YS 110 vs OS 91FX, which one should I pick?

[brett terry]

OK, here is the story.  I just bought a pattern plane on eBay and now
I need a motor for it.  The plane is from China and is a copy of
something (not sure what).  It has a 68" wing span, about 800 in^2
area, and has a pipe tunnel.

I find myself in need of an engine.  My first reflex is to buy an OS
91FX and a pipe, but adding up the total cost and total weight I am in
the YS 1.10 price range and weight range.  Obviously the OS 91/pipe
combo will shift the CG aft a bit, but the YS can allow the tank to be
placed on the CG without the added expense of a pump.

I am looking for input on this project, and know that the best info
will come from this list.  (I fully expect that I would have as many
people on RCU tell me to use a DA50R on it as would give me any
valuable info, but that is another story).

I will try to get some pics up on RCU in the next week and will do a
build thread on it, but I need to decide which engine to order.

I guess I could also go with Bob P's favorite cheapie solution and use
the ST 2300, but that might be a bit much.  This plane is a touch
smaller than an Excelleron.

Any suggestions, prop sizes, experience, etc., will be greatly valued!

Thanks in advance,

Brett
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