Anyone with a .90 in a Ultimate 120?  
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All Forums >> RC Airplanes >> ARF or RTF >> NitroModels Support >> Anyone with a .90 in a Ultimate 120?
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Anyone with a .90 in a Ultimate 120? - 10/12/2007 12:06:33 AM   
ForktailedDevil38



Posts: 68
Joined: 5/5/2003
From: Smithville, OH, USA
Status: offline 		I just bought an Ultimate 120 and was wondering if anyone has flown one with a .90 in it. I'm trying to decide what power plant I want to put in it. I'm considering either a Super Tigre G-90 or an SK 1.10. I flew a buddies Goldberg Ultimate before, which I would consider a similar aircraft, and it seemed to go around just fine. Any help is appreciated.
       Post #: 1

RE: Anyone with a .90 in a Ultimate 120? - 11/10/2007 8:03:37 PM   
Knife/edge


 

Posts: 3
Joined: 7/30/2007
From: York, , UNITED KINGDOM
Status: offline 		I Look forward To the answer to your request,
I was about to ask the same question. My motor is a Yamada 91 AC. and like you I would also like to know if that motor would fly the ultimate 120 just as a sport plane

(in reply to ForktailedDevil38)
       Post #: 2

RE: Anyone with a .90 in a Ultimate 120? - 11/12/2007 4:50:39 AM   
opjose



Posts: 5774
Joined: 11/26/2005
From: Poolesville, MD, USA
Status: offline 		I fly my 1.20 with an O.S. Surpass III 1.20.

It does pretty well with this combination.

The Surpass 1.20 is rated to put out 2.1 bHp under ideal conditions.

The G-90 is rated at 2.5 bHp.

Go with the largest recommended prop on the G-90 and you'll be good, with slightly better power than a 1.20 FS.


There will be TONS of room in the cowl with this engine...

BTW: If you haven't purchased the SuperTiger yet, check out the GMS 1.20 engine, 3.3BHP @ 13,000 RPM!



< Message edited by opjose -- 11/12/2007 4:54:05 AM >

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

(in reply to Knife/edge)
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RE: Anyone with a .90 in a Ultimate 120? - 11/12/2007 4:53:20 AM   
opjose



Posts: 5774
Joined: 11/26/2005
From: Poolesville, MD, USA
Status: offline


.

< Message edited by opjose -- 11/12/2007 4:54:47 AM >

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

(in reply to opjose)
       Post #: 4

RE: Anyone with a .90 in a Ultimate 120? - 1/7/2008 1:57:43 AM   
RR24


 

Posts: 79
Joined: 12/25/2006
From: Liberal, KS, USA
Status: offline 		Has anyone tried the GMS 120, that is what i was going to put into mine, just wondering how this engine would work with this plane?

(in reply to opjose)
       Post #: 5

RE: Anyone with a .90 in a Ultimate 120? - 1/7/2008 2:22:37 AM   
opjose



Posts: 5774
Joined: 11/26/2005
From: Poolesville, MD, USA
Status: offline 		I have the GMS 1.20 on a Falcon 1.20.

The GMS should haul the Biplane around with authority, though you'll need to move the batteries forward to get the C.G. right as the 2C engine is relatively light.

One note on the GMS 1.20.

I find that after the engine is broken in, if you tune it the way you do most engines, the mid range will always seem to be "off".

I ended up setting my LS needle a little LEANER that I would normally set it using standard testing, etc. ( about 1/4 turn ) and the HS needle about 1/4 richer. This fixes the transition and still lets the engine run within the correct temperature range.

You would have no problem side mounting the GMS 1.20 in the Biplane, though I prefer the inverted mounts for looks...

All of my Biplanes have inverted engines as do most of my planes.



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

(in reply to RR24)
       Post #: 6

RE: Anyone with a .90 in a Ultimate 120? - 1/7/2008 3:08:31 AM   
RR24


 

Posts: 79
Joined: 12/25/2006
From: Liberal, KS, USA
Status: offline 		the only muffler i have found requires a side mount, do you know of a muffler that will let this engine be mounted inverted?

(in reply to opjose)
       Post #: 7

RE: Anyone with a .90 in a Ultimate 120? - 1/13/2008 11:16:23 PM   
RR24


 

Posts: 79
Joined: 12/25/2006
From: Liberal, KS, USA
Status: offline 		I have the yellow ultimate 120, my question is, what temp range should a guy use on this polester covering, a lower range or a higher range, got to get the wrinkles out you know!!!

Thanks

(in reply to RR24)
       Post #: 8

RE: Anyone with a .90 in a Ultimate 120? - 1/14/2008 5:57:49 PM   
opjose



Posts: 5774
Joined: 11/26/2005
From: Poolesville, MD, USA
Status: offline 		Set your iron about 160, then work your way up until you see a barely perceptible discoloration whenever you put the iron on the covering.

This is the temp that you want.



_____________________________

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

(in reply to RR24)
       Post #: 9

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