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Engine recommendation for 4*60? - 2/10/2005 11:35 PM   
Dave Wilson


 

Posts: 41
Joined: 5/14/2003
Last Login: 7/24/2008
From: Westminster, MA,
Status: offline 		I'm thinking about getting a 4*60 and would like some engine recommendations. I'd like to use an OS 2-stroke, but the available .61 is at the bottom of the recommended range. I'd rather have something closer to .75.

Is there a recommended alternative to the OS which is closer to .75?

Thanks
Dave

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RE: Engine recommendation for 4*60? - 2/11/2005 12:20 AM   
hookedonrc



Posts: 2387
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Last Login: 5/18/2013
From: Tulsa, OK, USA
Status: online 		I know it is outside of what you mentioned, but I fly mine with an OS91 Surpass 4 stroke. Great engine and great combination with the 4* IMO

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RE: Engine recommendation for 4*60? - 2/11/2005 12:26 AM   
IALINEM


 

Posts: 11
Joined: 1/19/2002
Last Login: 5/16/2013
From: Houston, TX,
Status: offline 		Hey Dave:

I had several 4*60's that flew very well when powered by my Irvine .72 --- also I have seen several powered by OS.91's. Either combination would work well !

Hope this helps:

HAL

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RE: Engine recommendation for 4*60? - 2/11/2005 5:10 AM   
flyg202


 

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From: Pardeeville, WI, USA
Status: offline 		Mine is powered by a Magnum .91 4-stroke and is a great combination for everyday flying.

Our club has had several members build them and all fly great. Personally I think the 4-strokes fly better, especially doing low and slow aerobatics.

The best combination I have seen though is a Saito 1.20 with enlarged control surfaces and the thrust line lowered a little bit. Unlimited vertical and capable of some 3-D.

flyg202

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RE: Engine recommendation for 4*60? - 2/11/2005 5:39 AM   
donkey doctor



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From: Lake Cowichan, BC, CANADA
Status: offline 		Hello; I won't recommend a two stroke, My 4 star 60 has an old OS 90 four stroke, swinging a 15 x 6 APC prop. I haven't flown it much since I knocked teh tail off it, but I think it's 6 years old now and still a great flyer. I have seen other 4 star 60's with OS 91's and Magnum 91's, but I haven't seen any with two strokes.

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RE: Engine recommendation for 4*60? - 2/11/2005 6:57 AM   
trev13


 

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Last Login: 5/12/2013
From: terrace, BC, CANADA
Status: offline 		The four star will fly very well with a 75 size two stroke. Mine with the MDS 78 and a 14 6 prop will go strait up for about 300 feet before falling out (would probably hover but is limited by my flying skills) this is at just above 1/2 throttle.At full power will go until you cant see it anymore.
I've tried a 12 8 prop,too fast caused flutter;and a 13 7 good speed but not the pull of the 14 6.
The general idea is that the MDS is not the most powerful engine in this class so any of the lower priced 75's (Tower,GMS,Super Tiger)should give you comparable performance.
Don't worry about engine wieght,with a 16oz feul tank battery as far ahead as possible it still took 6oz of lead to balance within the recomended cg range.

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RE: Engine recommendation for 4*60? - 2/11/2005 8:11 AM   
Redback



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From: GraftonNew South Wales, AUSTRALIA
Status: offline 		Mine flies pretty good with a Thunder Tiger 61PRO.


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RE: Engine recommendation for 4*60? - 2/11/2005 3:58 PM   
exeter_acres



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From: Johns Creek, GA, USA
Status: offline 		I am going to be another one to vote for the 4 stroke.... It really is worth the extra money in my opinion...

I use the Magnum .91 4 stroke as already mentioned......

GREAT combo.....


It would fly just fine with the 61 2 stroke, probably have plenty of speed and enough power for Sunday flying.....

so it really depends on how you want to fly it......

I am using mine for arobatic training.... I enlarged the rudder, and will be enlarging the elevator next......

The ailierons seem to have enough ooomph for now, but I may enlarge those too........

Wonderful plane!
Oh, I also added a Sullivan tailwheel as the stock tail wheel being supported by the rudder hinges made me nervous

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RE: Engine recommendation for 4*60? - 2/14/2005 9:02 AM   
d_bodary


 

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From: trenton, MI, USA
Status: offline 		I run an O.S. 61Fx on mine with a 12 1/2 inch by 6 prop and it flies very well. Neither to slow or to fast. Replace the factory nylon pushrods for the rudder and elevator with sullivan 4-40 metal pushrods unless you like changing trim every flight. I used a klett 60 size tailwheel assembly on mine along with Bruce Tharpe wheel pants.

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RE: Engine recommendation for 4*60? - 2/14/2005 5:38 PM   
DadsToysBG



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From: Bowling Green, KY, USA
Status: offline 		Take a look at the Saito 81 or the Satio 100 4-stroke. Dennis

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RE: Engine recommendation for 4*60? - 2/14/2005 6:51 PM   
submikester


 

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From: El Segundo, CA, USA
Status: offline 		I have a friend with a saito 100 in his and it flies very well. Really any .91 4 stroke or 60 2 stroke should be fine.

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RE: Engine recommendation for 4*60? - 2/15/2005 6:48 AM   
raideron



Posts: 1693
Joined: 1/12/2004
Last Login: 6/16/2009
From: Fort Mohave, AZ, USA
Status: offline 		I would agree if you want a 2c, that it should be bigger than a 61 IMO...
I also have the Mag 91 4c.. 14x4W prop on my stock 4*60 except for
large servo arms and CF rods and I love it. No weight added for the
CG with my battery pack as far forward under the tank, now it is just
under the wing bolts. She will hover all day, and pull out is OK, K.E.'s
aren't bad I do have to cheat sometimes by leaning the wing over or
turn:-) I'm now working on rolling circles.. Most I got is 3 so far...
The 4* is a very good and capable flyer and is very easy to land...

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< Message edited by raideron -- 2/15/2005 7:01 AM >

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