Today's Message Index:
----------------------
1. 05:09 AM - Re: CarbMate (Roger Lee)
2. 08:56 AM - Re: CarbMate (Robert Borger)
3. 09:59 AM - Re: CarbMate (JohnF)
4. 01:17 PM - Re: CarbMate (Roger Lee)
5. 02:37 PM - Re: Re: CarbMate (JohnF)
Message 1
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Hi John,
This is one of my dislikes about electronic devices. I still prefer gauges. You
can't diagnose with electronic devices. I have used them, but always gone back
to gauge. The easiest way to check and see is to move a carb throttle arm and
watch the indicator. If you do it to both one at a time then you can watch the
indicator move to where you want it and then know how far and which carb to
adjust. I think gauges are faster.
--------
Roger Lee
Tucson, Az.
Light Sport Repairman - Maintenance Rated
Rotax Repair Center - Heavy Maint. Rated
Home 520-574-1080 TRY HOME FIRST
Cell 520-349-7056
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=416318#416318
Message 2
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Hi John,
I use a balancing tool similar to the Carb Mate to do my synchronizing.
First, only adjust one side, never both sides. All you are trying to do is get
one side to match the other. If you try to adjust both sides youll be chasing
it all day long.
Pick a side to adjust and make a small adjustment on the ferrule, really doesnt
matter which way, all you want to see is which way the Carb Mate changes. If
it improves, that's the way you want to adjust to balance. If the Carb Mate
goes the wrong way, you want to adjust the ferrule in the other direction. Then
continue to make adjustments till you get the Carb Mate centered at highest
resolution.
Its really quite easy once you get the hang of it.
Rotax-Owner.com has a good video review of the Carb Mate which includes a demonstration
on its use. You should check it out. If you are a member of Rotax-Owner.com
there are other excellent, detailed, videos available on carb balancing
the 912/914. If you arent a member of Rotax-Owner.com I highly recommend joining
to gain access to all their other videos and to their informational e-mailing.
Blue skies & tailwinds,
Bob Borger
Europa XS Tri, Rotax 914, Airmaster C/S Prop (50 hrs).
Little Toot Sport Biplane, Lycoming Thunderbolt AEIO-320 EXP
3705 Lynchburg Dr.
Corinth, TX 76208-5331
Cel: 817-992-1117
rlborger@mac.com
On Dec 28, 2013, at 3:40 PM, JohnF <n29cx@ridgeviewtel.us> wrote:
I used a Carb Mate synchronizer once and found I was fumbling around a lot to get
the carbs balanced.
If, for examle, the LED light is offset to the right, do you loosen , or tighten
the cable feed to that right side carb? Or do either to the left side?
Instructions didn't provide any clues.
Message 3
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Thank you, Bob, for your iinformation. I appreciate it. I am in an RV-12
with 190 hours on it now...many minor items have come up but so far nothing
major which I hope continues because if you need to get at the starter or
other major things the entire engine would have to be pulled...a real
pain...the RV-12 with the Rotax 912uls is pretty crowded.
Again, thank you
John
----- Original Message -----
From: "Robert Borger" <rlborger@mac.com>
<europa-list@matronics.com>
Sent: Sunday, December 29, 2013 9:55 AM
Subject: Re: RotaxEngines-List: CarbMate
Hi John,
I use a balancing tool similar to the Carb Mate to do my synchronizing.
First, only adjust one side, never both sides. All you are trying to do is
get one side to match the other. If you try to adjust both sides youll be
chasing it all day long.
Pick a side to adjust and make a small adjustment on the ferrule, really
doesnt matter which way, all you want to see is which way the Carb Mate
changes. If it improves, that's the way you want to adjust to balance. If
the Carb Mate goes the wrong way, you want to adjust the ferrule in the
other direction. Then continue to make adjustments till you get the Carb
Mate centered at highest resolution.
Its really quite easy once you get the hang of it.
Rotax-Owner.com has a good video review of the Carb Mate which includes a
demonstration on its use. You should check it out. If you are a member of
Rotax-Owner.com there are other excellent, detailed, videos available on
carb balancing the 912/914. If you arent a member of Rotax-Owner.com I
highly recommend joining to gain access to all their other videos and to
their informational e-mailing.
Blue skies & tailwinds,
Bob Borger
Europa XS Tri, Rotax 914, Airmaster C/S Prop (50 hrs).
Little Toot Sport Biplane, Lycoming Thunderbolt AEIO-320 EXP
3705 Lynchburg Dr.
Corinth, TX 76208-5331
Cel: 817-992-1117
rlborger@mac.com
On Dec 28, 2013, at 3:40 PM, JohnF <n29cx@ridgeviewtel.us> wrote:
I used a Carb Mate synchronizer once and found I was fumbling around a lot
to get the carbs balanced.
If, for examle, the LED light is offset to the right, do you loosen , or
tighten the cable feed to that right side carb? Or do either to the left
side?
Instructions didn't provide any clues.
Message 4
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The problem with doing it with a blind adjustment to just make them match is if
you screw one out that increases one carb's rpm then it usually will be too far
out to set the idle. As a general rule you want to adjust the carb that is
getting a little more fuel/air and pull that cable back to retard it some. Then
when you go to idle you will still have adjustment.
The gauges will tell you exactly which carb to adjust and by how much and how far
off they are. The gauge will tell you before you spend a lot of time trying
to make an adjustment if the cable lengths are close enough or too far apart
to make an adjustment to get them synced and they will tell you if the idle circuit
is clogged. The carbmate won't tell you any of that and you may spend a
1-3 hours working on it when using a set of gauge would have told you those things
in seconds to a couple of minutes.
--------
Roger Lee
Tucson, Az.
Light Sport Repairman - Maintenance Rated
Rotax Repair Center - Heavy Maint. Rated
Home 520-574-1080 TRY HOME FIRST
Cell 520-349-7056
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=416344#416344
Message 5
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Thank you, Roger. I think before my next condition inspection I want to get
gauges...I noticed you recommend liquid-filled gauges that dampen the
movement, which makes sense.
Would you be kind enough to recommend model/brand of gauges you use.
I also plan to purchase a dynamic prop balancer to use during the condtion
inspection, so before balancing the prop it seems important to get the
carbs right. Right now I am debating between the Dyna Vibe and the ACES
unit...both seem like they would do the job, with the ACES a suggested
weight is provided, but otherwise they seem about the same. The ACES unit
uses the formula that I could do myself. They cost the same, so its a toss
up but the Dyna Vibe seems a tad easier to use.
Again, thanks for your help. I really appreciate it.
John
----- Original Message -----
From: "Roger Lee" <ssadiver1@yahoo.com>
Sent: Sunday, December 29, 2013 2:16 PM
Subject: RotaxEngines-List: Re: CarbMate
>
> The problem with doing it with a blind adjustment to just make them match
> is if you screw one out that increases one carb's rpm then it usually will
> be too far out to set the idle. As a general rule you want to adjust the
> carb that is getting a little more fuel/air and pull that cable back to
> retard it some. Then when you go to idle you will still have adjustment.
> The gauges will tell you exactly which carb to adjust and by how much and
> how far off they are. The gauge will tell you before you spend a lot of
> time trying to make an adjustment if the cable lengths are close enough or
> too far apart to make an adjustment to get them synced and they will tell
> you if the idle circuit is clogged. The carbmate won't tell you any of
> that and you may spend a 1-3 hours working on it when using a set of gauge
> would have told you those things in seconds to a couple of minutes.
>
> --------
> Roger Lee
> Tucson, Az.
> Light Sport Repairman - Maintenance Rated
> Rotax Repair Center - Heavy Maint. Rated
> Home 520-574-1080 TRY HOME FIRST
> Cell 520-349-7056
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=416344#416344
>
>
>
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