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  #1  
Old 01-04-2018, 06:22 PM
E. D. Eliot E. D. Eliot is offline
 
Join Date: Dec 2005
Location: San Pedro
Posts: 860
Default TESTING - 3 blade prop in RV-12 iS

Was at Van's yesterday - looking around, returning parts that I over-ordered, picking up new parts. Walked out to the hanger to look at what's new just as Scott returned from an iS demo flight. Beautiful airplane! Noticed that they are 'testing a three blade prop. Asked if it was a CATO prop and if it was ok to list that info here. Was told that it was likely (not sure) a CATO, that they were testing it, and that it was ok to post here. A beautiful prop. Hope that it works out ok. Took a photo but there is no way that I am able to post it here - sorry.
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  #2  
Old 01-04-2018, 06:55 PM
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Phantom30 Phantom30 is offline
 
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Location: Coeur d'Alene, ID/Casa Grande, AZ
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Default

Quote:
Originally Posted by E. D. Eliot View Post
Was at Van's yesterday - looking around, returning parts that I over-ordered, picking up new parts. Walked out to the hanger to look at what's new just as Scott returned from an iS demo flight. Beautiful airplane! Noticed that they are 'testing a three blade prop. Asked if it was a CATO prop and if it was ok to list that info here. Was told that it was likely (not sure) a CATO, that they were testing it, and that it was ok to post here. A beautiful prop. Hope that it works out ok. Took a photo but there is no way that I am able to post it here - sorry.
Very interesting!!! Love to hear what Vanís thinks.
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Ric Dickison
307 (CAB) Phantom
Search and Destroy (Can
Tho RVN)
Distinguished Flying Cross Society Member
CH-47 & UH-1H "Driver"
Rotax 9 Series Service IRMT

RV-12 Kit#729 "N312RD" is now a full functioning fun machine!! Thanks Van for fulfilling my dream😎
2018 Dues Paid
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  #3  
Old 01-04-2018, 11:26 PM
rvbuilder2002 rvbuilder2002 is offline
 
Join Date: Jul 2005
Location: Hubbard Oregon
Posts: 7,255
Default

Quote:
Originally Posted by E. D. Eliot View Post
Was at Van's yesterday - looking around, returning parts that I over-ordered, picking up new parts. Walked out to the hanger to look at what's new just as Scott returned from an iS demo flight. Beautiful airplane! Noticed that they are 'testing a three blade prop. Asked if it was a CATO prop and if it was ok to list that info here. Was told that it was likely (not sure) a CATO, that they were testing it, and that it was ok to post here. A beautiful prop. Hope that it works out ok. Took a photo but there is no way that I am able to post it here - sorry.
It was nice meeting you yesterday Ed.
Sorry I had to run right away.... we were late getting to a meeting after returning from a test flight evaluating the propeller performance.

One correction.... the propeller being test is a Sensenich 3 blade ground adjustable. It is an updated version from the original design we tested early in the RV-12 development program and decided not to offer in the kit.

The decision on whether to offer this newer design as an option is still under evaluation.
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RV-6A (aka "Junkyard Special ")
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  #4  
Old 01-05-2018, 01:25 AM
E. D. Eliot E. D. Eliot is offline
 
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Location: San Pedro
Posts: 860
Default Link attached - I hope

Here's the photo link - I hope.


https://imgur.com/q5BNhUU
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  #5  
Old 01-05-2018, 08:10 PM
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Phantom30 Phantom30 is offline
 
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Originally Posted by E. D. Eliot View Post
Here's the photo link - I hope.


https://imgur.com/q5BNhUU
Love the look of that egg beater!
__________________
Ric Dickison
307 (CAB) Phantom
Search and Destroy (Can
Tho RVN)
Distinguished Flying Cross Society Member
CH-47 & UH-1H "Driver"
Rotax 9 Series Service IRMT

RV-12 Kit#729 "N312RD" is now a full functioning fun machine!! Thanks Van for fulfilling my dream😎
2018 Dues Paid
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  #6  
Old 01-05-2018, 08:14 PM
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Phantom30 Phantom30 is offline
 
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Location: Coeur d'Alene, ID/Casa Grande, AZ
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Originally Posted by rvbuilder2002 View Post
It was nice meeting you yesterday Ed.
Sorry I had to run right away.... we were late getting to a meeting after returning from a test flight evaluating the propeller performance.

One correction.... the propeller being test is a Sensenich 3 blade ground adjustable. It is an updated version from the original design we tested early in the RV-12 development program and decided not to offer in the kit.

The decision on whether to offer this newer design as an option is still under evaluation.
Scott..would love to hear what the test pilot thought relative in smoothness compared to 2 blade...whether Vanís decides to offer as option..
__________________
Ric Dickison
307 (CAB) Phantom
Search and Destroy (Can
Tho RVN)
Distinguished Flying Cross Society Member
CH-47 & UH-1H "Driver"
Rotax 9 Series Service IRMT

RV-12 Kit#729 "N312RD" is now a full functioning fun machine!! Thanks Van for fulfilling my dream😎
2018 Dues Paid
Reply With Quote
  #7  
Old 01-06-2018, 02:14 PM
rvbuilder2002 rvbuilder2002 is offline
 
Join Date: Jul 2005
Location: Hubbard Oregon
Posts: 7,255
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Originally Posted by Phantom30 View Post
Scott..would love to hear what the test pilot thought relative in smoothness compared to 2 blade...whether Vanís decides to offer as option..
There is no noticeable difference in smoothness between the standard two blade and the three blade being tested as long as both have had the blade pitch set accurately and a dynamic balance has been done.

A few other comparisons...

The 3 blade is between 1-2 lbs lighter than the two blade.

It makes the lower cowl more difficult to remove and install (will require a longer nose gear leg slot if it is officially adopted)

It has zero indexing capability for the blade pitch so each blade must be 100% adjusted manually (not a big deal for those that want smooth running and do that anyway)

The prop can be removed from the engine with the blades still installed, so no repitching is necessary if removed for 500 hr gear box inspections, etc.

Comparisons in performance will have to wait.......
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