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HomeScaleAircraftScale HeliScale Helicopter Main Discussion Docs  MD 900
10-29-2013 12:38 AM  5 years agoPost 41
bwellmaker

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Long Island

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UIH,

Actually they are M3 washers that are .5mm. I used the M3's for mock-up. I do have a box full shims though. If you need a shim I got it, except the one I needed today. With a 76 and Comanche on the bench, shims are critical to making all this monkey motion work.

East Coast Scale has the "shim plates" which I ordered today. They cover the entire length of the mount and come in several different thicknesses so we can have a perfect mesh and be one with the world.

The shim plates have bolt slots cut on one side so the shim can simply slide between the mount and the block. I will post some pics when they get here.

Now that I look at the photo, it looks a bit like a hack. LOL

Dang, I better look closer before I post.

B

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10-29-2013 01:05 AM  5 years agoPost 42
xcellgasman101

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WOODWARD, OKLA....

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Now that I look at the photo, it looks a bit like a hack. LOL

Dang, I better look closer before I post.
Construction Pics look awesome, it's just in a building phase, that is changing all the time,, Thanks for taking the time to post,, Awesome Heli by the way!!! XGM/VGM

John Crotts
www.soonerhelicamproductions.com

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10-29-2013 01:54 AM  5 years agoPost 43
Thumper217

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Slidell, LA - USA

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If that's a hack job than I have no business being in this hobby. I was thinking it looked pretty clean. Nice work Butch and thanks for posting.

Andrew

Thumper

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10-29-2013 02:24 AM  5 years agoPost 44
Mojave

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Palos Verdes, Ca. USA

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LOL, you're definitely not a hack... If you ever need shim stock, shoot me a PM. We use aerospace peel shims at work all the time. They come in sheets, we then cut them to size etc.. You just peel a layer at a time until they are the thickness that you need. Each layer is .002 thick.
Barry

All helis and planes have an expiration date stamped on them...you only find it after you crash!!

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11-01-2013 01:10 PM  5 years agoPost 45
bwellmaker

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Long Island

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Barry,

I will take you on the the shim stock.

These are the shims East Coast Scale sales for the engine mounting. Because the bearing block mimics an engine, using shims here is not uncommon. With machining differences, gearing changes etc this is the best way to get the best clutch to drive gear mesh.

Most of the structure is complete and about ready to be bonded with the fuse. I have a few mechanic attach points to install some threaded inserts and a couple of tweaks here and there, then a final check of everything then on with the Aero Poxy.

Checking stringer height for the cockpit floor. The right stringer is a touch too tall.

Ever wonder how and where to fit the bulkhead on the isdide of the fuse? Lay a piece of 1/8 in fine line tape on the outside of the fuse and hold it up to the sun.

B

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11-01-2013 04:13 PM  5 years agoPost 46
coptercptn

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Mesa AZ. USA

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tip -o-the-day?

Home of the "Sea Cobra".....

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11-01-2013 05:19 PM  5 years agoPost 47
doorman

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Sherwood, Arkansas

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Looking Great!!!
Butch, "hack" is not even close to anything you do... it is looking great and looks as if you are going to be on a roll now...all the fun "stuff", now that the mechanics are set up..
I agree with Jim.. your blue fine line should be added to scale tip of the week thread...

Stay warm!!!!

Stan

AMA 2918-Team Spin Blades,,Castle Creations, Unique Aircraft

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11-01-2013 09:42 PM  5 years agoPost 48
Phoenix NOTAR

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Tallahassee, Florida USA

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Butch,

You may not want to use the very front bulkhead you have shown. It will really interfere with any cockpit detail (Like I should talk )
The very forward nose section is pretty strong as is with the windows installed.

Sandy

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11-01-2013 10:07 PM  5 years agoPost 49
bwellmaker

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Long Island

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Thanks for the reply Snady,

What goes across the front side of the cockpit where I have the bulkhead? Its tough to see in the photos.

There is certainly something there.

There will be lighting hole/s to mimic the full scale.

I do plan to have a fully detailed cockpit at some point.

B

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11-01-2013 11:39 PM  5 years agoPost 50
bwellmaker

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Long Island

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I found it,

I had the bulkhead canted.

This will be much better.

Thanks for the heads up.

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11-02-2013 02:42 AM  5 years agoPost 51
Mojave

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Palos Verdes, Ca. USA

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Looking great!! I'm gonna have to get one of these some day... My build will be easy after you guys paved the way Bud any time you need the shim stock, just pm me the dimensions that you need and I'll shear it to size and mail it to you. Hell, I'll even put the hole pattern in it, then all you need to do is peel it to the right thickness and you're good to go!
Barry

All helis and planes have an expiration date stamped on them...you only find it after you crash!!

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11-02-2013 11:13 AM  5 years agoPost 52
Copter Doctor

rrProfessor

Enterprise/ft.rucker ,al- home of army aviation

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looking great Butch, another masterpiece being created in long island. A few years ago I had the opportunity to fly one of these machines. I learned the notar isn't the only thing unique about this heli and it was very much fun to fly

drive a rotary, fly a rotorcraft

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11-03-2013 10:41 PM  5 years agoPost 53
bwellmaker

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Long Island

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UIH,

Due to the wonderful LINY weather today, I am just about ready to bond this schnizzle together. The cockpit floor will come a bit later but the main support structure is right where I want it to be. Everything fits together real nice.

B

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11-03-2013 11:19 PM  5 years agoPost 54
Thumper217

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Slidell, LA - USA

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Looks good Butch! did the wood work come pre-cut or is that your handy work? Are you going to use BVM to bond and will it fill the small gap between the wood work and the fuse?

Sorry for all the questions but I'm trying to learn

Andrew

Thumper

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11-04-2013 12:39 AM  5 years agoPost 55
bwellmaker

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Long Island

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Thanks Andrew,

All this wood work is from scratch. The Vario Notar kit was originally designed for a nitro power plant. There was no need for this type of structure, however, the kit did come with some support which tied the mechanic tray to the bottom of the fuse but it was not designed to support 6 to 7 pounds of batteries.

I will be using the BVM Aero Poxy with the gun and mixing tips. It does such a nice job of application that the extra cost is worth every penny.

The gaps you see are very small. There is a bit of fitting still needed but nothing that will make a significant change. The spaces you see may be .04 to .06" if that. If a gap between the fuse and structure is in the .07-.09" or greater, I would rework the fit.

Keep in mind that the inside of the fuse is not alway be as nice as the outside. There may be ply overlaps or seams that make it difficult to have the perfectly straight structural components.

Dang, Just slather it with epoxy it will be fine. LOL

UIH,

B

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11-04-2013 03:29 AM  5 years agoPost 56
joeb56

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Newcastle,NSW - Australia

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Butch
I used their QPoxy the other day
Does not run - not that its much of an issue with Aero Poxy but it sets in 5 minutes- BVM Jet states its not quite as strong - sets a bit clearer than the Aero Poxy
Just a thought
Cheers
joe

On the J curve of all things Heli, I am still going down hill, FAST

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11-04-2013 11:54 AM  5 years agoPost 57
bwellmaker

rrKey Veteran

Long Island

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Thanks for the head up joeb56,

I have not tried the QT Poxy but will have to give it a shot. I am not sure you can ever go wrong with any of the BVM glue products. I know its re-branded Hysol but I am very partial to the gun and mixing tips. That makes things so much easier to apply.

FYI,

You can buy the gun and mixing tips from McMaster Carr and save a few bucks for more beer.

UIH,

B

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11-05-2013 03:35 PM  5 years agoPost 58
bwellmaker

rrKey Veteran

Long Island

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UIH,

It Is One

I got the structure in place and roughly 70% bonded to the fuse yesterday. Its tough to get 100% bond, and the bond joints I like to see, on the first bond simply because its tough to flip the fuse around to get access to many areas and not compromise what is already bonded, so we brink beer and wait. Once the first bond has set, I can remove the mechanics and have access to all bond or attach areas

There are some more minor structure pieces that have yet to be installed but the majors structural parts are in place. This is a real solid install.

B

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11-05-2013 04:51 PM  5 years agoPost 59
doorman

rrProfessor

Sherwood, Arkansas

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Looking Real Good...
Build is looking great, and not long before you will be getting to the really fun "stuff".. beatiful job as usual...

I tried a couple of the tubes of the other adhesive... found that my original gun would not work with it.. the aero poxy has two same size plungers... the QT has one large hole and one smaller..
Something to watch for if you do give it a try...
I think the latest version gun will work with both types...

Stan

AMA 2918-Team Spin Blades,,Castle Creations, Unique Aircraft

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11-05-2013 06:34 PM  5 years agoPost 60
Mojave

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Palos Verdes, Ca. USA

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"So we Brink beer and wait" Is that like, "I'm not think as you drunk I am", or "Tarbender, I'll have another deer"?? LOL, just bustin your chops It's looking good and that's the same way that I bond my woodwork, it keeps everything from shifting around during the cure.

Stan, yup you're correct. The new aeropoxy gun has the big/small plunger.
Barry

All helis and planes have an expiration date stamped on them...you only find it after you crash!!

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