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Search: Posts made by: jfitch
Forum: Soaring January 16th 18, 08:30 PM Posted to rec.aviation.soaring
Replies: 14
Views: 65
Posted By jfitch
Parachute Lumbar Bladder

On Monday, January 15, 2018 at 7:12:49 PM UTC-8, wrote:
"Ha Ha! Maybe this thread and the one about relief systems can be merged..... "

So, you think a "Comedy Relief"...
Forum: Soaring January 16th 18, 03:50 AM Posted to rec.aviation.soaring
Replies: 14
Views: 65
Posted By jfitch
Parachute Lumbar Bladder

On Monday, January 15, 2018 at 6:24:39 PM UTC-8, wrote:
"After chasing leaks in the bladder for years, I discovered that the canopy cover, rolled up in its bag, was just right...
Forum: Soaring January 15th 18, 10:31 PM Posted to rec.aviation.soaring
Replies: 14
Views: 65
Posted By jfitch
Parachute Lumbar Bladder

On Monday, January 15, 2018 at 12:14:55 PM UTC-8, Charlie M. (UH & 002 owner/pilot) wrote:
No connection with them/her, but I believe "ridge sewing" also does fabric covered TempurFoam wedges.
...
Forum: Soaring January 15th 18, 10:30 PM Posted to rec.aviation.soaring
Replies: 14
Views: 65
Posted By jfitch
Parachute Lumbar Bladder

On Monday, January 15, 2018 at 8:36:40 AM UTC-8, Roy B. wrote:
Does anybody know a source for the inflatable lumbar bladder (with hose & pump bulb) that goes in some parachute packs - like the old...
Forum: Soaring January 11th 18, 05:51 PM Posted to rec.aviation.soaring
Replies: 22
Views: 144
Posted By jfitch
Wingtip Wheels from Libelle 201?

On Wednesday, January 10, 2018 at 11:47:31 AM UTC-8, Bob Kuykendall wrote:
...possibly those made for skateboards...

My experience is that skateboard wheels don't do very well as either...
Forum: Soaring January 10th 18, 07:08 AM Posted to rec.aviation.soaring
Replies: 11
Views: 130
Posted By jfitch
Electric Towplane sets a new climb record

On Tuesday, January 9, 2018 at 9:09:17 PM UTC-8, Surge wrote:
On Wednesday, 10 January 2018 02:51:12 UTC+2, Renny wrote:
We have definitely come a long way in the past 10 years, so just think...
Forum: Soaring January 8th 18, 06:25 PM Posted to rec.aviation.soaring
Replies: 38
Views: 187
Posted By jfitch
Lubricant for spar pins

On Monday, January 8, 2018 at 4:42:18 AM UTC-8, wrote:
Hi Eric
I see the Aeroshell 5% molybdenum disulphide grease is now sold as Aeroshell 64. It's widely used in aircraft. I...
Forum: Soaring January 7th 18, 05:35 AM Posted to rec.aviation.soaring
Replies: 45
Views: 299
Posted By jfitch
ADS-B Update

On Friday, January 5, 2018 at 6:44:26 AM UTC-8, Jeff Morgan wrote:
On Thursday, January 4, 2018 at 10:28:50 PM UTC-7, Darryl Ramm wrote:

In an experimental glider you can use a TN72 to meet...
Forum: Soaring January 2nd 18, 10:48 PM Posted to rec.aviation.soaring
Replies: 59
Views: 191
Posted By jfitch
SSA 2018 Rules Finish Penalty

On Monday, January 1, 2018 at 8:00:28 PM UTC-8, John Cochrane wrote:
This is simply not true. Crashes are not inevitable. When there is a huge points advantage to clearing the fence by 10 feet and...
Forum: Soaring December 30th 17, 03:30 AM Posted to rec.aviation.soaring
Replies: 21
Views: 144
Posted By jfitch
The Reformed Smoker Challenge

On Friday, December 29, 2017 at 6:14:54 PM UTC-8, JS wrote:
On Friday, December 29, 2017 at 4:12:33 PM UTC-8, wrote:
"All I have ever heard since starting soaring in 2012 is...
Forum: Soaring December 28th 17, 07:11 AM Posted to rec.aviation.soaring
Replies: 21
Views: 144
Posted By jfitch
The Reformed Smoker Challenge

Yep, people look for different challenges. Not much difference at all in skill between an ASW27 and an ASH26, only some convenience in failed attempts.. On the other hand, done in a 1-26 or a hang...
Forum: Soaring December 28th 17, 12:12 AM Posted to rec.aviation.soaring
Replies: 21
Views: 144
Posted By jfitch
The Reformed Smoker Challenge

On Wednesday, December 27, 2017 at 8:47:30 AM UTC-8, JS wrote:
With all the talk on 13.5m electric stuff, new class of "soaring competition" etc... A challenge for anyone currently flying only...
Forum: Soaring December 27th 17, 01:21 AM Posted to rec.aviation.soaring
Replies: 57
Views: 250
Posted By jfitch
Death of the 13.5m class?

On Tuesday, December 26, 2017 at 6:19:19 AM UTC-8, Tango Eight wrote:
On Monday, December 25, 2017 at 11:15:18 PM UTC-5, Eric Greenwell wrote:
Even if the scoring ends with the motor
...
Forum: Soaring December 24th 17, 10:07 PM Posted to rec.aviation.soaring
Replies: 57
Views: 250
Posted By jfitch
Death of the 13.5m class?

Andy, why not just penalize the altitude gain and distance along course made during the engine run? It would all be in the log file and you wouldn't need to worry about what did it.

On Sunday,...
Forum: Soaring December 24th 17, 08:58 PM Posted to rec.aviation.soaring
Replies: 57
Views: 250
Posted By jfitch
Death of the 13.5m class?

That is not entirely true. Some 'cruisy' type races allow engine runs with a penalty. There are assumptions made as to the advantage of the engine run.. One interesting consequence was a 1st place...
Forum: Soaring December 24th 17, 08:43 PM Posted to rec.aviation.soaring
Replies: 23
Views: 116
Posted By jfitch
Compare Polars

I understand perfectly how the classic method is done. Johnson did it just as you describe. And got +/- 5% scatter (and criticism from the Germans). The other ways you describe are rife with...
Forum: Soaring December 24th 17, 08:30 PM Posted to rec.aviation.soaring
Replies: 11
Views: 88
Posted By jfitch
E-Concept

Technology will catch up and pass your definitions. I'm quite sure is it technically possible, and even practical, to install an autopilot and modest AI computer that would thermal better than the...
Forum: Soaring December 24th 17, 12:09 AM Posted to rec.aviation.soaring
Replies: 23
Views: 116
Posted By jfitch
Compare Polars

A couple percent error in static/pitot is considered to be pretty good. A couple percent error in ASI instrument is pretty good. A couple percent error in sink rate however measured is pretty good....
Forum: Soaring December 23rd 17, 08:38 PM Posted to rec.aviation.soaring
Replies: 11
Views: 88
Posted By jfitch
E-Concept

I'll admit to not understanding their concept. If it involves storing energy while flying, to be used in the weak spots then I would say the physics is the same, only the details of execution are...
Forum: Soaring December 23rd 17, 08:22 PM Posted to rec.aviation.soaring
Replies: 23
Views: 116
Posted By jfitch
Compare Polars

With today's computers, 6th order polynomials are easy to deal with, so have at it. But - getting a fit to within 1% of data that has errors of 5 or 10% is a fools errand. Idealized drag equations,...
Forum: Soaring December 23rd 17, 05:44 PM Posted to rec.aviation.soaring
Replies: 23
Views: 116
Posted By jfitch
Compare Polars

I'm pretty sure there is no value in fitting a 6th order polynomial. The data isn't that good.

On Friday, December 22, 2017 at 12:22:05 PM UTC-8, wrote:
On Friday, December...
Forum: Soaring December 23rd 17, 05:39 PM Posted to rec.aviation.soaring
Replies: 11
Views: 88
Posted By jfitch
E-Concept

We already used stored energy. Are you saying there are types you like and types you don't?

On Saturday, December 23, 2017 at 7:50:51 AM UTC-8, Pat Russell wrote:
FAI have introduced "E-Concept"...
Forum: Soaring December 22nd 17, 03:50 AM Posted to rec.aviation.soaring
Replies: 70
Views: 424
Posted By jfitch
Relieving in flight

I wonder what they do if you pick 2018? Send you one into the future?

On Thursday, December 21, 2017 at 5:14:09 PM UTC-8, Jonathan St. Cloud wrote:
So, pick a number. I would never use my real...
Forum: Soaring December 21st 17, 11:59 PM Posted to rec.aviation.soaring
Replies: 70
Views: 424
Posted By jfitch
Relieving in flight

On Wednesday, December 20, 2017 at 6:56:46 PM UTC-8, wrote:
Ok guys, this has probably been covered in older posts but what are you all using regarding urinary relief on long...
Forum: Soaring December 15th 17, 04:19 AM Posted to rec.aviation.soaring
Replies: 45
Views: 299
Posted By jfitch
ADS-B Update

On Thursday, December 14, 2017 at 4:27:39 PM UTC-8, Darryl Ramm wrote:
On Thursday, December 14, 2017 at 4:04:16 PM UTC-8, jfitch wrote:
On Thursday, December 14, 2017 at 12:40:07 PM UTC-8,...
Showing results 1 to 25 of 500

 
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