RE: O.S.55AX whos got what with what?

RE: O.S.55AX whos got what with what?
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RE: O.S.55AX whos got what with what? - 4/2/2008 11:51:00 PM

Ed_Moorman

Posts: 3640
Joined: 1/5/2002
From: Shalimar, FL, USA
Status: offline

I have a couple of OS .55s. Great engines. Easy starting, reliable, powerful.

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Ed Moorman, AMA 553, KD4QBM, Revver Bro #156
R/C Report Magazine, Fun Aerobatics Column

(in reply to Gustof Wind)

Post #: 76

RE: O.S.55AX whos got what with what? - 4/9/2008 3:32:53 AM

Adrians flyer

Posts: 64
Joined: 4/9/2007
From: Palm Bay, FL, USA
Status: offline

I've got mine in a Hangar 9 T-34 Mentor running a 10X8 APC prop and even with the bulbous canopy, I can get it clock 104-109 on the radar gun. I've also got it mounted in my NitroPlanes BobCat with an 11X7 APC pusher prop. It has fixed gear so the best I ever got out of it is 94 on the radar gun (but that was with the smaller 10X8 Pusher prop. You can see the radar gun passes posted here:

http://www.rcuvideos.com/item/PKL6R966CS9VTMJS

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It's better to break ground and head into the wind than to break wind and head into the ground.

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Post #: 77

RE: O.S.55AX whos got what with what? - 4/10/2008 3:03:18 AM

millsap

Posts: 35
Joined: 10/4/2007
From: MAYER, AZ, USA
Status: offline

I used one on a uproar 40 used 11-4 prop ran excelant never had a problem and i fly at high elavation 4500 ft

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Post #: 78

RE: O.S.55AX whos got what with what? - 4/11/2008 1:21:44 AM

Augie11

Posts: 170
Joined: 9/25/2005
From: Berthoud, CO, USA
Status: offline

I've just mounted a pair on a TopFlite B-25. Haven't flown it yet but ran them in on 13x6 (MA)props. Put about 1 1/2 gallons through each and they settled in at about 9800 RPM. That's on a 50 degree day, 20% humidity and @ 5200 ft. 15% nitro fuel. Idle @ 1950 and transition was great after setting the low speed needle.....leaned it a bit.

Most pleasing aspect was that they run almost identically +/- 50rpm.

(in reply to millsap)

Post #: 79

RE: O.S.55AX whos got what with what? - 4/13/2008 9:42:50 AM

NorfolkSouthern

Posts: 841
Joined: 7/17/2006
From: Ann Arbor, MI, USA
Status: offline

Got mine on a Tango, like Ed. It can do just about ANYTHING!

NorfolkSouthern

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Post #: 80

RE: O.S.55AX whos got what with what? - 4/16/2008 1:12:16 PM

goph

Posts: 7
Joined: 8/22/2007
From: wangarattavictoria, AUSTRALIA
Status: offline

this is my zlin z50 with a 55 waiting on a pitts muffler. prop size ?? still thinking....any ideas
it fits perfict in side the cowl very happy with is engine..

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Post #: 81

RE: O.S.55AX whos got what with what? - 4/19/2008 1:04:34 PM

Adam G

Posts: 1193
Joined: 10/21/2005
From: MPLS, MN, USA
Status: offline

Great thread. I love my .55ax. I had it on a Carl Goldberg .40 profile Yak for 2 seasons and then plunked it hard into the ground on a low hover shattering a wing. I pulled it off and went looking for a plane to put it in. I wish I would have foound this thread about a month ago. I decided on a Hanger 9 Funtana X 50. I was going to go with the Showtime but decided it might be a little too heavy for the .55. Sounds like you guys are having good results with the .55 showtime combo.

The Funtana is about a pound less than the showtime. I only have 2 flights on it so far, but I am very happy with the way it flies. I am going to reinforce the landing gear before I take it out again. I have the Funtana X 100 with a Saito 1.25 and love that plane. I am hoping for similar performance. So far it seems that I will get what I want.

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I don't know why I smell like glow fuel Chief, I was on an appointment, honest.

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RE: O.S.55AX whos got what with what? - 4/21/2008 1:22:03 AM

RoysterDW

Posts: 318
Joined: 1/25/2007
From: Brisbane, AUSTRALIA
Status: offline

As I read earlier people are using OS "F" plugs on thier 55AX.

Is it safe to try this and has anyone had any reports on how long they have been running them and the results?

[)]

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Post #: 83

RE: O.S.55AX whos got what with what? - 4/21/2008 4:25:31 AM

OK2Fly

Posts: 251
Joined: 8/9/2007
From: Antioch, TN, USA
Status: offline

OS "F" plugs work great. It will not harm the engine, and they give a smooth transition and they hold heat well. Personally, though, just use an A3 it's cheaper, and the results will be similar.

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Anderson

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Post #: 84

RE: O.S.55AX whos got what with what? - 4/21/2008 8:36:33 AM

RoysterDW

Posts: 318
Joined: 1/25/2007
From: Brisbane, AUSTRALIA
Status: offline

quote:

ORIGINAL: OK2Fly

OS "F" plugs work great. It will not harm the engine, and they give a smooth transition and they hold heat well. Personally, though, just use an A3 it's cheaper, and the results will be similar.

Thanks OK2Fly [)]

I have a F plug in the field box so I'll give it a go. Otherwise next time I'm at the HS I'll pick up a couple of A3s

(in reply to OK2Fly)

Post #: 85

RE: O.S.55AX whos got what with what? - 4/25/2008 2:34:31 PM

Gustof Wind

Posts: 35
Joined: 3/30/2008
From: Decorah, IA, USA
Status: offline

Just completed an engine swap in one of my GP Easy Sport modelschanged out an MVVS that's been in there since '00 and in the predecessor of this one, so I felt it was time for a change. Bolt holes and mounting beam spacing were the same, but because of the OS's shorter prop shaft, still had to drill new holes. Also had to carve out a bit of clearance for the throttle arm. A very straight forward swap. OS started on first flip and needed a bit of low end leaning and eventually two clicks of lean on the needle. When the rain quits and the field dries, I'll fly it. Gustof (my other Easy Sport has a ST .61 in itanother great engine)

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RE: O.S.55AX whos got what with what? - 4/25/2008 3:11:13 PM

panzerd18

Posts: 253
Joined: 10/3/2005
From: RomseyVictoria, AUSTRALIA
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I'm looking at putting a 55AX in a H9 Sundowner 50!

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Post #: 87

RE: O.S.55AX whos got what with what? - 5/25/2008 3:59:25 AM

Mustang Fever

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Joined: 11/30/2003
From: Cadillac, MI, USA
Status: offline

I have a 55AX on an Lanier Mariner Mk II, and it's really peppy. I have another one NIB that's going to go on a Mikulasko Arrow when it's finished.

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Bob Hunt

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Post #: 88

RE: O.S.55AX whos got what with what? - 5/25/2008 6:53:24 AM

OK2Fly

Posts: 251
Joined: 8/9/2007
From: Antioch, TN, USA
Status: offline

Put a tuned pipe on it.

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Anderson

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RE: O.S.55AX whos got what with what? - 5/25/2008 6:55:26 AM

plane_nutt93

Posts: 16
Joined: 4/19/2008
From: Florence, MO, USA
Status: offline

For those of you who have the Showtime/ 55 AX combo, I've been curious to know how this engine works with this plane when doing ALL-OUT 3D???

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