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On Wed, 05 Apr 2006 13:56:26 GMT, George <gvig01@sbcglobal.net> wrote:
>Big John wrote:
>> My friends who flew the P-39, always said they worried about the drive
>> shaft running between their legs, breaking loose :o)
>>
>> Big John
>> ````````````````````````````````````````````````````````````
>>
>> On Wed, 05 Apr 2006 13:23:05 GMT, George <gvig01@sbcglobal.net> wrote:
>>
>>> Richard Lamb wrote:
>>>> ADK wrote:
>>>>
>>>>> IF you had to design a PSRU, to drive a pusher propellor via shaft,
>>>>> what would your experience dictate? Thinking along the lines of a
>>>>> gearbelt, chain or gear. Please, I'd appreciate the collective
>>>>> experience available on this group. I've decided on the aircraft,
>>>>> but want to make it the most reliable and safest it can be.
>>>>>
>>>>> "ADK" <aklettke@okanagan.net> wrote in message
>>>>> news:X6TXf.28774$%H.11944@clgrps13...
>>>>>
>>>>>> This is probably going to open old wounds. What I'd like is
>>>>>> experienced input on the advantages, for economic, efficiency and
>>>>>> longevity etc. of different types of redrives.
>>>>>>
>>>>>> I'm leaning towards a cog-belt reducer in a 6 cylinder, liquid
>>>>>> cooled, configuration driving a long drive shaft to the prop.
>>>>>>
>>>>>
>>>>>
>>>> The collective experience is zilch = nada = squat = undefined.
>>>>
>>>> THAT is what everybody had been trying to tell you.
>>>>
>>>> Wait a second. Look around the airport.
>>>>
>>>> How many shaft driven propellers do you see?
>>>>
>>>> Have you ever seen?
>>>>
>>>> If you are heart set on doing it, I sincerely wish you luck.
>>>>
>>>> But I cannot offer any further advice - 'cuz they ain't none...
>>>>
>>>>
>>>>
>>>> Richard
>>>>
>>>>
>>> Richard,
>>>
>>> Didn't the military do this once?? Seems there was the P-39 Aircobra,
>>> shaft driven from a rear mounted engine?? Are the gray cells working
>>> that far back??
>>>
>>> Not that it would be applicable to an experimental, but at least It was
>>> once done?
>>>
>>> George
>>
>Sounds like a legitimate concern to me
If it EVER did, it was a legitimate concern. Did they have quill shaft
failures???
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Re: PSRU design advantages
