Classic RC Pattern Flying Discuss here all pre 1996 RC Pattern Flying in this forum.

Dirty Birdy ARF

Reply
Old 09-21-2012, 07:41 AM
  #651
ChiefK
 
ChiefK's Avatar
 
Join Date: May 2008
Location: Foxfire Village, NC
Posts: 759
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Dirty Birdy ARF

These were mine (many years ago).

ChiefK
Attached Thumbnails
Click image for larger version

Name:	Ig13273.jpg
Views:	36
Size:	285.4 KB
ID:	1803497   Click image for larger version

Name:	Yt61553.jpg
Views:	37
Size:	103.9 KB
ID:	1803498  
ChiefK is offline  
Reply With Quote
Old 09-24-2012, 01:11 PM
  #652
mjduet
 
Join Date: Jun 2003
Location: austin, TX
Posts: 46
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Dirty Birdy ARF

In reference to the comments by BEM and DPHILL2, I too wish that some of the ARF's were offered as a RTC/F(ready to cover/finish) product.

Morris
mjduet is offline  
Reply With Quote
Old 10-06-2012, 07:51 PM
  #653
kochj
 
Join Date: Dec 2005
Location: Victoria, MN
Posts: 3,923
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Dirty Birdy ARF


Quote:
ORIGINAL: ChiefK

I'm not hearing any discussion about engine rules changes for the 2-stroke variety. There's probably more 4-stroke flyers in SPA (especially in the ''Expert'' group) than 2-stroke flyers. In either case, O.S. is not the only option available. In fact, the Senior Expert class was won by a DB/OS .61 combo a couple of weeks ago.

ChiefK

SPA reminds me of the engine legal limit that was used in the current pattern comps that used to have 2=stroke limits and 4-stroke limits.....in F3A....
Someone over there actually had a brain cell working and decided that there isn't any need for any limits now, because weight is the litmiting factor....

Funny thing is, that in order for a IC engine to compete with the Electric motors run in them now, it would need a 50cc gas or greater...

Learning is to man, as leaves and branches is to a tree, you can't do w/o it.... I hope SPA can figure that one out... .61 is and a .65 is not leagal? Really!....
They figured out another way to contribute to the dumping of glow engines, for favor of Electric motors.....
Great job SPA!....


kochj is offline  
Reply With Quote
Old 10-06-2012, 08:38 PM
  #654
LS171Malibu
 
Join Date: Apr 2003
Location: Azle, TX
Posts: 483
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Dirty Birdy ARF


Quote:
ORIGINAL: kochj


Quote:
ORIGINAL: ChiefK

I'm not hearing any discussion about engine rules changes for the 2-stroke variety. There's probably more 4-stroke flyers in SPA (especially in the ''Expert'' group) than 2-stroke flyers. In either case, O.S. is not the only option available. In fact, the Senior Expert class was won by a DB/OS .61 combo a couple of weeks ago.

ChiefK

SPA reminds me of the engine legal limit that was used in the current pattern comps that used to have 2=stroke limits and 4-stroke limits.....in F3A....
Someone over there actually had a brain cell working and decided that there isn't any need for any limits now, because weight is the litmiting factor....

Funny thing is, that in order for a IC engine to compete with the Electric motors run in them now, it would need a 50cc gas or greater...

Learning is to man, as leaves and branches is to a tree, you can't do w/o it.... I hope SPA can figure that one out... .61 is and a .65 is not leagal? Really!....
They figured out another way to contribute to the dumping of glow engines, for favor of Electric motors.....
Great job SPA!....


The displacement limits have been raised to 0.65 for 2 stroke and 0.95 for 4 stroke. You can see more here:

http://www.rcuniverse.com/forum/m_11224952/tm.htm
LS171Malibu is offline  
Reply With Quote
Old 10-25-2012, 10:07 AM
  #655
hrrcflyer
 
Join Date: Apr 2006
Location: Carrollton
Posts: 1,696
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Dirty Birdy ARF

Hey Fella's,

I'm looking for a little assistance for a good friend of mine. I just sold him my new unbuilt Dirty Birdy ARF............[&o] He is planning on using his NIB Webra Speed 61 with a tuned pipe. This is his first plane with a pipe and I remember someone here in the Classic Pattern Forum posting some information on setting up motors on tuned pipes. If I remember correctly, I think Chuck (Atlanta 60) posted the information. Does anyone have the information? If not, can anybody give me a good starting point for the length of the pipe?

TIA for the help with this......

David
hrrcflyer is offline  
Reply With Quote
Old 10-27-2012, 05:51 PM
  #656
woodie
 
woodie's Avatar
 
Join Date: Jun 2002
Location: Placerville, CA
Posts: 1,142
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Dirty Birdy ARF

I won a DB ARF in a raffle recently. Yahoo!!!! Have been going thru it checking stuff and deciding how to set it up. I know people are generally happy with the DB ARF so am glad it is available.

Unfortunatley, My DB has some issues, some I can fix, some I can't/won't. First I wish we could get the DB ARF as a ARC rather than an ARF. The Monokote was horribly wrinkled and some of it you can't get the wrinkles out, particularly around the tips. One tip has a dent in it like it was dropped wing tip first on some rounded object. Hinging is a joke, one elev and both wings would need to be re-hinged. One aileron is almost 1/16" off center in the center hinges. Aileron is actually sitting higher than the trailing edge in front of it. Top of canopy is flattened, the flat spot is about 3/4" wide and doesn't seem to want to come out even with heat. And best of all, both wings are twisted about half a degree, unfortunately in opposite directions.

My plan at this point is to see if I can get the wings replaced, the current wings would have to be stripped and cut open to remove the twist which is something I don't want to do.

Sorry for this negative report and I am glad most people are happy with their DBs, just the luck of the draw. This one must have been made on a Monday or a Friday..... ;-)

Woodie
woodie is offline  
Reply With Quote
Old 10-28-2012, 03:47 AM
  #657
J Strong
 
Join Date: Aug 2005
Location: Prattville, AL
Posts: 172
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Dirty Birdy ARF

I never had to shrink my covering yet and it still looks good, but I'm not looking that close .
Your right on with the hinges, it appears both of mine are hinged slightly high from center, but for and ARF it flys wonderful. I'm powered by a Nova Rossi, that's taching 14,400 static with an APC 11x7 prop and doing in the 90 mph range, easy, and flys wonderful. It ain't no pro built kit, but for China assembly it ain't bad.
Woodie, sounds like I'd like to fly one of your birds, you pay lots of attention to detail, and sure your plane will fly better than mine when your all finished. For what it is, a 60 size, $299 plane, its a bargain, and for the price you paid, even better.
You'd appreciate the quality of the Oxai models from 3D unlimited. Do a search and check out real pricing, $4800 planes, and you get what you pay for .
Jamie
In Bama
J Strong is offline  
Reply With Quote
Old 10-28-2012, 06:20 AM
  #658
woodie
 
woodie's Avatar
 
Join Date: Jun 2002
Location: Placerville, CA
Posts: 1,142
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Dirty Birdy ARF

Jamie, I agree with you, it is pretty good for a $299 ARF, and I was very lucky to pick it up for a few $$$ spent on raffle tickets. Yes, I am 'very' picky about my plane setups so these little things are probably more of an issue to me than to some people, guess it comes from 40+ years of flying pattern planes. Setups, straightness and covering are pretty important to me. Some of my friends fly the Oxai planes you mention, and guess what, they are not perfect either... ;-) Some Oxai issue areas are somewhat surprising for a plane that cost that much money.

I still have my first Dirty Birdy I built way back when. It is the glass fuse version, not built up fuse. Was fortunate enough to buy it back from the friend I sold it to many years ago. It's 30+ years old now, still in flying condition tho I wouldn't trust the original Kraft servos that are in it.....

Sitting side by side, the two DBs look alike, but there are subtle differences, some for manufacturing ease, some for helping the modeler. Removable cowl, plug in stabs, etc. Canopy shape is a little different so I don't understand why they changed that. But all in all, my new DB will probably take to the air after a little 'enhancing' and it will be electric, not glo even tho I left my original DB as a glo setup.

Woodie
woodie is offline  
Reply With Quote
Old 10-28-2012, 06:39 AM
  #659
J Strong
 
Join Date: Aug 2005
Location: Prattville, AL
Posts: 172
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Dirty Birdy ARF

Let me know what your using for power and the watts your pulling?
The Dirty Birdy flys better than any yet for its size. It's getting to be a popular choice for us here in the SPA.
Check us out at
Senior pattern.com
I flew for Phil Kraft back in the day, and your right, use the servos for a paper weight .
Jamie
J Strong is offline  
Reply With Quote
Old 10-28-2012, 08:36 AM
  #660
woodie
 
woodie's Avatar
 
Join Date: Jun 2002
Location: Placerville, CA
Posts: 1,142
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Dirty Birdy ARF

Plan on using a 5S 5000mah pack, the Scorpion 4020-8 (approx 850kV) and a 11x7 or 11x8 prop. Same setup a friend is using in his DB, I think he is pulling about 65A. That equates to approx 1200w and the plane is fast, more vertical than necessary and can fly the complete CPA Masters sequence with good power. The Scorpion 4020-8 was specifically wound to give enough rpm on a 5S pack to be able to run the same props we used to use on the 60 size planes and not have to use longer gear to provide prop clearance for longer props turning a lower rpm.

Woodie
woodie is offline  
Reply With Quote
Old 10-28-2012, 08:50 AM
  #661
J Strong
 
Join Date: Aug 2005
Location: Prattville, AL
Posts: 172
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Dirty Birdy ARF

That's not a bad setup, but not comparable to my Caylpso with my Nova Rossi 60 on the nose . IMO you need to go 6S to get the duration your need for really good power thru the sequence. I'll be testing my first 2 meter El thru the winter, and I'm pulling 3100 watts on a 10 cell at 77 AMPs, that's proving OK power, at least bench testing. It ain't no YS 170, that's for sure, but electric is pretty neat, till it gets to hot, burns out an ESC, and or catches fire . Electric is all I mess with now with most all my other planes, but still stay glow with my SPA, CPA, and AMA birds.
J Strong is offline  
Reply With Quote
Old 10-28-2012, 09:25 AM
  #662
woodie
 
woodie's Avatar
 
Join Date: Jun 2002
Location: Placerville, CA
Posts: 1,142
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Dirty Birdy ARF

Jamie, all my 2M pattern planes are e-powered, have been for 5 years now. I use about 2900-3000 watts max during a F3A sequence and about 3500-3900 mah depending on the wind.

Yes, 6S would give more rpm, not necessarily more duration. We chose 5S for convenience since our 2M planes typically use 2 5S packs in series so splitting them to use in 60 sized planes is 'convenient'. Sure a Rossi will spin the prop a bit faster (we are getting about 13K) with the 11x7 APC but the DB doesn't need the speed to fly well and it actually seems to have better vertical (more constant speed) than the glo versions. Bottom line, the Scorpion is purpose built to be a drop in e-power replacement for 60 sized motors. Will work with 5S or 6S, but be careful with prop load on 6S, the amps can climb quickly.

Woodie
woodie is offline  
Reply With Quote
Old 10-28-2012, 09:33 AM
  #663
J Strong
 
Join Date: Aug 2005
Location: Prattville, AL
Posts: 172
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Dirty Birdy ARF

Thats neat, and the only way I do it if I were competing in two meter stuff already.
I bought the plane J Shulman flew this year at the preliems at the NATs so know the 3100 is a good number for 11 lbs, even if its not 3100 at the end of the flight . Thats my on drawback to pattern El stuff, but sure it could be adjusted to with time.
Did ya fly at this years NATs? The last NATs I flew was in 83, then just quit pattern, but returned in 2000, and having the time of my life.
What 2 meter birds you fly ?
Jamie
J Strong is offline  
Reply With Quote
Old 11-15-2012, 07:46 AM
  #664
JWQ500RC
 
Join Date: Dec 2002
Location: Visalia, CA
Posts: 278
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Dirty Birdy ARF

Just ordered mine today. Should be here 11/20 can't wait. Trying to decide if I should goold school and use my KB61 PDP with tuned pipe, or my OS65AX. I'm leaning toward old school no retracts, and my K&B with a tuned pipe.
JWQ500RC is offline  
Reply With Quote
Old 11-15-2012, 07:57 AM
  #665
stuntflyr
 
stuntflyr's Avatar
 
Join Date: Oct 2007
Location: Tucson, Arizona
Posts: 1,881
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Dirty Birdy ARF

A buddy has a 65 AX on a pipe in his Vertigo (kinda like a P-8) and it just plain hauls the mail. It smokes the YS P-8 in the area no problem.
Chris...
stuntflyr is offline  
Reply With Quote
Old 11-20-2012, 06:54 AM
  #666
Alan W
 
Join Date: Jan 2003
Location: New York, NY,
Posts: 53
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Dirty Birdy ARF


Quote:
ORIGINAL: woodie

Plan on using a 5S 5000mah pack, the Scorpion 4020-8 (approx 850kV) and a 11x7 or 11x8 prop. Same setup a friend is using in his DB, I think he is pulling about 65A. That equates to approx 1200w and the plane is fast, more vertical than necessary and can fly the complete CPA Masters sequence with good power. The Scorpion 4020-8 was specifically wound to give enough rpm on a 5S pack to be able to run the same props we used to use on the 60 size planes and not have to use longer gear to provide prop clearance for longer props turning a lower rpm.

Woodie
Woodie - did you ever get this setup flying in the DB60 ?

If so, thoughts .. comments .. impressions

... inquiring thumbs want to know
Alan W is offline  
Reply With Quote
Old 11-20-2012, 07:13 AM
  #667
woodie
 
woodie's Avatar
 
Join Date: Jun 2002
Location: Placerville, CA
Posts: 1,142
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Dirty Birdy ARF

Alan, no I haven't finished the DB ARF yet although I have flown other peoples Classic Pattern planes with this motor setup. A Phoenix 7 and a Super Kaos. Both perform well using a 11x7 prop. You can fly the entire Classic Pattern Masters sequence with good power on a 5S 5000mah lipo if you are careful in the turn arounds. I think the Kaos weighs around 6.5 pounds, don't know what the Phoenix weighs.

Don
woodie is offline  
Reply With Quote
Old 11-24-2012, 05:00 AM
  #668
Wingspam
 
Join Date: Dec 2005
Location: fort worth, TX
Posts: 465
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Dirty Birdy ARF

Greetings all

I am on page 24 of the thread and have not seen or just misssed it, but has anyone tried a 55ax in this plane?
I have a 55ax and a jett 50 laying around and hope on of these might work.
Let me know your thoughts

Thanks
Wingspam is offline  
Reply With Quote
Old 11-24-2012, 05:20 AM
  #669
ChiefK
 
ChiefK's Avatar
 
Join Date: May 2008
Location: Foxfire Village, NC
Posts: 759
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Dirty Birdy ARF

Saw that power setup in a Phoenix 6 and it worked great. Should be even better in the DB!

ChiefK
ChiefK is offline  
Reply With Quote
Old 11-24-2012, 07:54 AM
  #670
stuntflyr
 
stuntflyr's Avatar
 
Join Date: Oct 2007
Location: Tucson, Arizona
Posts: 1,881
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Dirty Birdy ARF

I have a 55AX in a Kaos and it hauls. It'd help keep the weight down on a DB and makes plenty of power, especially on a pipe.
Chris...
stuntflyr is offline  
Reply With Quote
Old 11-24-2012, 08:18 AM
  #671
J Strong
 
Join Date: Aug 2005
Location: Prattville, AL
Posts: 172
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Dirty Birdy ARF

I run a Nova Rossi 60 with a Rossi muffler, taching out 14,200 static, and 14,800 with a pipe. Never enough power, he he he
The DB is the bet ARF yet for SPA, and even BPA/CPA competition. I started my pattern beginnings back in the good old days of the mid seventies, and just love the old stuff, but enjoy 2 meter competition as well.
My year normally has 21-23 contest to attend, and just hate it that I can't make our first of the year AMA contest in Apopka ( Tangerines) next weekend . Aging parents and Parent In Law has got me staying close to home now, but all a part of life, if ya live long enough.
J Strong is offline  
Reply With Quote
Old 11-25-2012, 04:29 AM
  #672
rogera
 
Join Date: Mar 2005
Location: Dubai, UNITED ARAB EMIRATES
Posts: 34
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Dirty Birdy ARF

Test flew mine a couple of weeks ago with a brand new OS61 FX and it really moves. The engine is still running in and getting better and better, what a plane. Have fitted the e-flite electric retracts (60 - 120 size) and they work well. First few flights I landed fast and this last flying session (flight numbers 3 to 5) was able to slow it down and still grease it in. Looking forward to many more flights and I will post some photos when I get around to taking some (hopefully in the next couple of weeks as have other planes I need to fly as well). Safe landings, Roger.
rogera is offline  
Reply With Quote
Old 11-26-2012, 06:19 AM
  #673
computermonkey
 
Join Date: Sep 2004
Location: Oklahoma area
Posts: 569
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Dirty Birdy ARF

Looking forward to the pictures.
computermonkey is online now  
Reply With Quote
Old 02-03-2013, 03:25 AM
  #674
rogera
 
Join Date: Mar 2005
Location: Dubai, UNITED ARAB EMIRATES
Posts: 34
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Dirty Birdy ARF

At last, a couple of photos of the DB 60 in our pit area. Really enjoy this plane and have about a dozen flights on it so far. Landings are so smooth and looks great performing routines from the 70's pattern era.

Will try to get some flying photos soon.

Safe landings


Attached Thumbnails
Click image for larger version

Name:	Sq45819.jpg
Views:	41
Size:	86.9 KB
ID:	1847401   Click image for larger version

Name:	Lj22862.jpg
Views:	59
Size:	93.4 KB
ID:	1847402  
rogera is offline  
Reply With Quote
Old 02-04-2013, 10:00 AM
  #675
jon bruml
 
Join Date: Jun 2008
Location: hayward , CA
Posts: 61
Gallery
My Gallery
Models
My Models
Ratings
My Feedback
Default RE: Dirty Birdy ARF

I am looking for the ideal pipe length and prop combo for the OS .65 max ax
any thoughts?

Thanks
Jon
jon bruml is offline  
Reply With Quote
Reply


Thread Tools
Search this Thread
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -8. The time now is 09:58 AM.