Check GPS speed - error message

Steve_B · 20 August 2010, 18:22

I have the smartcraft display that comes as standard with the Verado's.

Intermitantly, (usually after a bit of a blast) the warning message, see above, flashes on the display. I have gone through all the options, but cannot find the problem.

Any ideas? There must be some sort of error as it gives my peak speed as 1437kts, now whilst she's fast, not THAT fast!

Steve

Poly · 20 August 2010, 19:53

Quote:

Originally Posted by 250kts

my peak speed as 1437kts,

You want to get that in the marketing literature and put your prices up!

Steve_B · 20 August 2010, 19:57

BogMonster · 20 August 2010, 22:43

I'd heard of a Zodiac Mach 2 but never a Parker Mach 2

jyasaki · 21 August 2010, 13:40

connection problem between the GPS and the rest of the network?

Don't know why it would read a wacky speed rather than just drop out, though.

jky

Chris · 11 September 2010, 22:19

could be a bad gps aerial

Steve_B · 07 October 2010, 21:44

Got a solution for this problem from Barrus at the boat show.

On a twin engine set up, the speed information must only come from the GPS at all speeds.
If paddle or pitot is selected, it gets confused!
Reset and all is fine now.

9D280 · 14 October 2010, 12:54

I got a recorded 302 knts Max speed on the garmin down the slip at Largs a couple of years ago.

On investigating the "snail trail", it had momentatrilty lost the place and thought I was half a mile up the hill behind the marina. I guess to get there & back to the slip in the sample time for the speed calc I would need to have been doing 302 knts...... I guess my old garmin doesn't have a sanity check on it's positional error.

I've seen that a couple of times since, but not quite as spectacularly as that. Apparently I can walk at 48mph too! It's only the Vmax record that gives it away.