My boom starts whistling when I hit about 25 knots.

Bender said...
[ slelect fin, they whistle

this is only speed indicator relative to water,
not relative to wind speed.

If I was Apple (R) I would quickly patent the way the speaker is mounted to the mast or the colour of the winglets to have all royalites then

sboardcrazy said...

Mobydisc said...

My boom starts whistling when I hit about 25 knots.

I start screeching when I hit 28kts..

Who is screaming more at 40kts? you or boom

you can set an overspeed alarm on a GT-31 - does this not suffice?

Sailhack said...

I like the sound of the wind running through my hair (on my ears)...not a whistle or buzzer - no-extra noise for me thanks.

no problem, indicator could be visual gauge, led strip etc
completely noise less

the point to supply additional information , like a racing car always have a few gauges, unless simple cart

but obviously that is not compulsory for leisure sailor

one may say that could provide the edge / advantage to proper races to allow tune up on fly

thank you for attention anyway

russh said...



you....

...d!ckhead

I presented you my original idea.
May not be practical today, you may not like it,
I do accept reasonable critics
but I don't think I deserve it,
that is simply
sad

Macroscien said...

russh said...



you....

...d!ckhead

I presented you my original idea.
May not be practical today, you may not like it,
I do accept reasonable critics
but I don't think I deserve it,
that is simply
sad

You asked for community ideas - that was mine - I'm offended now

Don't take it personally - its tongue in cheek cause really I have no idea what the **** your talking about

Macroscien said...

Lets think about device that generate sound at the pitch proportional to the difference between wind speed measured at the top of the mast and real GPS speed, or relative to the water speed.

Electronic or mechanical. quite easy to implement.

In practice:
Now you have two windsurfers (or sailors in general) running in parallel at the distance. One is running much faster then another. But his sound pitch is higher. Which means that is not especially more effective in catching the wind , but just cough the gust.

Drawback:
Each windsurfer create additional artificial noise that for recreational sailing could be annoying to one.
For recreational moto bike rider or jetski - that is not a drawback at all - the noisier the exhaust pipe - the better[}:)]
Pro:
Such tool could be helpfull for racers to tune up their gear and position in fly..

Design:
The most rudimentary could be a vertical axis turbine + small ac generator -that spin at speed proportional to the relative wind speed - then generate sound using buzzer ( small speaker) or mechanical simple clatter

Or there is already such thing used by all yacht racing crews




Implementation
tiny anemometer installed on the top of the mast ( like that but with some mesh protector around ) connected directly to piezzo buzzer or speaker will do the job.


Drawing



Other>
*For 3rd observer (coach) take also Doppler effect into account when comparing this two competitors.
**You know guys what? By publishing such idea I may void any further claim anybody else may have.
Which translate to : quicker to the market and cheaper for all of us .
Free to all to use like Android
***Electronic more advanced version could compare data from other sensor: GPS, vacuum sensor , etc to compute more accurate results and sound/display/transmit/record output
**** It potentially increase safety on the water, by making other aware of approaching sailor
* As for kiters, similar device could be easily mounted either on the helmet (more accurate) or on kite itself -more fun when turning.
* Now visual + audio effects could rise attractiveness of the sailing sports ie Olympics, racing for spectators
*for simplicity we could call device SCREAMER -Sound Creating Reactive Emitter Analyser Mobile and Enviroment Resitent - other community proposals welcome

I get a bit narked with people who think "the noisier the exhaust pipe - the better" or things like that. It's incredibly selfish IMHO. One turkey on a motorbike or jetski or a loud windsurfer is basically saying to everyone within earshot "*&^%$ you, I am more important than you; I can disturb you and interrupt what you are doing because I count and you don't".

This is ancient technology; highly sophisticated VMG measurements have been around on yachts for decades but they are not selfish enough to scream about it. If windsurfers, who so often sail in quiet environments near people who want to enjoy the sounds of nature, made a screech purely for their own fun it would be simply putting themselves far above other people.

Chris 249 said...

I get a bit narked with people who think "the noisier the exhaust pipe - the better" or things like that. It's incredibly selfish IMHO. One turkey on a motorbike or jetski or a loud windsurfer is basically saying to everyone within earshot "*&^%$ you, I am more important than you; I can disturb you and interrupt what you are doing because I count and you don't".

valid point. noise the killer. for us as everyday leisure sailor.
But there are exemption for your consideration.
I am not rooter (even looker) and never been to football match.
But there are some (many actually ) that been there


So lets imagine for a moment only

OLYMPICS 2016.



On the start line 20 windsurfers "roaring" their buzzers. Crow on the beach watching is cheering ! TV viewers excited ! Now they SEE and HEAR.

Start. Windsurfers jump of the blocks. Sound now oscillate at different frequencies.
Then concentrate on the leading pair. Close up. You could hear SCREAMER vibrations ( not so much noise) - that indicate precisely by the tone pitch that a leading windsurfer is a bit quicker to second - because his vibrating pitch is few tones lower that second one.
The lower the tone - the better position and use of the same gear ! Easy like that.
From this two the one with lower pitch always WIN !! easy like that !!

Some may not like AUDIBLE sailing - like first b&w movie, crowd may love it.
We don't know as long as we do not try.
Some sports are better in total silence - Chess - no ovation after every move.
Rugby players could be also more precisely shooting to the gate in total silence but that is the game and crowd must roar !
So good quality generated sound could be life saver for us windsurfers , kiters even sailr 470 will be more excited.
Never know unless we try few prototypes in real life.

For showwing up sound could a saver. For Sunday sailors I do agree not so much.
But sound there is not to disturb. Could be transmitted direct to your ear - just a quit pitch.
How it works and feel for sailor.
Imagine. You do sail at straight open at 'maximum' speed.
Now you move your hand or feet a bit, reposition body, anything you do - very accurately is represented in changing tone pitch. You instantly recognize if change is positive - increase your speed or vice versa.
There is no other tool at this moment ( that I know about able to do the same) .
GPS is not an answer since you are not as much interested in overall speed but if the speed is actually the highest possible at the conditions. And this screamer do exactly so. Tell you only that you are now sailing at maximum efficiency, maximum speed at this given wind.

Audio/sound as a medium is preferable over visual gauges since you need to concentrate on the way in front , not to watch colourful displays.

Audio provide also the easiest way to learn fast sailing by your own body reflex without engaging brain too much.

Audio for funsters

specifically for kiters with screamer attached to the kite and wave or free style windsurfer the pitch tone of the screamer is actually very audible funny, entertaining because every manurer you do instantly generate changing tone by octave ( a lot)

If not for us , the screamer is must have gadget for our kids or grand kids !
Think about that and don't kill inventor yet
Our grand kids could google ancient roots of the screamer and this SB site could pop up !
Think. We could be part of the history now

PS I accept all critics by merrit , but please do not attack me now for spelling etc as I am very busy now with my gardening ( there is no wind second week )
HAve a nice fishing guys too if you don't have a wind today also

evlPanda said...

^ What about a Heads Up Display type configuration in sunglasses then? Quite easy to implement.

You are right. I have been thinking about that or even on OSD ( ON SAIL DISPLAY) that I could you talk you later guy if you are interested

But we are limited by our physiology as a humans and our sensed are already overloaded when windsurfing
(I don't know about over like SUP much)

So observing any display at all at extreme condition is quite useless.
I did some motorbike riding and is nothing better then listening to tune of your motor to get you over that sharp bend.

Similarly here. The last sense that we have a bit spare when sailing. That don't need to be noises - just a quiet pitch transmitted inside your helmet.

Next is a bit of physiology again. Similarly like for the balance you do not relay on your brain to keep you on that bike or board but on cerebellum and spinal cord.
Because is a lot quicker!

SCREAMER also allow to learn this automatic reflexes without engaging your brain.

There is only one rule to learn - THE LOWER THE SOUND PITCH - the fastest you go according to current wind condition. Any slight improvement in sail angle, foot or body position and instantly the sound is going a bit up or down.
At this moment is not the easy for us to recognize minimal changes in our speed to detect imprevements. Overal fin noise. That it.
GPS also misleading because show resulting speed - but that depend on the wind speed.
Our screamer reading actually average wind speed, so we know exactly that in given condition we are going to the max possible.

evlPanda said...

You'd need a combination of an accurate GPS unit, a reading of the apparent wind speed and direction at the top of the mast, and something to do the on-the-fly claculations and make a noise. Perhaps an iPod.

A few vectors later you'll have your answer!

Note with the below example you'll actually have apparent wind and boat speed, so you'll want to first calculate true wind speed and direction before you apply it against your boat speed and direction, to give you your "efficiency".



An iPod could talk to your GPS (probably not) so get cracking on iOS development.

As you said, "quite easy to implement", so I'll leave the rest to you. We'll be expecting a prototype any day!

Good I do promise to show prototype in action if anybody else will not do this earlier. I strongly advice , anybody can go to garage and do prototype in half and hour if have got some parts:
AC micro motor - hobby part from old model
-vertical axis turbine - could be made from few ping pong ball cups or preferably smaller
- old buzer or small speaker or headset
-some plastic housing , wire and sealent - glu

that is it. must work . or money back


This simple model is ANALOG device - thankfully due to his simplicity do all needed calculations by iteself.

We could do later DIGITAL device that perform calculation from attached sensors accordingly to programmed algorithm. Genarate audio or visual at any preferable tone, tones or paterns. Great tool but too complex for me to do, but there are plenty smart guy among us that could do it easy. Specifically when they could comercialize the product. I conld not see why not and why do we need to buy such gadget from Sillioon Volley. I wish even and prefer that we could do this gadget and send worlwide instead of iron ore

Hello guys , I don't need anything for that. You could do quick patent in SB name and share or spent profit to publico bono - as you wish.
The patent could be obtain for device itself or even same idea of presenting specific measured component in audible form, more to imagine here that in device itself

Or do yourself and sell without waiting for Chinese competition.

wait ,
no,
you may give me a discount on new slalom board when come to your shop