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Rotax 912S with Prop Strike (stay away???)

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albertakolbmk3

Joined: 13 Jun 2009
Posts: 69
Location: Innisfail, AB

Posted: Mon Feb 01, 2010 9:33 am Post subject: Rotax 912S with Prop Strike (stay away???)

Hi guys,



Found a 912S but had a prop strike when the owner flipped it. Would you consider it? What to look for? Avoid it like the plague?

_________________
Tony B.

Kolb MKIII C
Rotax 582
C Gearbox 3.00:1
WD 66" 3 Blade Prop

John Hauck

Joined: 09 Jan 2006
Posts: 4639
Location: Titus, Alabama (hauck's holler)

Posted: Mon Feb 01, 2010 10:41 am Post subject: Rotax 912S with Prop Strike (stay away???)

> Found a 912S but had a prop strike when the owner flipped it. Would you 

consider it? What to look for? Avoid it like the plague?

 	  Quote: 	
		  

 --------

 Tony B.


	


First thing I would check is installation of a slip clutch.  Early 912ULS 

engines did not have a slip clutch.  It later became an option, along with a 

high torque starter.  New 912ULS engines come equipped with the high torque 

starter and slip clutch.



It it has a slip clutch I'd be interested.



Any idea what rpm was when he hit?



john hauck

mkIII

titus, alabama

_________________
John Hauck
MKIII/912ULS
hauck's holler
Titus, Alabama

albertakolbmk3

Joined: 13 Jun 2009
Posts: 69
Location: Innisfail, AB

Posted: Mon Feb 01, 2010 11:13 am Post subject: Re: Rotax 912S with Prop Strike (stay away???)

I can find out. He's asking $10,500 that includes everything firewall forward except engine mount. Has 670 hrs. on it.

_________________
Tony B.

Kolb MKIII C
Rotax 582
C Gearbox 3.00:1
WD 66" 3 Blade Prop

albertakolbmk3

Joined: 13 Jun 2009
Posts: 69
Location: Innisfail, AB

Posted: Mon Feb 01, 2010 11:15 am Post subject: Re: Rotax 912S with Prop Strike (stay away???)

The plane was a 2007 so I'm guessing the engine is pretty recent also.

_________________
Tony B.

Kolb MKIII C
Rotax 582
C Gearbox 3.00:1
WD 66" 3 Blade Prop

Thom Riddle

Joined: 10 Jan 2006
Posts: 1597
Location: Buffalo, NY, USA (9G0)

Posted: Mon Feb 01, 2010 11:25 am Post subject: Re: Rotax 912S with Prop Strike (stay away???)

Another useful bit of information would be what kind of prop was installed when it struck the ground and was the airplane moving forward at substantial speed at impact or just rotational motion at time of impact. A wood prop absorbs a lot of energy at impact, as do the lighter weight props like Power Fin. I would also recommend a prop flange run out check first and if that is OK then a gearbox removal and internal inspection before committing to purchase.

_________________
Thom Riddle
Buffalo, NY (9G0)

Don't worry about old age... it doesn't last very long.
- Anonymous

albertakolbmk3

Joined: 13 Jun 2009
Posts: 69
Location: Innisfail, AB

Posted: Mon Feb 01, 2010 11:35 am Post subject: Re: Rotax 912S with Prop Strike (stay away???)

It had a wood prop. Just emailed him some other questions that john had mentioned also...waiting to hear back.

_________________
Tony B.

Kolb MKIII C
Rotax 582
C Gearbox 3.00:1
WD 66" 3 Blade Prop

John Hauck

Joined: 09 Jan 2006
Posts: 4639
Location: Titus, Alabama (hauck's holler)

Posted: Mon Feb 01, 2010 11:41 am Post subject: Rotax 912S with Prop Strike (stay away???)

A wood prop absorbs a lot of energy at impact, as do the lighter weight 

props like Power Fin. I would also recommend a prop flange run out check 

first and if that is OK then a gearbox removal and internal inspection 

before committing to purchase.

 	  Quote: 	
		  

 --------

 Thom Riddle


	


I didn't do a good job, as usual of explaining myself.



If it has a slip clutch, which it probably does since it is a 2007, the slip 

clutch should absorb any rotational impact of the prop shaft, unlike a 

direct drive engine with the prop on the crank shaft.



I'm going to try and take a second to proof read what I write, in the 

future, so folks will understand what I am trying to say.



I'd also start out at 6,500.00 and go from there.



john hauck

mkIII

titus, alabama

_________________
John Hauck
MKIII/912ULS
hauck's holler
Titus, Alabama

albertakolbmk3

Joined: 13 Jun 2009
Posts: 69
Location: Innisfail, AB

Posted: Mon Feb 01, 2010 12:16 pm Post subject: Re: Rotax 912S with Prop Strike (stay away???)

He says he was coming in to land and was throttled back.

_________________
Tony B.

Kolb MKIII C
Rotax 582
C Gearbox 3.00:1
WD 66" 3 Blade Prop

John Hauck

Joined: 09 Jan 2006
Posts: 4639
Location: Titus, Alabama (hauck's holler)

Posted: Mon Feb 01, 2010 12:33 pm Post subject: Rotax 912S with Prop Strike (stay away???)

> He says he was coming in to land and was throttled back.

 	  Quote: 	
		   

 --------

 Tony B.

 
	




Sounds like a good engine.  If I needed it, I'd jump on it.



john h

mkIII

Titus, Alabama

_________________
John Hauck
MKIII/912ULS
hauck's holler
Titus, Alabama

rickofudall

Joined: 19 Sep 2009
Posts: 1392
Location: Udall, KS, USA

Posted: Mon Feb 01, 2010 12:43 pm Post subject: Rotax 912S with Prop Strike (stay away???)

Tony, All Rotax aircraft engines have pressed together cranks. Have the owner pull the gearbox and get the runout at the crank nose checked with a VERY sensitive ( .0001" at least, .00005" is better ). Check at the end of the taper and as close to the seal as you can get. Even then, start the bidding at the cost of installing a new crank assembly below the owner's asking price. 



Rick Girard



On Mon, Feb 1, 2010 at 1:37 PM, John Hauck <jhauck(at)elmore.rr.com (jhauck(at)elmore.rr.com)> wrote:

[quote] --> Kolb-List message posted by: "John Hauck" <jhauck(at)elmore.rr.com (jhauck(at)elmore.rr.com)>

 

 

 A wood prop absorbs a lot of energy at impact, as do the lighter weight props like Power Fin. I would also recommend a prop flange run out check first and if that is OK then a gearbox removal and internal inspection before committing to purchase.

   	  Quote: 	
		   

 --------

 Thom Riddle

 	
 

 

 

 I didn't do a good job, as usual of explaining myself.

 

 If it has a slip clutch, which it probably does since it is a 2007, the slip clutch should absorb any rotational impact of the prop shaft, unlike a direct drive engine with the prop on the crank shaft.

 

 I'm going to try and take a second to proof read what I write, in the future, so folks will understand what I am trying to say.

 

 I'd also start out at 6,500.00 and go from there.

 

 john hauck

 mkIII

 titus, alabama 



 

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rickofudall

Joined: 19 Sep 2009
Posts: 1392
Location: Udall, KS, USA

Posted: Mon Feb 01, 2010 12:46 pm Post subject: Rotax 912S with Prop Strike (stay away???)

What's the last thing a pilot who has landed with the landing gear up does? He puts the gear switch in the down position. Unless you can find witnesses to verify assume he did everything possible wrong and bid accordingly. 



Rick Girard



On Mon, Feb 1, 2010 at 2:29 PM, John Hauck <jhauck(at)elmore.rr.com (jhauck(at)elmore.rr.com)> wrote:

[quote] --> Kolb-List message posted by: "John Hauck" <jhauck(at)elmore.rr.com (jhauck(at)elmore.rr.com)>

 

 



 > He says he was coming in to land and was throttled back.

  	  Quote: 	
		   

 --------

 Tony B.

 	
 

 

 

 

 Sounds like a good engine.  If I needed it, I'd jump on it.

 

 john h

 mkIII

 Titus, Alabama



 

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