Hi Tony,
My first post wasn't very well worded. The stern post is, as you say,
immensely strong and shouldn't give cause for worry.
My concern is for the proximity of a large diameter hole so close to the
tailwheel spring mounting point. The tailwheel loads on a mono will be
dissipated upwards through the sternpost. By placing the inspection hole
immediately above it in the load path, there is a possibility of failure
should the aircraft experience a ground loop or particularly heavy
tail-down landing. The farther away this hole is placed from the spring,
and the smaller the diameter of the hole, the less likelihood of a
problem. The position is of course, dictated by the alignment of the
pitch push-rod (as per O.P.'s post). The trig-gear does not have this
problem as it has no tail spring.
Nigel
On 23/11/2014 03:04, Tony Renshaw wrote:
>
> Hi Nigel,
> Why would you worry about the sternpost carrying some of the load? The way it
is reduxed in, well I would think it should make no difference as it is such
a strong member. I for example am building a Classic, but have incorporated a
sternpost. My tail spring sits quite tightly in the sternpost, and mine is a
mono
wheel, actually a taildragger. Id like to know if anyone else sees this as
an issue?
> Regards
> Tony Renshaw
> P.S. I have thought of reinforcing the tail area nevertheless, as that hole
> for
access is a big one.
>
>> On 23 Nov 2014, at 11:23 am, Nigel Graham <nigel_graham@m-tecque.co.uk>
>> wrote:
>>
>>
>> I'm not aware of a mod ever being requested for this.
>> If you are building a mono wheel with a tail spring, then this might not be
a great idea as the stern post will carry some of the weight of the aircraft on
the ground.
>> If on the other hand you are building a tri-gear, then would think that the
stern post will not be subjected to any great loads that low down, so it
shouldn't
be a problem. G-IANI is a tri-gear.
>>
>> Nigel
>>
>> On 22/11/2014 22:39, spcialeffects wrote:
>>>
>>> Hello all. I would like to make an access panel in the stern post in case I
need to remove the long control shaft and also to make it easier for access into
the tail end For maintance. My inspector is a bit dubious about cutting into
the post but I said to him that I got the idea after seeing that G-IANI has
a vent from the D panel to the stern post. So my question is, is there a mod
for this install on G-IAN
>>>
>>> Attachments:
>>>
>>> http://forums.matronics.com//files/image_995.jpg
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>
>>
>>
>>
>
>
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