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Author Topic: Jim Mosely's Ellipsis  (Read 348 times)
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Crabby
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« 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....
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OZPAF
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« 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
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applehoney
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« 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
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Don McLellan
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« Reply #3 on: November 06, 2019, 08:31:31 PM »

Beautiful work Crabby! 
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Crabby
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« 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.
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applehoney
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« 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
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Crabby
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« 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!
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applehoney
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« 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 !
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Crabby
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« 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?
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applehoney
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« 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.
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Crabby
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« 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?
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applehoney
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« 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
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