<DIV>Brett, </DIV>
<DIV> </DIV>
<DIV>If your final target weight is under 8lbs go with the OS 91 FX on a pipe. Over 8lbs go with the YS 110. I suspect you will be well over 8lbs. So it looks like the YS . . . </DIV>
<DIV> </DIV>
<DIV>I have a scratch built Desire 60, which I use as a trainer to save wear and tear on my 2M planes, it weighs 7.5lbs. with an OS 91 and flies the Advanced schedule just fine. Itīs about 2 years old (300+ flights) and the OS hasīnt missed a beat. Great little engine IMHO.</DIV>
<DIV> </DIV>
<DIV>Remember the OS takes 15% nitro, The YS 110 preferes 25%.</DIV>
<DIV> </DIV>
<DIV>My $0.02</DIV>
<DIV> </DIV>
<DIV>Rodney Tanner </DIV>
<DIV>NSRCA # 2906 <BR><BR><B><I>brett terry <brett.terry@gmail.com></I></B> wrote:</DIV>
<BLOCKQUOTE class=replbq style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">OK, here is the story. I just bought a pattern plane on eBay and now<BR>I need a motor for it. The plane is from China and is a copy of<BR>something (not sure what). It has a 68" wing span, about 800 in^2<BR>area, and has a pipe tunnel.<BR><BR>I find myself in need of an engine. My first reflex is to buy an OS<BR>91FX and a pipe, but adding up the total cost and total weight I am in<BR>the YS 1.10 price range and weight range. Obviously the OS 91/pipe<BR>combo will shift the CG aft a bit, but the YS can allow the tank to be<BR>placed on the CG without the added expense of a pump.<BR><BR>I am looking for input on this project, and know that the best info<BR>will come from this list. (I fully expect that I would have as many<BR>people on RCU tell me to use a DA50R on it as would give me any<BR>valuable info, but that is another story).<BR><BR>I will try to get some pics up on RCU in the
next week and will do a<BR>build thread on it, but I need to decide which engine to order.<BR><BR>I guess I could also go with Bob P's favorite cheapie solution and use<BR>the ST 2300, but that might be a bit much. This plane is a touch<BR>smaller than an Excelleron.<BR><BR>Any suggestions, prop sizes, experience, etc., will be greatly valued!<BR><BR>Thanks in advance,<BR><BR>Brett<BR>================================================To access the email archives for this list, go to<BR>http://lists.f3a.us/pipermail/nsrca-discussion/<BR>To be removed from this list, go to http://www.nsrca.org/discussionA.htm<BR>and follow the instructions.<BR><BR>List members email returned for mailbox full will be removed from the list.<BR><BR></BLOCKQUOTE>