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-   -   why do our speedometers read so high? (https://www.offshoreonly.com/forums/baja/113884-why-do-our-speedometers-read-so-high.html)

BajaRunner 10-07-2005 09:01 AM

why do our speedometers read so high?
 
Mine in the 36 reads 100, but it will only do 70. Im thinking about a gps speedo, but a 0-80 instead of 0-100.

Why do they put them in so high? I would rather see one almost peg than go half way. maybe its cooler at the docks when people see you have a 100 mph speedo??

kennyo 10-07-2005 10:39 AM

Re: why do our speedometers read so high?
 
The cheapest way for them to reach 70 mph is to tweak the speedo's by 10-15 mph to the high side.

Dock Holiday 10-07-2005 10:54 AM

Re: why do our speedometers read so high?
 

Originally Posted by kennyo
The cheapest way for them to reach 70 mph is to tweak the speedo's by 10-15 mph to the high side.


????????????????????

What are you talking about?

32 caliber 10-07-2005 10:58 AM

Re: why do our speedometers read so high?
 

Originally Posted by kennyo
The cheapest way for them to reach 70 mph is to tweak the speedo's by 10-15 mph to the high side.

You misunderstood what was said....the face on the speedo goes to 100, but the boat only runs 70, so hence..no need for a speedo that can go up to 100 when the boat doesn't. Kinda like putting a 200mph speedo in a KIA

Dock Holiday 10-07-2005 11:01 AM

Re: why do our speedometers read so high?
 
1 Attachment(s)

Originally Posted by BajaRunner
Mine in the 36 reads 100, but it will only do 70. Im thinking about a gps speedo, but a 0-80 instead of 0-100.

Why do they put them in so high? I would rather see one almost peg than go half way. maybe its cooler at the docks when people see you have a 100 mph speedo??

Not really sure why they do that. It may look more impressive, or maybe they think everyone is going to add a blower and need it.

Guess it boils down to personal choice, get what suits you best.

BAJA342 10-07-2005 01:24 PM

Re: why do our speedometers read so high?
 
Dock,
Nice picture in the Baja mag.

BajaRunner 10-07-2005 01:26 PM

Re: why do our speedometers read so high?
 
Hey dock, did you add that cupholder or did it come that way. my 2000 doesnt have a cup holder for the driver

Dock Holiday 10-07-2005 01:39 PM

Re: why do our speedometers read so high?
 

Originally Posted by BAJA342
Dock,
Nice picture in the Baja mag.

Thanks very much! :D

I have not seen the new magazine yet, but hear it is the picture from last year.

Maybe they will have this years photo's in the next issue.

Dock

Dock Holiday 10-07-2005 01:40 PM

Re: why do our speedometers read so high?
 

Originally Posted by BajaRunner
Hey dock, did you add that cupholder or did it come that way. my 2000 doesnt have a cup holder for the driver

The hole was already there with the plastic cup holder. I just exchanged it with the billet holder. There is "NOT" one on the passenger side front and the wife does not like that.

carney 10-07-2005 02:08 PM

Re: why do our speedometers read so high?
 

Originally Posted by Dock Holiday
The hole was already there with the plastic cup holder. I just exchanged it with the billet holder. There is "NOT" one on the passenger side front and the wife does not like that.

you had better get out the hole saw and get to work. there is nothing worse than a mad cat.

BajaRunner 10-07-2005 02:13 PM

Re: why do our speedometers read so high?
 
I dont have one on either side :(

BajaRunner 10-07-2005 02:13 PM

Re: why do our speedometers read so high?
 
My area where yours is, is angled too much.

articfriends 10-08-2005 10:57 AM

Re: why do our speedometers read so high?
 
1 Attachment(s)
The speedos go to a 100 because it makes them look sportier,just like the old transam's that had 160mph speedo's! The real question is why do they always read 3-7 mph too fast,it makes all these guys with 62-67 mph boats think they run into the 70's,especially the single engine boats!Smitty

Dock Holiday 10-08-2005 07:12 PM

Re: why do our speedometers read so high?
 

Originally Posted by articfriends
The real question is why do they always read 3-7 mph too fast,it makes all these guys with 62-67 mph boats think they run into the 70's


Wish I had gotten one that just read 3 MPH faster, much less 7 MPH!!!

Cannot say I have ever run across one that was 7 MPH fast?

In the 212 Islander in was within 1 MPH to the GPS, the 272 Boss was actually 1 MPH slower than the GPS and the one in the 36 was "Dead Nuts On". I would not have replaced it if it had read faster! :drink:

BajaRunner 10-08-2005 08:06 PM

Re: why do our speedometers read so high?
 
I think the gaffrigs are pretty damn close. My 29 showed 30mph on the speedo and the gps showed 36.

I sent it in to gaffrig, told them to speed it up a little, it came back dead nuts. I told them to make it 5mph fast but they wouldnt.

My brothers faria gauge shows his 25 outlaw with a 496ho going 78mph, gps shows 66.

Dock Holiday 10-08-2005 08:11 PM

Re: why do our speedometers read so high?
 

Originally Posted by BajaRunner
My brothers faria gauge shows his 25 outlaw with a 496ho going 78mph, gps shows 66.

:eek: :eek: :eek:

12mph?

customtouch 10-08-2005 11:54 PM

Re: why do our speedometers read so high?
 
Ask him how much he wants for the speedo!!! I'll buy it!!!! :D :D

articfriends 10-10-2005 01:17 AM

Re: why do our speedometers read so high?
 
Back when my boat was stock(272 baja) it read 66 mph on the gaffrig speedo but actual was 62.5 on gps. I hear the dealers drill the pitot tubes to make them read higher,Smitty

US1 Fountain 10-10-2005 04:38 PM

Re: why do our speedometers read so high?
 
why would drilling the pickups make any difference? Speedos work with water/air pressure, not volume.
My gaffrig is right on until the last 10 mph, then it gains some MPH over my GPS. I just figure the higher quality speedos are more accurate because the speedo itself is a more accurate air pressure gauge, which is all they really are.

haulinvols 10-10-2005 04:44 PM

Re: why do our speedometers read so high?
 
Mine is pretty close till I get over 50. Then it is off about 8 mph. It is a Livorsi.

mjmbodine 10-11-2005 11:12 AM

Re: why do our speedometers read so high?
 
Well I would think they (Baja) and other boat builders buy speedos and other gauges in bulk like everything else so they buy 100 MPH then if you get big power say a pair of 900 hp motors then it might do close to 100 MPH.

JS232 10-11-2005 12:01 PM

Re: why do our speedometers read so high?
 
Mine is a Gafrig Livorsi and is inacurate by 0.5 mph... Witch is the best I have ever seen.

However, my pre-boat add a Faria gauge and was off 5-7 mph...

Go figure... :eek: ?

Wild Card 09 11-28-2005 12:33 PM

Re: why do our speedometers read so high?
 
I also have the monster Gaffrigs on my 25 and every time I get the handheld GPS out I wonder why I bothered! How can a gauge be so accurate? I have to say that ALL of the monster gauges seem to be that good. Trim gauge is perfect. No needle bounce or even a flicker from any of the others. Absolutely the business!
However, you are so right - these 100 mph speedos where you are not even halfway through at 67 are really frustrating. Time for a blue motor :evilb:

liquid asset 11-28-2005 01:23 PM

Re: why do our speedometers read so high?
 
My monster gauges have ussally been pretty damn close.
Liquid


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