speed sensor question

**J White** · 01-26-2008, 02:11 PM

I've heard so much lately about gps speed not being accurate at slow
trolling speeds, believe I've even witnessed it myself - for example going
one way against the wind, pulling cranks, rod tips vibrating, then turn around
with the wind, same gps speed, and tips go dead. Tells me speed is different,
no matter what gps says...

Anyway, I'm wanting to experiment with modifying a paddlewheel speed
sensor myself like I've read about some folks doing, larger wheel and
better bushings, or maybe even bearings.

My particular question deals with a 700 series Humminbird - can you buy
a paddlewheel for it? And if so, can you display it AND gps speed on the
screen? or only one or the other? I'm lost, help! Jeff

**WarrenMN** · 01-26-2008, 03:35 PM

GPS speed won't be accurate if your fishing a current. Here's a link to their speed sensor

http://store.humminbird.com/accessor...d730021-1.html

I think its one or the other and I wouldn't modify it.

WarrenMN

**ShilohRed** · 01-26-2008, 03:54 PM

Jeff I think you need one of the hang over the sides and has a big wheel on it. That may work for you.
If you look at times you can buy the paddle wheels for the humminbird on E-Bay at a good price.
Also good luck tomorrow. I hear you going Fishing
Pete

**Cane Pole** · 01-26-2008, 04:27 PM

My son had one of these (on my boat). They are good and accurate. Price gone up a lot though. It is a paddle wheel dealie. Pretty accurate and easy to read. Keep buying and adding. You gonna catch up with me.

I think I mentioned this before. I can't remember. I been in the closet too long. Painting....:p

http://www.cabelas.com/cabelas/en/te...&cm_ite=netcon

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