G.p.s.

[Thunderbutt]

If you where going to use a GPS instead of a speedo which one is the best?

[1978 Rogers]

I think any of the hand held ones are even reliable. As long as you are out in the open and not going through a narrow canyon or have trees hanging over head. GPS are very accurate now. The need to recieve a min of 3 satellite signals. There great if you want to use one to see how fast at WOT you go. The more expensive ones have bigger displays, more waypoints, larger memory & programable or have built in maps. It really depends what you want to use it for. All the basic models will give your a compass direction and speed. Some even record distance traveled. Magellen makes a nice one for $100.

[Jerrys59]

I use a Garmin hand held. Works great for me.

[HammerDown]

I've found in a 1/4 mile pass it takes the hand held GPS an extra 8-10 seconds to find the true speed. That being said my boat speedo is dead nuts on with my T-Rex GPS. Well within in a 1/2 mph reading.

[Danhercules]

I've found in a 1/4 mile pass it takes the hand held GPS an extra 8-10 seconds to find the true speed. That being said my boat speedo is dead nuts on with my T-Rex GPS. Well within in a 1/2 mph reading.
Be sure you have the setting right on the hand held. Most of them have a batter save mode. The signal is not as often. the regular mode is much quicker.

[jackpunx]

Be sure you have the setting right on the hand held. Most of them have a batter save mode. The signal is not as often. the regular mode is much quicker.
where do you find this mode?... I have the same issue on my boat with the handheld..
and I have a Lavorsi installed on my boat that acts the same way..
the GPS cant handle the accelleration..
as Im letting off.. my GPS is still climbing.. If I stay in at a consistant RPM .. it takes about 4-8 seconds for the GPS to catch up.
My manual speedo was right on up to about 65 mph.. after 65 it was off 3mph on either side..

[1978 Rogers]

Remember the main perpose of a GPS is to pin point a location in space. To use it for speed, a logarithium has to do calculations. So they might take a few seconds to catch up to whats happening in real time.

[spectras only]

I've got the Gaffrig GPS with tattle- tale recall . It moves up/down as you go. Of course my boat isn't as fast as Jackpunx' :idea:

[texas-19]

I have the garmin legend hand held.I compared it to my truck speedometer and was very close even when speeding up or slowing down.Was within 1 to 2 seconds.

[HammerDown]

Sorry, what I ment to say in my above post was...it taked the GPS several seconds to (catch up) with my boats speedo :wink: