REFLECTOR: Engines and High DA

[Scott Derrick]

Ron, 

If  IVO thought their prop was good to go on Lycoming and Continental 4 
or 6 bangers, you can be sure they would be beating the bushes to sell 
them for those engines. 

Instead of trying to sell, they don't even want to talk to you if you 
say your installing on an IO550 or  IO540 or IO520 or IO470 or IO360 or ....

I think that says alot.

Scott


Ron Brown wrote:

> Kurt,
>
> I'm not convinced that the IVO/Lycoming 4 thumper is a problem.  The 
> unfortunate accident with Mark Ewart was attributed to poor reassembly 
> and not following procedures.  Are there any other documented failures 
> with the IVO on Lycomings?
>
> Sort of like the admonishment not to use metal props on the back on 
> canards. Melville had one and said it shook real bad - so no metal 
> props on canards - yet they fly behind the Cessna Skymaster all the 
> time.  Any other documented problems???
>
> Ronnie
>
> ----- Original Message ----- From: <NMFlyer1 at aol.com>
> To: "Velocity Aircraft Owners and Builders list" <reflector at tvbf.org>
> Sent: Sunday, February 06, 2005 11:23 AM
> Subject: Re: REFLECTOR: Engines and High DA
>
>
>> Jim,
>>
>>  Well.. at risk of starting another gripe-fest from people that have 
>> not used the equipment:
>>
>> I am using the IVO 76" 3 blade CS prop (pitch range 65-105).
>> IVO was very careful in making sure that I did not have a problem 
>> area (IE 4-cyl thumper lyc).  He asked tons of questions, Listened 
>> more and appeared genuinely concerned that he would not sell me a 
>> problem. More than any of the so-called certafied prop guys. I also 
>> researched from the people that have IVO-s on NON-Lycoming 
>> applications, they love it.
>>
>> Considering that, the cost benefit numbers change substantially.
>>
>> I was out at Lincold at Velocity West when Mark put the IVO on the 
>> old 173 FGE (which is what I have). He said that the performance was 
>> "somewhere between frightening and exhilerating".  They did remove it 
>> later due to the 4-cylinder thumper lycoming mismatch problems.
>>
>> As for the runway lengths:  you are right on the numbers. Since I 
>> only have 4800', I want to be able to abort without ending up in my 
>> neighbor's yard should I have to. So the 2500' takeoff roll.... plus 
>> the abort stop distance puts me a little closer to the limit.
>>
>> I appreciate the input.   Kurt
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