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<DIV><SPAN class=064471205-02062003><FONT face=verdana>Iv'e always used the 814A
with the 140L....dang, perhaps I have been using the wrong one all
along....duuuhh</FONT></SPAN></DIV>
<DIV><SPAN class=064471205-02062003>I doubt that TT would make an adapter that
required the prop to be reamed so I think I would call them and see
what they say.</SPAN></DIV>
<DIV><SPAN class=064471205-02062003>Previously, I never knew the correct TT part
number and the 814A is what Central sent out....hmmm....</SPAN></DIV>
<DIV><SPAN class=064471205-02062003></SPAN> </DIV>
<DIV><SPAN class=064471205-02062003><FONT face=verdana>Remember, the prop hub
thickness must be considered too.</FONT></SPAN></DIV>
<DIV><SPAN class=064471205-02062003>The APC 16x12 hub is a little over 3/4
thick.</SPAN></DIV>
<DIV><SPAN class=064471205-02062003>The APC 15.5x12 hub is about 11/16
thick...</SPAN></DIV>
<DIV><SPAN class=064471205-02062003></SPAN> </DIV>
<DIV><SPAN class=064471205-02062003><FONT face=verdana>If the adaptor nut tapped
face contacts the inside of the spinner bolt hole, the cone flange MAY not be
inserted into the backplate slot even though the spinner bolt is
tight.</FONT></SPAN></DIV>
<DIV><SPAN class=064471205-02062003>On the other hand, if the adapter nut tapped
face does NOT contact the inside of the spinner bolt hole, the cone will distort
the backplate as the bolt is tightened.</SPAN></DIV>
<DIV><SPAN class=064471205-02062003></SPAN> </DIV>
<DIV><SPAN class=064471205-02062003><FONT face=verdana>My problems have never
been the length of the engine shaft, only the prop hub thickness and adaptor nut
length.</FONT></SPAN></DIV>
<DIV><SPAN class=064471205-02062003></SPAN> </DIV>
<DIV><SPAN class=064471205-02062003><FONT face=verdana>Dave</FONT></SPAN></DIV>
<BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
<DIV></DIV>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left><FONT
face=Tahoma>-----Original Message-----<BR><B>From:</B>
discussion-request@nsrca.org [mailto:discussion-request@nsrca.org] <B>On
Behalf Of </B>Ihncheol Park<BR><B>Sent:</B> Sunday, June 01, 2003 9:26
PM<BR><B>To:</B> discussion@nsrca.org<BR><B>Subject:</B> RE: YS 140L tuning
questions<BR><BR></FONT></DIV>
<DIV><FONT face=verdana>
<DIV><SPAN class=118453003-02062003><FONT face=verdana><A
href="http://www.truturn.com/cgi-bin/store/agora.cgi?exact_match=on&p_id=tt0814a&ppinc=adapt">http://www.truturn.com/cgi-bin/store/agora.cgi?exact_match=on&p_id=tt0814a&ppinc=adapt</A></FONT></SPAN></DIV>
<DIV><SPAN class=118453003-02062003><FONT
face=verdana></FONT></SPAN> </DIV>
<DIV><SPAN class=118453003-02062003><FONT face=verdana><A
href="http://www.truturn.com/cgi-bin/store/agora.cgi?exact_match=on&p_id=tt0813a&ppinc=adapt">http://www.truturn.com/cgi-bin/store/agora.cgi?exact_match=on&p_id=tt0813a&ppinc=adapt</A></FONT></SPAN></DIV>
<DIV><SPAN class=118453003-02062003><FONT
face=verdana></FONT></SPAN> </DIV>
<DIV><SPAN class=118453003-02062003><FONT face=verdana>The 814A is for
63/91/120s because of the short end nut.</FONT></SPAN></DIV>
<DIV><SPAN class=118453003-02062003>The 813A is for 140s with long shaft
although it shows as short shaft. The outside nut is pretty long
and the inside one looks to be through the prop. So,
it looks like I need to bore the prop with larger OD of 813A
nut. (probably 11mm)</SPAN></DIV>
<DIV><SPAN class=118453003-02062003></SPAN> </DIV>
<DIV><SPAN class=118453003-02062003><FONT face=verdana>Am I
right?</FONT></SPAN></DIV>
<DIV><SPAN class=118453003-02062003></SPAN> </DIV>
<DIV><SPAN class=118453003-02062003><FONT
face=verdana>Ihncheol</FONT></SPAN></DIV></FONT></DIV>
<BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
<DIV class=OutlookMessageHeader dir=ltr align=left><FONT
face=Tahoma>-----Original Message-----<BR><B>From:</B>
discussion-request@nsrca.org [mailto:discussion-request@nsrca.org]<B>On
Behalf Of </B>David Harmon<BR><B>Sent:</B> Sunday, June 01, 2003 8:28
PM<BR><B>To:</B> discussion@nsrca.org<BR><B>Subject:</B> RE: YS 140L tuning
questions<BR><BR></FONT></DIV>
<DIV><SPAN class=287481903-02062003><FONT face=verdana>Those numbers are TT
adapter nuts. The APC props have different hub thickness depending on what
size prop you are using. Some TT spinners will not fully engage the
backplate if the prop hub is too thick....other TT spinners when tightened
will distort the spinner backplate.</FONT></SPAN></DIV>
<DIV><SPAN class=287481903-02062003>You can add washer shims in front of the
adapter nut to prevent the distorting and shorten the adaptor nut if the
spinner will not go on all the way. It's kinda goofy but that seems to be
the way it is. I asked a few other flyers about this problem a few years
back but they didn't seem to know what I was talking about.</SPAN></DIV>
<DIV><SPAN class=287481903-02062003>TT may make a short and long adaptor
nut....but I couldn't find it on their website.</SPAN></DIV>
<DIV><SPAN class=287481903-02062003></SPAN> </DIV>
<DIV><SPAN class=287481903-02062003><FONT
face=verdana>Dave</FONT></SPAN></DIV>
<BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
<DIV></DIV>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left><FONT
face=Tahoma>-----Original Message-----<BR><B>From:</B>
discussion-request@nsrca.org [mailto:discussion-request@nsrca.org] <B>On
Behalf Of </B>jim ivey<BR><B>Sent:</B> Sunday, June 01, 2003 8:00
PM<BR><B>To:</B> discussion<BR><B>Subject:</B> Re: YS 140L tuning
questions<BR><BR></FONT></DIV>
<DIV> lhncheol</DIV>
<DIV>You may have the wrong threaded adapter nut. Check that out. I'm not
familiar with 813A, or 814A. What are these numbers. Been a while since I
bought adapters.</DIV>
<DIV> My 140l's run at full throttle about 1 1/4 to 1 1/3 needle
opening. That has a lot to do with nitro content. I run 30% heli fuel. I'm
guessing 2 turns out is a good starting place.</DIV>
<DIV> </DIV>
<DIV>Jim Ivey</DIV>
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