302 vs clearnav vario with XCSoar

[Ramy[_2_]]

I am considering replacing my 302 with clearnav vario.
My questions:
1 - I am aware clearnav is not a supported option for XCSoar, but giving that they suppose to implement the same 302 protocol, will it work the same as 302 when using the XCSoar 302 driver? In particular I am interested in the 302 specific data such as calculated wind, airspeed, vario, as well as downloading and declaring flights.
2- anything clearnav is missing or changed that I will miss?

Thanks

Ramy

[Chris Davison[_3_]]

At 03:50 09 March 2017, Ramy wrote:
>I am considering replacing my 302 with clearnav vario.
>My questions:
>1 - I am aware clearnav is not a supported option for XCSoar, but giving
>th=
>at they suppose to implement the same 302 protocol, will it work the same
>a=
>s 302 when using the XCSoar 302 driver? In particular I am interested in
>th=
>e 302 specific data such as calculated wind, airspeed, vario, as well as
>do=
>wnloading and declaring flights.
>2- anything clearnav is missing or changed that I will miss?
>
>Thanks
>
>Ramy
>

I have a Cnv vario linked to XC Soar and it works fine, including declaring
flights etc. I don't think the CNv sends calculated wind, but it does all
the rest.

Chris

[[email protected]]

The option to use externally calculated wind was removed in one of the recent XCSoar versions. So it also won't be available with a 302.

There were some issues with CNv serial communication but they were solved with software updates. It works well with XCSoar although it is officially not supported.

Christoph

[Dan Daly[_2_]]

On Thursday, March 9, 2017 at 2:39:53 AM UTC-5, wrote:
> The option to use externally calculated wind was removed in one of the recent XCSoar versions. So it also won't be available with a 302.
>
> There were some issues with CNv serial communication but they were solved with software updates. It works well with XCSoar although it is officially not supported.
>
> Christoph

I'm also using CNv with digital display, linked to an Oudie Lite running XC Soar with the Cumulus cable. Works well.

[Dan Marotta]

I've used the CNvXC for two years with a Streak/XCSoar and a 302 for 3
years before that and I now use the CNv with a ClearNav II flight
computer. Since I moved to a two-seater, I rigged up cable splitters
and two Bluetooth converters so my wife gets to use XCSoar when we fly.
XCSoar displays calculated winds, position, etc., from the CNv just
fine. XCSoar doesn't "support" ClearNav because ClearNav didn't or
wouldn't give them one to use for testing, but the CNv uses the 302
protocol.

On 3/9/2017 5:02 AM, Dan Daly wrote:
> On Thursday, March 9, 2017 at 2:39:53 AM UTC-5, wrote:
>> The option to use externally calculated wind was removed in one of the recent XCSoar versions. So it also won't be available with a 302.
>>
>> There were some issues with CNv serial communication but they were solved with software updates. It works well with XCSoar although it is officially not supported.
>>
>> Christoph
> I'm also using CNv with digital display, linked to an Oudie Lite running XC Soar with the Cumulus cable. Works well.

--
Dan, 5J

[Ramy[_2_]]

On Thursday, March 9, 2017 at 7:57:22 AM UTC-8, Dan Marotta wrote:
> I've used the CNvXC for two years with a Streak/XCSoar and a 302 for 3
> years before that and I now use the CNv with a ClearNav II flight
> computer. Since I moved to a two-seater, I rigged up cable splitters
> and two Bluetooth converters so my wife gets to use XCSoar when we fly.
> XCSoar displays calculated winds, position, etc., from the CNv just
> fine. XCSoar doesn't "support" ClearNav because ClearNav didn't or
> wouldn't give them one to use for testing, but the CNv uses the 302
> protocol.
>
> On 3/9/2017 5:02 AM, Dan Daly wrote:
> > On Thursday, March 9, 2017 at 2:39:53 AM UTC-5, wrote:
> >> The option to use externally calculated wind was removed in one of the recent XCSoar versions. So it also won't be available with a 302.
> >>
> >> There were some issues with CNv serial communication but they were solved with software updates. It works well with XCSoar although it is officially not supported.
> >>
> >> Christoph
> > I'm also using CNv with digital display, linked to an Oudie Lite running XC Soar with the Cumulus cable. Works well.
>
> --
> Dan, 5J

Thanks Folks. The XCSoar external wind is still available in current release. I hope they will keep it as the 302 wind calculation was more accurate and updated faster than XCSoar internal wind calculation. This was true when I compared between the two few years ago, perhaps it was improved since. But since CN wind calculation suppose to be even better than 302, I want to make sure it is working with XCSoar external wind option. Another important parameter that 302 provides to xcsoar is true airspeed which is then used to calculate instant headwind/tailwind component. I want to make sure this is working as well before I decide to switch to CN Vario.

Ramy

[[email protected]]

On Wednesday, March 8, 2017 at 10:50:40 PM UTC-5, Ramy wrote:
> I am considering replacing my 302 with clearnav vario.
> My questions:
> 1 - I am aware clearnav is not a supported option for XCSoar, but giving that they suppose to implement the same 302 protocol, will it work the same as 302 when using the XCSoar 302 driver? In particular I am interested in the 302 specific data such as calculated wind, airspeed, vario, as well as downloading and declaring flights.
> 2- anything clearnav is missing or changed that I will miss?
>
> Thanks
>
> Ramy

I flew with XCsoar for 1 or 2 years with a 302 and I would NOT want the winds from the 302. XCsoar has an excellent wind algorithm that I trust a lot more than the 302. XCsoar does a great job of figuring out the wind with little or no circling.

Chris

[Dan Marotta]

Ramy,

It works. Wind from the CNv is displayed on the XCSoar device. I
haven't configured XCSoar to display head/tail wind, so I can't verify
that that works. I'll likely fly tomorrow and I'll try to remember to
check that for you. In the mean time, you might go to clearnav.net and
peruse the forum. You might find the answer there.

Dan

On 3/9/2017 3:19 PM, Ramy wrote:
> On Thursday, March 9, 2017 at 7:57:22 AM UTC-8, Dan Marotta wrote:
>> I've used the CNvXC for two years with a Streak/XCSoar and a 302 for 3
>> years before that and I now use the CNv with a ClearNav II flight
>> computer. Since I moved to a two-seater, I rigged up cable splitters
>> and two Bluetooth converters so my wife gets to use XCSoar when we fly.
>> XCSoar displays calculated winds, position, etc., from the CNv just
>> fine. XCSoar doesn't "support" ClearNav because ClearNav didn't or
>> wouldn't give them one to use for testing, but the CNv uses the 302
>> protocol.
>>
>> On 3/9/2017 5:02 AM, Dan Daly wrote:
>>> On Thursday, March 9, 2017 at 2:39:53 AM UTC-5, wrote:
>>>> The option to use externally calculated wind was removed in one of the recent XCSoar versions. So it also won't be available with a 302.
>>>>
>>>> There were some issues with CNv serial communication but they were solved with software updates. It works well with XCSoar although it is officially not supported.
>>>>
>>>> Christoph
>>> I'm also using CNv with digital display, linked to an Oudie Lite running XC Soar with the Cumulus cable. Works well.
>> --
>> Dan, 5J
> Thanks Folks. The XCSoar external wind is still available in current release. I hope they will keep it as the 302 wind calculation was more accurate and updated faster than XCSoar internal wind calculation. This was true when I compared between the two few years ago, perhaps it was improved since. But since CN wind calculation suppose to be even better than 302, I want to make sure it is working with XCSoar external wind option. Another important parameter that 302 provides to xcsoar is true airspeed which is then used to calculate instant headwind/tailwind component. I want to make sure this is working as well before I decide to switch to CN Vario.
>
> Ramy

--
Dan, 5J

[Ramy[_2_]]

Thanks Dan. You may want to continue using this info box. Make sure to select "Head wind component (simplified)". Not sure why they choose to call it this way but the other one is calculated while the simplified is using the true airspeed data from XCSoar to provide accurate and instantaneous real time HW/TW. I found I am checking it more often than the calculated vector wind.

Ramy

[Dan Marotta]

Hi Ramy,

Today, I configured an Info Button on my wife's Streak/XCSoar to display
true airspeed (Airspeed True) and flew with it that way. It works!
True airspeed displayed by XCSoar looked like the vector sum of ground
speed and wind.

Dan

On 3/9/2017 7:25 PM, Dan Marotta wrote:
> Ramy,
>
> It works. Wind from the CNv is displayed on the XCSoar device. I
> haven't configured XCSoar to display head/tail wind, so I can't verify
> that that works. I'll likely fly tomorrow and I'll try to remember to
> check that for you. In the mean time, you might go to clearnav.net
> and peruse the forum. You might find the answer there.
>
> Dan
>
> On 3/9/2017 3:19 PM, Ramy wrote:
>> On Thursday, March 9, 2017 at 7:57:22 AM UTC-8, Dan Marotta wrote:
>>> I've used the CNvXC for two years with a Streak/XCSoar and a 302 for 3
>>> years before that and I now use the CNv with a ClearNav II flight
>>> computer. Since I moved to a two-seater, I rigged up cable splitters
>>> and two Bluetooth converters so my wife gets to use XCSoar when we fly.
>>> XCSoar displays calculated winds, position, etc., from the CNv just
>>> fine. XCSoar doesn't "support" ClearNav because ClearNav didn't or
>>> wouldn't give them one to use for testing, but the CNv uses the 302
>>> protocol.
>>>
>>> On 3/9/2017 5:02 AM, Dan Daly wrote:
>>>> On Thursday, March 9, 2017 at 2:39:53 AM UTC-5,
>>>> wrote:
>>>>> The option to use externally calculated wind was removed in one of
>>>>> the recent XCSoar versions. So it also won't be available with a 302.
>>>>>
>>>>> There were some issues with CNv serial communication but they were
>>>>> solved with software updates. It works well with XCSoar although
>>>>> it is officially not supported.
>>>>>
>>>>> Christoph
>>>> I'm also using CNv with digital display, linked to an Oudie Lite
>>>> running XC Soar with the Cumulus cable. Works well.
>>> --
>>> Dan, 5J
>> Thanks Folks. The XCSoar external wind is still available in current
>> release. I hope they will keep it as the 302 wind calculation was
>> more accurate and updated faster than XCSoar internal wind
>> calculation. This was true when I compared between the two few years
>> ago, perhaps it was improved since. But since CN wind calculation
>> suppose to be even better than 302, I want to make sure it is working
>> with XCSoar external wind option. Another important parameter that
>> 302 provides to xcsoar is true airspeed which is then used to
>> calculate instant headwind/tailwind component. I want to make sure
>> this is working as well before I decide to switch to CN Vario.
>>
>> Ramy
>

--
Dan, 5J

[Dan Marotta]

The Streak is used by my wive / #1 copilot. My ClearNav II continuously
displays wind direction/speed and headwind component (+,-).

Dan

On 3/10/2017 10:42 AM, Ramy wrote:
> Thanks Dan. You may want to continue using this info box. Make sure to select "Head wind component (simplified)". Not sure why they choose to call it this way but the other one is calculated while the simplified is using the true airspeed data from XCSoar to provide accurate and instantaneous real time HW/TW. I found I am checking it more often than the calculated vector wind.
>
> Ramy

--
Dan, 5J

[6PK]

I just finally got to fly with my newly installed ClearNav digital vario, connected to a Kobo running Tophat.
Other than some minor issues all seems to work as advertised.
(The Kobo rocks)
6PK