Today's Message Index:
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1. 11:58 AM - Here's a good one (Gary Vogt)
2. 01:04 PM - Re: Here's a good one (grumpyparts)
3. 06:43 PM - Re: Re: Here's a good one (Gary Vogt)
Message 1
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| Subject: | Here's a good one |
I'm working on an AG5B. -It's serial number 36 so it's a one-of-a-kind ai
rplane.=0A=0AThis plane was owned by a guy who did a LOT of formation flyin
g. -When I got the plane, it had not any ANY routine maintenance in a ver
y long time. -But, that's another story. -Back to formation flying.=0A
=0AWhen I first flew this plane, I thought the controls had a lot of play i
n them; particularly on the pilots side. -I got under the panel and watch
ed the U-joints. -Hmm. -Seems like a lot of play to me. -Maybe it's j
ust me. -So, after installing a new airbox [which increases the manifold
pressure by up to an inch Hg (never less than .8 inches Hg increase)] I gav
e the plane back to its owner to fly for a while. -=0A=0AThe owner also n
oted there was a lot of play. -So, I ordered new U-Joint. -Garner warne
d me they'd be difficult to drill, and they were. -=0A=0AAfter installing
the pilot's side first, I moved the yoke back and forth. -The play was s
till there, though not as much; I would say 1/4 inch at the yoke. -I reac
hed up to the sprocket for the control chain and there was play between the
shaft the u-joint is on and the sprocket. -The only thing that could be
is the pin that holds the sprocket to the shaft. -It must be crowded out.
-Now, there's a new one. -=0A=0AI disassembled the shaft assembly and
it wouldn't come out. -I used a drift into the shaft to knock it out. -
It was really stuck. -The roller bearings to the shaft were caked with dr
ied grease, the bearings were anything but smooth. -The shaft has a flat
spot in it.-=0A=0AI have a complete control assembly from a 79 Tiger. -
I took it apart and after 32 years, the grease was still good and the beari
ngs smooth. -=0A=0ABob S., what grease was used in 79? -what grease was
used in the AG5B?=0A=0AJust a heads up. -If you do a lot of formation fl
ying, watch for play in the yokes.
Message 2
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| Subject: | Re: Here's a good one |
When considering buying some pre-drilled universal joints from True Flight, which
BTW they didn't have, Loyd passed on this little tip bit.
If this is an early AG (before 2003) the insert in the end of the control shaft
was solid and would not compress around the universal shaft which allowed slack
in the joint. This insert should be modified by cutting a 0.130 inch slot
in the bushing. This will allow the shaft and insert to tighten around the end
of the universal which will eliminate all of the free-play in the joint. Many
have thought the universal was worn when what they actually had was slack in
the shaft joint. I would modify the insert, reassemble the control shaft then
recheck the amount of play in the universal. Unless the boot on the universal
is torn, chances are that the universal is good.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=360866#360866
Message 3
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| Subject: | Re: Here's a good one |
Here is the sprocket and shaft. -No entries in the log books for this sha
ft. -It looks like it had been assembled at the factory with the end of t
he shaft ground in order to fix an obviously bad pin installation. -I did
n't remove the pin. -I did try to wedge the pin to tighten the sprocket.
-I wouldn't trust it. -=0A=0ABoth universal joints had some play compar
ed to new ones. -The biggest problem was the loose sprocket.=0A=0A=0A____
____________________________=0A From: grumpyparts <i.r.m@btinternet.com>=0A
PM=0ASubject: TeamGrumman-List: Re: Here's a good one=0A =0A--> TeamGrumma
n-List message posted by: "grumpyparts" <i.r.m@btinternet.com>=0A=0AWhen co
nsidering buying some pre-drilled universal joints from True Flight, which
BTW they didn't have, Loyd passed on this little tip bit.=0A=0AIf this is a
n early AG (before 2003) the insert in the end of the control shaft was sol
id and would not compress around the universal shaft which allowed slack in
the joint.- This insert should be modified by cutting a 0.130 inch slot
in the bushing.- This will allow the shaft and insert to tighten around t
he end of the universal which will eliminate all of the free-play in the jo
int.- Many have thought the universal was worn when what they actually ha
d was slack in the shaft joint.- I would modify the insert, reassemble th
e control shaft then recheck the amount of play in the universal.- Unless
the boot on the universal is torn, chances are that the universal is good.
=0A=0A=0A=0A=0ARead this topic online here:=0A=0Ahttp://forums.matronics.co
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