Yahama Speedometer

[dduflo]

I have twin 2005 Yamaha 225s. The pickup for the speedometer is in the lower unit. Is there any way to adjust it? Contunually reads a couple miles slower that the GPS and I'd like to sync them. I understand the difference between speed over bottom and speed through the water. Currents are not an issue.
Any ideas?

 

[plymouthgrady]

Get a straitjacket- cause you're gonna go crazy trying to synch em'. It's the same on my 250 SWS II. 1.5-2 mph slower on the yami gauge.

 

[JUST-IN-TIME]

u can drill out the speed a little, LOL

we did that cause the sales guy said it was a 35mph boat and it really was a 30mph boat

so a little drilling and bang 35mph boat, :lol:

 

[seabob4]

Forget your speedo, go with your GPS, and have a beer and relax!

 

[catch22]

I thought "syncronizing" twins meant rpm's?.... lol.
The difference in the speedo's might be because of a kinked hose, obstuction, or who know's. I agree with what seabob4 said. I wouldn't be concerned about there accuracy.

 

[NOTHING ELSE MATTERS]

Are those gauges NMEA ready? If they are, just connect it to your GPS NMEA out.

By the way, mine are too, but i go with the beer option.

 

[pablor]

after a power wash of the bottom of the boat mine always read 30-37mph when going 5-10 mph. what do i need to clean out on a trip yam 250 config?

 

[seasick]

Yami, GPS, FF with speed transducer:
They all read differently. I trust the GPS at speed. I use the FF speed indication for slow speed (trolling etc) operation. I don't even look at the Yami gauge for speed.

 

[Parthery]

Remember that, even if the pickup is clean, there will be a slight difference in the speedo and the GPS. Your GPS measures speed over the ground...the speedo measures speed through the water, and current, etc... will be included. Hence, the difference.

 

[plymouthgrady]

you can also pick how you want your speed displayed. Speed over ground, SOG -Speed over water, SOW, KNOTS & MPH

 

[seabob4]

Don't worry about your speedo, just pay attention to your GPS. As a matter of fact, dump the speedo and figure out something better to fill that 4" hole.

One of the cool things about Suzuki and Evinrude gauges. They use GPS to display speed.