Today's Message Index:
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1. 06:43 AM - Re: Rear Prop Gov. Questions (Gary Casey)
2. 09:40 AM - Re: Re: Rear Prop Gov. Questions (Hopperdhh@aol.com)
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| Subject: | Re: Rear Prop Gov. Questions |
--> Engines-List message posted by: Gary Casey <glcasey@adelphia.net>
I'm afraid I can't answer the questions you ask, but can add that
there is a "gotcha" on the rear governor. Between the governor and
the engine there is a thin steel plate that is very important.
Sometimes, because it is stuck to the gasket on each side, it gets
unknowingly discarded. The gasket will probably seal without the
plate, but possibly - and this has happened many times - the gasket
will sooner or later blow out with the resulting total oil loss. I'm
not sure if this plate is only in the "D" dual mag engine or in all
the rear-mounted governors. Another important thing is to make sure
that the steel line (make sure it is steel, not aluminum) to the
front of the engine is supported in the proper locations. There is
an old AD note that covers this.
Gary Casey
>
> I am thinking of putting an IO-360-A1A engine in my RV-7A. It has
> been
> flying with an IO-360-A1D6 which has a front mounted governor.
>
> Could someone on the list please tell me approximately what the
> thickness of
> the rear mounted prop governor adapter pad is on an IO-360-A1A? I
> have an
> old one that measures about 2 1/16 inches. Is there a thinner one
> available?
>
> The dimension I need is from the accessory case to the prop
> governor itself.
>
> Also, will the McCauley governor off the left front of my IO-360-
> A1D6 work
> on the rear of the -A1A? As far as I can tell there is about 3
> percent
> difference in the drive ratio -- 0.866 vs 0.895. I would assume
> that the governor
>
> could be adjusted for this difference. Is there some other reason
> why it
> won't work?
>
> Thanks,
> Dan Hopper
> RV-7A
Message 2
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| Subject: | Re: Rear Prop Gov. Questions |
Gary,
Thanks for the information. I have printed it out and will make sure I have
the plate if I should have it.
do not archive
Thanks,
Dan Hopper
RV-7A
In a message dated 7/29/2006 9:44:36 A.M. Eastern Daylight Time,
glcasey@adelphia.net writes:
--> Engines-List message posted by: Gary Casey <glcasey@adelphia.net>
I'm afraid I can't answer the questions you ask, but can add that
there is a "gotcha" on the rear governor. Between the governor and
the engine there is a thin steel plate that is very important.
Sometimes, because it is stuck to the gasket on each side, it gets
unknowingly discarded. The gasket will probably seal without the
plate, but possibly - and this has happened many times - the gasket
will sooner or later blow out with the resulting total oil loss. I'm
not sure if this plate is only in the "D" dual mag engine or in all
the rear-mounted governors. Another important thing is to make sure
that the steel line (make sure it is steel, not aluminum) to the
front of the engine is supported in the proper locations. There is
an old AD note that covers this.
Gary Casey
>
> I am thinking of putting an IO-360-A1A engine in my RV-7A. It has
> been
> flying with an IO-360-A1D6 which has a front mounted governor.
>
> Could someone on the list please tell me approximately what the
> thickness of
> the rear mounted prop governor adapter pad is on an IO-360-A1A? I
> have an
> old one that measures about 2 1/16 inches. Is there a thinner one
> available?
>
> The dimension I need is from the accessory case to the prop
> governor itself.
>
> Also, will the McCauley governor off the left front of my IO-360-
> A1D6 work
> on the rear of the -A1A? As far as I can tell there is about 3
> percent
> difference in the drive ratio -- 0.866 vs 0.895. I would assume
> that the governor
>
> could be adjusted for this difference. Is there some other reason
> why it
> won't work?
>
> Thanks,
> Dan Hopper
> RV-7A
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