Matronics Email Lists :: View topic - Anouncement MT compared to Hartzel

Matronics Email Lists
Web Forum Interface to the Matronics Email Lists

Get Email Distribution Too! FAQ Search Memberlist Usergroups Register

Profile Log in to check your private messages Log in

Anouncement MT compared to Hartzel

Matronics Email Lists Forum Index -> TeamGrumman-List

View previous topic :: View next topic

Author Message

Discover

Joined: 26 Feb 2007
Posts: 429

Posted: Sat Feb 06, 2010 8:37 am Post subject: Anouncement MT compared to Hartzel

The spinner assembly is also included with the  MT.

  

 The MT is not inexpensive but until our  resident rocket scientist and Grumman Guy gets the O360B1E approved it's the  only game in town for a controllable pitch prop.

 



 Comparing to your Bonanza prop is really an  apples to oranges comparison.

  

 The Hartzell being hydraulic while the MT is  electric with the associated computer controller box that senses rpm and issues  electronic signals to the motor to make fine pitch adjustments. All this  technology costs more than the older hydraulic technology. 

 In addition, the MT has features the Hartzell  does not have. The MT can be put in manual mode allowing the prop to function  like a fixed pitch prop. This has a few advantages one being that you can lean  to best power by watching your Tach. Can't do that with a hydraulic  prop.

   

 Hartzell does make an electric controlled prop  so there is really no comparison.

 But let's run the numbers anyway:

 If your not getting some kind of discount then  the hydraulic Hartzell for an O360 powered Cessna is $9750 It also  weighs 67 lbs; 13 lbs more than the MT.

Let's see using the estimate of  $1500 for a governor, Hartzel costs $9750 + $1500 = $11,250 compared to the MT  at $11,232 for the first 10 purchasers until March 15. 

  

 So the MT is less than the  Hartzell!

  

 Considering all the above it's really not a  bad deal. 



 Your Fellow Grumman Enthusiast,

 ned

 



 [quote]   Forgot to mention that the price I mentioned    INCLUDED the spinner assembly.

    

   Cliff

[b]

- The Matronics TeamGrumman-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?TeamGrumman-List

Discover

Joined: 26 Feb 2007
Posts: 429

Posted: Sat Feb 06, 2010 8:46 am Post subject: Anouncement MT compared to Hartzel

typo correction where it says Hartel does make  change to does NOT make

 [quote]   ---

- The Matronics TeamGrumman-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?TeamGrumman-List

flyv35b(at)minetfiber.com
Guest

Posted: Sat Feb 06, 2010 10:51 am Post subject: Anouncement MT compared to Hartzel

 The Hartzell being hydraulic while the MT is  electric with the associated computer controller box that senses rpm and issues  electronic signals to the motor to make fine pitch adjustments. All this  technology costs more than the older hydraulic  technology. 



  

 Are you sure the MT prop for the Bonanza is  electric?

  

  In addition, the MT has features the Hartzell  does not have. The MT can be put in manual mode allowing the prop to function  like a fixed pitch prop. This has a few advantages one being that you can lean  to best power by watching your Tach. Can't do that with a hydraulic  prop.

  

 I wouldn't want to lean that way.  It's a crude  way of leaning.

  

 Cliff



 [quote]   ---

- The Matronics TeamGrumman-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?TeamGrumman-List

GrummanDude

Joined: 15 Jan 2006
Posts: 926
Location: Auburn, CA

Posted: Sat Feb 06, 2010 12:20 pm Post subject: Anouncement MT compared to Hartzel

My bottom line will be predicated on weight.

 

  

 

 

  --

- The Matronics TeamGrumman-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?TeamGrumman-List

_________________
Gary
AuCountry Aviation
Home of Team Grumman

flyv35b(at)minetfiber.com
Guest

Posted: Sat Feb 06, 2010 12:38 pm Post subject: Anouncement MT compared to Hartzel

The composite blade props will be lighter weight than  and all aluminum blade.  I seem to recall that Hartzell is now making a  composite blade prop for experimental use.  If you are starting with a  whole different engine model why not look at a lighter weight composite  prop.  I just think that with MT's requirement to ship the prop back to one  service center and maybe weight weeks for it to get repaired as compared to  having most any prop shop repair a Hartzell has to be a detracting factor for  the MT.  I know of one experimental owner who had a MT who waited weeks and  weeks to get a governor for his MT prop from Germany.

  

 Cliff

 [quote]   ---

- The Matronics TeamGrumman-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?TeamGrumman-List

Discover

Joined: 26 Feb 2007
Posts: 429

Posted: Sat Feb 06, 2010 6:36 pm Post subject: Anouncement MT compared to Hartzel

I was comenting on your comparison and trying  to connect that comparison to what is actually available. Hartzell props are not  electric but hydraulic.

  

 On the leaning for best power by using the  Tach. That is the method prescribed in the Lycoming Engine Operators Book and it  seems to work very well. Can you tell me a better way to lean for best  power?

 [quote]         





   Are you sure the MT prop for the Bonanza is    electric?

    

      In addition, the MT has features the    Hartzell does not have. The MT can be put in manual mode allowing the prop to    function like a fixed pitch prop. This has a few advantages one being that you    can lean to best power by watching your Tach. Can't do that with a hydraulic    prop.

    

   I wouldn't want to lean that way.  It's a crude    way of leaning.

    

   Cliff



[b]

- The Matronics TeamGrumman-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?TeamGrumman-List

Discover

Joined: 26 Feb 2007
Posts: 429

Posted: Sat Feb 06, 2010 6:44 pm Post subject: Anouncement MT compared to Hartzel

When was it that the experimental owner waitd weeks to  get a governor? Was it perhaps several years ago? The required governor is  stocked by Van's htese days and manuy other supply houses. I bought the PCU  5000 which works for the MT for my RV9A Whirlwing prop about 5 years  ago from a shop in Illinois and it took 3 days shipping to  receive.

  

 I will be getting my 6 year TBO on my MT prop done  this month in Oxnard. It is expected to take one week and most of that time is  the 4 days round trip shipping. 

  

 It just sounds like you don't like the idea of MT  props in general?

  

  Are you saying that MT props are not a  good thing for the Tiger?

 Ned

  

 .....  I just think that with MT's requirement to  ship the prop back to one service center and maybe weight weeks for it to get  repaired as compared to having most any prop shop repair a Hartzell has to be a  detracting factor for the MT.  I know of one experimental owner who had a  MT who waited weeks and weeks to get a governor for his MT prop from  Germany.

 Cliff

   [quote][b]

- The Matronics TeamGrumman-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?TeamGrumman-List

Display posts from previous:

	Matronics Email Lists Forum Index -> TeamGrumman-List	All times are GMT - 8 Hours
Page 1 of 1

Jump to:

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum