RE: CMPro Giles 202 - 50  
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RE: CMPro Giles 202 - 50 - 7/14/2008 6:05:59 PM   
ysteve1


 

Posts: 44
Joined: 11/8/2002
From: San Antonio, TX, USA
Status: offline 		we checked the battery afterwards and it was still registering 5.0V (this was out of the plane) plugged it back into the plane and the ground range check was still good. and since both "actions" happened on oppisite ends of the field, i am leaning towards battery or reciever. The other plane i had at the field flew fine for 5 flights so i at least had 1 intact plane to bring home.

The fix on the Giles shouldn't be too hard but it'll never have that great looking covering. oh-well that's why we buy glue.....


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steve

(in reply to opjose)
       Post #: 126

RE: CMPro Giles 202 - 50 - 8/1/2008 1:01:10 AM   
blvdbuzzard



Posts: 1487
Joined: 6/16/2002
From: boulevard, CA, USA
Status: online 		Having second thoughts about putting a YS .63 in the nose of this plane. It is very light and I wonder if the YS would tear it up? It seems like it would fly with any old .45 in the nose. Just wondering if this is going to be to much power for this plane?


Thanks.

Dru.

(in reply to aenigma)
       Post #: 127

RE: CMPro Giles 202 - 50 - 8/1/2008 1:18:44 AM   
paul49


 

Posts: 20
Joined: 7/15/2007
From: Newcastle, AUSTRALIA
Status: offline 		Hi Dru,

I have an OS .55AX in mine. Still a very new engine, running it rich, and have only put 6 tanks through it so far. It doesn't feel underpowered but I'm just flying it around getting the feel of it and running the engine in.

Cheers,
Paul.

(in reply to blvdbuzzard)
       Post #: 128

RE: CMPro Giles 202 - 50 - 8/1/2008 3:29:08 AM   
opjose



Posts: 5832
Joined: 11/26/2005
From: Poolesville, MD, USA
Status: offline
quote:

ORIGINAL: blvdbuzzard

Having second thoughts about putting a YS .63 in the nose of this plane. It is very light and I wonder if the YS would tear it up? It seems like it would fly with any old .45 in the nose. Just wondering if this is going to be to much power for this plane?


Thanks.

Dru.


If this is the supercharged 4C then it would be a good match.

Not all .45-.46's are created equal... e.g. an LA .46 would certainly be anemic in this plane... I run the LA .46's on .25 sized planes... lesser output .40+ engines would be OK but would certainly not produce unlimited verticals.

Now the "lowly" Tower Hobbies .46's are stump pullers once tuned properly, and do a good job yanking this plane around...



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Build em'', fly em'', crash em'' and build more.

(in reply to blvdbuzzard)
       Post #: 129

RE: CMPro Giles 202 - 50 - 8/1/2008 3:15:39 PM   
blvdbuzzard



Posts: 1487
Joined: 6/16/2002
From: boulevard, CA, USA
Status: online 		Well I ended up going with MORE power then not. I have the YS-63 bolted up now. Yes it is the super charged 4C engine. It is the same engine I had in my Hobbico Spectrum. That was a good match.

I have been told the Magnums are under powered dogs. I must have gotten a good one because it pulls pretty damn hard.

For the Giles 202 50 I was torn between the YS 63 and the Magnum 52. Both will rip the wings off this thing. I will be getting new servos next week for this plane. I am thinking about the Hobby People CS-601 servos. I am on a pretty tight budget right now and can not spend a lot on new servos. I have read about the 601's and them seem pretty good for the money.

I will be using ball links on both ends of the push rods instead of the kwik links. After flying helicopters, I like the ball links now.



Thanks.


Dru.

(in reply to opjose)
       Post #: 130

RE: CMPro Giles 202 - 50 - 8/3/2008 5:17:32 AM   
blvdbuzzard



Posts: 1487
Joined: 6/16/2002
From: boulevard, CA, USA
Status: online 		Well she is as done as I can make her until I get the servos. She is a beauty. I am still blown away I got it for that price.

She is just sitting here looking pretty. I do hope she flies as well as she looks.

I have to mount the elevator and both aileron servos. It was a total pain to get the the elevator push rod in stalled. I had to fight like crazy to get the forked end through the fuse. It was like wrestling an octopus. Finally got it and it seems solid. I think it would have been better with two servos for the elevator.


Dru.

(in reply to blvdbuzzard)
       Post #: 131

RE: CMPro Giles 202 - 50 - 8/4/2008 3:04:10 AM   
opjose



Posts: 5832
Joined: 11/26/2005
From: Poolesville, MD, USA
Status: offline 		The trick to it is to shove a wire or thread through from the tail, on each side.

Affix the wire/thread to each side of the "fork" and pull it out.

It's quite easy.

Consider adding a CF support strut to the elevator, especially since you are overpowering the plane.


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Build em'', fly em'', crash em'' and build more.

(in reply to blvdbuzzard)
       Post #: 132

RE: CMPro Giles 202 - 50 - 8/4/2008 4:29:19 AM   
blvdbuzzard



Posts: 1487
Joined: 6/16/2002
From: boulevard, CA, USA
Status: online 		It seems to be made for the YS. Balance is right on the money. When I get the battery and Rx in place it will be perfect. I was thinking of putting (2) HS-65MG servos in the tail for the elevators. It will be a month or two before I can get it in the air. I need a Rx, battery, (3) servos to finish it.



Dru.

(in reply to opjose)
       Post #: 133

RE: CMPro Giles 202 - 50 - 8/4/2008 4:44:27 AM   
opjose



Posts: 5832
Joined: 11/26/2005
From: Poolesville, MD, USA
Status: offline 		The MG's will be fine, although the plane does well with standard to mid torque servos...


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Build em'', fly em'', crash em'' and build more.

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       Post #: 134

RE: CMPro Giles 202 - 50 - 8/17/2008 12:25:35 PM   
mattmc


 

Posts: 6
Joined: 12/6/2006
From: Melbourne, AUSTRALIA
Status: offline 		Everything was going so smoothly! Trimmed nicely, rolls were sweet, then everything went pearshaped. It started a spiral dive to the right. Left aileron didn't have any noticeable effect. Just before it fell below the treeline, I gave up, cut the throttle and concentrated on exactly where it was going down. Our club is right next to the Yarra River and near some thick bush. I've never had to search in there before but I know it can get pretty thick amongst the trees.
I picked out the tree (second biggest gum) where I thought it went down and headed off to search. I was a fair distance away went it went down. I was pretty sure I heard it smack into a tree and was praying it hadn't gone into the river. This time of year (winter) the river is full, fast and cold.
After searching for about 20 mins and no sign of it , I was pretty sure it had come down on the far side of the Yarra. The problem is, to get to the other side of the river, I have to go the long way (10-15kms) via Yarra Glen and into private property.
I thought it might be a long search so I called a friend who was close by for help searching. After a quick drive to the other side of the river and about 20 minutes searching, I found the remains in a paddock about 15 meters from the tree / fence line. Thankfully the cows had left it alone.

I was actually pretty happy when I found the wreckage. I'd already written it off, I was just hoping it hadn't gone in the river and I'd lost everything.

My theory for the cause. Right aileron failure. You can see from the photo, the covering and aileron looks like it's been ripped off and is consistent with the flight performance as it went down. Both the aileron servo's were still mounted and connected ok.

The lesson? It was bought as a reject that had faulty covering. I tried to keep the colour scheme by using clear cover over the main panels. Could the aileron covering have cracked as the fuse and wing had and ripped the aileron off? That's the theory I'm going with.

The bright side is, now I have a spare engine and gear to put in a new plane!












(in reply to ysteve1)
       Post #: 135

RE: CMPro Giles 202 - 50 - 8/17/2008 7:24:37 PM   
opjose



Posts: 5832
Joined: 11/26/2005
From: Poolesville, MD, USA
Status: offline 		My take:

That's a classic case of flutter.

A simple aileron failure would have rippd up the aileron at one originating point...

e.g. the horn would have been pulled out, or one side would be fractured with a corresponding break in the covering. Usually with the balsa shearing along the stress point.

In your case ( from your pictures ) the entire aileron is somewhat uniformly fragmented as if excessive vibrations pulled the trailing edge off or up/down. Unless the surface was vibrating excessively, you really don't see the type of fracture your wing shows...

That the horn held up, tends to indicate the control surface was somewhat free to move, too.

So either the linkage gave, a servo gear stripped, or the servo was unable to handle the high loads.

I fly mine with cheap 130oz/in servos ( 9.00 each ), and ( knocks on wood ) the extra torque has prevented this.

The plane flies fast so even in a slight power on dive, with a powerful engine, flutter can be a real problem if something is amiss.

Since you know what you are doing, I'd put my money on the servo gear stripping under load.





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Build em'', fly em'', crash em'' and build more.

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       Post #: 136

RE: CMPro Giles 202 - 50 - 8/20/2008 9:54:05 AM   
kk23


 

Posts: 8
Joined: 1/24/2006
From: , BC, CANADA
Status: offline 		I am almost done my giles but I was wondering the best way to mount the wing with those self grabing nuts that comes with the hardware package.

(in reply to opjose)
       Post #: 137

RE: CMPro Giles 202 - 50 - 9/25/2008 6:35:40 PM   
mtboone


 

Posts: 6
Joined: 4/7/2008
From: McAllister, MT, USA
Status: offline 		I just built the Giles 202 .50 size and want to make it all electric.....however I have no idea how to size everything. Weight is supposed to be 2550 grams, length is about 1407 mm and wing span 1400 mm.

Any help would be greatly appreciated!

Matt

(in reply to aenigma)
       Post #: 138

RE: CMPro Giles 202 - 50 - 9/25/2008 6:52:59 PM   
opjose



Posts: 5832
Joined: 11/26/2005
From: Poolesville, MD, USA
Status: offline
quote:

ORIGINAL: mtboone

I just built the Giles 202 .50 size and want to make it all electric.....however I have no idea how to size everything. Weight is supposed to be 2550 grams, length is about 1407 mm and wing span 1400 mm.

Any help would be greatly appreciated!

Matt


The way you'll need to go about this is to equate engine HP for the glow version to the electric modification.

1 HP is about 745 watts.

The Giles is a .50 sized plane, so you want at LEAST 1.6bHP output from an standard glow engine.

So find yourself a 1200 watt motor.

e.g. one of these will do

Click me!

Next determine the voltage you will be using...

I'd go for six cells or 22 volts, since you can use TWO 11 volt 2C packs in parallel to obtain the higher voltage, while you'll be also able to use the same packs on smaller planes later... You'll also find that they may be cheaper this way too..

You'll need 2 packs to fly, and at least 2 more to charge while flying... and this is VERY optimistic... ( I usually purchase at least six SETS of packs! ). I'd say 4000mAh 11v packs will be a minimum.

Next get yourself a high voltage 50 to 60A ESC to handle the power output.

You'll need a watt meter, to make sure that you end up selecting the right prop and that you are keeping the power draw within the battery, ESC's and motor's ability to han