Learn, Build, Fly, Share
Welcome,
Guest
. Please
login
or
register
.
Did you miss your
activation email
?
1 Hour
1 Day
1 Week
1 Month
Forever
Login with username, password and session length
Home
Member Map
Forum
Help
Search
Calendar
Contact
Login
Register
Eagler's Nest
»
Airframes
»
Single Seaters
»
XL
»
Jim's XL build D-25
How to
post
, how to
add pics
, how to add
an attachment
, and how to share
a YouTube video
...
« previous
next »
Print
Pages:
1
...
3
4
[
5
]
6
7
...
10
Go Down
Author
Topic: Jim's XL build D-25 (Read 70756 times)
grdev
Sr. Member
Posts: 230
Total likes: 6
Noob
Re: Jim's XL build D-15
«
Reply #60 on:
February 18, 2014, 07:51:35 PM »
Yes, all of Leonard's drawings are center to center The forward wing mount would be 24" from the center top tube of station one
Logged
Jlwright
2015 Donor
Posts: 192
Total likes: 9
Building XL-D-25
Eagle Type: XL-D-25
Re: Jim's XL build D-15
«
Reply #61 on:
February 18, 2014, 08:01:17 PM »
I'm going to tack weld the forward cabanes at the 24 inch dimension and hope for the best. I'll deal with the rear situation when the time comes. If the rear mount doesn't hit directly on top of the rear cabanes I'll just figure a way to brace it with gussets or whatever it takes.
Logged
It's a brutal struggle for the biscuit!
Building XL-D-25 Fuselage 90% done. ribs done, spars 90% done.
Sam Buchanan
Beta testers
Posts: 365
Total likes: 13
Re: Jim's XL build D-15
«
Reply #62 on:
February 18, 2014, 08:26:16 PM »
Quote from: Jlwright on February 18, 2014, 07:40:47 PM
I am assuming then the 29 inch dimension is center to center of the cabanes.
Jim, I don't recall the exact mental process I used for these dimensions, but you take the 27.5" dimension on the rib plans, add the spars, figure out where the fittings will be, and make sure you have enough room on the top longeron to make everything work.
Simple.
I kinda designed my own gussets for the fittings using the TLAR method (That Looks About Right). There is a piece of sheet stock that is welded to the cabanes, ties into the fittings and wraps over the "tee" of the attachment. Looked strong enough to me.
Every Eagle is unique!
Logged
Jlwright
2015 Donor
Posts: 192
Total likes: 9
Building XL-D-25
Eagle Type: XL-D-25
Re: Jim's XL build D-15
«
Reply #63 on:
February 19, 2014, 05:24:54 AM »
After sleeping on this I can make this work but the rear mount make take a little engineering to make a good solid attachment to the cabanes.
Logged
It's a brutal struggle for the biscuit!
Building XL-D-25 Fuselage 90% done. ribs done, spars 90% done.
grdev
Sr. Member
Posts: 230
Total likes: 6
Noob
Re: Jim's XL build D-15
«
Reply #64 on:
February 19, 2014, 05:42:42 AM »
I'm curious , what is your solution? I was going to work on mine today, but I'll wait until you do yours.
Logged
Jlwright
2015 Donor
Posts: 192
Total likes: 9
Building XL-D-25
Eagle Type: XL-D-25
Re: Jim's XL build D-15
«
Reply #65 on:
February 19, 2014, 06:14:41 AM »
maybe you need to come down and look at this with me to make sure i am not screwing this up.:-[
Logged
It's a brutal struggle for the biscuit!
Building XL-D-25 Fuselage 90% done. ribs done, spars 90% done.
grdev
Sr. Member
Posts: 230
Total likes: 6
Noob
Re: Jim's XL build D-25
«
Reply #66 on:
February 19, 2014, 06:57:25 AM »
maybe Tom H will check in here, he has been a great source of information on the cg for my DE.
We hope to come down next weekend , will check in with you early next week. I have some ideas for the Ultra Vair/XL engine mount.
Logged
grdev
Sr. Member
Posts: 230
Total likes: 6
Noob
Re: Jim's XL build D-25
«
Reply #67 on:
February 19, 2014, 07:14:29 AM »
Jim, just thinking out loud, what if you were to take a short piece of 3/4 or 5/8", say maybe 4" long and split it in half. You could weld the stock mount onto that and slide it back and forth until you have the right location. You could make it long enough to cover your bend in the longeron to strengthen your bend. Should only add a few oz to your build, and be a low profile fix.
Logged
grdev
Sr. Member
Posts: 230
Total likes: 6
Noob
Re: Jim's XL build D-25
«
Reply #68 on:
February 19, 2014, 07:21:09 AM »
After thought, if you did that for the front mount as well you would be able to adjust your cg when you do your wt/balance and when your happy with the location then weld your mounts. May it is a bad idea, but sounds like it would work to me. Maybe give you some leeway on where you place your fuel tank.
Logged
Jlwright
2015 Donor
Posts: 192
Total likes: 9
Building XL-D-25
Eagle Type: XL-D-25
Re: Jim's XL build D-25
«
Reply #69 on:
February 19, 2014, 04:57:42 PM »
I finished the front cabanes today and only ended up 3/8 forward than the plans show. I think with the fuel tank forward it will work out to my advantage. Tomorrow I think I will jig up station 1. I just noticed my plans number is D-25 and not 15.
Logged
It's a brutal struggle for the biscuit!
Building XL-D-25 Fuselage 90% done. ribs done, spars 90% done.
Tom H
Beta testers
Posts: 394
Total likes: 86
Built/flew LEU, built/flying DE
Eagle Type: DE, LEU
Re: Jim's XL build D-25
«
Reply #70 on:
February 20, 2014, 05:11:20 AM »
Gil, per your suggestion I'm checking in, but have to say first that I don't have much knowledge and no experience with the XL model. Regarding CG, you want to get the flying CG in the right range on any aircraft. There has been a lot of discussion of LEU and DE flying CGs on the old Yahoo list, and essentially have concluded that on those aircraft, a flying CG in the 25 - 30% aft of wing leading edge is a good area. I don't know if this applies to the LEXL. Maybe someone with flying experience in the LEXL could chime in.
Logged
Tom H
Stubby, a BDE
Treehugger, LEU
grdev
Sr. Member
Posts: 230
Total likes: 6
Noob
Re: Jim's XL build D-25
«
Reply #71 on:
February 20, 2014, 06:39:10 AM »
Thanks for checking in Tom, your work on the DE was most welcomed . Just off hand do you know the weight of your engine on your le, and are your actual measurements the same as the drawings? I'm using a 1/3 Corvair and I need to figure out just how wide I need to build my engine mount. The engine should weigh 85 pounds. I don't have an actual weight yet for the engine and prop, but I'm hoping it is close to the 1/2 VW
Thanks Gil
Logged
Jlwright
2015 Donor
Posts: 192
Total likes: 9
Building XL-D-25
Eagle Type: XL-D-25
Re: Jim's XL build D-25
«
Reply #72 on:
February 20, 2014, 04:03:46 PM »
I got a little more done today. I tacked in the firewall and tomorrow I'll add the diagonals and the seat frame.
Logged
It's a brutal struggle for the biscuit!
Building XL-D-25 Fuselage 90% done. ribs done, spars 90% done.
Tom H
Beta testers
Posts: 394
Total likes: 86
Built/flew LEU, built/flying DE
Eagle Type: DE, LEU
Re: Jim's XL build D-25
«
Reply #73 on:
February 21, 2014, 05:47:51 AM »
Gil, our LEU engine, half VW, 69 x 90.5, w/ prop, oil, distributor, ready to mount on the airplane, weighed 92.5 lbs.
Our LEU airframe was built per plan's dimensions.
We had to push the engine more forward than we had planned to get the CG at 25% aft of wing leading edge. It flew and landed great; just did not have enough hp for climb.
Logged
Tom H
Stubby, a BDE
Treehugger, LEU
Jlwright
2015 Donor
Posts: 192
Total likes: 9
Building XL-D-25
Eagle Type: XL-D-25
Re: Jim's XL build D-25
«
Reply #74 on:
February 21, 2014, 04:16:36 PM »
I have to admit I'm getting pretty tired of grinding and fitting weld joints. I can see the light at the end of the tunnel though.
Logged
It's a brutal struggle for the biscuit!
Building XL-D-25 Fuselage 90% done. ribs done, spars 90% done.
Print
Pages:
1
...
3
4
[
5
]
6
7
...
10
Go Up
« previous
next »
Eagler's Nest
»
Airframes
»
Single Seaters
»
XL
»
Jim's XL build D-25
EaglersNest Mission Statement:
To maintain the comprehensive searchable database resource for Builders and Fliers of Leonard Milholland ultralight airplane designs aka Legal Eagle Ultralights.
BetterHalfVW.com becomes
LegalEagleAirplane.com
- stay in contact with Leonard and get plans for all the Milholland Designs at
LegalEagleAirplane.com
SimplePortal 2.3.7 © 2008-2024, SimplePortal