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Shock Nitro 540

Old 03-08-2004, 09:08 AM
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Default Shock Nitro 540

Why should the electric guys have all the fun with foam?

I called it the Shock Nitro 540, because originally I was going to put the shocky style foam pieces on the side of the fuse, but I dropped that idea. This is the 2nd version of my foamy nitro powered plane. The [link=http://www.rcuniverse.com/forum/Foam_Hots_%2D%2D_WITH_VIDEO/m_1451991/tm.htm]HOTS[/link] was my first.

Covering mostly done. Got the MDS 68 mounted. The 13x4 inch prop looks sweet!! I have the Kirby Chambliss decals printed and ready to go on. Maybe tomorrow night I can get them on, the gear on and the radio installed.

I really think I'm going to be able to keep this in the 5.5 to 5.75 pound range, which will be fun with a .68 for power. Even if I lose control and end up at about 6lbs, it is still gonna rock. Span is 50 inches. Length is 49.5 inches.





I hope to get it out this weekend and get some video.

More details and plans:
[link=http://quicker.rchomepage.com/shock_nitro_540.html]http://quicker.rchomepage.com/shock_nitro_540.html[/link]
Old 03-08-2004, 01:03 PM
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Default RE: Shock Nitro 540

Quicker, you are the man! You are now my official foam guru! Did you do anything different on this one than you did the Hots? Is this covered in the same stuff?
Old 03-08-2004, 01:11 PM
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Default RE: Shock Nitro 540

Thanks

Covered in the same stuff. I have found the foam doesn't like the heat from an iron too well, so Monokote is out. It's just standard sign vinyl. Go to a sign shop, or better yet, a sign supply wholesaler.

I made the span 50 inches instead of 48 to handle the extra weight of the MDS .68. I also double beveled the hinge points, which gives me 90 deg. of deflection. I'll set up the controls for 60 deg. I also integrated the landing gear mount with the hardwood motor mount, so it's one piece. The HOTS had a little 2x2 block glued in for the gear. It held fine, but it was at the bottom of the fuse and caused a twisting stress crack in the foam from hard landings. This is in the center, meatier portion of the fuse. I also used tri-stock balsa at the wing/fuse joint for a bit more strength in the wing mount.

Look at my page for the pictures.
Old 03-08-2004, 02:37 PM
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Default RE: Shock Nitro 540

Awesome,

I guess I need to get off my duff and do mine. Still have the stuff I bought when you did the hots.

Great job

William
Old 03-11-2004, 12:16 AM
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Default RE: Shock Nitro 540

Slow progress. I've been working too much, and having general family interruptions. Basically I got the tank mounted, finished most of the covering (I see a few spots, though) and got the servo holes cut in the tail. I'm using Hitec 322HD's for the ailerons, a Hitec 645MG for the elevator, a Hitec 625MG for the rudder and a generic 18G mini servo for the throttle.



Old 03-11-2004, 09:18 AM
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Default RE: Shock Nitro 540

It looks great Quicker! Can't wait for a flight report on this one. Post some video if at all possible!
Old 03-12-2004, 12:38 PM
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Default RE: Shock Nitro 540

Where did you get the checkerboard vinyl? I am building a profile now and would like to build one of these next month. I have all of the foam, vinyl, and yardsticks.
Old 03-12-2004, 12:50 PM
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Default RE: Shock Nitro 540

That's not checkerboard vinyl. You have a few options here:

1: cut squares by hand and stick them on
2: use Monokote's checkered detail. It's self-adhesive, not heat activated
3: print them on your computer on regular paper, trim and stick on with 3M Super 77 spray adhesive. Then cover with clear vinyl or packing tape.

I did option #3 and covered with the thinnest packing tape I could find. I've been using this technique on my planes for a few years now. Weight is not too bad, and I can print any color/size checker I want.
Old 03-16-2004, 07:30 PM
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Default RE: Shock Nitro 540

Hey quicker i started my very own!
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Old 03-16-2004, 10:17 PM
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Default RE: Shock Nitro 540

Looks good. Just a few things:

Cut the cockpit off the fuse so you can run the hardwood strips on the top and bottom of the fuse, then glue the cockpit back on.




If you don't have the hardwood strips glued to the top and bottom of the fuse it will twist break. I used a yardstick ripped to 3/4 wide to match the foam thickness. Do NOT have any splices in the wood anywhere or that will become a weak spot and you will crack the fuse on a hard landing or dirtnap. My Hots did that.. I did end up splicing 6 extra inches to the bottom back by the tail, but that is a low stress area under the HStab. I needed a good solid place to mount the tail wheel assembly.

I have had a few people ask about dimensions, so you all must not have CAD programs, so you can't use my CAD files. Here is a link to a GIF image I made with the dimensions:


[link=http://www.quicker.rchomepage.com/plans/shock_nitro_540/540_plans.gif]http://www.quicker.rchomepage.com/plans/shock_nitro_540/540_plans.gif[/link]

Let me know if you have more problems.
Old 03-17-2004, 12:11 AM
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Default Finished and ready to go

Well, I finally got her finished and all ready to fly.




Weight: 5.5 lbs
Power: MDS 68
Prop: Zinger 13x4
Length: 49.5
Span: 50
Area: 925
Loading: 13.69 oz/sq ft

I hope to get her in the air this weekend. I'll get some video.

This will probably be the last foamy for a while. I have a Burrito kit ready to start tomorrow night and another profile ARF in the mail.
Old 03-17-2004, 08:00 AM
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Default RE: Finished and ready to go

SAWEEEET


wILLIAM
540
Old 03-17-2004, 08:48 AM
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Default RE: Shock Nitro 540

Hey the link is not working.
Old 03-17-2004, 08:53 AM
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Default RE: Shock Nitro 540

What link? The link to the GIF image with the measurements? I just checked it and it's OK.
Old 03-17-2004, 08:58 AM
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Default RE: Shock Nitro 540

This works. [link=http://www.quicker.rchomepage.com/plans/shock_nitro_540/540_plans.gif]Plans[/link]
The one you put should underscores in it. I got that one from Spadworld.
Old 03-17-2004, 08:30 PM
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Default test flew it tonight

Test flew it tonight. While the airplane is great, the .68 is WAY too big for it. The extra pound of weight is very evident and took most of the fun out of it. I plan on taking the .68 off and putting it on a different plane and putting a 46 on this plane.

One really cool thing is this one will rise in the flatspins. Once I get a lighter motor on it it's gonna be fun.
Old 03-17-2004, 09:11 PM
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Default RE: test flew it tonight

I was going to build something like this but couldn't find any blue foam at all in my neighborhood...darnest thing.

Did you reinforce the wing with arrow shafts?
Old 03-17-2004, 09:15 PM
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Default RE: Shock Nitro 540

I put wood dowels in the top and bottom of the wing. I cut a trench, then used sandpaper to round it out and poly glued the dowels in.

These planes are a lot of fun. The Hots I made ROCKS. This one will be great too, I just gotta get that big .68 off the front. Too much weight!!!!

Try pink foam. It's the same thing, just a different mfg.
Old 03-17-2004, 09:25 PM
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Default RE: Shock Nitro 540

I tried my M.D.S. .68 on a couple spads with similar results. I was thinking about making a burrito supreme about 60" ws that would work. Do you think Pauly would get upset about it. lol

William.

P.S. A Webra .50 would haul it around wthout any problem and take 11oz off.
Old 03-17-2004, 09:55 PM
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Default RE: Shock Nitro 540

He told me it would be OK to scale the Taco up for a 46. I want to call it the Taco Grande
Old 03-17-2004, 09:58 PM
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Default RE: Shock Nitro 540

Yeah cool, Taco Grande and Burrito Supreme.

Maybee I'll ask him.

William

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