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Have the 912UL.
There are a whole range of instruments and kits for carb sync varying in price from as little as about $30 or so IIRR to $250.
http://www.lockwood.aero/p-3300-syncrhomate-with-rotax-accessory-kit.aspx 
Is the $250 kit.
This one
http://www.cps-parts.com/catalog/eppages/carbMate.php
Is about $100..... But it seems to imply you NEED a specialized expensive adapter kit such as
http://www.lockwood.aero/p-3302-rotax-accessory-kit-includes-adaptor-nylon-case-and-holster.aspx
For $90 to use it on Rotax .

The electronic sync instruments Carbmate and Syncromate seem to be very well reviewed by buyers for easy if use , accuracy etc.
I guess I'm willing to spring for $100 or more for ease of use and accuracy... But start to get uneasy as approaching $150 and $250...unless it,s really worth the money to time, reliability or ease of use .

So have a couple of question is anyone can answer:

How much harder are the somewhat cheaper vacuum gauge type tool to use?
(I'm not the village idiot or all thumbs, but have never synced carbs before.)
What's the difference between the Carbmate and syncmate instruments.... both of which cost about the same once you add in the adaptor kit, and both of which are sold at the major Rotax vendors?

Do I really need that adaptor kit ($90 seems steep for a couple of pieces of hose and two thread adapters). Or is that just for the folks with the two cycle Rotax?

Any other suggestions for a solid not too difficult to use sync tool down below $150 for all parts needed to hook up to a 912?
All replies appreciated.
Al
  • Re: Suggestion for, & question on carb sync tool & kit

    by » 11 years ago


    Al,

    I use the gauge type carb sync kit from lockwood part # TL912CSK, $89.50. It has everything you need, nothing extra to buy. Very easy to hook up to the engine. All you do is pull the short rubber hose on the balance tube off of the manifold nipple, stick the hoses from the gauges on the nipple and the balance tube where you pulled them apart, and you're in business. Accuracy is just as good, if not better than the electronic gauges.

    Bill.

    Thank you said by: Al C

  • Re: Suggestion for, & question on carb sync tool & kit

    by » 11 years ago


    vacuum gauges are a better way to go. You can't diagnose with the electronic ones like the gauges, they are more expensive and take longer to work with. gauges are faster and you can literally
    see what your doing at the time of adjustment and if a carb has any issues it shows right up.



    TheAnatomyofaCarbSync.pdf (You do not have access to download this file.)

    Roger Lee
    LSRM-A & Rotax Instructor & Rotax IRC
    Tucson, AZ Ryan Airfield (KRYN)
    520-349-7056 Cell


    Thank you said by: Al C

  • Re: Suggestion for, & question on carb sync tool & kit

    by » 11 years ago


    Thanks Roger ... And Bill,

    With you having years of carb sync experience, and me close to zero, your preference for the gauge type sync carries a lot of weight with me. Will likely go that route

    But just curious if you happen know:
    The electronic ones must have SOME points in their favor or folks (including one very experienced and respected Rotax guy I know) would be paying twice as much to use them.
    Any idea what the maker or users of those would claim is the upside of the electronic sync instruments?

    Al

  • Re: Suggestion for, & question on carb sync tool & kit

    by » 11 years ago


    Electronic sounds cool and gets hyped. It's newer technology than plain old vacuum gauges.
    BUT newer isn't always better.
    They can split a hair for the sync, but as soon as you remove it and hook the cross over tube back up that hair splitting is gone. One effects the other and it isn't hair splitting accuracy any more.
    Maybe I'm old school, but I have tried and own the electronics. They now sit in storage because I'm much faster, can see which carb I want to adjust and can diagnose far beyond what the electronic ones can do. I can look at the gauges and tell if they are sync-able like they are set up or if a cable needs adjustment at its attachment point. (wide needle spread on the gauge) I can tell if an idle jet is clogged or a main jet, or which carb I want to adjust over the other, ect...
    The electronic ones can't help much in these areas and it is slower to work with.

    Roger Lee
    LSRM-A & Rotax Instructor & Rotax IRC
    Tucson, AZ Ryan Airfield (KRYN)
    520-349-7056 Cell


  • Re: Suggestion for, & question on carb sync tool & kit

    by » 11 years ago


    Al,

    The electronic devices are comparing vacuum. period. They have advertised bells and whistles, much like the extras on a new TV that no one uses. They are comparing vacuums against a common point whereas the gauges are comparing two vacuums against each other. The result is the same. One advantage they claim which is valid is that you don't have to worry about the two gauges reading differently. I check my gauges occasionally by doing a carb sync, reversing the gauge hoses and see if the gauges read the same. Takes about 20 seconds to reverse the hoses. They have always been correct. The bourden tube device in the gauges which makes them work just never gets out of whack unless you subject it to very rough handling.

    You can make your own if you like. Pick up two vacuum gauges from EBAY or your local auto supply store, (liquid filled preferably) Two needle valves, a few fittings and some hose. In the end though, it will probably cost you as much as a set already made up.

    Bill.

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