Today's Message Index:
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1. 12:15 PM - Re: LycomingEngines-List Digest: 1 Msgs - 11/15/07 (capmrp@cfu.net)
2. 01:53 PM - Re: Re: LycomingEngines-List Digest: 1 Msgs - 11/15/07 (Ralph E. Capen)
3. 02:55 PM - Re: Re: LycomingEngines-List Digest: 1 Msgs - 11/15/07 (manuel weber)
4. 04:05 PM - Re: Re: LycomingEngines-List Digest: 1 Msgs - 11/15/07 (frequent flyer)
Message 1
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| Subject: | Re: LycomingEngines-List Digest: 1 Msgs - 11/15/07 |
Gents,
I am thinking of changing out the bushings in the prop flange on the
crank to allow clocking the c/s 2-blade prop to cut down vibrations at
cruise power. I have the procedure but since I have never swapped out
the bushings, I'm wondering if anyone out there can give insight.
1. Are the bushings oversize fit?
2. Are the sides of the bushings textured in any way in order to grip
the flange tighter ie: make it more difficult to remove?
3. Since the "special tool" for bushing removal/insall costs $1800
does anyone know of where I can borrow one or of other tools that will
work just as well?
Any insight would be appreciated.
Thanks.
Mike
capmrp@cfu.net
Message 2
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| Subject: | Re: LycomingEngines-List Digest: 1 Msgs - 11/15/07 |
I have actually seen a website where someone documented this process.
Don't remember the details but it was fairly recent.
Check some of the Matronics RV list archives......improve the value of your donation........
-----Original Message-----
>From: capmrp@cfu.net
>Sent: Nov 16, 2007 2:08 PM
>To: lycomingengines-list@matronics.com
>Subject: LycomingEngines-List: Re: LycomingEngines-List Digest: 1 Msgs - 11/15/07
>
>
>Gents,
>
>I am thinking of changing out the bushings in the prop flange on the
>crank to allow clocking the c/s 2-blade prop to cut down vibrations at
>cruise power. I have the procedure but since I have never swapped out
>the bushings, I'm wondering if anyone out there can give insight.
>
>1. Are the bushings oversize fit?
>2. Are the sides of the bushings textured in any way in order to grip
>the flange tighter ie: make it more difficult to remove?
>3. Since the "special tool" for bushing removal/insall costs $1800
>does anyone know of where I can borrow one or of other tools that will
>work just as well?
>
>Any insight would be appreciated.
>
>Thanks.
>Mike
>capmrp@cfu.net
>
>
Message 3
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| Subject: | Re: LycomingEngines-List Digest: 1 Msgs - 11/15/07 |
The bushings are an "interference fit"
The bushings are not "textured", they are held in place by the above interference
fit.
I have removed the bushings very easily by using a piece of tubing that just
fits over the flange of the bushing on the back side of the crank flange, use
a bolt, nut and a washer placed on the front side of the bushing where the washer
is slightly smaller than the O.D. of the bushing, and simply using two wrenches
to squeeze the nut bolt combination together will force the bushing from
the crankflange.
Installation is done by using a bolt that fits the threads in the I.D. of the
bushing and placing an appropriate piece of tubing on the front side of the crankflange,
insert the bolt throught the tubing, crankflange, and screw into the
bushing placed on the back side of the crankflange, pull the bushing into place
by turning the bolt. Lightly oil all surfaces to keep from galling. The
press fit is not real tight so it should go in easily.
Please be careful of what you may consider "proper clocking" of the prop to the
crank. Use the information from the prop manufacturer if available, or call
the prop manufacturer.
Manuel Weber
A&P
capmrp@cfu.net wrote:
Gents,
I am thinking of changing out the bushings in the prop flange on the
crank to allow clocking the c/s 2-blade prop to cut down vibrations at
cruise power. I have the procedure but since I have never swapped out
the bushings, I'm wondering if anyone out there can give insight.
1. Are the bushings oversize fit?
2. Are the sides of the bushings textured in any way in order to grip
the flange tighter ie: make it more difficult to remove?
3. Since the "special tool" for bushing removal/insall costs $1800
does anyone know of where I can borrow one or of other tools that will
work just as well?
Any insight would be appreciated.
Thanks.
Mike
capmrp@cfu.net
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Message 4
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| Subject: | Re: LycomingEngines-List Digest: 1 Msgs - 11/15/07 |
It's pretty easy. Put a socket on the back sid that the bushing will fit through
and use a c-clamp to push the bushing out. Hope this helps.
Jack
capmrp@cfu.net wrote:
Gents,
I am thinking of changing out the bushings in the prop flange on the
crank to allow clocking the c/s 2-blade prop to cut down vibrations at
cruise power. I have the procedure but since I have never swapped out
the bushings, I'm wondering if anyone out there can give insight.
1. Are the bushings oversize fit?
2. Are the sides of the bushings textured in any way in order to grip
the flange tighter ie: make it more difficult to remove?
3. Since the "special tool" for bushing removal/insall costs $1800
does anyone know of where I can borrow one or of other tools that will
work just as well?
Any insight would be appreciated.
Thanks.
Mike
capmrp@cfu.net
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