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HelicopterScale Model RC Helicopters › eCobra / Swift 16 Build
12-26-2008 11:51 PM  8 years agoPost 201
Dr.Tim

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Mojave Desert

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Both wood beams should be the same length .. they are rough cut in the kit but are close, Should only need a light sanding to square them up.

Dr.Tim

From Simple minds come simple ideas! Approach Engineering

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12-27-2008 12:09 AM  8 years agoPost 202
WrenFlyer

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Mississippi

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I put the fuselage bottom on and roughed in the canopy. Sanded the beams to square them up and they were perfect! It's all epoxied and clamped waiting to dry!

Mr. Haney

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12-27-2008 04:41 AM  8 years agoPost 203
WrenFlyer

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Patrick and Dr. Tim....thanks for the help today!

Mr. Haney

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12-27-2008 11:06 AM  8 years agoPost 204
Seaviper

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Central MS

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Looking good Alan! I better get a move on before you pass me.. The flybarless thing looks great too. I'll experiment with that at a later date.

Should have some pictures of the mechs in my own ship today or tomorrow.

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12-27-2008 07:17 PM  8 years agoPost 205
DogWoodrrApprentice - Bend, OR. USA - My Posts: All  Forum  Topic

Thought I'd go ahead and post this here since Dr. Tim is a regular visitor

Seems the shafts for the tail belt guides I got in my Apache kit are a bit long, with the plastic parts fully seated it's wider than the tail structure.

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12-27-2008 07:26 PM  8 years agoPost 206
Dr.Tim

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Yep, Simple fix, go ahead and drill the hole in the plastic bits all the way through. Then, after they are installed put a small drop of CA on the outside to keep the shafts from working out.

Dr.Tim

From Simple minds come simple ideas! Approach Engineering

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12-27-2008 07:38 PM  8 years agoPost 207
DogWood

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will do Dr.Tim, thanks.

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12-27-2008 10:24 PM  8 years agoPost 208
Seaviper

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Central MS

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Dogwood..All posts welcome sir!

DR Tim...Thanks for following this thread!

Got the final check flight done on my mechs today. All good.
The mechanics have 17 flights on them. After about 15 flights, the metal swash developed quite a large amount of play. I switched to the plastic version from the Swift 16 kit. Also, the metal washout base developed slop as well. It has been replaced by the plastic version too. I am anxious to see if the other 620Se I have develops the same issues once built.

The Swift 620SE likes tight main blades and tail blades. Too loose and you'll get some vibes. This is without a doubt the smoothest set of mechs I have ever flown.

In the image below, Temp A is motor, Temp B is ESC, Temp C is batt

Rounded the nose of the Cobra some more to the point where I like it now.

Going to start mech install tonight.

As a side note, down here in FL we have alot of bugs. Consequently they get all over the flybar and blades. I have been using a little WD-40 on a wrag to wipe down the main blades, flybar, and tail blades after each day of flying. Takes the buggers right off.

Reminds me of when I was flying Cardinals, the Cardinal owners used Pledge (Lemon worked best...no joke) to clear up their hazy plexiglass windshields.

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12-28-2008 12:15 AM  8 years agoPost 209
WrenFlyer

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Mississippi

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A quick update. Had a real good day! I'm really, really enjoying this build.

Mr. Haney

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12-28-2008 10:45 PM  8 years agoPost 210
DogWoodrrApprentice - Bend, OR. USA - My Posts: All  Forum  Topic

think I have a wee bit of a problem here, shouldn't the re-enforcement plywood parts as being the same height as the balsa sides?

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12-29-2008 12:44 AM  8 years agoPost 211
Seaviper

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Central MS

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Dogwood...I looked at my Apache plans and looked at the parts, and mine look like yours. I don't know if there is a problem or not really.

I think the Dr needs to answer this one.

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12-29-2008 01:43 AM  8 years agoPost 212
DogWood

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looks like there might also be an issue mounting the vertical fin, seems the slots don't line up very well. starting to look like the fuselage side where "printed" a bit large (or the others a bit small?)

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12-29-2008 01:45 AM  8 years agoPost 213
Dr.Tim

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Mojave Desert

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Those ply parts need to move forward so the square holes line up (Those are for the landing gear blocks.) The Slot on the top were the wing goes looks as though I messed up again!, just need to cut that slot with the ply part in place. I'll eventually get it right!

Dr.Tim

From Simple minds come simple ideas! Approach Engineering

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12-29-2008 02:01 AM  8 years agoPost 214
Dr.Tim

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Problem solved!!

Dr.Tim

From Simple minds come simple ideas! Approach Engineering

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12-29-2008 02:35 AM  8 years agoPost 215
WrenFlyer

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Mississippi

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Day 3 quickie update. I'm actually having fun with this!

Tedious work getting the transmission housing complete, but well worth the effort. Thanks again for this thread and all of your pictures, Patrick! This has made my project much easier. Between this and the Approach manual you can get a good idea about how something supposed to look!

I used a combination of your technique and the Approach one to attach the doghouse. I used the balsa guides and 30 minute epoxy with micro balloons to seat the doghouse into.

Mr. Haney

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12-29-2008 02:36 AM  8 years agoPost 216
WrenFlyer

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Mississippi

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One more of the doghouse.

Mr. Haney

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12-29-2008 02:40 AM  8 years agoPost 217
DogWood

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Bend, OR. USA

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Looking good Alan, coming along nicely.
you're going to pass Patrick at this rate

Just got off the phone with Dr. Tim, he should have corrected parts on the way to me tomorrow

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12-29-2008 03:03 AM  8 years agoPost 218
Dr.Tim

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Mojave Desert

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Alan, I noticed a sheen on the wood. What did you use to seal the wood with? Looks GREAT!!

Dr.Tim

From Simple minds come simple ideas! Approach Engineering

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12-29-2008 03:16 AM  8 years agoPost 219
WrenFlyer

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Mississippi

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That's where I spilled some thin CA...

Other than that...haven't sealed the wood, must be how the flash is hitting it.

I'm going to try making a scale air data sensor, should look good if I can pull it off.

Mr. Haney

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12-29-2008 05:15 AM  8 years agoPost 220
WrenFlyer

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Mississippi

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A neat little and easy detail project for your Cobra, An Airborne Laser Tracker. (ALT) I did a quick "How to" here: http://runryder.com/helicopter/t483247p1/?p=3940062#RR

Mr. Haney

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HelicopterScale Model RC Helicopters › eCobra / Swift 16 Build
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