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Battery discharge: was White Paper on Russian Generator Syst

 
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Rob Rowe



Joined: 10 Jan 2006
Posts: 124
Location: Berkshire, UK

PostPosted: Wed Feb 28, 2007 5:30 pm    Post subject: Battery discharge: was White Paper on Russian Generator Syst Reply with quote

Dennis, Jorgen

Thanks ... spoke to a couple of other UK based owners today ... one owns a -52 & could not comment (had not left the master down yet), the other a owns a -50 and had discharged the battery in this manner.

So no obvious pattern here (if there is one anyway) ... so would like to ask the Yak-List if anyone else has experienced this issue to post a one-line message giving their aircraft model & year of manufacture please.

If there are no others then I guess it's just coincidental.

Thanks, Rob

Quote:
Jorgen wrote:
Ditto - I had someone else fly my aerie and noted the master had been left full down - no problem.


Quote:
Dennis wrote:
Rob,
As you have said, schematically it is virtually impossible for that to
happen. In fact, on my personal airplane (52) I have left the
battery/external power switch down for days at a time and did not have any discharging of the aircraft battery. So whatever is causing it is not
reflected in the electrical schematics.
Dennis


Quote:
Rob wrote:
So that just leaves the other YAK DC power mystery ... why does the battery discharge if the master switch is (mistakenly) left in the external power position (down)?

According to the schematics the battery should be isolated & nothing should form a load ... but something does, as this occurs on -52s & I think on -50s too. Don't know if the CJ's have the same problem.

I'll get my coat!

Rob R


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viperdoc(at)mindspring.co
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PostPosted: Wed Feb 28, 2007 6:41 pm    Post subject: Battery discharge: was White Paper on Russian Generator Syst Reply with quote

Rob,
YAK52/50 have left the switch down on the 52 without discharge. Have not
done that on the 50, yet.
Doc
Quote:
[Original Message]
From: Rob Rowe <yak-list(at)robrowe.plus.com>
To: <yak-list(at)matronics.com>
Date: 2/28/2007 7:37:12 PM
Subject: Battery discharge: was White Paper on Russian
Generator Syst

Quote:



Dennis, Jorgen

Thanks ... spoke to a couple of other UK based owners today ... one owns
a -52 & could not comment (had not left the master down yet), the other a

owns a -50 and had discharged the battery in this manner.
Quote:

So no obvious pattern here (if there is one anyway) ... so would like to
ask the Yak-List if anyone else has experienced this issue to post a

one-line message giving their aircraft model & year of manufacture please.
Quote:

If there are no others then I guess it's just coincidental.

Thanks, Rob
> Jorgen wrote:
> Ditto - I had someone else fly my aerie and noted the master had been
left full down - no problem.

Quote:

> Dennis wrote:
> Rob,
> As you have said, schematically it is virtually impossible for that to
> happen. In fact, on my personal airplane (52) I have left the
> battery/external power switch down for days at a time and did not have
any discharging of the aircraft battery. So whatever is causing it is not

Quote:
> reflected in the electrical schematics.
> Dennis

> Rob wrote:
> So that just leaves the other YAK DC power mystery ... why does the
battery discharge if the master switch is (mistakenly) left in the external

power position (down)?
Quote:
>
> According to the schematics the battery should be isolated & nothing
should form a load ... but something does, as this occurs on -52s & I think

on -50s too. Don't know if the CJ's have the same problem.
Quote:
>
> I'll get my coat!
>
> Rob R

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http://forums.matronics.com/viewtopic.php?p=98034#98034




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windsorsedge(at)ozemail.c
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PostPosted: Wed Feb 28, 2007 8:14 pm    Post subject: Battery discharge: was White Paper on Russian Generator Syst Reply with quote

Guys I leave all the switches down after shutdown and have never had a
problem
Yak 52 1981 build

Tim & Jessie Windsor

Windsors Edge Vineyard
Windsors Edge Cottages
Top Red War Birds

1039 McDonalds Rd POKOLBIN NSW 2320
T/F: 02 4998 7737
E: windsorsedge(at)ozemail.com.au

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jorgen.nielsen(at)mweb.co
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PostPosted: Thu Mar 01, 2007 10:51 am    Post subject: Battery discharge: was White Paper on Russian Generator Syst Reply with quote

Jorgen Yak 52, 1994, no discharge

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