Good modern 60 side exhaust for Dirty Birdy?  
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All Forums >> RC Airplanes >> Pattern Flying >> Classic Pattern Flying >> Good modern 60 side exhaust for Dirty Birdy?
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Good modern 60 side exhaust for Dirty Birdy? - 5/12/2008 2:53:18 AM   
nitrowatt


 

Posts: 19
Joined: 10/24/2004
From: Albuquerque, NM, USA
Status: offline 		Been flying this superb bird for around 10 years using OS 60FX piped...on 3rd engine (one being replaced under OS's awsome warranty) ...now maybe needing a fourth. Mac quiet piped turns 11X9 M.A. prop well (tried many props and while not the best vertical gives the best speed)...But I'm sure there are better engines out there. I'd like to stay side exhaust since I'm setup that way now, sideway's mount with the pipe under the fuse with a Hyde mount. Love the plane...but have gone through a few bearings with the OS's usually running 15 or 20% nitro. Plane's been mothballed for 2 years and just got everything worked out (cleaned out) for another season...but I don't think the engines going to last much longer. Thanks for suggestions! -Will
       Post #: 1

RE: Good modern 60 side exhaust for Dirty Birdy? - 5/12/2008 7:46:14 AM   
OUHOZER


 

Posts: 95
Joined: 4/24/2003
From: Santa Ana, CA, USA
Status: offline 		Hi Will,
Put a Tower 75 in it.
The Tower has the same bolt pattern as O S,
so You will not have to redo the mount.
Run's great on 10% Nitro.
They sell for about $95.00 from Tower Hobby's.
If your a member of their super saver club,
You get free shipping and double the standard warranty.
Just My $.02,
H.

(in reply to nitrowatt)
       Post #: 2

RE: Good modern 60 side exhaust for Dirty Birdy? - 5/12/2008 8:07:26 PM   
okelly


 

Posts: 84
Joined: 1/24/2005
From: Givatayim, ISRAEL
Status: offline 		I'd recomend one of two:
1) The AXE ROSSI 60 5P. Look for a seller called rossienginesusa in the auction site (can't write the name, but yo get it). You get the engine with a TUNED SILENCER for 200$
2) A TT 60 Pro. use the carb from your FX on it, and you have a great engine.

BTW: If you don't mind the displacement, just use a .90. The modern ones have the same or LESS weight as the 60s.

(in reply to OUHOZER)
       Post #: 3

RE: Good modern 60 side exhaust for Dirty Birdy? - 5/12/2008 11:39:39 PM   
captb



Posts: 159
Joined: 12/20/2004
From: Sun City, AZ, USA
Status: offline 		OS 75 AX


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(in reply to okelly)
       Post #: 4

RE: Good modern 60 side exhaust for Dirty Birdy? - 5/13/2008 1:50:33 AM   
nitrowatt


 

Posts: 19
Joined: 10/24/2004
From: Albuquerque, NM, USA
Status: offline 		Thanks guys! Just read the review of the 75AX and I'm sold. Wondering what it would do with a 12X11 or 12X12?. Probably haul!!! I'd have to lengthen the main gear for any more diameter (taildragger)...but no big deal. I'd heard of the 75 but thought it was ringed...gonna search for "ABL" not familiar with that. Thanks again.

(in reply to captb)
       Post #: 5

RE: Good modern 60 side exhaust for Dirty Birdy? - 5/13/2008 6:15:37 AM   
okelly


 

Posts: 84
Joined: 1/24/2005
From: Givatayim, ISRAEL
Status: offline 		Don't mess with your gear, just use a 3 blade prop. How about some pics of that dirty birdy?

(in reply to nitrowatt)
       Post #: 6

RE: Good modern 60 side exhaust for Dirty Birdy? - 5/13/2008 11:31:49 AM   
dhal22


 

Posts: 877
Joined: 8/28/2006
From: Roswell, GA, USA
Status: offline 		i was going to mention the axerossi. but i don't know enough to recommend it. it does appear to fit the bill of a 'modern' 60.

david

(in reply to okelly)
       Post #: 7

RE: Good modern 60 side exhaust for Dirty Birdy? - 5/13/2008 11:40:13 AM   
Ed Cregger



Posts: 7435
Joined: 1/31/2002
From: Ringgold, GA, USA
Status: offline 		There is not enough difference between the power output of a .61 and a .75 to go up in prop diameter. You'll just get a couple of hundred more rpm than you are getting now running the same prop that you had on your .60.


Ed Cregger


_____________________________

Artisan

"Flying models since the Fifties - I'll get the hang of this yet!!!"

(in reply to nitrowatt)
       Post #: 8

RE: Good modern 60 side exhaust for Dirty Birdy? - 5/14/2008 2:55:49 AM   
nitrowatt


 

Posts: 19
Joined: 10/24/2004
From: Albuquerque, NM, USA
Status: offline 		Ed, if it would turn a 12X10 or 12X>10 at the same rpm as I get with an 11X10 I'd be happy. The extra inch diameter would even improve the vertical. I like going for pitch speed since the plane is pretty slippery and I've found that at the slight expense of vertical (still will go vert out of sight after takeoff, just a bit slower)...once it gets going level and on the pipe the engine unloads she really boogies!...IMO the beauty of turnaround pattern. We all love those 120mph 6ft high slow or point rolls! Thanks for the advice Sir! Will.

BTW okelly I've tried 3 blades and wasn't that impressed although I didn't thoroughly go through very many combos. I'll post picks as soon as I can.

(in reply to Ed Cregger)
       Post #: 9

RE: Good modern 60 side exhaust for Dirty Birdy? - 5/14/2008 3:38:06 AM   
nitrowatt


 

Posts: 19
Joined: 10/24/2004
From: Albuquerque, NM, USA
Status: offline 		Just threw the cowl and prop on for a few pics!

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(in reply to nitrowatt)
       Post #: 10

RE: Good modern 60 side exhaust for Dirty Birdy? - 5/14/2008 3:58:32 AM   
nitrowatt


 

Posts: 19
Joined: 10/24/2004
From: Albuquerque, NM, USA
Status: offline 		Just looked at the Rossi's...WOW! A bit pricey but 3yr warranty...and BIG power claims. Definitely more pricey than the 75AX (still with a great 2 year warranty). Is it worth it guys? My plane is dear to me since it's so unusual these days to find anything on the field built from a box of sticks (you guys know what I'm talking about) so in respect of the plane (and build time) I know I shouldn't "skimp"...but would I see a real advantage? Thanks again! -Will

(in reply to nitrowatt)
       Post #: 11

RE: Good modern 60 side exhaust for Dirty Birdy? - 5/14/2008 1:27:48 PM   
okelly


 

Posts: 84
Joined: 1/24/2005
From: Givatayim, ISRAEL
Status: offline 		Hey Will,

Thanks for the pics. I just love Joe Bridi's designs.

As for the Rossi, I would take a Rossi over the AX any day. Rossi engines are the Ferraris of model airplanes, great quality and brute power.

(in reply to nitrowatt)
       Post #: 12

RE: Good modern 60 side exhaust for Dirty Birdy? - 5/14/2008 1:31:51 PM   
windcosmic


 

Posts: 46
Joined: 2/1/2008
From: Vicenza, ITALY
Status: offline 		go to planethobby and look for a Novarossi .60 side exhaust

(in reply to okelly)
       Post #: 13

RE: Good modern 60 side exhaust for Dirty Birdy? - 5/14/2008 3:15:07 PM   
okelly


 

Posts: 84
Joined: 1/24/2005
From: Givatayim, ISRAEL
Status: offline 		NovaRossi is a different branch of the family and a separate company. I hear they make very good car engines. Haven't seen one in action but I bet they are good.

(in reply to windcosmic)
       Post #: 14

RE: Good modern 60 side exhaust for Dirty Birdy? - 5/14/2008 4:16:13 PM   
flywilly


 

Posts: 828
Joined: 2/3/2002
From: glen allen, VA,
Status: offline 		M 2 cents: go with the OS 75AX. I have a brand new AXE Rossi rear exhaust 61 that I will be 'playing' with later this summer. Rossi engines are very well made, no question!!, but nothing beats an OS for out-of-the box ease of operation and it should be a drop in replacement for the 61FX (I read the reviews, but can't remember). You can get a side exhaust Rossi on ebay as the US distributor regularly places them on auction there. I think there is a side exhaust with tuned muffler listed right now for $199.
I've heard that OS will stop making the .61FX sometime soon.
The displacement difference between the 75AX and the 61FX is almost 25% which means the 75 with a stock muffler will be at least as powerful as the piped 61FX. I've run the OS 1.20AX extensively (about 200 flights over the past year) and really liked the engine. I never liked the remote needle set-up on the FX series of engines.
Good luck and enjoy your DB - one of my favorite airplanes!
-Will

(in reply to okelly)