Re: Brodak Mustang Build

JPvelo Sat Dec 05, 2015 3:04 am

Rusty,

Yes it has some sort of particulate in it.

Once I put polyspan on the wings my son said the red stuff looked like bacon! He was right.

**RknRusty** Sat Dec 05, 2015 5:24 am

I like CF control rods, they give that bit of extra precision to your control input. And it looks professional too. I even use a tiny CF tube on my Li'l Satan. Cute. Which reminds me, I have a 1/2A Mustang and another Li'l Satan still in the box.
Rusty

getback Sat Dec 05, 2015 2:48 pm

Hey Jim that's the same stuff I have used for years , are you cutting it or put it on straight , as a kid I put it on straight man that's some thick stuff I've been cutting since on CEF . Rusty they still make colors just not that many ... http://midwestproducts.com/collections/paint //// I like Midwest Wood but that's high even if there are more than one piece per bundle . I go to this one swap meet in Jan. and there is one guy there has Aero colors ole stock but still good , price is right too !! no clear though Sad

getback

JPvelo Sat Dec 05, 2015 7:12 pm

Eric,

I'm using it full strength, what do you cut it with?

Ken Cook Sat Dec 05, 2015 7:18 pm

Dupont 3608S thinner

Mark Boesen Sat Dec 05, 2015 8:17 pm

I thought 3806S was taken off the market 15 years ago? Lol, i remember everybody freaking out and stockpiling the stuff?

JPvelo Sun Dec 06, 2015 2:05 am

White fillets on pink tissue packs the aesthetic punch of 1970s feminine hygiene product packaging. Should spray primer Monday.

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Ken Cook Sun Dec 06, 2015 2:15 am

Nope, you can still buy it here and the last gallon I purchased was under a new label by Chroma Color. The numbers are still the same 3608S.

Mark Boesen Sun Dec 06, 2015 7:10 am

hmmm...from everything i'd read, seen or heard, it was a foregone conclusion that DuPont was taking it off the market? I guess that goes to show you don't believe everything you read, hear or see.

getback Sun Dec 06, 2015 3:42 pm

JPvelo wrote:Eric,

I'm using it full strength, what do you cut it with?

Jim I use Aero Gloss Thinner about 1/2 and 1/2 ,, I tried to get that DuPont stuff and no one at the paint stores know of it . Eric

JPvelo Mon Dec 07, 2015 10:26 pm

Shootin' primer.
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JPvelo Mon Dec 07, 2015 11:07 pm

Base coat on, no more photos until decals are on.
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ARUP Fri Dec 11, 2015 4:14 am

Ya doin' Bob Hoover's bird from days gone by... Rockwell International scheme?

JPvelo Sat Dec 12, 2015 10:27 pm

ARUP wrote:Ya doin' Bob Hoover's bird from days gone by... Rockwell International scheme?

Not tellin', it's top secret until finished.

roddie Sat Dec 12, 2015 11:31 pm

Wicked Jim! Nice to have paintin' weather. That can put a damper on finishing a build. Looking forward to seeing it all decked-out!

**Cribbs74** Sun Dec 13, 2015 1:26 am

Looks good Jim,

Are you expecting a trim problem?

JPvelo Sun Dec 13, 2015 2:15 am

Cribbs74 wrote:Looks good Jim,

Are you expecting a trim problem?

No, I just wanted to experiment on this one. If I build a full fuselage stunter I'll know what I'm doing, hopefully.

Jim

Ken Cook Sun Dec 13, 2015 3:33 pm

Jim, that's a Brodak kit? Is John Miller the CAD designer? I'm very curious as to why the small sheeted leading edge and not a full D tube back to the spar. Did the kit offer the fairings from the leading edge to the fuse? Ken

JPvelo Sun Dec 13, 2015 4:30 pm

Ken Cook wrote: Jim, that's a Brodak kit? Is John Miller the CAD designer? I'm very curious as to why the small sheeted leading edge and not a full D tube back to the spar. Did the kit offer the fairings from the leading edge to the fuse? Ken

Yes, it's a Brodak. The kit has two little triangle fairings for the leading edge. They install over the landing gear. I was going to leave them off.
Jim

JPvelo Tue Dec 22, 2015 9:00 pm

roddie wrote:
RknRusty wrote:
I think the adjustable trim tab and the anchor point is a good idea. Hopefully you won't need it, but I usually seem to. I think every plane I have except the Shoestring and the Magnum(R.I.P) needs one. I carry several aluminum ones in my flight box of various sizes and degrees of deflection.
Rusty

I've read here about trim-tabs before. How does the adjustment part function? I was trying to envision a way of doing it. What I was thinking; is a thin steel strip/tab mounted chordwise inside the wing, and extending out a slot in the T/E. A captive sheet-metal screw would thread through the inside center of the strip. Turning the screw in/out would cause the strip to bow in either direction. Is that thinking way too far outside the "tip-weight" box?

Here's the finished trim tab, 4-40 all thread with adjustable ball links:
Brodak Mustang Build - Page 3 2WfJZCj

**RknRusty** Tue Dec 22, 2015 9:11 pm

That'll do it.
I think I'll add one to my Twister wing, now on the table. I'll probably use #2 hardware with a small 1/2A horn, and punch through the wing as close as I can, to avoid drag as much as possible, Maybe anchor it to a ply web between the top and bottom spars. As far as weight, that's just some you don't have to add to the box.
Rusty

pkrankow Wed Dec 23, 2015 12:27 am

That looks anchored through the weight box lid.

Good idea.

Phil

JPvelo Wed Dec 23, 2015 12:40 am

pkrankow wrote:That looks anchored through the weight box lid.

Good idea.

Phil

Thanks Phil,

I was trying to figure out how make a hard attachment point and realized I had one already.

**Cribbs74** Wed Dec 23, 2015 1:17 am

Good job Jim, very clean.

**Cribbs74** Wed Dec 23, 2015 1:18 am

RknRusty wrote:That'll do it.
I think I'll add one to my Twister wing, now on the table. I'll probably use #2 hardware with a small 1/2A horn, and punch through the wing as close as I can, to avoid drag as much as possible, Maybe anchor it to a ply web between the top and bottom spars. As far as weight, that's just some you don't have to add to the box.
Rusty

You could just fly it and see if it even needs one. Wink

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