Matronics Email Lists :: View topic

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

carb sync

Matronics Email Lists Forum Index -> RotaxEngines-List

View previous topic :: View next topic

Author Message

domino456(at)sbcglobal.ne
Guest

Posted: Sat Feb 14, 2009 7:52 am Post subject: carb sync

Am I the only guy who is afraid to stand 2 feet  from a spinning prop and sync the carbs.  I run the gauge into the cockpit,  read the differential, shut off the engine and make an adjustment then  start the engine and repeat until I have them synced.

  

 I can't bring myself to work on the carbs while the  prop is spinning.  

  

 I have a Highlander with a 914 soon to be on Czech  amphibious floats.

  

 Thanks,

 Lynn

   [quote][b]

- The Matronics RotaxEngines-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?RotaxEngines-List

larry(at)macsmachine.com
Guest

Posted: Sat Feb 14, 2009 8:19 am Post subject: carb sync

Lynn,

You might inquire if the prop can be removed. My Subaru will run without 

a prop with no consequence. I prefer to adjust carbs, ignition and such 

without

the prop on. For the extra 30-minutes it takes to remove the prop there 

is real added safety.



Larry McFarland 601HDS at www.macsmachine.com



Lynn Vandevort wrote:

 	  Quote: 	
		   Am I the only guy who is afraid to stand 2 feet from a spinning prop 

 and sync the carbs.  I run the gauge into the cockpit, read the 

 differential, shut off the engine and make an adjustment then start 

 the engine and repeat until I have them synced.

  

 I can't bring myself to work on the carbs while the prop is spinning. 

  

 I have a Highlander with a 914 soon to be on Czech amphibious floats.

  

 Thanks,

 Lynn

 *



 *

- The Matronics RotaxEngines-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?RotaxEngines-List

Float Flyr

Joined: 19 Jul 2006
Posts: 2704
Location: Campbellton, Newfoundland

Posted: Sat Feb 14, 2009 12:04 pm Post subject: carb sync

I certainly wouldn’t like to stand That close in front of the prop but standing behind it has never bothered me.  I’m always aware it is there and for that reason I always have one hand on the A frame of the cockpit or a cowl support just to feel more at ease.  I find it also helps to have the wind from the prop blowing me away from it than pulling me into it.  Just one of the reasons that I don’t like the idea of propping an engine from the front.  

   

If you feel safer jumping into the cabin to take the readings then do it that way.   Better to be safe and alive than ...  

   

I’ve worked around helicopters a bit and I don’t mind ducking under the tail boom to go from the left to the right but I give that tail rotor a lot of respect and lea-way.    

   

Noel  

       

From: owner-rotaxengines-list-server(at)matronics.com [mailto:owner-rotaxengines-list-server(at)matronics.com] On Behalf Of Lynn Vandevort

 Sent: Saturday, February 14, 2009 12:14 PM

 To: rotaxengines-list(at)matronics.com

 Subject: carb sync  

  

  

     

Am I the only guy who is afraid to stand 2 feet from a spinning prop and sync the carbs.  I run the gauge into the cockpit, read the differential, shut off the engine and make an adjustment then start the engine and repeat until I have them synced.  

    

   

    

I can't bring myself to work on the carbs while the prop is spinning.    

    

   

    

I have a Highlander with a 914 soon to be on Czech amphibious floats.  

    

   

    

Thanks,  

    

Lynn  

   	  Quote: 	
		    http://www.matronics.com/Navigator?RotaxEngines-List 	
0 	  Quote: 	
		   	
1 	  Quote: 	
		   	
2 	  Quote: 	
		   	
3 	  Quote: 	
		   	
4 	  Quote: 	
		   	
5 	  Quote: 	
		   	
6 	  Quote: 	
		   	
7 	  Quote: 	
		   	
8 	  Quote: 	
		   	
9

       [quote][b]

- The Matronics RotaxEngines-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?RotaxEngines-List

_________________
Noel Loveys
Kitfox III-A
Aerocet 1100 Floats

Float Flyr

Joined: 19 Jul 2006
Posts: 2704
Location: Campbellton, Newfoundland

Posted: Sat Feb 14, 2009 12:11 pm Post subject: carb sync

The Subaru is gear driven the Jabiru is direct drive. That can make all the

difference.  The good old Lyc. And Conti engines use the prop as part of the

flywheel and they can be real buggers to get running without the prop or a

test paddle. Idling without the prop on those engines is just not going to

happen.  The old Bell 47-G which used a "conventional engine", mounted

vertically, without a fly wheel had to "idle" just below cruise throttle

settings ( 200 comes to mind but it may have been higher.  Getting one of

those things to start in cold weather was ... let's say fun. Getting the

rotor clutches engaged without stalling the engine was another ball game

altogether.  The colder it got the harder it got.  Hard to believe they used

those things through the winter in Korea.



Noel



--

- The Matronics RotaxEngines-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?RotaxEngines-List

_________________
Noel Loveys
Kitfox III-A
Aerocet 1100 Floats

rampil

Joined: 04 May 2007
Posts: 870

Posted: Sat Feb 14, 2009 5:08 pm Post subject: Re: carb sync

Larry, 

Without a load on the crankshaft, a rotax 9xx will overspeed easily

and destroy its pistons and valves. Not Recommended!



Refer to page 12 of the 912 Install Manual May 1 2007 version

- The Matronics RotaxEngines-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?RotaxEngines-List

_________________
Ira N224XS

Roger Lee

Joined: 10 Jan 2006
Posts: 1464
Location: Tucson, Az.

Posted: Sat Feb 14, 2009 5:11 pm Post subject: Re: carb sync

Do not run a Rotax 912 series engine without the prop.

- The Matronics RotaxEngines-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?RotaxEngines-List

_________________
Roger Lee
Tucson, Az.
Rotax Instructor & Rotax IRC
Light Sport Repairman
Home 520-574-1080 TRY HOME FIRST
Cell 520-349-7056

Display posts from previous:

	Matronics Email Lists Forum Index -> RotaxEngines-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