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| Speed sensor https://www.smwebhead.com/phpBB3/viewtopic.php?f=20&t=13720 |
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| Author: | GI Auz [ Sat Jan 10, 2015 10:17 pm ] |
| Post subject: | Speed sensor |
Where are the sensors for the standard in-dash speed gauges? |
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| Author: | deafwish [ Sun Jan 11, 2015 3:10 pm ] |
| Post subject: | Re: Speed sensor |
Usually on the transom. Either an electronic paddle wheel, or a pitot tube. |
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| Author: | JeffLW [ Sun Jan 11, 2015 3:50 pm ] |
| Post subject: | Re: Speed sensor |
What engine/drive do you have? I know on the Merc B3 it is in the outdrive. |
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| Author: | GI Auz [ Mon Jan 12, 2015 7:12 am ] |
| Post subject: | Re: Speed sensor |
B3 - yeah the mechanic says the water is brought back into the boat from the drive and up to speed sensor in dash. Very WW2. |
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| Author: | JeffLW [ Mon Jan 12, 2015 11:55 am ] |
| Post subject: | Re: Speed sensor |
Yep there is a hole on the leading edge of the drive. If it gets blocked the speedo doesn't work. Also there is a hose that connects from the boat to the drive. If this is damaged or disconnected = no speedo worky. My mechanic always forgets to hook this back up when he pulls the drive.  Luckly it is easy to connect, even in the water if you don't mind getting wet.
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