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Mark 3C/912 on floats & CHT sending unit

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smlplanet(at)msn.com
Guest

Posted: Sat Nov 08, 2008 4:54 pm Post subject: Mark 3C/912 on floats & CHT sending unit

I am looking for information on Puddle Jumper floats mounted on the Mark 3 

C. I have tried to get some information from Kolb for the past 2 yrs with 

out any luck. If you have any information or photos you can direct me to it 

would be a great help. I have a chance to get a set with retractable landing 

gear which is why I am looking for help.

The other thing is the CHT sending units on the 912 UL, are they F or C 

degrees which dicates which gages to use, some of us use the F gages and the 

temp always runs low as does the oil temp.



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Dana

Joined: 13 Dec 2007
Posts: 1047
Location: Connecticut, USA

Posted: Sat Nov 08, 2008 6:35 pm Post subject: Mark 3C/912 on floats & CHT sending unit

At 07:53 PM 11/8/2008, smlplanet(at)msn.com wrote:



 	  Quote: 	
		  The other thing is the CHT sending units on the 912 UL, are they F or C 

degrees which dicates which gages to use, some of us use the F gages and 

the temp always runs low as does the oil temp.


	


There is no F or C sender.  The gauge has F or C markings (or both), but 

that's just the markings on the dial.  The thermocouple type used depends 

on the application, typically type "J" thermocouples are used on CHT gauges 

whereas type "K" are used for EGT (the "J" type produces more voltage for a 

given temperature, making it more accurate at lower temperatures, but it's 

limited to about 750°F).  Thermocouple gauges need no external power.  Oil 

temp gauges usually use a thermistor rather than a thermocouple sender 

which is completely different, and require external power.



-Dana

--

  The city is not a concrete jungle.  It is a human zoo.

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customersupport(at)tnkolb
Guest

Posted: Mon Nov 10, 2008 6:34 am Post subject: Mark 3C/912 on floats & CHT sending unit

SMLPLANET(at)MSN.COM.   THE FLOATS HAVE NOT BEEN INSTALLED ON THE MARK 3 YET

AND HAVE NOT BEEN TESTED.  WE HAVE THE FLOATS HERE AT KOLB BUT WE HAVE NOT

HAD THE TIME TO DO THIS.  PUDDLE JUMPER MFG. HAS PLANS TO COME HERE AND

INSTALL AND SET THE FLOATS UP THE THEY ARE SUPPOSED TO BE,  THEN WILL BUILD

MOUNTING KIT FOR ATTACHMENT,  BUT THIS WILL BE IN THE SPRING OF 2009.  ANY

MORE INFO. LET US KNOW OR YOU CAN CONTACT PUDDLE JUMPERS.  THANKS DONNIE.

From: <smlplanet(at)msn.com>

To: <kolb-list(at)matronics.com>

Sent: Saturday, November 08, 2008 7:53 PM

Subject: Mark 3C/912 on floats & CHT sending unit

 	  Quote: 	
		   



 I am looking for information on Puddle Jumper floats mounted on the Mark 3

 C. I have tried to get some information from Kolb for the past 2 yrs with

 out any luck. If you have any information or photos you can direct me to

it
	


 	  Quote: 	
		   would be a great help. I have a chance to get a set with retractable

landing
	


 	  Quote: 	
		   gear which is why I am looking for help.

 The other thing is the CHT sending units on the 912 UL, are they F or C

 degrees which dicates which gages to use, some of us use the F gages and

the
	


 	  Quote: 	
		   temp always runs low as does the oil temp.



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John Hauck

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

Posted: Tue Nov 11, 2008 9:11 pm Post subject: Mark 3C/912 on floats & CHT sending unit

> The other thing is the CHT sending units on the 912 UL, are they F or C

 	  Quote: 	
		   degrees which dicates which gages to use, some of us use the F gages and 

 the temp always runs low as does the oil temp.


	




Hi Folks:



Don't know who I am responding to.  Helps to sign your emails.  Its the nice 

thing to do.



All three temp senders on the 912 series engines are 0 to 300 F.



Oil pressure sender is 0 to 150 lbs.



I use F.  You may also use C.  If you wish, you may do a little leg work. 

All this info is available at no charge from Kodiak Research, the Rotax 

importer.  In fact, all the manuals for all the engines, two and four 

stroke, are available on their web site on line.



The reason your instruments are indicating the engine CHT and Oil Temps are 

low is probably because that is the condition of your engine.  The 80 horse 

912UL runs extremely cool, especially in the winter.  I found that taping 

the oil cooler will bring the engine oil temps up to a minimum 190F and also 

raise CHT so the engine will run better in colder OATs.



john h

mkIII

Nellis AFB, NV - Been on the road 6 weeks.  Lap top has  been down 6 weeks. 

;-(  This afternoon, lap top was convinced to start working again.  Found 

out I had installed a new stick of memory that was bad.  Problem corrected. 

  Hope to be back at hauck's holler before 2009.  Having fun traveling, 

exploring on dirt bike and atv, and visiting good friends.  Probably be in 

the Monument Valley area next week.  I love to fly and drive into that part 

of Utah.

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

russ(at)rkiphoto.com
Guest

Posted: Wed Nov 12, 2008 6:42 am Post subject: Mark 3C/912 on floats & CHT sending unit

SAFE TO READ -- REQUIRES NO AN SWER

 	  Quote: 	
		   Glad you're having a fun trip.

 "Lap top has  been down 6 weeks." --? sounds like heaven

Have  a  ball
	


Russ

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