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Ultra sport 60 X Best engines - 12/14/2006 8:29:11 AM   
cesio


 

Posts: 3
Joined: 11/15/2006
From: rio, BRAZIL
Status: offline 		I´d like to know opinion about best engine options for a Great Planes Ultra Sport 60. I´m particularly interested on Os 91FX or Saito 125, but not shure about results. Thanks for any help.
       Post #: 1

RE: Ultra sport 60 X Best engines - 12/14/2006 10:36:22 AM   
davo580


 

Posts: 292
Joined: 12/12/2006
From: Perth Australiaaustralia, AUSTRALIA
Status: offline 		my mate has got 60 and has a os91fx in it . it is about 11 years old now and stills fly's great. I am just about to finish my ultra sport 1000 and it has a os 160fx in it

(in reply to cesio)
       Post #: 2

RE: Ultra sport 60 X Best engines - 12/14/2006 3:15:08 PM   
XTOL



Posts: 533
Joined: 10/15/2004
From: Galesburg, IL, USA
Status: online 		I scratchbuilt my Ultra Sport 60 from the RCM plans and it
is powered by a ringed OS 61 SF long stroke. It swings an
APC 12 X 7 at about 11600 RPM and it weighs in at a little
over 8 pounds.

This is just about a perfect match for this plane. And this
is the motor that was used in the original prototype.
Any modern 61 should produce more power and be lighter in weight.

Any 90 size four stroke would probably work just as well. This is
not a plane that needs to be overpowered.

Mike Hammer

_____________________________

Visit my Ultra Sport page! http://tesla-2.dyndns.org/~mhammer/us60/

(in reply to davo580)
       Post #: 3

RE: Ultra sport 60 X Best engines - 12/14/2006 3:20:03 PM   
RCKen



Posts: 15191
Joined: 7/10/2002
From: Lawton, OK, USA
Status: offline
quote:

ORIGINAL: XTOL

...... This is not a plane that needs to be overpowered.


Absolutely. I've flown both of my US60's with an OS 61 FX, and this engine is plenty for this plane.

Ken

_____________________________

The take off is optional, but the landing is MANDATORY!!
AMA # 712539 www.gettingairborne.com
Moderator- Beginner''s, Sport Flying, Off-Topic, & AMA Discussions
RCU Community Moderator

(in reply to XTOL)
       Post #: 4

RE: Ultra sport 60 X Best engines - 12/14/2006 3:22:06 PM   
daveopam



Posts: 4432
Joined: 10/10/2002
From: ELK CITY, OK, USA
Status: offline 		I ran a Super Tigre 75 on mine. It was a great combo. I flew it for 5 years as my everyday flyer.
David

_____________________________

"Choose your shirt and shoes by the color. Choose your friends by their character." unknown

(in reply to RCKen)
       Post #: 5

RE: Ultra sport 60 X Best engines - 12/15/2006 3:24:54 AM   
buzzingb


 

Posts: 1514
Joined: 9/4/2002
From: Bruce, MS, USA
Status: offline 		I never had the US60 but the 75 is one sweet engine. It will pull at least 1 inch larger prop than the 61 and runs just as well.

_____________________________

Buzz

(in reply to daveopam)
       Post #: 6

RE: Ultra sport 60 X Best engines - 12/21/2006 6:02:35 PM   
cesio


 

Posts: 3
Joined: 11/15/2006
From: rio, BRAZIL
Status: offline 		Thanks for opinion. I thing i´ll be happy with OS 61FX without inferiority complex

(in reply to buzzingb)
       Post #: 7

RE: Ultra sport 60 X Best engines - 12/21/2006 10:55:42 PM   
kamakazie frank



Posts: 146
Joined: 6/27/2002
From: Turnersville, NJ, USA
Status: offline 		Cesio:

Find yourself a good used YS60 FIRE with a Hatori header, tuned pipe, 11 x 7 3/4 or 11 x 8 prop, MK retracts and your on your way!!!!!!!!!!!!!!!!!!!!!!!!!!!!!


kf

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< Message edited by kamakazie frank -- 12/21/2006 11:00:53 PM >

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(in reply to cesio)
       Post #: 8

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