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Author Topic: The sub 400mg EZB plunge!  (Read 12976 times)
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ykleetx
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« Reply #75 on: February 07, 2013, 09:42:17 PM »

Don, did you have a flying session, yet?
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dslusarc
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« Reply #76 on: February 07, 2013, 11:02:36 PM »

There was one this past Tuesday but I forgot my brother was giving his first lecture at the local Audobon Society that night so went to support him. However, I am geared up for this upcoming Tuesday. So will be cutting some rubber this weekend and making up some motors and half motor sticks.

Don 
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ykleetx
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« Reply #77 on: February 07, 2013, 11:29:54 PM »

I see that your brother is a birdwatcher.  So am I!  Any other birders in the family?
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Tsova
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« Reply #78 on: February 08, 2013, 12:31:43 PM »

Don,    Do you have weekly flying sessions? At Andrews?
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dslusarc
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« Reply #79 on: February 08, 2013, 12:49:24 PM »

I see that your brother is a birdwatcher.  So am I!  Any other birders in the family?

Big time into birds and airliners actually. Here is his facebook page you can see some of his photos:
http://www.facebook.com/chuck.slusarczyk/photos_stream

Here is his airliner website:
http://www.opshots.net/
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dslusarc
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« Reply #80 on: February 08, 2013, 12:51:55 PM »

Don,    Do you have weekly flying sessions? At Andrews?

Weekly indoor RC session at a gym on Tuesday nights from 6:30 to 9:30pm but they have a second gym the size of the small Andrews gym that we can have for ourselves. There are only about 10 people in this club and they will pause to let an indoor model fly in the main gym. 

Don
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dslusarc
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« Reply #81 on: February 11, 2013, 11:12:34 PM »

EZB is in the box ready for test flying tomorrow night. I made up some half motors tonight. Will let you know how it goes.

Don
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dslusarc
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« Reply #82 on: February 12, 2013, 08:02:26 PM »

No flying today. Got to the gym and a musical rehearsal was starting, so went to the side gym and was filled with chairs and the air system blowing. Will try again next week :-(
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ykleetx
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« Reply #83 on: February 12, 2013, 09:16:06 PM »

Oh NO!  Still, the wait will be worth it ...
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Olbill
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« Reply #84 on: February 12, 2013, 09:24:28 PM »

I feel your pain Don. I've had many similar experiences.
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dslusarc
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« Reply #85 on: February 12, 2013, 10:19:35 PM »

I think this means this EZB will fly well! Usually a plane that has roadblocks thrown in my way will always fly the best :-)  So I am working on covering my F1L tonight instead.
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ykleetx
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« Reply #86 on: February 21, 2013, 02:41:12 AM »

Any updates, Don?
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dslusarc
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« Reply #87 on: February 21, 2013, 07:52:12 AM »

No, school was closed Tuesday for teacher service day or something similar. The good news is that we may have found a new Cat 1 indoor site. The church my parents go to has a fairly nice sized gym and the ceiling is smooth tile in the center up until about 6 feet from the wall. I have never seen a gym like this before, it is like a typical open girder gym then they decided to install a flat ceiling over most of the ceiling, the ceiling stops about 6 feet around in all four sides. I suspect there will be easier access to this site so I am quite hopeful!

Don
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ykleetx
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« Reply #88 on: February 21, 2013, 11:57:18 PM »

That's great to hear.  Any chance it would be available Saturday night before the Kent contest Smiley ?
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dslusarc
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« Reply #89 on: February 26, 2013, 11:13:11 PM »

Test flew the EZB today. Did one half motor flight that went up about 15 feet did ~7:30 then wound a few extra turn in it as my goal for the day was 10 minute half motor no touch and I overdid it a little, I did find the model will need a little opposite wash. It started to tuck some and I decided to let it keep going as it was slowly going down and I though it would pull out after a few laps but the prop hit the floor and after a few hits to the ground one prop spar broke. It is an easy fix and I will add a little opposite wash to the wing. I do think this wing is a little too weak though, it flexes more than I like and I still have the slightly heavier wing I initially built that I will try and see if there is a flight time difference. The inboard leading edge spar seems to be the one causing issues. Perhaps I should have used a tapered wing spar. I took some video, it is uploading to youtube now.

Don

    
« Last Edit: February 26, 2013, 11:47:20 PM by dslusarc » Logged
dslusarc
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« Reply #90 on: February 26, 2013, 11:46:56 PM »

The first video did not get processed correctly so uploaded again. Here is the new link:

http://youtu.be/WtxHLm_xcu0
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ykleetx
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« Reply #91 on: February 27, 2013, 02:00:37 AM »

Nice video.  It seems to fly really well.  Slow and steady.

The center span of the wing looks good, but the tips look to be deflected up a lot, although I don't know how they look at rest.  Because the wing tips are usually really wimpy, I make sure that the first 1/2" to 3/4" of the tips are strong enough.  My LE is .023" thick, 6.1# wood, tapered from .040" in the center to .030" at the dihedral.  My tip is .015" thick, 5.7# tapered from .035" to .025".

As you say, the opposite wash should do the trick to combat the tucking.

What's the prop diameter?
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« Reply #92 on: February 27, 2013, 09:04:33 PM »

The first video did not get processed correctly so uploaded again. Here is the new link:

http://youtu.be/WtxHLm_xcu0

Nice video....is that speed slower than F1D?

Regards
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dslusarc
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« Reply #93 on: February 27, 2013, 10:27:22 PM »

The wing does flex too much in my opinion. I have added some struts on this wing to see if it will be salvageable. But a new wing is already in process of being built. Prop is 12" diameter and has been repaired.   
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dslusarc
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« Reply #94 on: February 27, 2013, 10:28:41 PM »

Quote
Nice video....is that speed slower than F1D?

Seems pretty close!
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ykleetx
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« Reply #95 on: February 27, 2013, 11:34:06 PM »

The 250 mg EZB should be slightly slower than a F1D.  Sanborn's F1D passed my EZB in the air when we flew in Atlanta back in December.
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dslusarc
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« Reply #96 on: February 28, 2013, 10:47:47 PM »

Framed up two new wings today. Hope to get them covered tomorrow. Then back to the F1D build.
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ykleetx
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« Reply #97 on: March 01, 2013, 01:21:30 AM »

I had built two ultra light wings, but my cat, I believe, destroyed the first one.  Luckily, he destroyed the "heavy" one.  The only thing left is a wing tip that is now the rudder on my F1D.
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dslusarc
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« Reply #98 on: March 01, 2013, 01:30:16 AM »

My 1st microfilm model ever (I was about 14 years old) and I had just finished it and started to put it into a box as it was late at night. Just then our cat came by and jumped into the box as I still had the lid open as I was getting ready to put the prop in the box. Smashed it all into bits in about 2 seconds.

Don
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dslusarc
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« Reply #99 on: March 03, 2013, 06:40:26 PM »

New wing is covered and now just adding in the dihedral. This wing is VERY stiff and is 30mg heavier but that is fine with me. I will still have a 300mg EZB.
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