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1. 06:30 AM - Re: Czech Tail Cradle (William Geipel)
2. 06:33 AM - Re: Czech Tail Cradle (William Geipel)
3. 07:06 AM - Re: Czech Tail Cradle (Anthony Royal)
Message 1
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| Subject: | Re: Czech Tail Cradle |
It goes behind the belly inspection pan. The main pipe of the tail dolly
has a hole in it that goes directly under the tail skid and keep the
tail from rotating off the dolly.
I need to see my airplane or a pix to tell you exactly where it goes.
> On Mar 20, 2017, at 19:41, Anthony Royal <skyking76t@verizon.net>
wrote:
>
> Hey you guys that have a Czech tail cradle. I need to pick your brain
and gleen some of your knowledge. I bought a Czech L29 tail cradle
couple of months ago. In really good to excellent shape for something
40+ years old. I've never used an original cradle so I have some
questions.
>
> I guess the first question is where do you locate the cradle pads? I
used the hd box rib that is about 8"-12" from the front of the tail
parting line for the front pads and the rear pads located on the heavy
reinforced box rib to the rear of the speed brakes, just forward of the
lower inspection door. Whole thing seemed a little far forward to me. Is
that the correct position or should it be farther toward the rear?
Tail/cradle didn't tip over when the tail came off which was good.
>
> I had to jack the aircraft so the main gear tires were 6-8 or possibly
more inches off the ground to get the front pads under the fuselage.The
jack screws on the cradle were all the way down. I then lowered the
jacks till the front of the tail section was on the front pads. Then
raised the rear pads till they supported the rear of the tail (about 4
threads). The front pads fit the contour of the tail perfectly. The rear
pads, however, fit fine vertically but horizontally, only half of the
pads touched. Nothing is bent on the cradle. Should the rear pads fit
the contour of the tail in the horizontal plane as well as the vertical,
same as the front pads? Should I modify the rear pad bracketry so the
pads fit flush/full contact horizontally?
>
> When one tried to remove the tail by pulling only the cradle handle,
the tail would slide on the cradle pads. Parting line was same gap
distance top and bottom so didn't seem to be in a bind. Had 2 straps
holding the tail to the cradle also. Had the front of the aircraft
supported so the front didn't drop when the tail came off. Finally, had
one person pulling on the cradle handle and two pushing rearward on the
tail so it wouldn't slide on the pads. When the tail finally came off
the airframe, the exhaust pipe was perfectly centered in the tail
section and came off without any problem.
>
> The manual says two people can take the tail off in about 2.5 hours.
Took us quite a bit longer, about double, for me and two other people.
Would anyone have any advise or guidance for the next time? Thanks for
your input.
>
> Tony
Message 2
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| Subject: | Re: Czech Tail Cradle |
By myself, I can get it off in under 1 hour. (30 to 45 minutes)
Jack it up about 4-6 inches and don=99t touch the jacks until the
tail is back on.
Send pix, or send video.
> On Mar 20, 2017, at 19:41, Anthony Royal <skyking76t@verizon.net>
wrote:
>
> Hey you guys that have a Czech tail cradle. I need to pick your brain
and gleen some of your knowledge. I bought a Czech L29 tail cradle
couple of months ago. In really good to excellent shape for something
40+ years old. I've never used an original cradle so I have some
questions.
>
> I guess the first question is where do you locate the cradle pads? I
used the hd box rib that is about 8"-12" from the front of the tail
parting line for the front pads and the rear pads located on the heavy
reinforced box rib to the rear of the speed brakes, just forward of the
lower inspection door. Whole thing seemed a little far forward to me. Is
that the correct position or should it be farther toward the rear?
Tail/cradle didn't tip over when the tail came off which was good.
>
> I had to jack the aircraft so the main gear tires were 6-8 or possibly
more inches off the ground to get the front pads under the fuselage.The
jack screws on the cradle were all the way down. I then lowered the
jacks till the front of the tail section was on the front pads. Then
raised the rear pads till they supported the rear of the tail (about 4
threads). The front pads fit the contour of the tail perfectly. The rear
pads, however, fit fine vertically but horizontally, only half of the
pads touched. Nothing is bent on the cradle. Should the rear pads fit
the contour of the tail in the horizontal plane as well as the vertical,
same as the front pads? Should I modify the rear pad bracketry so the
pads fit flush/full contact horizontally?
>
> When one tried to remove the tail by pulling only the cradle handle,
the tail would slide on the cradle pads. Parting line was same gap
distance top and bottom so didn't seem to be in a bind. Had 2 straps
holding the tail to the cradle also. Had the front of the aircraft
supported so the front didn't drop when the tail came off. Finally, had
one person pulling on the cradle handle and two pushing rearward on the
tail so it wouldn't slide on the pads. When the tail finally came off
the airframe, the exhaust pipe was perfectly centered in the tail
section and came off without any problem.
>
> The manual says two people can take the tail off in about 2.5 hours.
Took us quite a bit longer, about double, for me and two other people.
Would anyone have any advise or guidance for the next time? Thanks for
your input.
>
> Tony
Message 3
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| Subject: | Re: Czech Tail Cradle |
My =C2-tail cradle does not have a support or anyway to attach to the tai
l skid. =C2-When assembling the cradle the connecting tube could not be c
hanged. Barely could get the tube in to line up the one set of holes on eac
h end. Mine has the safety bolts. One bolt in one end and two, horizontal a
nd vertical in the other end. =C2-using the other set of holes would only
lengthen the cradle a few inches. =C2-Sounds like I need to do a little
modification. Would someone be kind enough to send me a photo of their crad
le that has the tail skid securing support?
If it goes behind the belly pan, then I'm way far forward but it is positio
ned on the the box ribs that have the double rivet.. My skid has no way to
secure the tail skid to the cradle.
I'll send some pics. Had to take the plane off the jacks to put both tail a
nd plane into hangar due to bad weather.
Any comment on whether the rear pads should fit the contour of the tail as
opposed to only half the pad touching?
Thanks for all the input.
Tony
On Tuesday, March 21, 2017 9:36 AM, William Geipel <l129bs@gmail.com> w
rote:
By myself, I can get it off in under 1 hour. (30 to 45 minutes)Jack it up
about 4-6 inches and don=99t touch the jacks until the tail is back o
n.Send pix, or send video.
On Mar 20, 2017, at 19:41, Anthony Royal <skyking76t@verizon.net> wrote:
Hey you guys that have a Czech tail cradle. I need to pick your brain and g
leen some of your knowledge. =C2-I bought a Czech L29 tail cradle couple
of months ago. In really good to excellent shape for something 40+ years ol
d. =C2-I've never used an original cradle so I have some questions.
I guess the first question is where do you locate the cradle pads? I used t
he hd box rib that is about 8"-12" from the front of the tail parting line
for the front pads and the rear pads located on the heavy reinforced box ri
b to the rear of the speed brakes, just forward of the lower inspection doo
r. Whole thing seemed a little far forward to me. Is that the correct posit
ion or should it be farther toward the rear? Tail/cradle didn't tip over wh
en the tail came off which was good.
I had to jack the aircraft so the main gear tires were 6-8 or possibly more
inches off the ground to get the front pads under the fuselage.The jack sc
rews on the cradle were all the way down. I then lowered the jacks till the
front of the tail section was on the front pads. Then raised the rear pads
till they supported the rear of the tail (about 4 threads). The front pads
fit the contour of the tail perfectly. The rear pads, however, fit fine ve
rtically but horizontally, only half of the pads touched. Nothing is bent o
n the cradle. =C2-Should the rear pads fit the contour of the tail in the
horizontal plane as well as the vertical, same as the front pads? =C2-Sh
ould I modify the rear pad bracketry so the pads fit flush/full contact hor
izontally? =C2-
When one tried to remove the tail by pulling only the cradle handle, the ta
il would slide on the cradle pads. Parting line was same gap distance top a
nd bottom so didn't seem to be in a bind. Had 2 straps holding the tail to
the cradle also. Had the front of the aircraft supported so the front didn'
t drop when the tail came off. Finally, had one person pulling on the cradl
e handle and two pushing rearward on the tail so it wouldn't slide on the p
ads. When the tail finally came off the airframe, the exhaust pipe was perf
ectly centered in the tail section and came off without any problem.=C2-
The manual says two people can take the tail off in about 2.5 hours. Took u
s quite a bit longer, about double, for me and two other people. Would anyo
ne have any advise or guidance for the next time? Thanks for your input.
Tony
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