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2019 CEF Run What YA Brung UNLIMITED speed contest Build Log by 944_Jim Babe_b10
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2019 CEF Run What YA Brung UNLIMITED speed contest Build Log by 944_Jim Empty
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2019 CEF Run What YA Brung UNLIMITED speed contest Build Log by 944_Jim

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Sad 2019 CEF Run What YA Brung UNLIMITED speed contest Build Log by 944_Jim

Post  944_Jim on Mon Apr 08, 2019 6:31 pm

Here we go!
2019 CEF Run What YA Brung UNLIMITED speed contest Build Log by 944_Jim Img_2097
2019 CEF Run What YA Brung UNLIMITED speed contest Build Log by 944_Jim Img_2096

I plan on hanging just enough rocket body tube below the "profile fuselage," and strengthening the slab wing (no ribs).

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Sad Re: 2019 CEF Run What YA Brung UNLIMITED speed contest Build Log by 944_Jim

Post  944_Jim on Mon Apr 08, 2019 9:50 pm

Ok...pretty it ain't!2019 CEF Run What YA Brung UNLIMITED speed contest Build Log by 944_Jim Img_2098

I'm experimenting with Titebond II on this one. My hope is the aliphatic glue will keep this high-power beast together for 15 laps. No where did I read a requirement to land and attempt a second flight!
I plan on cutting my .015" lines down to 42' to meet that requirement...and to minimize line weight between me and that stub of a wing!
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Sad Re: 2019 CEF Run What YA Brung UNLIMITED speed contest Build Log by 944_Jim

Post  roddie on Mon Apr 08, 2019 10:15 pm

Hi Jim! That's a RADICAL piece of model aeronautical engineering if I do say so! What the heck is the name of that model? I realize that you're scaling the design down quite a bit.. for 1/2-A..

NOTE!! I believe that the latest CEF Speed-Contest line-length requirement is 35 feet. That's a LOT EASIER to accomplish with a 1/2A speed-model, than the previous 42 feet length. Ask the question Jim... I'm planning on flying my models on 35 foot lines.
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Sad Re: 2019 CEF Run What YA Brung UNLIMITED speed contest Build Log by 944_Jim

Post  944_Jim on Mon Apr 08, 2019 11:34 pm

Ok...Cat is out of the bag. I took the Super Bat plans from eBay just for the outlines. I'm not into speed, but figured my Mosquito slabby flew well enough, so maybe this could too.
And I'll need all of 42' since I plan on JATO launch. The real stretch, and most probable reason for getting disqualified is the Medallion!
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Sad Re: 2019 CEF Run What YA Brung UNLIMITED speed contest Build Log by 944_Jim

Post  944_Jim on Mon Apr 08, 2019 11:39 pm

Oh, and I'm trying to do this on one 4"x36" piece of 1/4" balsa plus whatever scraps I have in the left-overs box. That .15 is going to be heavy! At least the rock on the string might have directional control for a few laps.
I'm planning on a balloon tank right behind the engine. Ribs as shown in the plans will be thicker, and just to keep the wing from folding up since there is no real leading edge...especially with the engine set into the wing.
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Sad Re: 2019 CEF Run What YA Brung UNLIMITED speed contest Build Log by 944_Jim

Post  fredvon4 on Tue Apr 09, 2019 12:15 pm

jim....roundy roundy...no outside loops or reverse wing over ---unless un intentional....grin

point is--- if you fold a wing in very level flight... it was weak front to rear.... not thickness or spars
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Sad Re: 2019 CEF Run What YA Brung UNLIMITED speed contest Build Log by 944_Jim

Post  944_Jim on Tue Apr 09, 2019 2:36 pm

Thanks Fred,

My concern is the grain is parallel to the "leading edge," while there will be that huge cutout for the engine. I expect the "ribs" will help keep the wing flat. I won't be skinning this with anything but paint. I plan on ONE flight for record, and test.

And I'm thinking no paint either...again, one flight for record. More pics tonight.
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Sad Re: 2019 CEF Run What YA Brung UNLIMITED speed contest Build Log by 944_Jim

Post  getback on Tue Apr 09, 2019 4:26 pm

I am in .15 medallion Very Happy Popcorn Damn!
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Post  NEW222 on Tue Apr 09, 2019 5:29 pm

That is looking good and fast just sitting there. However, I disagree with the proposed line lengths. I personally would like to see that model on 25' lines.... Shocked
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Sad Re: 2019 CEF Run What YA Brung UNLIMITED speed contest Build Log by 944_Jim

Post  944_Jim on Tue Apr 09, 2019 6:31 pm

getback wrote: I am in .15 medallion  

I was wondering how long before that was caught!
Evil Grin!

25' lines? I have to make at least 10 laps, right?
Vomit!
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Sad Re: 2019 CEF Run What YA Brung UNLIMITED speed contest Build Log by 944_Jim

Post  944_Jim on Tue Apr 09, 2019 6:38 pm

Oh, and quick CG check for the parts shown....right on the engine cylinder! I may need to move the engine forward just a smidge. Bwahahaha!
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Sad Re: 2019 CEF Run What YA Brung UNLIMITED speed contest Build Log by 944_Jim

Post  gkamysz on Tue Apr 09, 2019 8:39 pm

Oh Wow. That looks cool. I'm trying to see If I can scrape together something for the contest.
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Sad Re: 2019 CEF Run What YA Brung UNLIMITED speed contest Build Log by 944_Jim

Post  Marleysky on Wed Apr 10, 2019 1:18 pm

Hhmmmm,  looky what I found.  Someone’s building a sleeper!!  

2019 CEF Run What YA Brung UNLIMITED speed contest Build Log by 944_Jim 05173b10
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Sad Re: 2019 CEF Run What YA Brung UNLIMITED speed contest Build Log by 944_Jim

Post  roddie on Wed Apr 10, 2019 4:46 pm

Marleysky wrote:Hhmmmm,  looky what I found.  Someone’s building a sleeper!!  

2019 CEF Run What YA Brung UNLIMITED speed contest Build Log by 944_Jim 05173b10

OMG!!! Shocked Shocked Shocked Popcorn
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Sad Re: 2019 CEF Run What YA Brung UNLIMITED speed contest Build Log by 944_Jim

Post  944_Jim on Wed Apr 10, 2019 5:52 pm

Marley, if you are going to show me up with THAT, you HAVE to start your own thread! lol!
I dare you to hang on for the run.
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Sad Re: 2019 CEF Run What YA Brung UNLIMITED speed contest Build Log by 944_Jim

Post  Oldenginerod on Wed Apr 10, 2019 6:21 pm

Marleysky wrote:Hhmmmm,  looky what I found.  Someone’s building a sleeper!!  

2019 CEF Run What YA Brung UNLIMITED speed contest Build Log by 944_Jim 05173b10

Come on.  Give us a little more!! affraid
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Sad Re: 2019 CEF Run What YA Brung UNLIMITED speed contest Build Log by 944_Jim

Post  Marleysky on Wed Apr 10, 2019 9:13 pm

Oh man, 944 Jim, my apologies. I didn’t realize I was jumping in, or stepping on your build log, I’m sorry for cluttering up your Thread. I just found those pictures and had to post ‘em.

This is not my plane/rocket. It belongs to a member here, but is shown on a Collector facebook page. I sent a message inquiring if he was building it for Fun, or as a entry in the Speed Contest. Im waiting for his response.    Meanwhile this is for Rod:

2019 CEF Run What YA Brung UNLIMITED speed contest Build Log by 944_Jim A26f9c10

Sorry, I’ll try not to do it again...
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Post  944_Jim on Wed Apr 10, 2019 10:52 pm

Marley,

No harm, no foul! Or should we say fowl?

No apologies necessary! I hoped the LOL-thingy showed up clearly when I posted.

At least until you showed the rest of the SR-71...Now jealous, mad, and in a bad mood! (Big chuckles)

That is one sweet model, and I hope to see it fly. I think Orin Humphries in the Northwest flies one...I know someone related to Flying lines.org does. But I thought it was a profile model.

I'd love to know how the rocket gets ignited, and the model launched.

Thanks for sharing the details.
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Sad Re: 2019 CEF Run What YA Brung UNLIMITED speed contest Build Log by 944_Jim

Post  rsv1cox on Thu Apr 11, 2019 6:59 am

Remember Jim, when we get through with this Fly what you brung thing, we still have a Lockheed Electra build-off. Smile

Bob
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Sad Re: 2019 CEF Run What YA Brung UNLIMITED speed contest Build Log by 944_Jim

Post  944_Jim on Fri Apr 12, 2019 5:43 pm

Bob, and anyone interested in the L-10...I traced the parts to a PDF. I still need to process the lost plans.
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Sad Re: 2019 CEF Run What YA Brung UNLIMITED speed contest Build Log by 944_Jim

Post  rsv1cox on Fri Apr 12, 2019 6:10 pm

944_Jim wrote:Bob, and anyone interested in the L-10...I traced the parts to a PDF. I still need to process the lost plans.

Looks like a fun kit Jim, but I too need some incentive to build it.

2019 CEF Run What YA Brung UNLIMITED speed contest Build Log by 944_Jim Lockhe14
2019 CEF Run What YA Brung UNLIMITED speed contest Build Log by 944_Jim Lockhe15


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Sad Re: 2019 CEF Run What YA Brung UNLIMITED speed contest Build Log by 944_Jim

Post  944_Jim on Sat Apr 13, 2019 5:47 pm

Ok. Some more documentation. This is like building with legoes. I have an idea of where this is going, but no real plan. This is carve/cut to fit. Some 1/4" ply for the engine wood screws to bite into for the one flight. I'm leaning towards a rocket body tube to hold a fuel balloon above, and one on the keel below for the rocket engine.2019 CEF Run What YA Brung UNLIMITED speed contest Build Log by 944_Jim Img_2100
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Sad Re: 2019 CEF Run What YA Brung UNLIMITED speed contest Build Log by 944_Jim

Post  944_Jim on Sat Apr 13, 2019 7:36 pm

More:
2019 CEF Run What YA Brung UNLIMITED speed contest Build Log by 944_Jim Img_2101
2019 CEF Run What YA Brung UNLIMITED speed contest Build Log by 944_Jim Img_2102
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Sad Re: 2019 CEF Run What YA Brung UNLIMITED speed contest Build Log by 944_Jim

Post  getback on Sun Apr 14, 2019 8:40 am

Looks Good Jim , if it were me i would use machine screws with Loc- nuts even for one flight you don't want a loose engine to mess with the direction of the model lol! Looking forward to this flight Wink
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Sad Re: 2019 CEF Run What YA Brung UNLIMITED speed contest Build Log by 944_Jim

Post  944_Jim on Sat Apr 20, 2019 5:11 pm

Can't be a build log with out pictures:

2019 CEF Run What YA Brung UNLIMITED speed contest Build Log by 944_Jim Img_2103
2019 CEF Run What YA Brung UNLIMITED speed contest Build Log by 944_Jim Img_2104

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