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  #1  
Old 04-17-2015, 08:56 AM
Pilotman Pilotman is offline
 
Join Date: Jan 2012
Location: Dallas,TX
Posts: 7
Default Carburetor Sync Equipment

I want to build the test fixture for synchronizing the carburetors. Any suggestions with associated piece part sources would be appreciated.
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  #2  
Old 04-17-2015, 12:43 PM
RFSchaller RFSchaller is offline
 
Join Date: Oct 2010
Location: Phoenix, AZ
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I use the electronic Carb Mate from California Power Systems, but at the ROTAX course the instructor had a neat setup using a manifold pressure gage from a twin engine aircraft. He just adjusted the carbs to get the gage needles on top of each other.
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  #3  
Old 04-17-2015, 03:30 PM
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Jetguy Jetguy is offline
 
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Location: Texas, Fort Worth
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Two for the Carbmate. Keith drop me an email. I'm over at 16X west of Justin TX. I'd be happy to hook up and help you do the carb synch. John

Check out the videos here:
http://rotax-owner.com/en/
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Last edited by Jetguy : 04-17-2015 at 03:33 PM.
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  #4  
Old 04-18-2015, 05:47 AM
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Larry DeCamp Larry DeCamp is online now
 
Join Date: Apr 2010
Location: Clinton, Indiana
Posts: 530
Default Simple synchronizer

Remember the old days when we had MGB's and Honda 750's with four carbs? We used a manometer stick made with cheap Tygon and plastic or glass tubing.
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  #5  
Old 04-18-2015, 09:59 AM
Pilotman Pilotman is offline
 
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Thanks for the information!
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  #6  
Old 04-18-2015, 07:57 PM
Sink Sink is offline
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Location: Altha, FL.
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I was taught in school that the Carbmate and Syncromate were okay, but you an not diagnose with them and it is much harder to pick a carb you want to adjust. The analog gauge setup tells you which carb to adjust and by about how far. It can tell you if the ideal circuit is obstructed or if the carbs are so far out you need to adjust the cable length on the throttle arm. The electronic sync instruments can split a hair, but once you disconnect it and hook the carbs back up all the hair splitting is gone. Gauges are just so much faster.
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  #7  
Old 04-18-2015, 09:38 PM
rvbuilder2002 rvbuilder2002 is offline
 
Join Date: Jul 2005
Location: Hubbard Oregon
Posts: 7,059
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Quote:
Originally Posted by Sink View Post
I was taught in school that the Carbmate and Syncromate were okay, but you an not diagnose with them and it is much harder to pick a carb you want to adjust. The analog gauge setup tells you which carb to adjust and by about how far. It can tell you if the ideal circuit is obstructed or if the carbs are so far out you need to adjust the cable length on the throttle arm. The electronic sync instruments can split a hair, but once you disconnect it and hook the carbs back up all the hair splitting is gone. Gauges are just so much faster.
I agree for all the reasons mentioned.
In our shop we use the two column version of this.
http://www.carbtune.com
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  #8  
Old 04-18-2015, 09:40 PM
RFSchaller RFSchaller is offline
 
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Location: Phoenix, AZ
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Joe, if you have the mechanical synch correct the Carb Mate should work fine. My engine runs really smooth at and idle of 1800.

Rich
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  #9  
Old 06-18-2016, 04:03 PM
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Tony_T Tony_T is online now
 
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I have a Rotax 912 gauge set for sale on the classifieds:
http://www.vansairforce.com/communit...69&postcount=1
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RV-12 #202 -- Flying
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  #10  
Old 06-18-2016, 09:50 PM
Jim T Jim T is offline
 
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Location: Independence, OR
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Quote:
Originally Posted by Tony_T View Post
I have a Rotax 912 gauge set for sale on the classifieds:
http://www.vansairforce.com/communit...69&postcount=1
Tony, Your post and ad begs the question: "What did you upgrade to, that is a better setup"?

Jim
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