Had powerfail  in club dg1000 in state comp.

Used wintervario to complete task



Sent from my iPad

> On 27 Apr 2015, at 20:07, aus-soaring-requ...@lists.internode.on.net wrote:
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> Today's Topics:
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>   1. Re: varios, redundancy (James Dutschke)
>   2. Re: varios, redundancy (pam)
> 
> 
> ----------------------------------------------------------------------
> 
> Message: 1
> Date: Mon, 27 Apr 2015 19:55:08 +1000
> From: James Dutschke <james.m.dutsc...@gmail.com>
> Subject: Re: [Aus-soaring] varios, redundancy
> To: "Discussion of issues relating to Soaring in Australia."
>    <aus-soaring@lists.internode.on.net>
> Message-ID: <1d2e87b2-87ae-4d90-8f72-e3ab130dc...@gmail.com>
> Content-Type: text/plain; charset="utf-8"
> 
> Straw poll.
> 
> Has anyone, had a vario failure. 
> 
> Sent from my iPhone
> 
>> On 27 Apr 2015, at 19:14, Nick Gilbert <cirru...@gmail.com> wrote:
>> 
>> Surely a backup electric vario is a more useful backup than a mechanical? 
>> With its own emergency battery you get a backup audio and averager as well 
>> as the needle. With all the stress that goes with a power failure having to 
>> stare at the instrument would make things worse. 
>> 
>> Nick
>> 
>> 
>>> On 27 Apr 2015, at 5:41 pm, Peter Champness <plchampn...@gmail.com> wrote:
>>> 
>>> I have just been choosing instruments for a new glider.
>>> 
>>> I did wonder for a moment after reading Adam's post whether I had wasted 
>>> money on the Winter Vario.
>>> 
>>> However I agree with Mike.  A set on basic instruments (redundancy) is good 
>>> insurance.  In my case I have something in case of electrical failure.
>>> 
>>> No doubt thermal can be found and used without any instruments, but it 
>>> difficult.
>>> 
>>>> On Mon, Apr 27, 2015 at 5:32 PM, Mike Borgelt 
>>>> <mborg...@borgeltinstruments.com> wrote:
>>>> At 08:14 AM 27/04/2015, you wrote:
>>>> 
>>>> There???s no need for a winter backup now
>>>> 
>>>> Maybe not a Winter vario as backup but you should have a backup. Adam's 
>>>> advice is probably the silliest thing I've read in a long time.
>>>> 
>>>> The only time you may reasonably want to rely on one vario is in a 
>>>> motorglider if you are prepared to start the motor and fly home if the 
>>>> single vario fails.
>>>> 
>>>> Too bad if you are half way round a 500km triangle and set to win the 
>>>> Nationals if you do reasonably this day.
>>>> 
>>>> For the paleo engineless gliders you are likely to risk an outlanding with 
>>>> its attendant hazards. Pretty stupid to risk breaking your glider or 
>>>> yourself over lack of a backup.
>>>> 
>>>> If you are serious about competition you should be equipped to cope with 
>>>> single failures of equipment. Most people carry two flight recorders for 
>>>> good reason.
>>>> 
>>>> A main navigation system and some reasonable backup is also necessary. 
>>>> Hint: fly with the backups working. The time to find out they have failed 
>>>> is NOT when you've had another failure.
>>>> 
>>>> The backup vario may also have a different speed of response and  will 
>>>> likely just display TE vario. Your primary should be showing netto 
>>>> (airmass) or relative netto ( airmass offset down by the sink rate in 
>>>> circling flight - this means it always shows the rate of climb you would 
>>>> get if you slowed down and circled, no matter your current airspeed). The 
>>>> two varios may show slightly different information without changing modes 
>>>> which can be useful.
>>>> 
>>>> We've all had even modern electronic equipment fail. Phones, PC's GPS , 
>>>> etc etc. It is pretty good nowadays but anyone doing what Adam says is 
>>>> tempting fate, Murphy's Law and what a physics teacher of mine called "the 
>>>> innate cussedness of inanimate matter".
>>>> 
>>>> When you decide to use a backup you might like to consider that the Winter 
>>>> doesn't have an audio or an averager. Do you really want to be sharing 
>>>> thermals with other gliders without an audio? If flying cross country you 
>>>> would find you would miss the averager.
>>>> 
>>>> If you have a backup electronic vario it should have its own independent 
>>>> backup power supply. While a glider electrical system can be fused 
>>>> properly so that the radio for example developing an internal short 
>>>> doesn't take out the main battery fuse (and if everything dies because of 
>>>> this or similar , are you going to simply flip the switch to battery 2 and 
>>>> take out *its* fuse also?) I suspect many aren't.
>>>> 
>>>> If you decide to join the 21st century for your backup vario get in touch 
>>>> and I'll sell you something you'll be happy to fly with when you need it. 
>>>> 
>>>> Mike
>>>> 
>>>> 
>>>> 
>>>> 
>>>> 
>>>> 
>>>> 
>>>> 
>>>>> ____________________________________
>>>>> Aus-soaring mailing list
>>>>> Aus-soaring@lists.internode.on.net
>>>>> To check or change subscription details, visit:
>>>>> http://lists.internode.on.net/mailman/listinfo/aus-soaring
>>>> Borgelt Instruments - design & manufacture of quality soaring 
>>>> instrumentation since 1978
>>>> www.borgeltinstruments.com
>>>> tel:   07 4635 5784     overseas: int+61-7-4635 5784
>>>> mob: 042835 5784                 :  int+61-42835 5784
>>>> P O Box 4607, Toowoomba East, QLD 4350, Australia
>>>> 
>>>> 
>>>> _______________________________________________
>>>> Aus-soaring mailing list
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>>>> http://lists.internode.on.net/mailman/listinfo/aus-soaring
>>> 
>>> _______________________________________________
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>> _______________________________________________
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> Message: 2
> Date: Mon, 27 Apr 2015 20:07:48 +1000
> From: "pam" <p...@kurstjens.com>
> Subject: Re: [Aus-soaring] varios, redundancy
> To: "'Discussion of issues relating to Soaring in Australia.'"
>    <aus-soaring@lists.internode.on.net>
> Message-ID: <003201d080d2$03e9b600$0bbd2200$@kurstjens.com>
> Content-Type: text/plain; charset="utf-8"
> 
> YES in the Nationals. It felt like the wings had fallen off. I had no 
> backup?..
> 
> 
> 
> From: aus-soaring-boun...@lists.internode.on.net 
> [mailto:aus-soaring-boun...@lists.internode.on.net] On Behalf Of James 
> Dutschke
> Sent: Monday, 27 April 2015 7:55 PM
> To: Discussion of issues relating to Soaring in Australia.
> Subject: Re: [Aus-soaring] varios, redundancy
> 
> 
> 
> Straw poll.
> 
> 
> 
> Has anyone, had a vario failure. 
> 
> 
> Sent from my iPhone
> 
> 
> On 27 Apr 2015, at 19:14, Nick Gilbert <cirru...@gmail.com 
> <mailto:cirru...@gmail.com> > wrote:
> 
> Surely a backup electric vario is a more useful backup than a mechanical? 
> With its own emergency battery you get a backup audio and averager as well as 
> the needle. With all the stress that goes with a power failure having to 
> stare at the instrument would make things worse. 
> 
> 
> 
> Nick
> 
> 
> 
> 
> On 27 Apr 2015, at 5:41 pm, Peter Champness <plchampn...@gmail.com 
> <mailto:plchampn...@gmail.com> > wrote:
> 
> I have just been choosing instruments for a new glider.
> 
> 
> 
> I did wonder for a moment after reading Adam's post whether I had wasted 
> money on the Winter Vario.
> 
> 
> 
> However I agree with Mike.  A set on basic instruments (redundancy) is good 
> insurance.  In my case I have something in case of electrical failure.
> 
> 
> 
> No doubt thermal can be found and used without any instruments, but it 
> difficult.
> 
> 
> 
> On Mon, Apr 27, 2015 at 5:32 PM, Mike Borgelt 
> <mborg...@borgeltinstruments.com <mailto:mborg...@borgeltinstruments.com> > 
> wrote:
> 
> At 08:14 AM 27/04/2015, you wrote:
> 
> There???s no need for a winter backup now
> 
> Maybe not a Winter vario as backup but you should have a backup. Adam's 
> advice is probably the silliest thing I've read in a long time.
> 
> The only time you may reasonably want to rely on one vario is in a 
> motorglider if you are prepared to start the motor and fly home if the single 
> vario fails.
> 
> Too bad if you are half way round a 500km triangle and set to win the 
> Nationals if you do reasonably this day.
> 
> For the paleo engineless gliders you are likely to risk an outlanding with 
> its attendant hazards. Pretty stupid to risk breaking your glider or yourself 
> over lack of a backup.
> 
> If you are serious about competition you should be equipped to cope with 
> single failures of equipment. Most people carry two flight recorders for good 
> reason.
> 
> A main navigation system and some reasonable backup is also necessary. Hint: 
> fly with the backups working. The time to find out they have failed is NOT 
> when you've had another failure.
> 
> The backup vario may also have a different speed of response and  will likely 
> just display TE vario. Your primary should be showing netto (airmass) or 
> relative netto ( airmass offset down by the sink rate in circling flight - 
> this means it always shows the rate of climb you would get if you slowed down 
> and circled, no matter your current airspeed). The two varios may show 
> slightly different information without changing modes which can be useful.
> 
> We've all had even modern electronic equipment fail. Phones, PC's GPS , etc 
> etc. It is pretty good nowadays but anyone doing what Adam says is tempting 
> fate, Murphy's Law and what a physics teacher of mine called "the innate 
> cussedness of inanimate matter".
> 
> When you decide to use a backup you might like to consider that the Winter 
> doesn't have an audio or an averager. Do you really want to be sharing 
> thermals with other gliders without an audio? If flying cross country you 
> would find you would miss the averager.
> 
> If you have a backup electronic vario it should have its own independent 
> backup power supply. While a glider electrical system can be fused properly 
> so that the radio for example developing an internal short doesn't take out 
> the main battery fuse (and if everything dies because of this or similar , 
> are you going to simply flip the switch to battery 2 and take out *its* fuse 
> also?) I suspect many aren't.
> 
> If you decide to join the 21st century for your backup vario get in touch and 
> I'll sell you something you'll be happy to fly with when you need it. 
> 
> Mike
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> ____________________________________
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> 
> Borgelt Instruments - design & manufacture of quality soaring instrumentation 
> since 1978
> www.borgeltinstruments.com <http://www.borgeltinstruments.com/> 
> tel:   07 4635 5784     overseas: int+61-7-4635 5784
> mob: 042835 5784                 :  int+61-42835 5784
> P O Box 4607, Toowoomba East, QLD 4350, Australia 
> 
> 
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