Double Demerits (NSW, Australia) - 2014-02-02
Sailor 2 Second Peak (Kts)5 x 10 Second Average (Kts)1 Hour (Kts)Alpha Racing 500m (Kts)Nautical Mile (Kts)Distance Travelled (km)
Cheeky Monkey
26.43(D)
24.81(D)
6.83(D)
17.14(D)
18.76(D)
23.27(D)
Sparky
28.93(D)
26.41(D)
16.55(D)
18.69(D)
22.45(D)
88.99(D)
Jethrow
Karl
Waiting4wind
Laff77
Peter (Wineman)
Roar
Carol
AlfaMale
Artur Kowalski
George
Remi Dunoyer
Nigel
Barks
Palleaon
JohnM
Dean Seal
Starboard64
Andrew
Erik
Dieter
Rico
Rodskeg
Jules
Greg Kay
Remi Roques
Average27.6825.6111.6917.9220.6156.13
Cheeky Monkey (983km):
3946 days ago

Kyeemagh, NSW, Cheeky Monkey ML112, TR4 - 6.6M AND muf 39cm

First sail in the last two months. I found I struggled when really overpowered but comfortable the rest of the time (when there was wind!)

 

 



Sparky (3994km):
3944 days ago

Budgewoi Lake, NSW, AU

JP Slalom IV 84L, Gaastra GTX 7.0m, Maui Delta Slalom 19cm

Saw Karl's video of Budgewoi Lake and decided it looked worth the 90 minute drive (compared with 20mins to Kyeemagh) - and... it most certainly is!. So the wind was a tad disappointing but it was easy to see huge speeds being possible here, even for a lightweight like me. The delta fin was brilliant, straight through big patches of weed with just a slight deceleration, only just starting to hit the shellfish when it was ankle deep. Heard a new (for me) windsurfing sound - the buzzing noise of micro-chop giving way to a scraping noise as the water turned completely smooth, much like a snowboard on ice. Not sure why that's so cool, but it is!

Never close to being overpowered so I knew top speeds weren't going to be impressive, but was hopeful for a decent alpha. Didn't quite expect such a result! My last 5 best alphas all being 19.6-19.9, I thought I'd never crack 20...

Good to meet a few of the Marauders before heading out - thanks for the pointers lads. I'll definitely be back!

 

** UPDATE **

Very sad this, but on closer investigation it looks like there was a problem with the gpx file I uploaded to KA72. See my comment below for details. The miracle alpha is no more..!



Comments
Karl


NSW
Australia
3946 days ago

Great to see you going windsurfing again. Hope you feel good afterwards.
SeaSkip


VIC
Australia
3946 days ago

Welcome back Stuart, been wondering when you'd return.

Nice Alpha and NM for such a break!
the new guy


NSW
Australia
3945 days ago

Great alpha Sparky!! I've never seen an alpha so close to a 2 sec peak - that's got to be a record...
Karl


NSW
Australia
3945 days ago

Wow.... A huge jump for your alpha. Yes Budgewoi is worth the drive if we want to get PBs. Well done David.
SeaSkip


VIC
Australia
3945 days ago

Stonkin' alpha Sparky, nice work. 
Adrian Vos


NSW
Australia
3945 days ago

Good to see you back Stuart!

AWESOME alpha Sparky!
Artur Kowalski


NSW
Australia
3945 days ago

Nice PB Sparky
Mehore


NSW
Australia
3945 days ago

SUPER ALPHA PB Sparky!! That is awesome especially with th 2 sec under 30, WELLDONE!! Nice to meet you.
Cheeky Monkey


NSW
Australia
3945 days ago

Hey Karl, this morning I could'nt get out of bed, but had to! Legs, arms and even my neck aches. Better now though
Sparky


NSW
Australia
3944 days ago

** SAD CLIMBDOWN **

So I'm not sure what's gone on here, but there seems to have been a problem with the gpx file I uploaded to KA72.

I've just started using GPSResults - new computer, which is a Mac, which RSpeed isn't available for. 

I loaded the original SBN file into GPSResults, and deleted the first 335 trackpoints before it got satellite lock - what I thought would be the equivalent of 'Delete invalid' in RSpeed. Then I checked the results - and there's a 25kt alpha with me going 23.3kt at 16:35:00 in the middle of a turn. I exported the trackpoints and uploaded to KA72. Happy days. 

 

But looking again this morning, it looks like a very tight turn - pretty unlikely it was that fast. Turning off Doppler, the speed suddenly drops to 2.9kt at 16:35:00..!

 

If I don't delete the first 335 trackpoints, the Doppler and non-Doppler speeds are consistent and not rapid - and there are three missing trackpoints with interpolated speeds. Deleting those first 335 trackpoints seems to have done something very strange in the vicinity of missing trackpoints. 

 

So I've gone back to GPS Results and gone through my usual workflow - load SBN, delete invalid, export trackpoints, upload to KA72, post to GPSTC. All the results are pretty close, except the alphas are way slower, and - perhaps a clue? - the distance is 10km further. 

Any ideas?
SeaSkip


VIC
Australia
3944 days ago

You're a geek! ;-)
the new guy


NSW
Australia
3944 days ago

Hmm weird... I use realspeed on my mac by running windows in the free virtualbox

https://www.virtualbox.org/

I can have a look at the tracks in realspeed if you like?
Sparky


NSW
Australia
3944 days ago
I do have Realspeed in a vbox too - but got GPSResults so I could run it natively. Realspeed shows roughly the same results as I've now posted, with or without deleting invalid points. I might ask Manfred (creator of GPSResults) if he can see what's going on.
Adrian Vos


NSW
Australia
3943 days ago

Bugger Sparky! That is a pity... but I am impressed by your geekness in looking into this.