Logo
Builders' Plan Gallery  |  Hip Pocket Web Site  |  Contact Forum Admin  |  Contact Global Moderator
June 06, 2020, 03:41:11 AM *
Welcome, Guest. Please login or register.
Did you miss your activation email?

Login with email, password and session length
 
Home Help Search Login Register
Pages: [1]   Go Down
Print
Author Topic: Jim Mosely's Ellipsis  (Read 679 times)
0 Members and 1 Guest are viewing this topic.
Crabby
Titanium Member
*******

Kudos: 135
Offline Offline

United States United States

Posts: 2,241


Topic starter
I never met a modeler I didn't like



Ignore
« on: November 06, 2019, 10:19:20 AM »

This plane has been on my list ever since I fell in love with curvy things Roll Eyes I am undecided whether to do a diamond fuse or the conventional one. I am at the point where one adds the spars. and since they overlap on R1 I am going to be opening up the gaps to 1/8". I will be sanding in the rest as I go so the spars look nice and smooth. I am currently in a mylar covering period and find it to be very satisfying. I still have to master the tissue second covering though. Here's the wing so far. I never spent a lot of time on front end appliances so I am going to do the single blade thing Applehoney shows on the plan, along with the freewheeler. If that goes splat and I feel my mojo starting to wane, there is always the geezer to fall back on. Also the DT is going to be another thing....
Attached files Thumbnail(s):
Jim Mosely's Ellipsis
Jim Mosely's Ellipsis
Logged

The Threadkiller!
OZPAF
Palladium Member
********

Kudos: 184
Offline Offline

Australia Australia

Posts: 5,573



Ignore
« Reply #1 on: November 06, 2019, 06:39:50 PM »

Well that's the hard part done - almost Smiley It's a nice looking model and I bet flies like a dream.

John
Logged
applehoney
Titanium Member
*******

Kudos: 279
Offline Offline

Canada Canada

Posts: 3,179




Ignore
« Reply #2 on: November 06, 2019, 06:57:40 PM »

> single blade thing Applehoney shows on the plan, along with the freewheeler

Freewheeler?   You surely mean 'folder'   ?

Diamond fuselage?   The 150 version d/t'd onto a rutted area in September and broke the lower longeron extensively, folding the fuselage..  I believe a squared fuselage would have incurred much less damage and have been repairable.

Something to bear in mind.

JM
Logged
Don McLellan
Titanium Member
*******

Kudos: 66
Offline Offline

Canada Canada

Posts: 2,441




Ignore
« Reply #3 on: November 06, 2019, 08:31:31 PM »

Beautiful work Crabby! 
Logged
Crabby
Titanium Member
*******

Kudos: 135
Offline Offline

United States United States

Posts: 2,241


Topic starter
I never met a modeler I didn't like



Ignore
« Reply #4 on: November 07, 2019, 12:02:28 AM »

yeah Jim my bad! but if I fly it in P-30 I gotta go plastic...Btw I did do a reduction in size so I could fly P-30...unless there's something about it I don't know. (that's plenty) You almost have me talked out of the diamond fuse.
Logged

The Threadkiller!
applehoney
Titanium Member
*******

Kudos: 279
Offline Offline

Canada Canada

Posts: 3,179




Ignore
« Reply #5 on: November 07, 2019, 09:18:53 AM »

Ah, understood ... downsized to P30 so a freewheel prop.   Recommend the Gizmo front end.

Likely a diamond fuselage on a smaller lighter P30 version would survive a similar d/t 'landing' okay
Logged
Crabby
Titanium Member
*******

Kudos: 135
Offline Offline

United States United States

Posts: 2,241


Topic starter
I never met a modeler I didn't like



Ignore
« Reply #6 on: November 08, 2019, 10:25:41 AM »

Thanks Applehoney. I am itching to do the diamond fuse anyway. Here is a pic that shows a bad way to mark wing spars. I never trust the spar location on any plan, and I sand them is with a gizmo I made in the shop. The bottom 2 were marked by flexing a strip of 1/16 the top one was eyeballed. This is of zero relevance to an interesting build, except to make a record of a error. My eyes work better for curves. Rulers and and other mechanicals are fine for straight lines, mixing the two will give the OCD fits!
Attached files Thumbnail(s):
Re: Jim Mosely's Ellipsis
Logged

The Threadkiller!
applehoney
Titanium Member
*******

Kudos: 279
Offline Offline

Canada Canada

Posts: 3,179




Ignore
« Reply #7 on: November 08, 2019, 08:31:11 PM »

> I am itching to do the diamond fuse anyway 

Then this will either inspire or deter you !
Attached files Thumbnail(s):
Re: Jim Mosely's Ellipsis
Logged
Crabby
Titanium Member
*******

Kudos: 135
Offline Offline

United States United States

Posts: 2,241


Topic starter
I never met a modeler I didn't like



Ignore
« Reply #8 on: November 09, 2019, 12:34:28 PM »

Good am Jim. where is the timer located, and how much washout did you use? Oh and what is the line going to the trailing edge all about?
Logged

The Threadkiller!
applehoney
Titanium Member
*******

Kudos: 279
Offline Offline

Canada Canada

Posts: 3,179




Ignore
« Reply #9 on: November 09, 2019, 07:28:40 PM »

Timer?  What timer ??

If you're thinking of a tracker then that has a receptacle attached to wing mount.

No washout - wing panels are flat.

Line from TE to rear of fuselage is for the dethermaliser action.  Fuse burns through wing retaining band  ... wing comes off .. model comes down positively with wing rotating above it.  Line has small fishing swivel at one end.
Logged
Crabby
Titanium Member
*******

Kudos: 135
Offline Offline

United States United States

Posts: 2,241


Topic starter
I never met a modeler I didn't like



Ignore
« Reply #10 on: November 11, 2019, 09:47:54 AM »

Oh you use a fuse? I have to use a viscous timer. Didn't you have this thing set up for a pop up stab?
Logged

The Threadkiller!
applehoney
Titanium Member
*******

Kudos: 279
Offline Offline

Canada Canada

Posts: 3,179




Ignore
« Reply #11 on: November 11, 2019, 09:59:48 AM »

Pop-up stabiliser on larger versions, the 150 pictured.  P30's often fly away with such, hence the drop-off wing; drop-off stab works well too but I would not use either system on a model larger/heavier than  P30
Attached files Thumbnail(s):
Re: Jim Mosely's Ellipsis
Logged
Crabby
Titanium Member
*******

Kudos: 135
Offline Offline

United States United States

Posts: 2,241


Topic starter
I never met a modeler I didn't like



Ignore
« Reply #12 on: November 15, 2019, 12:47:47 AM »

Tonight I am laying up the fuse. I decided to do the diamond fuse (MK 2), but I am using the conventional plan (MK1) to lay it up over. Using a few pieces of aluminum angle stock to keep things straight. There are over 108 1/16 x 1/8 x 1.0 spacers in this fuse. I cut a few sheets of 1/16 then stripped it 1/8" it went really quick and accurate.
Attached files Thumbnail(s):
Re: Jim Mosely's Ellipsis
Logged

The Threadkiller!
OZPAF
Palladium Member
********

Kudos: 184
Offline Offline

Australia Australia

Posts: 5,573



Ignore
« Reply #13 on: November 15, 2019, 12:57:14 AM »

Those magnets work well.I noticed that the top angle is supporting your glue.

John
Logged
applehoney
Titanium Member
*******

Kudos: 279
Offline Offline

Canada Canada

Posts: 3,179




Ignore
« Reply #14 on: November 15, 2019, 09:16:37 AM »

>  over 108 1/16 x 1/8 x 1.0 spacers in this fuse.

For a  P30 fuselage  1/16 sq. would have been adequate for spacers. 3/32 sq. for longerons 
Logged
Crabby
Titanium Member
*******

Kudos: 135
Offline Offline

United States United States

Posts: 2,241


Topic starter
I never met a modeler I didn't like



Ignore
« Reply #15 on: November 15, 2019, 12:04:59 PM »

Jim that thought never crossed my mind. Roll Eyes You caught me dead asleep at the drafting table! Oh well, I'll just have to listen to some Tito Puente while I do the sanding. I am accidentally building a brick "S" house! Angry 10 grams of rubber? we'll just have to see about that. Roll Eyes

Good am John those big magnets can make a real mess of things if you do not practice some awareness of their magnetic field. I have had 4 come crashing together catching up everything but the cats tail!

BTW those little bright colored "pushpin" style magnets are pretty "D" handy.

Jim now my fuse looks like I got it from Home Depot. I think its gonna be too heavy to fly P-30. Maybe I should start over. It would be easy with all the jigging set up. I ain't doing the wing over just yet. I was pretty careful about picking out nice light sheet to strip from. I'm just gonna have to ask the scales for forgiveness.
« Last Edit: November 15, 2019, 12:15:37 PM by Crabby » Logged

The Threadkiller!
OZPAF
Palladium Member
********

Kudos: 184
Offline Offline

Australia Australia

Posts: 5,573



Ignore
« Reply #16 on: November 16, 2019, 06:54:00 PM »

I noticed in your early pic that you have little shelves/brackets supported by magnets, holding bottles of glue to one side of the board. Ingenious but sensible for your vertical board.

Having just scrapped a wing and started again, it's worth redoing something when you are really unhappy with the construction or materials.

John
Logged
flydean1
Platinum Member
******

Kudos: 24
Offline Offline

United States United States

Posts: 1,088



Ignore
« Reply #17 on: November 16, 2019, 09:01:11 PM »

Crabby,

I didn't know magnets would work "through" aluminum.  Learned something new!
Logged
Crabby
Titanium Member
*******

Kudos: 135
Offline Offline

United States United States

Posts: 2,241


Topic starter
I never met a modeler I didn't like



Ignore
« Reply #18 on: November 17, 2019, 08:23:09 PM »

Here I broke the fuse out of the aluminum support jig. Nice and straight. Also pictured is the superb balsa stripper I have been using. It once belonged to Walt Everson of MIAMA (RIP) A true gentleman if there ever was one. I have a lot of tools there is no excuse for ever boneing up a job, still I have my moments!
Attached files Thumbnail(s):
Re: Jim Mosely's Ellipsis
Re: Jim Mosely's Ellipsis
Re: Jim Mosely's Ellipsis
Logged

The Threadkiller!
flydean1
Platinum Member
******

Kudos: 24
Offline Offline

United States United States

Posts: 1,088



Ignore
« Reply #19 on: November 17, 2019, 10:12:32 PM »

Nice tool.  An original Jim Jones Balsa Stripper.  I have the honor of owning two, one wooden, one with a Delrin (tm) backing.  The inscription on both of mine from Jim says "Dean, keep your weights down and your times up."

I have a really big one.  Can't remember the name, but I think his "day job" was a maker of guitars.  You can really tell the workmanship.  Good up to 3/4 inch.

Sometime later, someone made one out of aluminum.  It was a bit pricey.

Josh Finn has one on his site which is simplicity itself.  If I didn't have a Jones for small sizes, I would snap up Josh's in a heartbeat.
Logged
Crabby
Titanium Member
*******

Kudos: 135
Offline Offline

United States United States

Posts: 2,241


Topic starter
I never met a modeler I didn't like



Ignore
« Reply #20 on: November 27, 2019, 12:30:17 AM »

Back at the Ellipsis after a short break in the action. The tail cone. Since I decided to do the diamond fuse, I am sorry I had cut the two side and bottom longerons short. I would have been easy to roll a curve into the balsa and join the three at the post. I now have to make a separate appliance as the tail cone, like it shows on the plan. Bending a short 1/8" strip of balsa across the bias is not something I wanted to try so I sanded a long strip in a length of angle brass. I then soaked it in the hot tub (104 degrees) overnite. Now taped to forms (one concave and one convex) and cook 3 hours at 230 degrees. Now the curve is set and I could glue the lengths together.

I was mystified about this till I remembered watching a guy build a fly rod for Ted Williams in the Keys once. It was octagonal in cross-section AND tapered, AND bamboo! It was a real process. Not sure but I think Williams broke it casting straight into a headwind...something he could do with the right rod. Another story!
Attached files Thumbnail(s):
Re: Jim Mosely's Ellipsis
Re: Jim Mosely's Ellipsis
Re: Jim Mosely's Ellipsis
Re: Jim Mosely's Ellipsis
Re: Jim Mosely's Ellipsis
« Last Edit: November 27, 2019, 12:41:50 AM by Crabby » Logged

The Threadkiller!
OZPAF
Palladium Member
********

Kudos: 184
Offline Offline

Australia Australia

Posts: 5,573



Ignore
« Reply #21 on: November 27, 2019, 04:30:47 AM »

That just shows there is always a solution somewhere  Smiley Very neat Crabby.

John
Logged
Pages: [1]   Go Up
Print
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.21 | SMF © 2015, Simple Machines Valid XHTML 1.0! Valid CSS!