Average OLC flown distance by glider

[Jacopo Romei]

Hello everybody,

as a newbie, I often find myself wondering
- how far a specific glider can be pushed
- how far a specific glider can be pushed by *its* average pilot

The second point is very important because, as obvious as it may sound, no glider "gets there" alone and it surely must be matched by a pilot with related skills.

By the way, end-to-end, I thought that crunching & aggregating some yearly OLC data, I could find a relevant answer.

As of today, on gliderreview.com every glider is shown along with its average flight lenght in the previous year. That allows for anyone to get both information: how far is any glider usually flown and, most important, how far outside of my comfort zone any glider is.

Sure this is based on OLC-uploaded flights only, but still any statistics is based on sampling and OLC to me is a quite reliable and representative data population. In other words: crunching 14 thousands flights will be enough for me to get the idea. ;-)

Enjoy!

--
Jacopo

[Tony[_5_]]

On Tuesday, January 17, 2017 at 9:32:44 AM UTC-6, Jacopo Romei wrote:
> Hello everybody,
>
> as a newbie, I often find myself wondering
> - how far a specific glider can be pushed
> - how far a specific glider can be pushed by *its* average pilot
>
> The second point is very important because, as obvious as it may sound, no glider "gets there" alone and it surely must be matched by a pilot with related skills.
>
> By the way, end-to-end, I thought that crunching & aggregating some yearly OLC data, I could find a relevant answer.
>
> As of today, on gliderreview.com every glider is shown along with its average flight lenght in the previous year. That allows for anyone to get both information: how far is any glider usually flown and, most important, how far outside of my comfort zone any glider is.
>
> Sure this is based on OLC-uploaded flights only, but still any statistics is based on sampling and OLC to me is a quite reliable and representative data population. In other words: crunching 14 thousands flights will be enough for me to get the idea. ;-)
>
> Enjoy!
>
> --
> Jacopo

i'll be sure to quit posting my short flights then :)

[Jacopo Romei]

Ahahah no! You could induce a rookie like me to buy a glider like yours!!! ;-)

[Ian[_2_]]

On 17/01/2017 17:32, Jacopo Romei wrote:

> Sure this is based on OLC-uploaded flights only, but still any
> statistics is based on sampling and OLC to me is a quite reliable and
> representative data population. In other words: crunching 14
> thousands flights will be enough for me to get the idea. ;-)

Cool!

But how did you manage to download 14000 flights from OLC? I thought
they had "data mining" restrictions, or have these been relaxed?

Of more interest to me if I were buying a glider is the average hours
flown per year since new for the mark. If you come across a glider that
is either tricky to fly, tricky to maintain, or just not that much fun
to fly, it is likely to have lower hours. Your average K21 is likely to
have flown a lot...

[Tango Eight]

On Tuesday, January 17, 2017 at 10:32:44 AM UTC-5, Jacopo Romei wrote:
> Hello everybody,
>
> as a newbie, I often find myself wondering
> - how far a specific glider can be pushed
> - how far a specific glider can be pushed by *its* average pilot
>
> The second point is very important because, as obvious as it may sound, no glider "gets there" alone and it surely must be matched by a pilot with related skills.
>
> By the way, end-to-end, I thought that crunching & aggregating some yearly OLC data, I could find a relevant answer.
>
> As of today, on gliderreview.com every glider is shown along with its average flight lenght in the previous year. That allows for anyone to get both information: how far is any glider usually flown and, most important, how far outside of my comfort zone any glider is.
>
> Sure this is based on OLC-uploaded flights only, but still any statistics is based on sampling and OLC to me is a quite reliable and representative data population. In other words: crunching 14 thousands flights will be enough for me to get the idea. ;-)
>
> Enjoy!
>
> --
> Jacopo

That put a smile on my face. I'd never have thought to do this.

Can you post as well the longest OLC flight for any given model? I think that would be even more entertaining.

best,
Evan Ludeman / T8
(ASW-20s rule :-))

[Jacopo Romei]

Ian,

> since new for the mark

Ehr... what does it mean?

Maybe you mean for the single *specific* glider on a per mark basis?

[Jacopo Romei]

> Can you post as well the longest OLC flight for any given model? I think that would be even more entertaining.

Coming down the pipeline:
- longest flight
- average flight year by year in the past: if a glider 10 years ago had a longer average this could mean lower prices today *because of the pilots flying it*, not because of inherent technical limits.

Stay tuned!

P.S. I need reviews guys! ;-) http://www.gliderreview.com/write-a-review

[Jacopo Romei]

> But how did you manage to download 14000 flights from OLC? I thought
> they had "data mining" restrictions, or have these been relaxed?

They let you download a spreadsheet. Then projection are computed as a single batch and stored.

[Mike C]

On Tuesday, January 17, 2017 at 12:16:51 PM UTC-7, Jacopo Romei wrote:
> > Can you post as well the longest OLC flight for any given model? I think that would be even more entertaining.
>
> Coming down the pipeline:
> - longest flight
> - average flight year by year in the past: if a glider 10 years ago had a longer average this could mean lower prices today *because of the pilots flying it*, not because of inherent technical limits.
>
> Stay tuned!
>
> P.S. I need reviews guys! ;-) http://www.gliderreview.com/write-a-review

The Mini Nimbus is not there unfortunately.

Mike

[Charlie M. (UH & 002 owner/pilot)]

I think he means "marque" as in "specific model" like a mini Nimbus.

[DG300PI]

Interesting to see these figures but wat do they actually mean?
- the high-end gliders are more often flown by high-end pilots
- what has to be taken into account is the number of gliders per type that are present in certain locations with good, average or less good gliding conditions.
For example, no one ships his/hers Ka8 to Namibia or Australia to fly distance records and you will typically find the more experienced pilots over there.

[son_of_flubber]

On Wednesday, January 18, 2017 at 8:16:51 AM UTC+13, Jacopo Romei wrote:

> Coming down the pipeline:
> - longest flight
> - average flight year by year in the past

I'm eager to see what the most successful pilots has done in one of the most reviled gliders (PW-5). I'd also like to see the longest flight in each year as this glider has fallen out of grace, and whether less successful pilots are flying it every year. Or maybe the average and longest flights will stay constant over time?

[[email protected]]

How about Bill Snead doing 841 km in his PW-5 on a straight out from near Austin, TX to Hugoton, KS. http://www.onlinecontest.org/olc-2.0/gliding/flightinfo.html?flightId=445970755



On Tuesday, January 17, 2017 at 10:54:08 PM UTC-6, son_of_flubber wrote:
> On Wednesday, January 18, 2017 at 8:16:51 AM UTC+13, Jacopo Romei wrote:
>
> > Coming down the pipeline:
> > - longest flight
> > - average flight year by year in the past
>
> I'm eager to see what the most successful pilots has done in one of the most reviled gliders (PW-5). I'd also like to see the longest flight in each year as this glider has fallen out of grace, and whether less successful pilots are flying it every year. Or maybe the average and longest flights will stay constant over time?

[Ian[_2_]]

On 17/01/2017 23:44, Charlie M. (UH & 002 owner/pilot) wrote:

> I think he means "marque" as in "specific model" like a mini Nimbus.

Exactly, thanks. For an extreme example, try compare a K8 with a
Monerai, Apis 13m and a PW5.

Or for a more useful example, compare a mini Nimbus with an Ls3.

Can you pull those flights into a database with a report function for
asking queries?

It is a nice fresh approach for a gliding website!

Ian

[Bruce Hoult]

On Wednesday, January 18, 2017 at 7:54:08 AM UTC+3, son_of_flubber wrote:
> On Wednesday, January 18, 2017 at 8:16:51 AM UTC+13, Jacopo Romei wrote:
>
> > Coming down the pipeline:
> > - longest flight
> > - average flight year by year in the past
>
> I'm eager to see what the most successful pilots has done in one of the most reviled gliders (PW-5). I'd also like to see the longest flight in each year as this glider has fallen out of grace, and whether less successful pilots are flying it every year. Or maybe the average and longest flights will stay constant over time?

At 156 km in his database, it's beating the ASK-21 and Grob 103, which everyone loves.

[Jacopo Romei]

Hello DG300PI,

thanks for letting your concern emerge. This is key to validate my choices.

> Interesting to see these figures but wat do they actually mean?
> - the high-end gliders are more often flown by high-end pilots

I agree: as obvious as it may sound, no glider "gets there" alone and every ship is usually matched by a pilot with related skills.
This is *exactly* the information I want to show. GliderReview was born to help inexperienced pilots like me navigate the ocean of available gliders. According to this vision, knowing that a glider is usually flown far tells me at least two things:
- it is a glider capable of supporting a pilot able to get that far
- it is a glider that pilots *that* good *nowadays* choose to get that far
I expect both these measures to imply a higher price for the glider.

> - what has to be taken into account is the number of gliders per type that are present in certain locations with good, average or less good gliding conditions.

We can re-apply by analogy the same logic here:
if a glider has a high average because it is usually flown in Namibia, that means again that it is a glider worth bringing there, thus usually a higher-end ship.

> For example, no one ships his/hers Ka8 to Namibia or Australia to fly distance records and you will typically find the more experienced pilots over there.

This is *the* point, not a counterargument: coherently you'll find Ka8 much cheaper than JS1 ;-)

To conclude: I don't need to understand the intimate cause-effect relationship between an indicator and a phenomenon, as long as it lets me understand *a part* of the effects.

As a recap: if a glider is usually flown shorter, it will tend to cost less.

Thank you again!
Would you like to write the review for the DG-300? :-)

Ciao

--
Jacopo

[Jacopo Romei]

son_of_flubber,

> I'm eager to see what the most successful pilots has done in one of the most reviled gliders (PW-5).


:-D I am eager too, but still GliderReview won't be covering all the possible data permutations about a glider, because its aim is *not* to be the next (and overlapping) "Glidopedia" but a tool to help choosing a glider to buy.

Stay tuned, though! :-)

[Bruce Hoult]

On Wednesday, January 18, 2017 at 1:45:11 PM UTC+3, Jacopo Romei wrote:
> Hello DG300PI,
>
> thanks for letting your concern emerge. This is key to validate my choices.
>
> > Interesting to see these figures but wat do they actually mean?
> > - the high-end gliders are more often flown by high-end pilots
>
> I agree: as obvious as it may sound, no glider "gets there" alone and every ship is usually matched by a pilot with related skills.
> This is *exactly* the information I want to show. GliderReview was born to help inexperienced pilots like me navigate the ocean of available gliders. According to this vision, knowing that a glider is usually flown far tells me at least two things:
> - it is a glider capable of supporting a pilot able to get that far
> - it is a glider that pilots *that* good *nowadays* choose to get that far
> I expect both these measures to imply a higher price for the glider.
>
> > - what has to be taken into account is the number of gliders per type that are present in certain locations with good, average or less good gliding conditions.
>
> We can re-apply by analogy the same logic here:
> if a glider has a high average because it is usually flown in Namibia, that means again that it is a glider worth bringing there, thus usually a higher-end ship.
>
> > For example, no one ships his/hers Ka8 to Namibia or Australia to fly distance records and you will typically find the more experienced pilots over there.
>
> This is *the* point, not a counterargument: coherently you'll find Ka8 much cheaper than JS1 ;-)
>
> To conclude: I don't need to understand the intimate cause-effect relationship between an indicator and a phenomenon, as long as it lets me understand *a part* of the effects.
>
> As a recap: if a glider is usually flown shorter, it will tend to cost less.
>
> Thank you again!
> Would you like to write the review for the DG-300? :-)

I dunno. Booming thermals, high cloudbase -- you could probably do 1000km in a PW5 in Namibia if you just took one there.

[Jacopo Romei]

> At 156 km in his database, it's beating
> the ASK-21 and Grob 103, which everyone loves.

Yes Bruce.
This is the *exactly* the "coup de théâtre" I am looking for by letting everybody compare this data among gliders.

Try enjoying the comparing feature:
http://www.gliderreview.com/comparing-gliders/schleicher-ask-21/politechnika-warszawska-pw-5

Obviously that doesn't necessarily mean that ASK 21 is harder to fly far than PW 5 -- because ASK 21's average could be affected by many other factors -- but it *definitely* means that PW 5 is capable of flights *that* long, which may be unexpected for a rookie like me listening to rumors only.

A good mix of opinions, rumors and data: that's what I am looking for by means of GliderReview. Enjoy!

[I need reviews! ;-) http://www.gliderreview.com/write-a-review]

Ciao

--
Jacopo

[Jacopo Romei]

> I dunno. Booming thermals, high cloudbase -- you
> could probably do 1000km in a PW5 in Namibia
> if you just took one there.

You could, right.
But reality is narrower: usually no one does.
Last but not least: when coping with normal averages, still possible exceptions are averaged out, by definition.

What could happen in theory is one thing, I see your point. What *usually* happens is what I care most for GliderReview.

[Bruce Hoult]

On Wednesday, January 18, 2017 at 1:56:06 PM UTC+3, Jacopo Romei wrote:
> > At 156 km in his database, it's beating
> > the ASK-21 and Grob 103, which everyone loves.
>
> Yes Bruce.
> This is the *exactly* the "coup de théâtre" I am looking for by letting everybody compare this data among gliders.
>
> Try enjoying the comparing feature:
> http://www.gliderreview.com/comparing-gliders/schleicher-ask-21/politechnika-warszawska-pw-5
>
> Obviously that doesn't necessarily mean that ASK 21 is harder to fly far than PW 5 -- because ASK 21's average could be affected by many other factors -- but it *definitely* means that PW 5 is capable of flights *that* long, which may be unexpected for a rookie like me listening to rumors only.

I don't know why it should be unexpected! The PW5 isn't as high performance a glider as a Discus or LS4 or even a Cirrus or Libelle, obviously. But it's very comparable to things such as the formerly much-loved Ka-6, in which lots of people used to regularly fly 300+ km.

I'm a pretty average pilot, but around 2000 I was taking a club PW5 to NZ contests with a dozen other PW5s and nearly as many Ka6s and tasks of 150 - 250 km. We had a lot of fun, and most people finished most of the tasks.

[Jacopo Romei]

Bruce,

I was just describing the reason-why of the website feature, not discussing PW-5 performance. :-)

You seem the right person to review PW-5 though! Would you share your opinions about the ship in a review at the following link? http://www.gliderreview.com/glider/politechnika-warszawska-pw-5

[Bruce Hoult]

On Wednesday, January 18, 2017 at 2:40:26 PM UTC+3, Jacopo Romei wrote:
> Bruce,
>
> I was just describing the reason-why of the website feature, not discussing PW-5 performance. :-)
>
> You seem the right person to review PW-5 though! Would you share your opinions about the ship in a review at the following link? http://www.gliderreview.com/glider/politechnika-warszawska-pw-5

It's all looong ago. I haven't flown one since April 2010 (two flights), and before that one flight each in 2009 and 2007. Mostly I fly the Janus (until Dec 2007) and after that the DG1000.

While checking my logbook I found this entry:

255 03/01/01 WN 4:25 A P 207km task, 3:30 on task. I won the day!

59 km/h. pretty slow.

[ND]

On Tuesday, January 17, 2017 at 8:41:58 PM UTC-5, DG300PI wrote:
> Interesting to see these figures but wat do they actually mean?
> - the high-end gliders are more often flown by high-end pilots
> - what has to be taken into account is the number of gliders per type that are present in certain locations with good, average or less good gliding conditions.
> For example, no one ships his/hers Ka8 to Namibia or Australia to fly distance records and you will typically find the more experienced pilots over there.

or less experienced rich ones....

[Jacopo Romei]

> or less experienced rich ones....

Still that would imply a correlation between income and that glider, which is among the main focuses of GliderReview.

Once again: solving the problem of TONS of, say, PW-5 being flown in Namibia is good for academia and thought experiments, but GliderReview is meant to cope with pragmatical retrieval of information about a bunch of market-relevant gliders.

[ND]

On Tuesday, January 17, 2017 at 10:32:44 AM UTC-5, Jacopo Romei wrote:
> Hello everybody,
>
> as a newbie, I often find myself wondering
> - how far a specific glider can be pushed
> - how far a specific glider can be pushed by *its* average pilot
>
> The second point is very important because, as obvious as it may sound, no glider "gets there" alone and it surely must be matched by a pilot with related skills.
>
> By the way, end-to-end, I thought that crunching & aggregating some yearly OLC data, I could find a relevant answer.
>
> As of today, on gliderreview.com every glider is shown along with its average flight lenght in the previous year. That allows for anyone to get both information: how far is any glider usually flown and, most important, how far outside of my comfort zone any glider is.
>
> Sure this is based on OLC-uploaded flights only, but still any statistics is based on sampling and OLC to me is a quite reliable and representative data population. In other words: crunching 14 thousands flights will be enough for me to get the idea. ;-)
>
> Enjoy!
>
> --
> Jacopo

i think there are too many variables to draw a reliable conclusion. i am also starting to think that you'd be surprised how far a specific glider can be pushed. people often takeoff too late and land too early. daniel sahzins 1000k in a 1-26, or this ~840Km flight in a PW5 are proof that the pilot is the biggest variable and not the glider. when i was younger i thought an 15 meter 750k thermal flight originating in upstate NY was pure fantasy, but dale kramer was damn near doing it. it amounted to taking off at 10 AM and flying until 6:00.

it's interesting to see what distances different gliders are being flown, i just doing think you'll get an accurate assessment. most people will go alot shorter than whats possible, but with the right person you'd be surprised how far it IS possible to go. at contests (which account for many of the cross country flights posted to OLC) the full soaring day isn't usually used.plenty of reason why the numbers won't be accurate.

[[email protected]]

Perhaps you can show price per LD point?

[Jacopo Romei]

> i think there are too many variables to draw a reliable conclusion

That's the reason why GliderReview aggregates a few for each glider, including "fuzzy" ones like comments and editors' review.

> i am also starting to think that you'd be
> surprised how far a specific glider can be pushed

Well, that would be related to *maximum* distance, not to *average* distance.

Thanks ND for your feedback.
Ciao

--
Jacopo

[Jacopo Romei]

Roel,

> Perhaps you can show price per LD point?

That idea was proposed by my friend Stefano Cherchi a few weeks ago.
I am considering it since that day. We'll see!

Thank you for your comment though, it is definitely inspiring.

--
Jacopo

[[email protected]]

Le mardi 17 janvier 2017 10:32:44 UTC-5, Jacopo Romei a écritÂ*:
> Hello everybody,
>
> as a newbie, I often find myself wondering
> - how far a specific glider can be pushed
> - how far a specific glider can be pushed by *its* average pilot
>
> The second point is very important because, as obvious as it may sound, no glider "gets there" alone and it surely must be matched by a pilot with related skills.
>
> By the way, end-to-end, I thought that crunching & aggregating some yearly OLC data, I could find a relevant answer.
>
> As of today, on gliderreview.com every glider is shown along with its average flight lenght in the previous year. That allows for anyone to get both information: how far is any glider usually flown and, most important, how far outside of my comfort zone any glider is.
>
> Sure this is based on OLC-uploaded flights only, but still any statistics is based on sampling and OLC to me is a quite reliable and representative data population. In other words: crunching 14 thousands flights will be enough for me to get the idea. ;-)
>
> Enjoy!
>
> --
> Jacopo

Hi
Some variable are impossible to know,control.
I post much shorter flight, and distance, now because I am 75 but still with
the same LS6. After 4.5 hours concentration is more difficult and energy
is gone. But 10 years ago 6.5 hours was easier. I still fly the same number
of flights each year.
Regards
Gilles

[Jacopo Romei]

> Some variable are impossible to know,control.

You are referring to an inherent characteristic of mean values, which is affecting the interpretation of *any* mean ever calculated.

As long as I don't label that value something like "The Only Truth About This Glider" it is still fair enough that's just another meaningful fuzzy datum among TONS of other fuzzy ones: reviews, opinions, rumors and, it shows, even stall speed! :-)

Thanks for your feedback Gilles and enjoy your LS6!

[Bruce Hoult]

On Wednesday, January 18, 2017 at 5:09:14 PM UTC+3, Jacopo Romei wrote:
> > i think there are too many variables to draw a reliable conclusion
>
> That's the reason why GliderReview aggregates a few for each glider, including "fuzzy" ones like comments and editors' review.
>
> > i am also starting to think that you'd be
> > surprised how far a specific glider can be pushed
>
> Well, that would be related to *maximum* distance, not to *average* distance.

Maximum can be an untypical outlier.

75th percentile, or 90th percentile would be interesting, assuming there are enough flights. (and the corresponding 25th or 10% percentile)

[[email protected]]

On Tuesday, January 17, 2017 at 3:32:44 PM UTC, Jacopo Romei wrote:
> Hello everybody,
>
> as a newbie, I often find myself wondering
> - how far a specific glider can be pushed
> - how far a specific glider can be pushed by *its* average pilot
>
> The second point is very important because, as obvious as it may sound, no glider "gets there" alone and it surely must be matched by a pilot with related skills.
>
> By the way, end-to-end, I thought that crunching & aggregating some yearly OLC data, I could find a relevant answer.
>
> As of today, on gliderreview.com every glider is shown along with its average flight lenght in the previous year. That allows for anyone to get both information: how far is any glider usually flown and, most important, how far outside of my comfort zone any glider is.
>
> Sure this is based on OLC-uploaded flights only, but still any statistics is based on sampling and OLC to me is a quite reliable and representative data population. In other words: crunching 14 thousands flights will be enough for me to get the idea. ;-)
>
> Enjoy!
>
> --
> Jacopo

We used to say in the 70's, tongue in cheek, "if you don't have talent you can buy wingspan or practice, practice", practice". Still hold true?

[son_of_flubber]

> son_of_flubber wrote:
>
> > I'm eager to see what the most successful pilots has done in one of the most reviled gliders (PW-5).
>
>
On Wednesday, January 18, 2017 at 11:47:53 PM UTC+13, Jacopo Romei wrote:

> :-D I am eager too, but still GliderReview won't be covering all the possible data permutations about a glider, because its aim is *not* to be the next (and overlapping) "Glidopedia" but a tool to help choosing a glider to buy.

son_of_flubber replies:

So how do I export to a CSV spreadsheet the OLC data that you've boiled down?

[ND]

On Wednesday, January 18, 2017 at 9:06:53 AM UTC-5, wrote:
> Perhaps you can show price per LD point?

i don't think thats a relevant metric. how often do we really fly at best L/D speed? best L/D is somewhat irrelevant. If all they were focused on was raw L/D, I'm sure they could make gliders with extraodinary L/D's, but they are trying to optimize the performance over a wide range of speeds.

[[email protected]]

On Tuesday, January 17, 2017 at 10:32:44 AM UTC-5, Jacopo Romei wrote:
> Hello everybody,
>
> as a newbie, I often find myself wondering
> - how far a specific glider can be pushed
> - how far a specific glider can be pushed by *its* average pilot
>
> The second point is very important because, as obvious as it may sound, no glider "gets there" alone and it surely must be matched by a pilot with related skills.
>
> By the way, end-to-end, I thought that crunching & aggregating some yearly OLC data, I could find a relevant answer.
>
> As of today, on gliderreview.com every glider is shown along with its average flight lenght in the previous year. That allows for anyone to get both information: how far is any glider usually flown and, most important, how far outside of my comfort zone any glider is.
>
> Sure this is based on OLC-uploaded flights only, but still any statistics is based on sampling and OLC to me is a quite reliable and representative data population. In other words: crunching 14 thousands flights will be enough for me to get the idea. ;-)
> Jacopo

Thanks for adding this. I would suggest that it would be good to be fully transparent and list your sources for the data. It might also be good to also list longest flight next to average, interesting trivia and it adds more information. Content is king, more info will drive more traffic to your site.

[Bruce Hoult]

On Thursday, January 19, 2017 at 12:02:06 AM UTC+3, ND wrote:
> On Wednesday, January 18, 2017 at 9:06:53 AM UTC-5, wrote:
> > Perhaps you can show price per LD point?
>
> i don't think thats a relevant metric. how often do we really fly at best L/D speed? best L/D is somewhat irrelevant. If all they were focused on was raw L/D, I'm sure they could make gliders with extraodinary L/D's, but they are trying to optimize the performance over a wide range of speeds.

Don't forget the ASW12 had a 46:1 L/D in 1965!

But those guys running around in Australia at the moment and averaging up to 160 km/h (85+ knots) on task are obviously not doing a lot of flying at their 50 - 60 knot best L/D speed.

[SoaringXCellence]

Jacopo,

Long ago (in the '70s) when the handicapping movement started (thanks Carl Herold) One of the metrics that was used was the -6kt sink speed. That is, at what airspeed did the polar have a 6KT sinkrate. If you look at the change in the polars over the last 40 years (I've been doing it a looong time, you'll see less of a best L/D change and a much greater speed where the -6 occurs. The polar's shape has been "flattening". Small tweeks in drag at the high end produce great results, while not affecting the best L/D much.. As most XC pilots know, it's the high-speed L/D that makes the difference.

[Mike the Strike]

>
> I dunno. Booming thermals, high cloudbase -- you could probably do 1000km in a PW5 in Namibia if you just took one there.

Arizona is not Namibia, but we do have some spectacular thermal soaring, often with high cloud base. One of our members, Mike Parker, flew a World Record distance in a PW5 of 626 km here about ten years ago. Not sure about 1000 km, but 850 km looks doable.

Mike

[Jacopo Romei]

> Thanks for adding this.

You welcome. Enjoy! :-)

> it would be good to be fully transparent
> and list your sources for the data.

Source is cited and weblinked already, driving the user to the OLC source report.

[Jacopo Romei]

I added the histogram of flown distances on a per-glider basis.

http://www.gliderreview.com/

Now you can get into the details of how each glider is used by crosscountry pilots. When data are not too many you can even know the location which every single flight took off from, in order to get a better intepretation of the average flown distance.

Enjoy this new feature and, please, submit your review! I am eager to know what you know and *how you feel* about your glider!

http://www.gliderreview.com/write-a-review

--
Jacopo

[[email protected]]

On Monday, January 30, 2017 at 11:44:07 AM UTC-5, Jacopo Romei wrote:
> I added the histogram of flown distances on a per-glider basis.
>
> http://www.gliderreview.com/
>
> Now you can get into the details of how each glider is used by crosscountry pilots. When data are not too many you can even know the location which every single flight took off from, in order to get a better intepretation of the average flown distance.
>
> Enjoy this new feature and, please, submit your review! I am eager to know what you know and *how you feel* about your glider!
>
> http://www.gliderreview.com/write-a-review
>
> --
> Jacopo

The histogram is great, you can get an idea of both average and outliers, and the details are great. On the interface it might be good to somehow indicate that it is a link - that is not currently very obvious.

[Jacopo Romei]

Thanks a lot for the feedback! I'll improve that!

--
Jacopo