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Yet Another Demon Build Jett60LX

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Old 04-25-2011, 09:10 AM
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smoknrv4
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Default Yet Another Demon Build Jett60LX

I know, I know, another Demon build[:'(], but whatever.
I'm on afternoon shift this week and I hate it, so....why not work on building a Demon before work in the mornings to keep my mind off this shift.
I hoping this build is quick.....we'll see.
I'm putting my Jett 60LX FISE engine in this one but ARGHHH... an 8oz short Jett tank just doesn't quite fit, and a 6oz is just a little small for my liking, so I moved the firewall ahead about 1/4", shouldn't hurt it much.
Hs 225BB for elevons and a HS 81 for throttle.
Here's the progress today.

BTW I forgot how nice these kits were, still impressed with them!
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Old 04-25-2011, 10:12 AM
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Default RE: Yet Another Demon Build Jett60LX

Finished up the day with the trailing edge and leading edge 1/4 stock.
Ready for more tomorrow.
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Old 04-25-2011, 11:56 AM
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Default RE: Yet Another Demon Build Jett60LX

Is that all you got done in one day?

175-180 coming up!

I think we're nearly ready weather-wise to test the .65 Demon too.. get yours done by next week and we'll have a Demon session.

MJD

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Old 04-25-2011, 12:51 PM
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Default RE: Yet Another Demon Build Jett60LX


ORIGINAL: MJD


get yours done by next week and we'll have a Demon session.

MJD

Thats the plan anyways.
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Old 04-25-2011, 11:31 PM
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Default RE: Yet Another Demon Build Jett60LX

Shift work should be outlawed...!

You got a nice start on it. Thinking about the build at work will help the hours go by.
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Old 04-26-2011, 12:48 AM
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Default RE: Yet Another Demon Build Jett60LX

Nice jig.
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Old 04-26-2011, 05:01 AM
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Default RE: Yet Another Demon Build Jett60LX


ORIGINAL: combatpigg

Shift work should be outlawed...!

You got a nice start on it. Thinking about the build at work will help the hours go by.

Yes.. it does help the time go by for sure.
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Old 04-26-2011, 07:09 AM
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Default RE: Yet Another Demon Build Jett60LX

looking at the design of that could you have moved the carbon spar back about an inch one the lighting holes were filled in with lite-ply? what if you removed the foward carbon spar and fully sheeted the wing?
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Old 04-26-2011, 09:11 AM
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Default RE: Yet Another Demon Build Jett60LX


ORIGINAL: airraptor

looking at the design of that could you have moved the carbon spar back about an inch one the lighting holes were filled in with lite-ply? what if you removed the foward carbon spar and fully sheeted the wing?

Yeah that could have been done too, but I went for the easier, less work route.
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Old 04-26-2011, 09:29 AM
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Default RE: Yet Another Demon Build Jett60LX

A slightly more costly way to get more fuel into a Demon that I have pondered is a pair of Jett CG tanks side by side. They almost fit in the airfoil thickness, a few seconds with a heat gun and they would, and probably give a total of 9.5-10oz fuel. It would require some mods but not too radical. Bit of a PITA I guess.
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Old 04-26-2011, 09:57 AM
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Default RE: Yet Another Demon Build Jett60LX

The progress today.
I HATE LEADING EDGE SHEETING!
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Old 04-26-2011, 09:59 AM
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Default RE: Yet Another Demon Build Jett60LX


ORIGINAL: MJD

A slightly more costly way to get more fuel into a Demon that I have pondered is a pair of Jett CG tanks side by side. They almost fit in the airfoil thickness, a few seconds with a heat gun and they would, and probably give a total of 9.5-10oz fuel. It would require some mods but not too radical. Bit of a PITA I guess.

That would be good for the big block demons for sure.
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Old 04-26-2011, 11:19 AM
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Default RE: Yet Another Demon Build Jett60LX

Smokey, what flight time do you anticipate with an 8oz tank? 10oz better? 5 mins full bore would be nice, none of that annoying electric burst style flying i hope..
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Old 04-26-2011, 02:00 PM
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Default RE: Yet Another Demon Build Jett60LX

I was getting about 5min with the Jett60LX in my F-20 with an 8oz, so should get at least that, with a less draggy airframe like the Demon.
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Old 04-26-2011, 03:10 PM
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Default RE: Yet Another Demon Build Jett60LX

Ahh great, enough time to get some fun.
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Old 04-26-2011, 03:18 PM
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Default RE: Yet Another Demon Build Jett60LX


ORIGINAL: smoknrv4

The progress today.
I HATE LEADING EDGE SHEETING!
Me too! I've built 5 or 6 now and I still hate it. At least once the sheeting is done the rest becomes less painful. I don't mind center section sheeting or fuselage sheeting (when there is a fuselage), I find that job somewhat satisfying. Plus it's a lot easier slapping on oversize rough cut pieces then trimming/sanding to shape. Not so with the LE unfortunately..

Did I mention how much I like adding vertical webs between the back edges of the sheeting? 3/32" or even 1/16" is fine. I just measure the distance between ribs at the rear edge of the sheeting, measure the depth at each point, then cut a trapezoid to fit. If they recess a bit so what. Slip them in place and hit them with thin CA. Stiffens the airframe and removes that ugly sag between ribs (wife jokes aside).

I forget, are you 72mHz or 2.4gHz? If 72 don't forget the antenna tube. I only say that because of multiple SNAFU's of my own..

So.. what happened with the F-20, are you just pulling the engine or has there been an "incident"..?

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Old 04-26-2011, 04:02 PM
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Default RE: Yet Another Demon Build Jett60LX

No incident with the F-20, just on the shelf for now.
I do like the web idea between the sheeting, maybe I'll do that, shouldn't add much weight to worry about.
And yes antenna tubing for sure, I thought about you when I was thinking about where to route it today.
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Old 04-26-2011, 04:06 PM
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Default RE: Yet Another Demon Build Jett60LX

Did I mention I"m getting excited!
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Old 04-26-2011, 05:17 PM
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Default RE: Yet Another Demon Build Jett60LX

where can i get a kit????
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Old 04-26-2011, 05:59 PM
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Default RE: Yet Another Demon Build Jett60LX

http://www.mikesrc.us/
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Old 04-26-2011, 08:24 PM
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Default RE: Yet Another Demon Build Jett60LX


ORIGINAL: smoknrv4

The progress today.
I HATE LEADING EDGE SHEETING!

Here is a trick I have learned from building SIG WONDERS>

I replace the 1/4 x 1/4 balsa L.E. stock with 3/16 x 3/16 Spruce or Basswood.
Also I may need to use wider L.E. sheeting but still 1/16 thick.

In place of the butt joint the may get wavy ~ between the ribs....

I overlay the sheeting on top the 3/16 sq. L.E.
Top side first then trim the sheeting flush to bottom, then the bottom side trim and sand as needed.

Bob

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Old 04-27-2011, 08:01 AM
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Default RE: Yet Another Demon Build Jett60LX

Not much time today, but managed to do some wing tip shaping, cough, cough[:'(] sneeze. Must remember to wear a dust mask.[sm=rolleyes.gif]

So far I got about 9 hrs into the build.
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Old 04-27-2011, 10:48 AM
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Default RE: Yet Another Demon Build Jett60LX

9 hours? Should almost be ready for covering then!

Crazy4 - yup, that is an option that has been suggested, and next one I build I plan to try that.

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Old 04-27-2011, 01:28 PM
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Default RE: Yet Another Demon Build Jett60LX


ORIGINAL: MJD

9 hours? Should almost be ready for covering then!



Ready for covering? Doubt it, I'm too slow of a builder and just too fusy just to slap something together. But I'm hoping this will be one of my fastest builds.
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Old 04-27-2011, 03:40 PM
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Default RE: Yet Another Demon Build Jett60LX

They frame up pretty fast, IIRC about 5 hours for me with a building jig, but of course that does not include glassing the tips, bla bla bla.. the devil is in the details.
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