ys91 or OS120 in a P51 ARF
07-07-2010 | 11:21 AM
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From: Van Nuys,
CA
ys91 or OS120 in a P51 ARF
HI I was looking for some advice.
I am building a 60 Size P51 ARF and I am trying to determine the best engine to put in it. To be honest I am really new to the use and tuning of 4strokes but those are my choices for this plane.
A
YS91Z
and a
OS120FS surpass
I want a screamer so am thinking the 120 but is it too big it seems like this would be more for a giant size not a 60 but if it works I think it would be a screamer.
The YS I believe is a something that will work and may be more appropriate but I want to have the unusual. In our field we have several P51 running OS110 and it is night and day compared to the 91 I would like to put the 120 in this plane and add smoke and make this a really nice plane.
The questions are what will I have to watch out for
I know I will probably have to add weight to the tail to make sure the CG is correct but is there anything else.
As I said I am new to the use of 4 strokes so I may easily overlook something basic.
Please let me know your opinions
Thanks
I am building a 60 Size P51 ARF and I am trying to determine the best engine to put in it. To be honest I am really new to the use and tuning of 4strokes but those are my choices for this plane.
A
YS91Z
and a
OS120FS surpass
I want a screamer so am thinking the 120 but is it too big it seems like this would be more for a giant size not a 60 but if it works I think it would be a screamer.
The YS I believe is a something that will work and may be more appropriate but I want to have the unusual. In our field we have several P51 running OS110 and it is night and day compared to the 91 I would like to put the 120 in this plane and add smoke and make this a really nice plane.
The questions are what will I have to watch out for
I know I will probably have to add weight to the tail to make sure the CG is correct but is there anything else.
As I said I am new to the use of 4 strokes so I may easily overlook something basic.
Please let me know your opinions
Thanks
07-07-2010 | 11:44 AM
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From: Poolesville, MD
RE: ys91 or OS120 in a P51 ARF
Frankly I would go with the YS.
The YS is a supercharged engine, while the O.S. is not.
As such your YS will produce about the same power as the O.S., but be lighter and smaller.
Make sure you get help tuning the engine since this is your first four stroker.
Also I find it easier to break an engine in with a heavier/mass prop, such as an APC.
The YS is a supercharged engine, while the O.S. is not.
As such your YS will produce about the same power as the O.S., but be lighter and smaller.
Make sure you get help tuning the engine since this is your first four stroker.
Also I find it easier to break an engine in with a heavier/mass prop, such as an APC.
