Today's Message Index:
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1. 02:32 AM - Looking for a Fuel Strainer Plug (Ira Saligman)
2. 08:14 AM - Re: B&C Alternator (Bitterlich, Mark G CIV Det Cherry Point, MALS-14 64E)
3. 09:12 AM - Re: Looking for a Fuel Strainer Plug (Kregg Victory)
Message 1
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| Subject: | Looking for a Fuel Strainer Plug |
Does anyone have a threaded Fuel Strainer plug for a Yak-50?
Thanks
Ira Saligman
isaligman@saligman.com
(610) 324-5500
Message 2
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That is absolutely correct. And if you have any doubt ... test them
UNDER LOAD, with at least 10 amps of draw or more and check the voltage
drop.
Mark
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Eric Wobschall
Sent: Tuesday, March 29, 2011 5:06 PM
Subject: Re: Yak-List: B&C Alternator
Cheap insurance, new batteries.
On Mar 29, 2011, at 3:58 PM, Bitterlich, Mark G CIV Det Cherry Point,
MALS-14 64E wrote:
Point, MALS-14 64E" <mark.bitterlich@navy.mil>
>
> I happen to really like B&C products, not only from their quality
> standpoint, but also the owner is just a super guy who is always
willing
> to help anyone with a problem. So, I tend to promote his products to
> some degree. I wanted to make clear that my experience prejudices me
> towards this company.
>
> Your message is correct in every way.
>
> The thing about the SK10 is that it must be used by someone who
realizes
> that they are sacrificing one thing to get another. The goal of the
> SK10 is to get a changing system with the lightest weight possible.
The
> sacrifice is that it can't be expected to replace a 100 amp DC
generator
> when it comes to current draw.
>
> The "good battery" issue is amazingly important. If you allow the
> batteries to degrade, it is very insidious and most people won't even
> notice it is happening, because as you said ... all the battery does
is
> really power the shower of sparks coil (booster coil) and then it is
> "not really used anymore".
>
> Well not so fast. :-)
>
> A depleted battery means... AGAIN as you said ... the SK10 will try to
> charge them. And this means that the amount of current generating
> capability to power OTHER THINGS is diminished. Pretty darn soon, the
> battery can no longer satisfy peak demands, and the SK10 will try to.
> It can't. What usually lets go in that situation is the voltage
> regulator pass transistor, and sometimes it shorts.
>
> When it shorts, you now have unregulated voltage coming out of the
SK10
> to the main electrical bus. At high RPM, your voltage will go WAY up,
> and the battery will now charge very hard until it boils every bit of
> electrolyte right out it (or them).
>
> Now your batteries are toast.
>
> WAIT, it gets better! Now you are hitting the avionics with
unregulated
> voltage higher than what is "good". Hopefully, the over-voltage
> protection will kick in and blow the circuit breaker. When it goes,
you
> lose ALL power in the aircraft... because remember, your batteries are
> now bad.
>
> So you reset the circuit breaker. Most people would. BAM, you now
have
> another over-voltage incursion. Keep doing that, and your avionics
are
> not going to like that at all.
>
> And.. most people will suspect they have an ALTERNATOR problem and not
> realize bad batteries caused ALL of this.
>
> The SK10 is meant for one thing... weight saving for competitive
> aerobatic use. At least that's my opinion. Other than that, the SK35
> or SK50 is the right choice.
>
> Just sayin.
>
> Mark Bitterlich
>
>
> -----Original Message-----
> From: owner-yak-list-server@matronics.com
> [mailto:owner-yak-list-server@matronics.com] On Behalf Of Eric
Wobschall
> Sent: Tuesday, March 29, 2011 2:43 PM
> To: yak-list@matronics.com
> Subject: Re: Yak-List: B&C Alternator
>
<eric@buffaloskyline.com>
>
> Makes sense, Mark...
>
> Without having done the calculations you did, I was thinking that it
> would have to be close, plus it it were charging a depleted battery,
> etc, and yes you're right, things running at 100% tend to not last. My
> later 52 came stock from Romania with gigantic VRLAs... never had a
> problem, even with the inverters and what have you.... but it also had
> the stock generator. Rick's SU-26M has one of the B&Cs and I converted
> that little green battery's lead-acid guts with a couple alarm
> batteries. Cheap, and worked for a couple of seasons before needing
> replacement. During start, it only needs the batteries for shower of
> sparks, but he does have the Dynon, comm radio and xpdr., and it seems
> to keep up with those. Daytime VFR only, so you're not taking that
much
> risk if things went flat, of course.
>
>
> On Mar 29, 2011, at 12:13 PM, Bitterlich, Mark G CIV Det Cherry Point,
> MALS-14 64E wrote:
>
> Point, MALS-14 64E" <mark.bitterlich@navy.mil>
>>
>> It is a tad on the low side Eric, but with 10 amps you get 280 watts,
>> which is enough to power what he has listed.
>>
>> The thing to keep in mind is the instant current demand versus the
>> average current demand. The transponder is the biggest issue here
> since
>> output on it can be as much as +53 dbm, or about 250 watts. Figure
>> about 50% efficiency and you are now up to 500 watts of peak demand.
>> However, the time the transmitter is on is very low (duty cycle in
the
>> single digit range). The radio is also a big current consumer when
> you
>> are transmitting anyway.
>>
>> Further, it is not really a wise choice to run the SK10 wide open
with
> a
>> 10 amp draw. I don't think it will last very long that way!
>>
>> Thus.... as long as you have a decent set of batteries in there, (as
> you
>> mentioned) this system will work. The batteries will provide the
> short
>> term current draws needed by the transponders and the radio, and all
>> will be good. I have personally seen this system work on pretty much
>> exactly what he has described. I have also seen a lot of bad things
>> happen if the owner does not stay on top of the battery condition.
>>
>> The same thing can happen with standard systems as well (battery
> failure
>> causing insidious problems), but not quite so quickly as it does with
> a
>> system running the SK10 and small batteries.
>>
>> Thus personally, I recommend the SK35 or SK50.
>>
>> Mark
>>
>>
>> -----Original Message-----
>> From: owner-yak-list-server@matronics.com
>> [mailto:owner-yak-list-server@matronics.com] On Behalf Of Eric
> Wobschall
>> Sent: Monday, March 28, 2011 4:26 PM
>> To: yak-list@matronics.com
>> Subject: Re: Yak-List: B&C Alternator
>>
> <eric@buffaloskyline.com>
>>
>> That sounds skimpy to me, depending on battery capacity.
>>
>>
>> On Mar 28, 2011, at 3:46 PM, adrian hale wrote:
>>
>>>
>>> Has anyone experience with the 10 amp alt? Our A/C has the russian
>> radio but all other avionics and instruments are US. It has the
small
>> Dynon Efis, and electronic tach and a transponder. will 10 amps keep
>> the bat up?
>>>
>>>
>>>
>>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>
>
>
>
>
>
>
>
>
>
>
Message 3
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| Subject: | Looking for a Fuel Strainer Plug |
I have the whole assembly, if you can't find the plug?
Kregg
Victory Aero LLC
2502 John Montgomery Dr.
San Jose, CA 95148
408-836-5122
www.balancemyprop.com
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Ira Saligman
Sent: Wednesday, March 30, 2011 2:03 AM
Subject: Yak-List: Looking for a Fuel Strainer Plug
Does anyone have a threaded Fuel Strainer plug for a Yak-50?
Thanks
Ira Saligman
isaligman@saligman.com
(610) 324-5500
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