Welcome to BoatingForumz.com!
FAQFAQ      ProfileProfile    Private MessagesPrivate Messages   Log inLog in

Anyone know PSI to MPH speedometer factor?

  
   Boating Forums (Home) -> Boat General Discussion RSS
Next:  Do brand new boats depreciate as quickly as new c..  
Author Message
Gudmundur

External


Since: May 16, 2005
Posts: 35



(Msg. 1) Posted: Sat Sep 10, 2005 1:18 am
Post subject: Anyone know PSI to MPH speedometer factor?
Archived from groups: rec>boats (more info?)
Looking for 'how many PSI of pressure in the pitot tube equal
how many MPH indicated speed on my speedometer.

I have a very accurate source of air pressure and want to test
my speedometer to get an idea of how well it's in calibration.

TNX folks!

 >> Stay informed about: Anyone know PSI to MPH speedometer factor? 
Back to top
Login to vote
Woodchuck1

External


Since: Jun 28, 2004
Posts: 74



(Msg. 2) Posted: Sat Sep 10, 2005 1:18 am
Post subject: Re: Anyone know PSI to MPH speedometer factor? [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
70mph=70psi. 100mph is around 120psi. It's not linear.


"Gudmundur" <hexter.DeleteThis@blazenet.net> wrote in message
news:11i4d36jm89mpda@corp.supernews.com...
> Looking for 'how many PSI of pressure in the pitot tube equal
> how many MPH indicated speed on my speedometer.
>
> I have a very accurate source of air pressure and want to test
> my speedometer to get an idea of how well it's in calibration.
>
> TNX folks!
>

 >> Stay informed about: Anyone know PSI to MPH speedometer factor? 
Back to top
Login to vote
offen rong

External


Since: Jul 11, 2005
Posts: 2



(Msg. 3) Posted: Sat Sep 10, 2005 3:27 pm
Post subject: Re: Anyone know PSI to MPH speedometer factor? [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
"Gudmundur" <hexter.RemoveThis@blazenet.net> wrote in message
news:11i4d36jm89mpda@corp.supernews.com...
> Looking for 'how many PSI of pressure in the pitot tube equal
> how many MPH indicated speed on my speedometer.
>
> I have a very accurate source of air pressure and want to test
> my speedometer to get an idea of how well it's in calibration.
>
> TNX folks!
It's easier to use a GPS unit to calibrate your speedometer.
 >> Stay informed about: Anyone know PSI to MPH speedometer factor? 
Back to top
Login to vote
Gudmundur

External


Since: May 16, 2005
Posts: 35



(Msg. 4) Posted: Sun Sep 11, 2005 2:17 am
Post subject: Re: Anyone know PSI to MPH speedometer factor? [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
In article <AqGUe.189$906.17@bignews4.bellsouth.net>, offenrong RemoveThis @member.org
says...
>
>
>"Gudmundur" <hexter RemoveThis @blazenet.net> wrote in message
>news:11i4d36jm89mpda@corp.supernews.com...
>> Looking for 'how many PSI of pressure in the pitot tube equal
>> how many MPH indicated speed on my speedometer.
>>
>> I have a very accurate source of air pressure and want to test
>> my speedometer to get an idea of how well it's in calibration.
>>
>> TNX folks!
>It's easier to use a GPS unit to calibrate your speedometer.
>
>
Got the laptop charged and ready for tomorrow. My GPS is powered from
the laptop serial port and Precision Mapper 3.0 GPS-Link shows my speed
over land, so I will have a look at the calibration of the speedo and my
pitot positioning on my boat.

This is an old AirGuide speedo removed from my father's old wooden
runabout and this speedo last saw daylight about 1967. I cleaned and
lubed the unit and installed it on my 15ft FourWinns open bow.
Just a little piece of boating nostalgia put back in service. To bad
dad is no longer around to see it go. (probably twice as fast as he
ever saw it going).
 >> Stay informed about: Anyone know PSI to MPH speedometer factor? 
Back to top
Login to vote
Display posts from previous:   
Related Topics:
New v8 boats forum - Hi Just to let you know a new V8 boats forum has started today. Check it out at www.v8owners.com You will need to register (free of charge) and then use the forum titled V8 powered boats. Go and have fun. regards, Richard

yup, anchors are supposed to take out other boats ... - yup, anchors are supposed to take out other boats ... killing other people, or at least seriously damaging their property. let those clowns who believe that rot in jail. where they belong, for they are part of the criminal element of today's society.

Starter Search - My starter died - so I went to AutoZone to get a new one. I had them cross-reference a 68 Mustang, since it had the comparable 427 engine. I installed it yesterday, and the thing turned beautifully. This morning I tried to fire it up, and gas came..

Threw a rod? - Hello all, I have a 1993 Yamaha Pro V 150 on my Ranger 354V bass boat. I was running today , probably about 10 minutes straight at about 3/4 throttle, when all of a sudden (I don't know a whole lot about outboards) it sounded as if I had thrown a rod..

Big John - To the tune of "Big John" Every mornin' on the Hill you could see him arrive Standing six-foot-four, weighing one-twenty-five Kinda' scrawny at the shoulders and lacking a spine And when he spoke at all, it was mainly ...
   Boating Forums (Home) -> Boat General Discussion All times are: Pacific Time (US & Canada) (change)
Page 1 of 1

 
 You can post new topics in this forum
You can reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum



[ Contact us | Terms of Service/Privacy Policy ]