jan.mevis(at)informavia.b
Guest
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 Posted: Wed Jul 18, 2012 4:16 am Post subject: MT 3 Blade Propeller Food For Thought when choosing a prop |
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Thanks for sharing!
Jan
On 18/07/12 14:07, "Kendal Simpson" <kendal(at)acronut.com> wrote:
| Quote: |
That particular prop was an MTV9 on my S2S. They installed 2 or 3 sets of
the new seals on it and the problem always returned.
Kendal
On Jul 18, 2012, at 7:49, Jan Mevis <jan.mevis(at)informavia.be> wrote:
>
>
> This is a remarkable story.
>
> Anyway I have an MTV-9-260 prop on my Yak 50, never had any issues, and
> I'm very satisfied with it.
>
> What exact type of MT prop did you have? There's a service letter from
>MT
> about excessive oil leaks.
>
> Excessive oil leakage can occur when oil with a lot of dirt cuts deep
> scratches on the surface of the pitch change cylinder.
>
> Then you have to change the cylinder and add extra PTFE seals. The newer
> props all have these extra seals, I think.
>
>
> Jan
>
>
>
> On 18/07/12 13:15, "Kendal Simpson" <kendal(at)acronut.com> wrote:
>
>>
>>
>> Yes I worked a deal with Whirlwind but here is some history and my
>> experiences.
>> The last MT prop I owned I couldn't go a full season without it needing
>> to be repaired by MT. The first time I went just over a year since
>> overhaul before I called them about the enormous amount of grease it
>>was
>> slinging. I had to pay for the repair since I waited a month too long.
>> The next two times I would email pics a couple months or weeks after
>>the
>> repairs and then they would cover the labor when I would send it to
>>them.
>> Unfortunately I had to pay for either the shipping or the flight down
>>to
>> FL to have them do it. They wouldn't let the prop shop here in PA do
>>the
>> "warranty" work even though they are an MT authorized shop. I
>>personally
>> don't know any other of my friends who haven't had similar issues with
>> their MTs, and I'm not just talking about a little bit of grease on the
>> back of the blades... When I learned that Whirlwind had this new prop
>> about the same time my new plane was being completed I was excited
>> because I have several friends with Whirlwinds in their L!
>> ycomings and are extremely happy with them. I called Whirlwind and they
>> said they needed to do some setup and testing with this new prop so I
>> volunteered. After we got the pitch stops and counterweights set
>> correctly the prop has been fantastic and trouble free. I've had it two
>> years and over 200 hours on it now and it has needed nothing. I've
>>never
>> flown an MT on an M14 that had more than about 3 very small power
>>ranges
>> where it felt in balance and smooth. When we would have it balanced it
>> would be great until I would do a couple snap rolls or tumbles then it
>> was back to shaking at almost every power setting again. All four
>>that I
>> have flown in different engines would be smooth all the way back or
>>full
>> power but could never do mid range power settings without it being
>>rough.
>> My Whirlwind is extremely smooth at any power setting! I have also
>> had zero surging or any other issues with my Whirlwind running the
>>stock
>> M14 governor. Personally if I hit something with my p!
>> rop my insurance is paying for the blade, prop, engine or what!
>> ever so
>> I wouldn't take that into consideration when buying a prop. MT has a
>>lot
>> of great people that are dealers, employees, and pilots flying their
>> product and they do make a good prop that is certified. However it's
>>been
>> my experience that Whirlwind has a better and significantly cheaper
>>prop
>> that doesn't need any tweaked or new governor to make it work right
>>and I
>> don't have to constantly repair or balance it either. So for me if I
>> needed to buy a new prop, I wouldn't hesitate to buy the Whirlwind.
>>
>> Kendal
>>
>> On Jul 17, 2012, at 17:12, Herb Coussons <drc(at)wscare.com> wrote:
>>
>>>
>>>
>>> I have had excellent experience with MT in the US. I have had typical
>>> short, uninterested types of discussions with the Europeans. So not
>>> surprising to hear of Ray's experience with MT reps at OSH.
>>>
>>> The local MT shop gets 2 thumbs up. 6-7 years ago I also hit
>>>something
>>> at OSH and dinged one blade. In less than 24 hours I had a matched
>>>set
>>> of blades overnighted from MT USA in florida, my local MT rep did the
>>> tear down and rebuild and the prop was back on the plane flying the
>>>same
>>> day.
>>>
>>> Herb
>>>
>>>
>>>
>>>
>>>
>>>
>>> On Jul 17, 2012, at 2:45 PM, Cpayne wrote:
>>>
>>>>
>>>>
>>>> A few years back, during AirVenture, Ray Gage ran over an orange cone
>>>> out in warbird parking with his -TW with an MT. His MT prop sustained
>>>> damage on one blade. The MT rep at Oshkosh, told Ray that single
>>>>blades
>>>> could not be replaced, they must be replaced as a set of three.
>>>>Further
>>>> more they said that the prop hub needed to be examined as well and
>>>>they
>>>> offered to do it.
>>>>
>>>> I observed the teardown, one of the plastic pitch change blocks had
>>>> dented the aluminum rub plate. MT said it was not serviceable and
>>>> charged Ray for a whole new prop. It took a while to get the prop.
>>>>
>>>> After seeing this, and the type of customer service Ray received, I
>>>> decided to forgo purchasing an MT prop.
>>>>
>>>> Craig Payne
>>>>
>>>>
>>>>
>>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>
>>
>>
>>
>>
>
>
>
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