---------------------------------------------------------- RotaxEngines-List Digest Archive --- Total Messages Posted Fri 04/15/11: 3 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 07:15 AM - Re: Understanding the Carbmate (lucien) 2. 07:17 AM - Re: Understanding the Carbmate (lucien) 3. 10:56 AM - EGT/CHT combination guage (LynetteandSteve) ________________________________ Message 1 _____________________________________ Time: 07:15:36 AM PST US Subject: RotaxEngines-List: Re: Understanding the Carbmate From: "lucien" kgderosier(at)gmail.com wrote: > Isn't the idea of syncing up mean to match one to the other??? Wouldn't you just adjust 1 carb to sync to the other??!!! > > Gale D. > RANS S6S > Pretty much what Roger said. Yes the goal is to balance the throttling between the two carbs, but actually getting there can be quite involved. If you only adjust one you may or may not end up where you want - they may be balanced, but both are too far open or closed for an acceptable idle speed or the throttles don't open all the way or they may try to open too far and pull against the stops, etc..... To be honest, the way I did mine when I had them overhauled a while back: - reattach to the bails by eye. Full throttle looks even, idle looks even, back out the idle screws so they don't touch the arms. - attach carbmate - start the sucker up - see where Im at and go from there... ;) That was literally easier than doing all the measuring and fiddling before hand with the feeler guage, etc. At first startup, sure enough it was pegged with the LED one one side. A couple adjustments later on one carb I had figured out which direction I needed to go to achieve a balance. Then, once they were balanced, I had to adjust both to get the idle speed where it was supposed to be. That done, I adjusted the idle screws to just touch the arms at idle. Recheck in the plane, boom, I was done. Took about an hour and it ended up virtually perfect. So to me, that's the easiest way. Just stick em on there, set roughly equal by eye, attach the carbmate and fire that baby up. You have to figure out the direction and then adjust for correct idle anyway so that's the easiest method in the end.... LS -------- LS Titan II SS Read this topic online here: http://forums.matronics.com/viewtopic.php?p=337003#337003 ________________________________ Message 2 _____________________________________ Time: 07:17:20 AM PST US Subject: RotaxEngines-List: Re: Understanding the Carbmate From: "lucien" lucien wrote: > > kgderosier(at)gmail.com wrote: > > Isn't the idea of syncing up mean to match one to the other??? Wouldn't you just adjust 1 carb to sync to the other??!!! > > > > Gale D. > > RANS S6S > > > > > Pretty much what Roger said. Yes the goal is to balance the throttling between the two carbs, but actually getting there can be quite involved. If you only adjust one you may or may not end up where you want - they may be balanced, but both are too far open or closed for an acceptable idle speed or the throttles don't open all the way or they may try to open too far and pull against the stops, etc..... > > To be honest, the way I did mine when I had them overhauled a while back: > - reattach to the bails by eye. Full throttle looks even, idle looks even, back out the idle screws so they don't touch the arms. > - attach carbmate > - start the sucker up > - see where Im at and go from there... > > ;) > > That was literally easier than doing all the measuring and fiddling before hand with the feeler guage, etc. At first startup, sure enough it was pegged with the LED one one side and engine was pretty rough. A couple adjustments later on one carb I had figured out which direction I needed to go to achieve a balance. Then, once they were balanced, I had to adjust both to get the idle speed where it was supposed to be. That done, I adjusted the idle screws to just touch the arms at idle. Recheck in the plane, boom, I was done. > > Took about an hour and it ended up virtually perfect. > > So to me, that's the easiest way. Just stick em on there, set roughly equal by eye, attach the carbmate and fire that baby up. You have to figure out the direction and then adjust for correct idle anyway so that's the easiest method in the end.... > > LS -------- LS Titan II SS Read this topic online here: http://forums.matronics.com/viewtopic.php?p=337005#337005 ________________________________ Message 3 _____________________________________ Time: 10:56:45 AM PST US From: "LynetteandSteve" Subject: RotaxEngines-List: EGT/CHT combination guage I am looking for another hole to mount an additional flight instrument in a Kolb Firefly panel. I=99m considering removing the dual EGT gauge and the dual CHT gauge, and replacing with a combination EGT/CHT gauge. Am I giving up more than I really should in terms of Rotax 447 engine operation? ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message rotaxengines-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/RotaxEngines-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/rotaxengines-list Browse Digests http://www.matronics.com/digest/rotaxengines-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.