Today's Message Index:
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1. 03:26 PM - Re: Flap motor - failure, prevention and request (Speedy11@aol.com)
2. 03:59 PM - Re: Re: Flap motor - failure, prevention and request (Matt Dralle)
3. 07:11 PM - Re: Re: Flap motor - failure, prevention and request (scott bilinski)
Message 1
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| Subject: | Re: Flap motor - failure, prevention and request |
Vince,
I've heard of a lot of RV-8 flap motor failures, but never has anyone (that
I'm aware of) investigated the reason for them - and certainly none have
discovered the wiring problems you spoke of.
I am just reaching 20 hours on my RV-8A and I'm going to take your advice
and strengthen the wiring. I took care to secure the flimsy wires when
building, but I'm going to address the issue again.
Thanks for reporting your info.
Stan Sutterfield
Twenty hours on my RV-8 and the flap motor went south. Inspection reveals t
he wire insulation right where the wires enter the motor housing opened up
(both wires) and shorted then broke. I suspect a lot of the intermittent op
eratio problems posted on the list are due to the wires internally breaking
. The cleaning and reinstallation may temporarily cause the wires to reconn
ect thus masking the real problem.
Message 2
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| Subject: | Re: Flap motor - failure, prevention and request |
At 03:15 PM 10/15/2009 Thursday, you wrote:
>Vince,
>I've heard of a lot of RV-8 flap motor failures, but never has anyone (that I'm
aware of) investigated the reason for them - and certainly none have discovered
the wiring problems you spoke of.
>I am just reaching 20 hours on my RV-8A and I'm going to take your advice and
strengthen the wiring. I took care to secure the flimsy wires when building,
but I'm going to address the issue again.
>Thanks for reporting your info.
>Stan Sutterfield
>
>Twenty hours on my RV-8 and the flap motor went south. Inspection reveals t
>he wire insulation right where the wires enter the motor housing opened up
>(both wires) and shorted then broke. I suspect a lot of the intermittent op
>eratio problems posted on the list are due to the wires internally breaking
>. The cleaning and reinstallation may temporarily cause the wires to reconn
>ect thus masking the real problem.
Here are a couple of pictures of how I wired up my RV-8 flap motor. Notice how
the attached red/black wires are secured to the motor with a couple of wire ties
and that there is a generous service loop going into the connector. With
this arrangement, there is never any movement of the wires going to the motor
connector when the flap motor is moving. Seems like it should be pretty long-term
durable...
Matt Dralle
RV-8 #82880 N998RV
http://www.mattsrv8.com
Adding Rubber Gaskets To Baffling...
Message 3
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| Subject: | Re: Flap motor - failure, prevention and request |
The usual reason for failures, at least years ago, was grease from the thre
aded shaft getting into the brushes. This issue is the first I have heard o
f.
-
Scott
=0ARV-8a
--- On Thu, 10/15/09, Speedy11@aol.com <Speedy11@aol.com> wrote:
From: Speedy11@aol.com <Speedy11@aol.com>
Subject: RV8-List: Re: Flap motor - failure, prevention and request
=0A=0A =0A=0A=0AVince,=0AI've heard of a lot of RV-8 flap motor failures, b
ut never has anyone (that =0AI'm aware of) investigated the reason-for th
em-- and certainly none =0Ahave discovered the wiring problems you spoke
of.=0AI am just reaching 20 hours on my RV-8A and I'm going to take your ad
vice =0Aand strengthen the wiring.- I took care to secure the flimsy wire
s when =0Abuilding, but I'm going to address the issue again.=0AThanks for
reporting your info.=0AStan Sutterfield=0A-=0ATwenty =0A hours on my RV-
8 and the flap motor went south. Inspection reveals t
he =0A wire insulation right where the wires enter the motor housing opene
d up =0A
(both wires) and shorted then broke. I suspect a lot of the intermittent
=0A op
eratio problems posted on the list are due to the wires internally =0A bre
aking
. The cleaning and reinstallation may temporarily cause the wires =0A to r
econn
ect thus masking the real problem.=0A=0A-=0A=0A
==
=0A=0A=0A
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