Today's Message Index:
----------------------
1. 08:04 AM - Re: Prop play (Hinde, Frank George (Corvallis))
2. 10:27 AM - Re: Prop play (rueffy@jetthrust.com)
3. 10:33 AM - Re: Prop play (rueffy@jetthrust.com)
4. 11:46 AM - Re: Prop play (Larry McFarland)
Message 1
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--> Stratus-List message posted by: "Hinde, Frank George (Corvallis)" <frank.hinde@hp.com>
Bill,
I have not noticed for and aft movement either. How old are your
bearings/belt?
When it came time to change the belt I just got new bearings from an
industrial bearing supplier...don't remember the cost but it was cheap
enough to just change the bearings 'cus I had already taken it all
apart.
AS I remember the end play of the bearings is set by the locknut set on
the back of the hub. Get a helper to flex the prop tips while you see if
you can feel movement between the locknuts and the aluminium casting.
If you can loosen the locknuts and tighten the preload on the bearing
just enough to make the play go away.
If the 417 hours is on the original bearings personally I would just
change them out as it is not THAT big of a job...Doing the belt is like
75% of the work...At least as far as I remember.
Frank
-----Original Message-----
From: owner-stratus-list-server@matronics.com
[mailto:owner-stratus-list-server@matronics.com] On Behalf Of Kelly
Meiste
Subject: Re: Stratus-List: Prop play
--> Stratus-List message posted by: "Kelly Meiste"
--> <kellymeiste@jcwifi.com>
> I have noticed that if I grab the tip of any of the three warp drive
> prop blades and move them in a for and aft motion, I can feel and see
> probably about a 1/32 or so of movement. Looking closer, it appears
> that this movement is coming from the prop bearings.
> does anyone have this issue? Could any of you move your prop tips for
> and aft next time you get to your aircraft and see if you feel
> anything?
>
> Regards,
> Bill (N812BM - 601HDS - Tri - Stratus (RAM Heads) - Vermont -
417.0
> flight hrs. - 559 landings
> web site -> http://homepages.together.net/~billvt/
++++++++++++++++++++++++++++++++++++++++++++++++++
Hi Bill,
I just ran out to my plane & checked, but all I notice after 120 hours
is the usual 1/4" CW & CCW movement of the prop tips. I feel no front to
back movement.
Keep us posted as to what you find.
Kelly
Message 2
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--> Stratus-List message posted by: rueffy@jetthrust.com
Hi bill,
I commented on this about 2 months ago and made some posts. Im not sure if you
can dig them out of the archives. I have exactly the same issue on my stratus
EA81 with 72" three blade prop. I initially thought it was a single blade but
I found its all blades and I too have a very very small amount of movement that
I have traced to the prop bearings. Seems to be only present when the bearings
are cold though. My engine is approaching 300 hours and I was going to change
the bearings at 300hours anyway. I have continued flying in the meantime and I
am watching it closely but I haven't seen any noticable degredation since I
first noticed it.
P.S. I have a pair of murphy 1500 straight floats for sale for $6000 USD.
Brett Rueff
Vanacouver Canada
Quoting Bill Morelli <billvt@together.net>:
> --> Stratus-List message posted by: "Bill Morelli" <billvt@together.net>
>
> Fellow Stratusites,
>
> I have noticed that if I grab the tip of any of the three warp drive prop
> blades and move them in a for and aft motion, I can feel and see probably
> about a 1/32 or so of movement. Looking closer, it appears that this
> movement is coming from the prop bearings.
>
> I put a scale down by the prop bearing center race and made the above
> movement. There is movement there of probably less than .005" - Obviously
> that slop is amplified at the blade tips.
>
> Looking at the prop bearings that I pulled out two years ago, the inner
> races of both bearings also had this slight slop.
>
> This movement at the prop tips may have always been there but I had not
> noticed it until now (417 flight hours) and it has me a bit concerned.
>
> Anyway, does anyone have this issue? Could any of you move your prop tips
> for and aft next time you get to your aircraft and see if you feel anything?
>
> Regards,
> Bill (N812BM - 601HDS - Tri - Stratus (RAM Heads) - Vermont - 417.0
> flight hrs. - 559 landings
> web site -> http://homepages.together.net/~billvt/
>
>
>
>
>
>
>
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http://www.jetthrust.com
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Message 3
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--> Stratus-List message posted by: rueffy@jetthrust.com
I think Gary Wolf is floating around this forum. If so can we talk more about
what you have mentioned on the airsoob forum about stress reversals or prop
reversals, whichever it was for inflight adjustable props on the belt drive
stratus EA81. Its something I have not looked into but would like to learn
more about. Can you explain the phenomona a little more - is it only
adjustable props or fixed as well?
Thanks
Brett Rueff
Vancouver
Quoting Bill Morelli <billvt@together.net>:
> --> Stratus-List message posted by: "Bill Morelli" <billvt@together.net>
>
> Fellow Stratusites,
>
> I have noticed that if I grab the tip of any of the three warp drive prop
> blades and move them in a for and aft motion, I can feel and see probably
> about a 1/32 or so of movement. Looking closer, it appears that this
> movement is coming from the prop bearings.
>
> I put a scale down by the prop bearing center race and made the above
> movement. There is movement there of probably less than .005" - Obviously
> that slop is amplified at the blade tips.
>
> Looking at the prop bearings that I pulled out two years ago, the inner
> races of both bearings also had this slight slop.
>
> This movement at the prop tips may have always been there but I had not
> noticed it until now (417 flight hours) and it has me a bit concerned.
>
> Anyway, does anyone have this issue? Could any of you move your prop tips
> for and aft next time you get to your aircraft and see if you feel anything?
>
> Regards,
> Bill (N812BM - 601HDS - Tri - Stratus (RAM Heads) - Vermont - 417.0
> flight hrs. - 559 landings
> web site -> http://homepages.together.net/~billvt/
>
>
>
>
>
>
>
Pilots!-For all your aviation resources visit
Jet Thrust.com- The Pilot Network
http://www.jetthrust.com
Please report IMMEDIATELY any abuse/spam or scams of our webmail system to
the webmaster of this website at the following address: webmaster@jetthrust.com
Message 4
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--> Stratus-List message posted by: Larry McFarland <larrymc@qconline.com>
Bill,
The free movement you feel would probably not be available to the
running bearings because
as the grease slings about the rotating parts, it becomes a film which
would close the gaps
under pressure of rotation. I'd worry if the bearings had any rattle or
galled feel to them
when rotating, but doubt you have a serious problem. It might be cause
to remove the bearings
and look at them closely to feel any roughness in them once, but that
would be it for me.
I've no perceptible motion fore or aft in mine but the housing does get
overly warm to the touch
and that may be because of the takeup.
Larry McFarland
Kelly Meiste wrote:
>--> Stratus-List message posted by: "Kelly Meiste" <kellymeiste@jcwifi.com>
>
>
>
>>I have noticed that if I grab the tip of any of the three warp drive prop
>>blades and move them in a for and aft motion, I can feel and see probably
>>about a 1/32 or so of movement. Looking closer, it appears that this
>>movement is coming from the prop bearings.
>>does anyone have this issue? Could any of you move your prop tips
>>for and aft next time you get to your aircraft and see if you feel
>>anything?
>>
>>Regards,
>>Bill (N812BM - 601HDS - Tri - Stratus (RAM Heads) - Vermont - 417.0
>>flight hrs. - 559 landings
>>web site -> http://homepages.together.net/~billvt/
>>
>>
>
>
>
>
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