Boat speed

[Soren Kjaer Nielsen]

Hi

How can I measure the speed in a RC racing boat ??

Soren
Denmark

[Steve Ritchie]

Soren Kjaer Nielsen wrote in message ...
> How can I measure the speed in a RC racing boat ??

Time how long it takes to travel 100 metres, then make a simple calculation
:~)

[Wayne Lundberg]

"Soren Kjaer Nielsen" <skn@vip.cybercity.dk> wrote in message
news:3e5bd092$0$31989$edfadb0f@dread12.news.tele.d k...
> Hi
>
> How can I measure the speed in a RC racing boat ??
>
> Soren
> Denmark
>
Set up buoys at 20, 30, 40 or more meters apart, on a course fitting your
maximum speed (broad reach?)

then speed in KPH = number of kilometers traveled divided by hours traveled.
So if ten meters in 20 seconds, .01/(3600/20) = 1.8 KPH
if 20 meters in 20 seconds, ,02/(3600/20) = 3.6 KPH

And just to test the formula
if 500 meters in 20 seconds, .5/(3600/20) = 90 KPH

Wayne
www.modelsailcars.com

>

[Soren Kjaer Nielsen]

Hi.

.....I know this manual method.....
I was thinking about some electronic measurement ???? eg. like this
"datalogger" for planes: http://home.arcor.de/d_meissner/d_logg2_engl.htm

Soren
Denmark



I was not thinking about
"Wayne Lundberg" <Waynelund@worldnet.att.net> wrote in message
news:4D77a.1543$Uy4.140823@bgtnsc05-news.ops.worldnet.att.net...
>
> "Soren Kjaer Nielsen" <skn@vip.cybercity.dk> wrote in message
> news:3e5bd092$0$31989$edfadb0f@dread12.news.tele.d k...
> > Hi
> >
> > How can I measure the speed in a RC racing boat ??
> >
> > Soren
> > Denmark
> >
> Set up buoys at 20, 30, 40 or more meters apart, on a course fitting your
> maximum speed (broad reach?)
>
> then speed in KPH = number of kilometers traveled divided by hours
traveled.
> So if ten meters in 20 seconds, .01/(3600/20) = 1.8 KPH
> if 20 meters in 20 seconds, ,02/(3600/20) = 3.6 KPH
>
> And just to test the formula
> if 500 meters in 20 seconds, .5/(3600/20) = 90 KPH
>
> Wayne
> www.modelsailcars.com
>
> >
>
>

[Soren Kjaer Nielsen]

Hi.

.....I know this manual method.....
I was thinking about some electronic measurement ???? eg. like this
"datalogger" for planes: http://home.arcor.de/d_meissner/d_logg2_engl.htm

Soren
Denmark



I was not thinking about
"Wayne Lundberg" <Waynelund@worldnet.att.net> wrote in message
news:4D77a.1543$Uy4.140823@bgtnsc05-news.ops.worldnet.att.net...
>
> "Soren Kjaer Nielsen" <skn@vip.cybercity.dk> wrote in message
> news:3e5bd092$0$31989$edfadb0f@dread12.news.tele.d k...
> > Hi
> >
> > How can I measure the speed in a RC racing boat ??
> >
> > Soren
> > Denmark
> >
> Set up buoys at 20, 30, 40 or more meters apart, on a course fitting your
> maximum speed (broad reach?)
>
> then speed in KPH = number of kilometers traveled divided by hours
traveled.
> So if ten meters in 20 seconds, .01/(3600/20) = 1.8 KPH
> if 20 meters in 20 seconds, ,02/(3600/20) = 3.6 KPH
>
> And just to test the formula
> if 500 meters in 20 seconds, .5/(3600/20) = 90 KPH
>
> Wayne
> www.modelsailcars.com
>
> >
>
>

[John Mianowski]

There's a very brief description of something here:

http://www.ntxbg.org/pgBattleStations/pgBattleStations.htm

More details will be posted one of these days.

JM

On Wed, 26 Feb 2003 20:01:25 +0100, "Soren Kjaer Nielsen"
<skn@vip.cybercity.dk> wrote:

>
>
>Hi.
>
>....I know this manual method.....
>I was thinking about some electronic measurement ???? eg. like this
>"datalogger" for planes: http://home.arcor.de/d_meissner/d_logg2_engl.htm
>
>Soren
>Denmark
>
>
>
>I was not thinking about
>"Wayne Lundberg" <Waynelund@worldnet.att.net> wrote in message
>news:4D77a.1543$Uy4.140823@bgtnsc05-news.ops.worldnet.att.net...
>>
>> "Soren Kjaer Nielsen" <skn@vip.cybercity.dk> wrote in message
>> news:3e5bd092$0$31989$edfadb0f@dread12.news.tele.d k...
>> > Hi
>> >
>> > How can I measure the speed in a RC racing boat ??
>> >
>> > Soren
>> > Denmark
>> >
>> Set up buoys at 20, 30, 40 or more meters apart, on a course fitting your
>> maximum speed (broad reach?)
>>
>> then speed in KPH = number of kilometers traveled divided by hours
>traveled.
>> So if ten meters in 20 seconds, .01/(3600/20) = 1.8 KPH
>> if 20 meters in 20 seconds, ,02/(3600/20) = 3.6 KPH
>>
>> And just to test the formula
>> if 500 meters in 20 seconds, .5/(3600/20) = 90 KPH
>>
>> Wayne
>> www.modelsailcars.com
>>
>> >
>>
>>
>

[forresterace]

Most RC boat racers that I'm aware of (especially fast electric ones) are using an onboard GPS device to measure boat speed. The make and model of choice seems to be the eTrex by Garmin.
I understand that it can be had for around $120.00 US.

see- www.garmin.com


Doug Forrester
Forresterace Designs

[Barry]

we use GPS in our club for our petrol powered boats

Barry
"forresterace" <forresterace.jl2tz@rcgroups.com> wrote in message
news:forresterace.jl2tz@rcgroups.com...
>
> Most RC boat racers that I'm aware of (especially fast electric ones)
> are using an onboard GPS device to measure boat speed. The make and
> model of choice seems to be the eTrex by Garmin.
> I understand that it can be had for around $120.00 US.
>
> see- www.garmin.com
>
>
> Doug Forrester
> Forresterace Designs
>
>
> --
> forresterace - Maker of Sawdust
>
> Doug Forrester
> FORRESTERACE DESIGNS
> --------------------------------------------------------------------------
---------
> Posted from the RCGroups.com Discussion Forums.
> Visit us at http://www.rcgroups.com <------- Win free R/C Gear!
> View this thread at rcgroups.com:
http://www.rcgroups.com/forums/showthread.php?threadid=95622
>