RE: Pitts Pythons in Customs now

RE: Pitts Pythons in Customs now
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RE: Pitts Pythons in Customs now - 4/25/2007 12:01:02 AM

V1 RO T8

Posts: 54
Joined: 10/7/2004
From: Copley, OH, USA
Status: offline

Thanks!

(in reply to Birddog-RCU)

Post #: 251

RE: Pitts Pythons in Customs now - 4/25/2007 12:06:33 AM

V1 RO T8

Posts: 54
Joined: 10/7/2004
From: Copley, OH, USA
Status: offline

Another thing cropped up: Doing touch and go's on a grass field caused one of the tailwheel springs to break.
Found replacement at ACE hardware, "Servalite Springs, #107U, Extension Spring, 4", 1/4" dia. .035 ga."
Should last longer, as it is heavier guage.

(in reply to bonedaddy41)

Post #: 252

RE: Pitts Pythons in Customs now - 4/25/2007 9:49:06 PM

alpapilot

Posts: 136
Joined: 1/8/2005
From: Newnan, GA, USA
Status: offline

Well, I covered the black trim on the top wing and behind the canopy with clear monocoat. Unfortunately, it now looks like a$$. Bubbles are everywhere. Has anyone found templates or patterns for the blac trim so I can cut some vinyl?

Thanks

(in reply to V1 RO T8)

Post #: 253

RE: Pitts Pythons in Customs now - 4/26/2007 8:11:56 PM

Unleaded Gaz

Posts: 12
Joined: 2/27/2005
From: Lincoln, UNITED KINGDOM
Status: offline

quote:

ORIGINAL: V1 RO T8

5 more flights today. CG is right on, thrust line needs to go to the right some more.

How much right thrust have you added please? It would be good to know before I line up the cowling.

(in reply to V1 RO T8)

Post #: 254

RE: Pitts Pythons in Customs now - 4/27/2007 1:20:26 AM

V1 RO T8

Posts: 54
Joined: 10/7/2004
From: Copley, OH, USA
Status: offline

I am going to add two washers behind each of the left-side engine standoffs.
If that is too much, I'll take one out, but I suspect it it should br correct.
I kept doing verticals, hands off, and trimming the rudder until it went straight.
Then I landed and inspected the rudder offset. The top of the rudder (the balance portion--front "overhang, if you will) was almost over the edge. In other words, about the thickness of the balsa leading edge; approximately 1/4".
There was no up/down thrust correction needed.
Hope this helps.

(in reply to Unleaded Gaz)

Post #: 255

RE: Pitts Pythons in Customs now - 4/28/2007 1:51:14 AM

kochj

Posts: 1504
Joined: 12/5/2005
From: Victoria, MN, USA
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I have noticed people have said many times of how they have never a ca hinge failed before.....
Most likely you have had planes that were "sport" planes. These sport planes were probably in the .40-.46 to .60 size range. So were dealing with a very light plane 4-6lbs and small control surfaces... Very little stress put on the hinges and very little vibrations due to the small glow engines.
They were most likely in the war bird style to trainer. These have a throw of about 1/4 of and inch on the elevators and ailerons. This is hardly enough movement to have any of the hardened CA that accumulates on the ca hinges to stress and crack...... The person then states CA hinges " CA hinges never have failed me"
Any 1.00+ size aerobat has +3inch throws w/ large surface areas that fully deflect 100's of times through a 10min flight.........
I think that one must way there own chances as to weather or not they want to go ahead with CA hinges..... Most do not apply them properly... Gob 10-15 drops of thin CA (more is better right?) Like I did Yes if you pin the ca hinges and apply only 2-3 drops of thin ca you could probably suspend a small vehicle from one side of the hinge, but who would do that?

I rest my case......

quote:

ORIGINAL: bonedaddy41

I got 2 more flights in today with a 20 to 25 mph wind out of the south. That much wind sure makes a floater hard to set down

Hammerheads are very straight and quick. Inverted flight is rock solid. I moved the weight back just a tad. It will fly hands off - either way (wheels up / wheels down) - straight and level. Very nice.

I do have some bad news. After all of my support for using the CA hinges ... I had 2 break on the rudder today I have never had a CA hinge fail ... and to have 2 fail on the same day surprises me. I don't know what caused it because I was not doing anything that stressful. The hammerheads were the only thing I did today that used a lot of rudder ... but that should not put a lot of stress on the hinges because the plane is pretty much stalled at that point. Anyway ..... I will eat a bit of crow now ... and I will replace the hinges with Robarts this week.

_____________________________

Winning isn''''t everything, it''''s all there is.

(in reply to bonedaddy41)

Post #: 256

RE: Pitts Pythons in Customs now - 4/28/2007 2:03:35 AM

bonedaddy41

Posts: 411
Joined: 6/6/2003
From: Denton, TX, USA
Status: offline

Nope. Sorry. Most likely ... you would be wrong. I am talking about 18# 27% biplanes.

If you would go back and read the thread, we DID discuss the hinges .. .and we DID weigh our options ... and a few of us decided to try the CA hinges since we had not seen any problems with them in the past ... EVEN on our other big gassers. We are not talking about small sport planes ... or little funtanas.

<<<<< See the little picture at the side? That is a 27% Christen Eagle that weighs almost 18 pounds with an Evolution GAS engine ... AND has CA hinges. So ... when I say I have never had a CA hinge fail ... I mean I have never had one fail on a big gas powered biplane. I can't get much more specific than that.

I rest MY case

< Message edited by bonedaddy41 -- 4/28/2007 6:05:07 AM >

_____________________________

Don't knock on Death's door. Instead, ring the bell and run. He hates that.

(in reply to kochj)

Post #: 257

RE: Pitts Pythons in Customs now - 4/28/2007 9:07:13 AM

Unleaded Gaz

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Joined: 2/27/2005
From: Lincoln, UNITED KINGDOM
Status: offline

I echo your thoughts bonedaddy. The parts doner for my Python was a Chip Hyde Vision; this plane had a hard life, I had in excess of 300 fligths before I finally sold it. 87", 50cc, 3d and CA hinges and never a problem (and the rudder was much bigger than that of the Python).

(in reply to bonedaddy41)

Post #: 258

RE: Pitts Pythons in Customs now - 4/30/2007 12:03:28 AM

reyn3545

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Joined: 7/1/2006
From: Alpharetta, GA, USA
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I heard that QQ crashed his this weekend at the SEFF show down here in Georgia... Aparently, there were 3 or 4 unfortunate crashes.. all with folks using Spectrum.

(in reply to Taildragger726)

Post #: 259

RE: Pitts Pythons in Customs now - 4/30/2007 12:26:51 AM

bipeaddict

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From: Montpelier, VA, USA
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He crashed his 44% Python? What a bummer.

(in reply to reyn3545)

Post #: 260

RE: Pitts Pythons in Customs now - 4/30/2007 2:54:36 AM

V1 RO T8

Posts: 54
Joined: 10/7/2004
From: Copley, OH, USA
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Where did you get this info?
I would like to verify, as there recently been 2 crashes in our area, both with 2.4gHz systems.
I am editor for our club's newsletter, and there are many people wondering what is going on with these new radios.
So, if you have a link for the news, that would be great.

(in reply to reyn3545)

Post #: 261

RE: Pitts Pythons in Customs now - 4/30/2007 3:00:06 AM

V1 RO T8

Posts: 54
Joined: 10/7/2004
From: Copley, OH, USA
Status: offline

SEFF?
QQ has a 44% electric?!?!?

(in reply to bipeaddict)

Post #: 262

RE: Pitts Pythons in Customs now - 4/30/2007 3:46:05 AM

reyn3545

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From: Alpharetta, GA, USA
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I heard it from one of our club members who was at the show and saw it. Aparently there was quite a stir about the radios, because when QQ was flying, it was during a lunchtime show, and his was (supposedly) the ONLY radio that was powered on. It was hovering low, and all of a sudden flipped over and crashed. Obviously, it could have been a dozen different things, but all the talk was about the radio.

Yes.. I know what the E stands for... but there are other products/vendors there also.

< Message edited by reyn3545 -- 4/30/2007 3:47:01 AM >

(in reply to V1 RO T8)

Post #: 263

RE: Pitts Pythons in Customs now - 4/30/2007 4:21:50 AM

reyn3545

Posts: 968
Joined: 7/1/2006
From: Alpharetta, GA, USA
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Here's a link to some pics of QQ's Python at the show... it may have e-flite stickers on it, but I'd trust the DA logo on the cowl.

http://www.r-cgroups.com/forums/attachment.php?attachmentid=1285220
You'll have to take the dash out of the link... rcuniverse doesn't like for you to link to a competing site.

I haven't seen any other coverage of this plane crashing, but the guy at our field is generally very reliable. This does confirm that the plane was there and that it flew during the lunch demonstrations... but those facts aren't that key to the story.

(in reply to reyn3545)

Post #: 264