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Subject: Re: [FlyRotary] Re: Leaking input shaft
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From: Christamarmc <christamarmc@gmail.com>
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Date: Sun, 9 Mar 2014 11:01:08 +1000
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
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Yes I agree, I have just totally revamped the cooling system totally so hope=
fully expecting allot better results have mounted the rads flat under the mo=
tor with ducts and vented via Venetian style vents strait out, hopefully all=
ot better.

Time will tell

Cheers

Sent from my iPad

On 09/03/2014, at 8:58 AM, Tracy <rwstracy@gmail.com> wrote:

> Just FYI,  I have found that life of the input shaft seal is closely relat=
ed to oil temperature.   The hotter the oil temp, the sooner the seal gets h=
ard and looses its elasticity and ability to seal.
>=20
> Tracy
>=20
> Sent from my iPad
>=20
>> On Mar 8, 2014, at 15:17, Christamarmc <christamarmc@gmail.com> wrote:
>>=20
>> Hi Tracy
>> Many thanks for the input, I have removed the seal and she was a bit hard=
 from use, so a new one is being  installed and should fix it. Certainly lov=
e flying behind the rotary.
>>=20
>> Cheers
>> Christian
>>=20
>> Sent from my iPad
>>=20
>>> On 08/03/2014, at 10:39 PM, Tracy <rwstracy@gmail.com> wrote:
>>>=20
>>> Neil's advice was right on.   When installed, there should be virtually n=
o side play but there is nothing to restrain it when removed from the engine=
 other than the pilot bearing on the prop shaft and that alone would allow i=
t to wobble about quite a bit.  The clearance on that bearing is fairly larg=
e in order to flow enough cooling oil for the gears.  =20
>>>=20
>>> Tracy
>>>=20
>>> PS:  Congrats on getting 400 hours in your plane Christian, and to Bob o=
n that great article in Experimenter.  I always get a kick out of hearing th=
at rotary powered planes are out there and flying.
>>>=20
>>> Sent from my iPad
>>>=20
>>>> On Mar 8, 2014, at 3:13, Christamarmc <christamarmc@gmail.com> wrote:
>>>>=20
>>>> Cheers Neil
>>>> Just wondering how much play there should be, but seal is worn so will r=
eplace and see how it goes.
>>>>=20
>>>> Cheers
>>>>=20
>>>> Sent from my iPad
>>>>=20
>>>>> On 08/03/2014, at 5:49 PM, "Neil Unger" <neil.unger@bigpond.com> wrote=
:
>>>>>=20
>>>>> Chris,
>>>>>      That shaft is held true in the flywheel and in the planetries the=
 other end.  Once removed I suspect that the shaft would be "moveable" as yo=
u describe.  Suggest a new seal and see what happens.  hours is reasonable f=
or a simple 1 inch seal.  Neil.
>>>>>=20
>>>>> -----Original Message----- From: Christamarmc
>>>>> Sent: Saturday, March 08, 2014 4:06 PM
>>>>> To: Rotary motors in aircraft
>>>>> Subject: [FlyRotary] Leaking input shaft
>>>>>=20
>>>>>=20
>>>>> Hi all
>>>>> Just wondering whether anyone can tell me what the play side to side s=
hould be in the rd1c gearbox input shaft and what to expect from the oil sea=
l, i can move the input shaft a little and see a visible gap on the input se=
al once removed from the motor.Motor has done approx 400 hrs.
>>>>> Just reinstalled the motor after some work and noticed oil dribbling f=
rom under the flywheel, thus why it was removed.
>>>>>=20
>>>>> Cheers
>>>>> Christian
>>>>> Sent from my iPad
>>>>> --
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>=20
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