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Old Jan 10, 2011, 10:59 AM
Yeah, I can fly...
wyldkrd's Avatar
Mesa, Arizona
Joined Jun 2005
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Originally Posted by Boogie_ View Post
Pics dude!
Later today. I took some yesterday just couldn't post them.
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Old Jan 10, 2011, 01:17 PM
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symdnn's Avatar
Houston, Texas
Joined Dec 2010
44 Posts
Here are some pictures
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Old Jan 10, 2011, 01:22 PM
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Nice work!

I like floaters, but that clipped wing has my attention!
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Old Jan 10, 2011, 01:24 PM
Yeah, I can fly...
wyldkrd's Avatar
Mesa, Arizona
Joined Jun 2005
2,459 Posts
Where are you placing your ESC? I saw in one pic right on top of the battery. You might want to put it a little further away. A few of use have "suspended' them with zip ties just below the canopy section, sort of a cut out for it.

What battery connectors are you using? Are they rated for such high output as our 3300 lipos?

Just curious, overall looks about what I have in mine.
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Old Jan 10, 2011, 01:55 PM
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symdnn's Avatar
Houston, Texas
Joined Dec 2010
44 Posts
Quote:
Originally Posted by wyldkrd View Post
Where are you placing your ESC? I saw in one pic right on top of the battery. You might want to put it a little further away. A few of use have "suspended' them with zip ties just below the canopy section, sort of a cut out for it.

What battery connectors are you using? Are they rated for such high output as our 3300 lipos?

Just curious, overall looks about what I have in mine.
The ESC is on the top of the battery and it is very secured but I will have to test the CG to see if I need to move it away.
The connectors are from fry's electronics I don't know what is the exact rating but I will test them in my first flight and see what happen. I've seen this plane fly the whole flight on half throttle so I don't think the connectors will be overloaded anyway. I have also tested the system on full throttle for couple of minutes and there was no heat generated from any of the components.
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Old Jan 10, 2011, 02:33 PM
Yeah, I can fly...
wyldkrd's Avatar
Mesa, Arizona
Joined Jun 2005
2,459 Posts
Quote:
Originally Posted by symdnn View Post
The ESC is on the top of the battery and it is very secured but I will have to test the CG to see if I need to move it away.
The connectors are from fry's electronics I don't know what is the exact rating but I will test them in my first flight and see what happen. I've seen this plane fly the whole flight on half throttle so I don't think the connectors will be overloaded anyway. I have also tested the system on full throttle for couple of minutes and there was no heat generated from any of the components.
Cool (literally?)
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Old Jan 10, 2011, 07:10 PM
Da' Cajun
Boogie_'s Avatar
Lake Charles, Louisiana
Joined Jun 2009
2,866 Posts
That's going to be difficult to get the batt in and out with the ESC on top of it. The side door design looks like it would be a good idea but in real world use I find it tough to get a hand in there. With the ESC in the way it will be a hassle. Best to hang the ESC with zip ties from the "roof" just ahead of the windshield.

Also, one of symdnn's pics shows what I was talking about a few pages back.
The sides of the fuse have a lightening hole cut out and the covering is exposed to abuse when replacing the battery.
I tore the covering on both sides before I realized what was going on. And I didn't think I was being rough getting at the battery.
I glued some lite ply pieces over the holes to save the covering.
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Old Jan 10, 2011, 08:04 PM
Dive now work later
symdnn's Avatar
Houston, Texas
Joined Dec 2010
44 Posts
Quote:
Originally Posted by Boogie_ View Post
That's going to be difficult to get the batt in and out with the ESC on top of it. The side door design looks like it would be a good idea but in real world use I find it tough to get a hand in there. With the ESC in the way it will be a hassle. Best to hang the ESC with zip ties from the "roof" just ahead of the windshield.

Also, one of symdnn's pics shows what I was talking about a few pages back.
The sides of the fuse have a lightening hole cut out and the covering is exposed to abuse when replacing the battery.
I tore the covering on both sides before I realized what was going on. And I didn't think I was being rough getting at the battery.
I glued some lite ply pieces over the holes to save the covering.

You are right however I am not planning to remove the battery for a while. I will charge it while in the plane.
Here are more pictures for the tail set completed and the CG of the plane.
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Old Jan 11, 2011, 11:40 AM
BEAR-AvHistory's Avatar
RDRC NC USA
Joined Mar 2009
569 Posts
Any reason why you did not mount the ESC to the motor box in the airstream from the nose vents?

Generally, charging a Lipo onboard the plane is not a good plan.
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Old Jan 11, 2011, 11:25 PM
Yeah, I can fly...
wyldkrd's Avatar
Mesa, Arizona
Joined Jun 2005
2,459 Posts
Here are some pics of what I have been working on. The first pic is before I did anything other than re-mount the motor. I shaved down the area around the cowl and cut the cowl down as well. It's not pretty yet but I think it will look halfway decent when I am done. I'll clean up the edges on both the fuse and cowl and be painting the cowl to match. Prop clearance is good but I might put a little more in to cover the right/down thrust. I might use magnets to secure it or just out some ply or birch up behind to secure with screws. Still need to cut the remaining holes in the cowl and put the right/down thrust in the motor.
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Old Jan 12, 2011, 03:56 PM
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symdnn's Avatar
Houston, Texas
Joined Dec 2010
44 Posts
I have mounted the ESC to the top as a final step. Here are the pictures
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Old Jan 12, 2011, 04:36 PM
Dive now work later
symdnn's Avatar
Houston, Texas
Joined Dec 2010
44 Posts
This is the plane after completed. I don't know but this is my first build so please let me know what you guys think?

http://www.youtube.com/watch?v=3SYLv_XrFH8
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Old Jan 12, 2011, 04:43 PM
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Looks as it should, to me: I'm trying to decide between the J-3, L-4 or clipped wing! I like the notion of having flaps, but can't get a comment from anyone on how well they work with this model.

Nice work-report on maiden, please.
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Old Jan 13, 2011, 12:42 AM
Dive now work later
symdnn's Avatar
Houston, Texas
Joined Dec 2010
44 Posts
Quote:
Originally Posted by angel food View Post
Looks as it should, to me: I'm trying to decide between the J-3, L-4 or clipped wing! I like the notion of having flaps, but can't get a comment from anyone on how well they work with this model.

Nice work-report on maiden, please.
Thanks for the complement. I will post the maiden video for sure.
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Old Jan 13, 2011, 06:48 AM
Da' Cajun
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Lake Charles, Louisiana
Joined Jun 2009
2,866 Posts
Cub looks great symdnn.
You may think about opening up the two intakes in the front of the cowl to let in some air for cooling.
And the rubber bands need to be doubled up to be strong enough to hold the model up on landings.

Quote:
I'm trying to decide between the J-3, L-4 or clipped wing! I like the notion of having flaps, but can't get a comment from anyone on how well they work with this model.
I have the L-4 and the flaps work fine. There's just no need for them on this plane.
It flys really slow with no flaps and stupid slow with flaps. ...slow enough to bite you.

I was testing out the flaps the other day at altitude and it has a nasty stall when pushed to far. Really drops a wing and falls over hard. If you do use the flaps it just takes a smidge of droop, 1/2" max.
I've yet to make a landing with the flaps down.

Julian
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