If starting from scratch the best advice to begin with is to buy the new Lycocos NAVI GT31, read posts belowto find out who has them.

maxp said...
[I need some help to make the right choice. Is there any difference (that matters) or is it just a way to make me pay more money for no real advantage.
Max

I got an email from bc. He sent me a comparison of the 2GTs at : boardcrazy.com.au
It doesn't seem to be more waterproof though.

May be they ment "windsurfing speed" for the accuracy.
Good luck.
Stef

I Think the GT11 is fine if there are any around still.
I do Know that Pierre Has 2 and is seliing his spare one with Aqua-Pac for $130.
It has only been used a few times .

now that the GT31 has been released will the firmware for the GT11 still get updates for the speed crew.

or will all of that focus now be directed towards the GT31?

cheers.

I hope you bought yours before you posted that link, you may just get there too late!!!!

Gestalt said...

now that the GT31 has been released will the firmware for the GT11 still get updates for the speed crew.

or will all of that focus now be directed towards the GT31?

cheers.

I doubt there will be much, if any firmware development on the GT-11 from now. Focus of development will certainly be on the GT-31.

maxp said...

Hi Guys,
I'm wondering what all that technical quackery evaluates to in the difference between the GT11 and the GT31.

Using the gpsss time of 10 seconds and with a sailor doing 40 knots, she would travel approximately 205.777 metres. How much variation in actual distance is there likely to be between the two gps's.

Is this definite or only a possibility..???

Are we talking mm or cm. ????

Max

Approximately 205.777 meters????!!!! Wow, that is very approximate!

It is definite that there will be a much higher possibility that the speed calculated from the GT-31 will be more than twice as accurate.

Since we do not use distance to calculate our speed anymore (we use direct measurement of speed using the Doppler principle), the distance recorded by the GPS is not important anymore, but the GT-31 is more accurate in track-points as well as I understand it, I just don't have a figure on it.

The actual numbers are still being tested. Data in side by side tests is being compared. Preliminary data suggests that the accuracy of the GT-31 is in the order of about 0.02 knots with 99.9% confidence whereas with the GT-11 it is more like 0.2 knots with 99% confidence. (Don't take these figures as gospel because I don't have the actual data with me, this is just the rough comparison as I remember it)

I will try to confirm these preliminary figures and post again.

Correct answer.

Max if money is an issue and you are not concerned with finding the closest possible truth in your speeds, and you are interested in knowing and observing your approximate speeds, as well as adding some fun to your windsurfing then the GT-11 will be perfect for you.

Ok guys, so now who is upgrading, and who is selling his GT11 ?

LeStef said...

Ok guys, so now who is upgrading, and who is selling his GT11 ?

Sold one GT-11. Kept two for statistical comparison with GT-31's. I would keep one anyhow because there are some esoteric things the GT-11 does that the GT-31 doesn't (that would not be noticed by 99% of users) although I am not sure I will ever need them anyhow.

Sweet

More money to buy better mast