC.

[edit...cool pic Jim! I didnt see that before. If we have another contest I would use that if I were you!]


aviatordave 11-11-2007 06:25 AM


Originally Posted by Airhead (Post 302135)
Hi Dave,
I've been following your build.. Nice job. Real good close-up photos too. Really helps go along with your explanations.. Thanks.:)

Glad you like. Are these big pics too much on the PC? I wasnt sure if I should do it this way or use the thumbnails. I like the close up pics also, I just turned 40 this year and needed glasses. The macro shots help us older guy to put things into perspective :)


Originally Posted by JimClark (Post 302156)
Thanks Dave
Humm contest I didn't know there were this kind of contest. I thought they were ariel photography. Im up for it.

JIm

They had a calendar contest a little while ago for 2008. Once in awhile they have other contests, so keep that in mind, it doesnt need to be aerial photo shots at all.

Grasshopper 11-11-2007 06:28 AM

The Jenny is looking good Dave. Glad to see I'm not the only one up late building.

aviatordave 11-11-2007 06:32 AM


Originally Posted by Grasshopper (Post 302170)
The Jenny is looking good Dave. Glad to see I'm not the only one up late building.

yep...lol

aint we some wild and crazy guys? Sitting up Saturday night working on RC planes. And some people lead boring lives.....:)

CHELLIE 11-11-2007 06:35 AM


Originally Posted by D Payne (Post 301987)
Hey Dave, do you think the heat disipating from the motor will be a problem for that plastic tube you made? I really have no idea how hot they get.

Glad you are blazing the way, because I am going to have the exact same problem when I am putting mine together next weekend!


Hi :ws: That was my thought too, as the motor might spin in the nylon motor mount, and damage the wires, hope not, the build is looking great, take care, Chellie

aviatordave 11-11-2007 06:41 AM


Originally Posted by CHELLIE (Post 302172)
Hi :ws: That was my thought too, as the motor might spin in the nylon motor mount, and damage the wires, hope not, the build is looking great, take care, Chellie

That is the same basic system that eflite uses for the recommended 250 outrunner. They said to use RTV to secure the shaft to the tube. It feels very strong & a tight fit. The plane only weighs 8 oz and the motor pushes 12 oz of thrust (a bit overpowered, no biggie :))

So....all in all its really a small plane with a small motor. RTV can withstand temps that internal combustion engines produce & make a strong bond, so I assume it should hold.

(right?) :tc:

CHELLIE 11-11-2007 06:55 AM


Originally Posted by aviatordave (Post 302174)
That is the same basic system that eflite uses for the recommended 250 outrunner. They said to use RTV to secure the shaft to the tube. It feels very strong & a tight fit. The plane only weighs 8 oz and the motor pushes 12 oz of thrust (a bit overpowered, no biggie :))

So....all in all its really a small plane with a small motor. RTV can withstand temps that internal combustion engines produce & make a strong bond, so I assume it should hold.

(right?) :tc:

Ok :ws: I Learn something new every day, Take care, Chellie

Airhead 11-11-2007 07:11 AM


Originally Posted by aviatordave (Post 302167)
Glad you like. Are these big pics too much on the PC? I wasnt sure if I should do it this way or use the thumbnails. I like the close up pics also, I just turned 40 this year and needed glasses. The macro shots help us older guy to put things into perspective :)



They had a calendar contest a little while ago for 2008. Once in awhile they have other contests, so keep that in mind, it doesnt need to be aerial photo shots at all.

Hi Dave,
No, I don't think they are too big. most folks will like the larger photos, I think. I have had some problem getting this thread to load. But last night my computer did something strange while it and I were asleep. this morning I had to shut it down and restart it. Had a unusual screen showing that some bad stuff had happened. It seems ok now, just loads this thread weird...
I'm a little over 40 myself and I like Readers Digest Large Print Threads........haha

Biplane Murphy 11-11-2007 08:16 AM

1 Attachment(s)
If you were worried at all.....a really small hose clamp could ensure no slipping.

Attachment 46625

ducatirdr 11-12-2007 02:50 PM

Fragile stock wheels replacement
 
After a minor doink I broke one of my stock wheels. I tried to repair them but ended up having a wobbling wheel.

I found some Guillow's 2 inch wheels at a LHS for $1.99 (4 wheels in a pack). They require gluing the wheels together and a little touch of Dremel drill to enlarge the hole.

They look like WWI stock wheels can't tell them from the Jenny stock wheels although they are all black.

They are a bit heavier than stock but more robust and worth the $1.99

Guillow's Parts & Accessories Lightweight 2 inch Wheels (4 in pack)
Guillow's product# 116

Fly Time 11-14-2007 11:38 PM

Hey Dave, how's your Jenny coming together? I'm curious to see what if anything you will do to beef up the landing gear. Sounds like a potential weak point.

I got a call from my wife today telling me that a very large box had appeared on our front porch. Usually those boxes are addressed to her and are full of shoes, but not this one :D

The motor and servos, etc. arrived yesterday and the Rx is another day or two out but on the way. I will need to get some bullet connectors from the LHS as I forgot to get those with the motor, and may also look for a larger carbon fiber tube. My motor is also going to be too big to fit on the stock tube, though I will probably just end up using the included firewall mount if I can.

Can't wait to get home and have my first look at it all!

BUCKSHOT 11-15-2007 12:52 AM

So Do Ya Think I Could Use A Vampower 850mah 3s In This Plane,i Got A Couple Lying Around.......hate To See Them Go To Waste

Fly Time 11-15-2007 01:02 AM


Originally Posted by BUCKSHOT (Post 304150)
So Do Ya Think I Could Use A Vampower 850mah 3s In This Plane,i Got A Couple Lying Around.......hate To See Them Go To Waste

Hey I think you're supposed to buy the battery to match the plane, not the other way around!

But seriously, 11.1v would sure juice up the prop speed. It's designed for 7.4. The stock motor might not like it, but you could pick up something that could for cheaper. Maybe someone who has actually tried it will weigh in...

BUCKSHOT 11-15-2007 01:08 AM

Yeah They Were The Super Cub Battery's......rip

aviatordave 11-15-2007 04:44 AM


Originally Posted by D Payne (Post 304126)
Hey Dave, how's your Jenny coming together? I'm curious to see what if anything you will do to beef up the landing gear. Sounds like a potential weak point.

I got a call from my wife today telling me that a very large box had appeared on our front porch. Usually those boxes are addressed to her and are full of shoes, but not this one :D

The motor and servos, etc. arrived yesterday and the Rx is another day or two out but on the way. I will need to get some bullet connectors from the LHS as I forgot to get those with the motor, and may also look for a larger carbon fiber tube. My motor is also going to be too big to fit on the stock tube, though I will probably just end up using the included firewall mount if I can.

Can't wait to get home and have my first look at it all!

I'm dragging my feet :)

I decided to use a different radio system so I want to install a AR6100 reciever to use with my DX7. So.....I am waiting for it to show up in my mailbox.

One thing I discovered is that once you attach the wings and the wing rigging, you cannot take the wing off unless you want to completely destroy the wing rigging. Therefore the reciever needs to be set up 100% before the wings are attached. Bummer as I do not have my reciever yet.

I did a little bit in the meantime and I will post the pics below.

D. Payne - if you put yours together, feel free to post pics and ideas here. The more insight the better!

oh ya.....I have to compliment horizon hobby on shipping that big box...it only cost me $5 shipping! I've ordered ESC's that were shipped in envelopes that cost me twice that!

aviatordave 11-15-2007 04:50 AM

Control Horns
 
Its pretty simple, they have the slot cut out for you already and the fit is perfect-

http://i158.photobucket.com/albums/t...7/IMGP0738.jpg



Just add some foam safe glue on the backs and it aint comming off. Some people have made a modification here and added a thin piece of plywood for extra strength. I havent done that (yet)


http://i158.photobucket.com/albums/t...7/IMGP0739.jpg

aviatordave 11-15-2007 04:58 AM

Servo Installation
 
I used 9 gram servos here. The manual calls out for 6 gram servos. So basically I am using slightly larger servos and need to make a modification to the servo bay. - no biggie :)

http://i158.photobucket.com/albums/t...7/IMGP0733.jpg



Next I had to drill out the control arms to fit the supplied EZ connector.


http://i158.photobucket.com/albums/t...7/IMGP0747.jpg


Then I attached the control rods to the servo.


http://i158.photobucket.com/albums/t...7/IMGP0748.jpg


Here is what it looks like from the other side. The servos actually sit upside down in the fuse as this pic is taken with the plane sitting upright. The cowl fits over this so it cannot be seen.



http://i158.photobucket.com/albums/t...7/IMGP0751.jpg


And here is where my new reciever will go .......


http://i158.photobucket.com/albums/t...7/IMGP0749.jpg

aviatordave 11-15-2007 05:03 AM

Wheels
 
Well....these are different, thats for sure. The inner wheel (looks like a lite wheel that GWS would use) is actually made of lite ply. The outer 'hubcap' is plastic. The holes were to small so I had to drill them out so the axle would fit.

http://i158.photobucket.com/albums/t...7/IMGP0754.jpg


Plan on drilling or expanding the hole on the retaining ring, it wont fit unless you make it fit.

So what do you have to do to make this thing beefier?

http://i158.photobucket.com/albums/t...7/IMGP0758.jpg

Yes..........that dent in the hubcap is supposed to be there!

aviatordave 11-15-2007 05:06 AM

Until I get my reciever I cant do much more...except work on my TigerMoth which I will prob do a build thread on just for the fun of it :)

Here is the mess on my workbench -

(The bottle of beer is optional :))


http://i158.photobucket.com/albums/t...7/IMGP0752.jpg

FlyingMonkey 11-15-2007 05:32 AM

I don't see any hotglue....

aviatordave 11-15-2007 05:45 AM

welll....there is Gorilla Glue off on the left. I havent had a need for the glue gun yet. Maybe after I fly......I actually do bring it with me

aviatordave 11-15-2007 06:17 AM


Originally Posted by BUCKSHOT (Post 304150)
So Do Ya Think I Could Use A Vampower 850mah 3s In This Plane,i Got A Couple Lying Around.......hate To See Them Go To Waste

You can modify that battery into a 2 cell. So instead of having two 3 cell 850 mah batteries, you could have three 2 cells with a little safe modification if your capable.

I dont see a 3 cell fitting very easily, I have a 2 cell 800mah that will just fit.


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