REFLECTOR: crankshaft seal
Jim & Sharon Beck
jsbeck at charter.net
Tue Sep 4 09:54:04 CDT 2007
Thanks Scott & Ron
After I take my prop off so I can see what I've got I will just replace what is there and not worry about this retainer. Hope that is the leak I haven't been able to find for a year. I can get everything clean and the oil takes about 2 hour to find its way outside the cowl and after that its dirty every time I fly. Cant seem to see the seal area without taking the MT off.
thanks again for the insight.
Jim
----- Original Message -----
From: Ron Brown
To: Velocity Aircraft Owners and Builders list
Sent: Tuesday, September 04, 2007 6:59 AM
Subject: Re: REFLECTOR: crankshaft seal
Jim,
The recollection that I have is that this seal can blow out if the crankcase vent is is plugged - for example, iced up from flying in freezing conditions and not having an "ice hole" in the vent line inside the cowl to relieve the built up crankcase pressure.
I used to have an ice hole in my vent line - but it seemed to be leaking oil mist onto the fire wall. I did away with it and vowed not to fly in icing conditions. Flying in ice can ruin your day and cause more problems than a frozen vent line. I live in the sunny south and I can definitely avoid flying in ice. If you are still worried about icing the vent line, you could route it so that it attaches/connects to the exhaust pipe, which would keep it plenty hot.
I have not heard anything in particular to pusher engines and this seal retainer.
Ronnie
----- Original Message -----
From: "Scott Derrick" <scott at tnstaafl.net>
To: "Velocity Aircraft Owners and Builders list" <reflector at tvbf.org>
Sent: Tuesday, September 04, 2007 9:31 AM
Subject: Re: REFLECTOR: crankshaft seal
> My 520 has a retainer but it just helps hold the seal in place. If it
> did blow it sure wouldn't stop any oil from leaking.
>
> My IO360 didn't have one... Not that others might have.
>
> Scott
>
> Jim & Sharon Beck wrote:
>> Sorry for the lack of clarity. It was explained to me as a retainer for the
>> seal that would help retain oil if the seal blew out
>> thanks
>> Jim
>>
>> ----- Original Message -----
>> From: "Scott Derrick" <scott at tnstaafl.net>
>> To: "Velocity Aircraft Owners and Builders list" <reflector at tvbf.org>
>> Sent: Monday, September 03, 2007 7:12 PM
>> Subject: Re: REFLECTOR: crankshaft seal
>>
>>
>>> retainer for what?
>>>
>>> Jim & Sharon Beck wrote:
>>>>
>>>> I just returned from canard flyin at Kanab and someone there
>>>> mentioned that on pusher engines a retainer is required on lycoming
>>>> engines. I am about to replace a leaking seal on my IO360
>>>> Leakcoming. Does anyone have any information on the retainer?
>>>> Thanks
>>>> Jim
>>>>
>>>>
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>
> --
>
> -
> The most effectual engines for [pacifying a nation] are the public
> papers... [A despotic] government always [keeps] a kind of standing army
> of newswriters who, without any regard to truth or to what should be
> like truth, [invent] and put into the papers whatever might serve the
> ministers.
>
> Thomas Jefferson to G. K. van Hogendorp
> Oct. 13, 1785. (*) ME 5:181, Papers 8:632
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