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w8n2bup



Joined: 09 Apr 2008
Posts: 20
Location: Kansas City Area

PostPosted: Thu Apr 10, 2008 6:10 am    Post subject: new member questions Reply with quote

Having just signed up last night, I'm not certain that I am posting this question properly, and would appreciate any pointers as to where I should request future inquiries. I am building a 601XL. Finished all of the tail,ailerons,flaps and now working on the right wing. I was looking for any comments about the 1 1/2 inch hole cut out of the rear channel for the aileron rod. The plans call for the center of the hole to be 20 mm up from the flange. The radius is 19 mm. Due to the curve taking up about 2 mm, this would cause the hole to cut down into the curve of the flange about 1 mm. The plant in Mexico, Mo. said that that was OK, but the picture in my photo guide does not appear to show the hole cut down into the flange. Wondered if there is plenty of room to raise this hole up a mil or so or should I cut it into the curve? Thanks. John johnrich(at)everestkc.net

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Rickey B.



Joined: 22 Mar 2008
Posts: 70

PostPosted: Thu Apr 10, 2008 6:24 am    Post subject: new member questions Reply with quote

Having just signed up last night, I'm not certain that I am posting this
question properly, and would appreciate any pointers as to where I
should request future inquiries. I am building a 601XL. Finished all of
the tail,ailerons,flaps and now working on the right wing. I was looking
for any comments about the 1 1/2 inch hole cut out of the rear channel
for the aileron rod. The plans call for the center of the hole to be 20
mm up from the flange. The radius is 19 mm. Due to the curve taking up
about 2 mm, this would cause the hole to cut down into the curve of the
flange about 1 mm. The plant in Mexico, Mo. said that that was OK, but
the picture in my photo guide does not appear to show the hole cut down
into the flange. Wondered if there is plenty of room to raise this hole
up a mil or so or should I cut it into the curve? Thanks. John
johnrich(at)everestkc.net
Go ahead and cut the hole just above the curve of the bend. You
will still have plenty of clearance for the control rod when it is
finished.
Rick
Beckman
601 xl
52EB (res.)
729 MSL
and sinking

www.sharbo.us/thebird


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Terry Phillips



Joined: 11 Jan 2006
Posts: 346
Location: Corvallis, MT

PostPosted: Thu Apr 10, 2008 7:12 am    Post subject: new member questions Reply with quote

John

I was recently asking myself the same question. Andy Elliott recently
speculated on this list whether the hole resulted in a weak spot in the
rear spar. See:

http://members.cox.net/n601ge/drawings/rearspar.html

I looked at the wing of a friend's QBK (see attached photo). The hole (done
by the QBK factory) was right at the bend to the flange. But, it looked to
me that it could have been ~5-mm higher and still had good clearance for
the control rod. That said, the aileron was not yet mounted on the wing,
and it wasn't under load, so I could be wrong about that.

I decided to move my hole up ~5-mm, but when I cut the hole it ended up
only 3-mm higher than plans. Hopefully that will work fine.

Terry
At 07:10 AM 4/10/2008 -0700, you wrote:
Quote:
Having just signed up last night, I'm not certain that I am posting this
question properly, and would appreciate any pointers as to where I should
request future inquiries. I am building a 601XL. Finished all of the
tail,ailerons,flaps and now working on the right wing. I was looking for
any comments about the 1 1/2 inch hole cut out of the rear channel for the
aileron rod. The plans call for the center of the hole to be 20 mm up from
the flange. The radius is 19 mm. Due to the curve taking up about 2 mm,
this would cause the hole to cut down into the curve of the flange about 1
mm. The plant in Mexico, Mo. said that that was OK, but the picture in my
photo guide does not appear to show the hole cut down into the flange.
Wondered if there is plenty of room to raise this hole up a mil or so or
should I cut it into the curve? Thanks. John johnrich(at)everestkc.net


Terry Phillips
ttp44~at~rkymtn.net
Corvallis MT
601XL/Jab 3300 s .. l .. o .. o .. w build kit - Tail, flaps, & ailerons
are done; working on the wings
http://www.mykitlog.com/N47TP/


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Terry Phillips
Corvallis, MT
ttp44<at>rkymtn.net
Zenith 601XL/Jab 3300 slow build kit - Tail feathers done; working on the wings.
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Tim Juhl



Joined: 21 Mar 2006
Posts: 488
Location: "Thumb" of Michigan

PostPosted: Thu Apr 10, 2008 8:55 am    Post subject: Re: new member questions Reply with quote

I believe that the hole as specified in the plans is larger than it need be. I would suggest going a smaller and then clecoing the aileron in place and connecting it to the bellcrank with the pushrod. Run the aileron to it's limits and you will see exactly what you need. You can always make it a little larger once you've seen the fit.

There is plenty of support around this area but why remove more metal than necessary? That said, be sure to allow enough wiggle room so there is no chance of binding in the hole. I've attached a pix of what I found would work for me... your experience may differ.

Tim


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Zodiac XL - Jabiru 3300A
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ter_turn(at)yahoo.com
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PostPosted: Thu Apr 10, 2008 9:24 pm    Post subject: new member questions Reply with quote

As have several other scratch builders, I spliced my rear spars to facilitate bending shorter pieces and installed a doubler to join the halves. .The splice doubler also serves to strengthen the area around the aileron linkage hole. I don't know why you couldn't rivet a doubler of six inches or so to beef up a one piece spar in that area. And no, I'm not an Astronaut, Engineer, Airplane designer, or professional bowler, but I did stay at a Holiday Inn Express one night.

Terry Turnquist
601XL-Plans
Terry Phillips <ttp44(at)rkymtn.net> wrote:[quote] John

I was recently asking myself the same question. Andy Elliott recently
speculated on this list whether the hole resulted in a weak spot in the
rear spar. See:

http://members.cox.net/n601ge/drawings/rearspar.html

I looked at the wing of a friend's QBK (see attached photo). The hole (done
by the QBK factory) was right at the bend to the flange. But, it looked to
me that it could have been ~5-mm higher and still had good clearance for
the control rod. That said, the aileron was not yet mounted on the wing,
and it wasn't under load, so I could be wrong about that.

I decided to move my hole up ~5-mm, but when I cut the hole it ended up
only 3-mm higher than plans. Hopefully that will work fine.

Terry
At 07:10 AM 4/10/2008 -0700, you wrote:
[quote]Having just signed up last night, I'm not certain that I am posting this
question properly, and would appreciate any pointers as to where I should
request future inquiries. I am building a 601XL. Finished all of the
tail,ailerons,flaps and now working on the right wing. I was looking for
any comments about the 1 1/2 inch hole cut out of the rear channel for the
aileron rod. The plans call for the [quote][b]


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