Today's Message Index:
----------------------
1. 05:33 AM - Carb Balance (Rich L)
2. 06:08 AM - Re: Carb Balance (Bob Borger)
3. 08:02 AM - Re: Carb Balance (Roger Lee)
4. 08:48 AM - BRS Chute for sale (Matt Tucciarone)
5. 02:35 PM - For Sale (Jeffrey A Beachy)
6. 08:36 PM - Re: Carb Balance (Rich L)
Message 1
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This question is probably for Roger but some others may be interested. Do I have
to go through the whole mechanical and dynamic balance each time I balance
the carbs on my 912uls or can I just do the dynamic step. Seems after once doing
the mechanical setup, you shouldn't have to do it again.
thanks
Rich in
North Idaho
Kitfox SS7
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=267209#267209
Message 2
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| Subject: | Re: Carb Balance |
Rich,
You probably should check the mechanical setup at both idle and full throttle to
ensure both carbs reach the stops and that correct idle is set. Only adjust
if necessary prior to dynamic balance.
Other folks please chime in...
Bob Borger
Europa XS Monowheel, ROTAX 914 with intercooler & Airmaster C/S prop.
On Friday, October 09, 2009, at 07:32AM, "Rich L" <kitfox812@gmail.com> wrote:
>
>This question is probably for Roger but some others may be interested. Do I have
to go through the whole mechanical and dynamic balance each time I balance
the carbs on my 912uls or can I just do the dynamic step. Seems after once doing
the mechanical setup, you shouldn't have to do it again.
>
>thanks
>Rich in
>North Idaho
> Kitfox SS7
>
>
>Read this topic online here:
>
>http://forums.matronics.com/viewtopic.php?p=267209#267209
>
>
Message 3
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| Subject: | Re: Carb Balance |
Hi Rich,
You really should do both a mechanical and then a pneumatic each time. The reason
behind this is things can change a little like cable length from newer cables
relaxing and a slight stretch to ends slipping some in the cable locks. If
you hook up your gauges and the carbs are close to being together then in reality
it would most likely be ok, but I will tell you Rotax wants the mechanical
balance done each time before the pneumatic. Carbs should be balanced every 100
hrs and at the annual condition inspection. I have never seen a set of carbs
balanced when I hook up a set of gauges and they never will because of normal
wear & tear on tolerances within the carb and on the linkages outside. Once
you have done it a time or two then the carb balance procedure gets easier. This
is one the single most important things you can do for you engine's health.
The cross over tube can only correct so much then the right side of the engine
will try to run at a different rpm from the left if the balance is out too far.
This makes one half the engine working against the other and causes vibration
and wear and tear on the engine internals and gearbox. A gauge set does not
have to be expensive and you can make your own if you want. I do lots of 100
hr and annual inspections. When I do the 100 hr. I just reset the annual date
so someone doesn't have to do two or more inspections a year depending of course
on how many hours a year they fly. If they fly 200-300 hours a year then extra
inspections are needed. Many SLSA have to do regular 100 hr. inspections
required by the Mfg. and that experimental's aren't really required to, but Rotax
wants you to do 100 hr. inspections regardless of what type of plane you fly.
If you skip maint. times then you only hurt yourself and may set yourself
up for later expenses for maint issues. With out the maint checks how can you
guarantee your plane is in good condition and that something might fail or something
is coming loose? I know even with the inspection it is not 100%, but it's
a whole!
lot bet
ter than no inspection or regular service. I know a few backyard mechanics with
their planes that think so long as it doesn't quit and starts it is ok to fly!
The biggest problem that Rotax engines have whether 2 stroke or 4 stroke are the
owners. Either no maint or trying to change something.
--------
Roger Lee
Tucson, Az.
Light Sport Repairman - Maintenance Rated
Rotax Service Center
520-574-1080
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=267224#267224
Message 4
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| Subject: | BRS Chute for sale |
Just thought I might mention this before I put I on barnstormers.
I have a BRS 1200 for sale. It has been on my Aventura II since I bought it
in 2003. The plane has been hangered all it's life so thee chute looks good.
The chute is 9 years old. I am asking $1,500 for it or best offer.
Matt
Message 5
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Aeroshell Sport Plus 4 oil for sale. Use in 912 series engines.
$82.00 per case, including shipping to the lower 48 states.
I have three cases for sale.
Also, genuine Rotax oil filters for 912 series
Rotax part number 825-701 (Black, newest style)
$14.00 each, including shipping to the lower 48 states
I have seven filters available.
Jeff Beachy
Ohio
Zenith CH701
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Message 6
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| Subject: | Re: Carb Balance |
The engine was running like a top but I had 130 hours since changing plugs and
carb balance and it was annual anyway. I just bought a Carbmate and watched the
video on ROAN so I was ready. I changed all the plugs and hooked up the Carbmate
and it showed the carbs a little out of balance till the engine wormed
up, then it was in balance without touching anything. I put it to full sense
and it still showed in balance. I double checked the Carbmate connections. I
can't see detuning to retune when its ok.????????
Rich
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