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I want to map a lake using a transducer attached to my trolling motor. But to save time, i need to use my main motor to do it.
So trolling motor is deployed with main motor running 5 mph?
Will the prop spin backwards and damage the unit?
I can remove the prop i suppose. But reattaching prop on the lake would be tough.
Thanks
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A motor becomes a generator in this case. What trolling motor do you have?
You u could strap the prop in a fixed position with a bungee cord.
This could cause some water turbulence near the transducer. Try it.
If your trolling motor is a Minn Kota power drive or terrova (may work on other models), pull your motor back in the boat with the prop up. It will wedge
in the yoke of the base. Slide the locking collar down to it and tighten. It will stay like in a vise. Replace sheer pin and prop.
Xi5, motorcraftQuote:
Originally Posted by Cane Pole
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Sorry, i don't understand what you're saying here.Quote:
Originally Posted by stormcloud
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Motor guide, not motor craft!
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Removing the prop will prevent it from having any generator effect
I would not trust free spinning a prop on a digital controlled motor. If it were a plane jane tm, then it wouldn't hurt anything, but you might could loose a prop. Ask me.
I've done it with my xi5 before, I just run the trolling motor at about half speed keeps the trolling motor shaft from bending back under the boat so much, doesn't use much trolling battery power up cause it's not pulling.
Good ideaQuote:
Originally Posted by Central Minn
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How fast were you going with the big motor?Quote:
Originally Posted by brettw
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3-4 mph idle speed with the big motor.
WHEN trolling with big motor, I use the trolling motor to steer the boat up to 2.5 -3 mph. Works good. Lernt this from my pal Jeff White in early 2000's.
When I first got my boat I had a kicker motor on there and used the trolling motor to steer .... til I found out that with my 24V
terrova on my tin boat I can go 5 mph with the big motor trimmed up out of the water.
So .... i just got a couple 12V golf cart batteries and ditched the kicker motor. When those batteries go bad I'm going to upgrade to LiFePo and be done with it. I'm learning to build my own now and can do it for cheap.
So you have the big motor running too?Quote:
Originally Posted by Cane Pole
Sit upfront?
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yes. i put the big motor center strait. I control direction with the trolling motor. Doesn't take much power for the tm to steer the boat l/r. Sometimes if I want to slow the big engine speed down, I reverse the the direction of the trolling motor.Quote:
Originally Posted by brettw
You still steer the boat with the big motor running, but to turn, you aim the trolling motor in the opposite direction.
If your big motor speed is 1.5 mph, reversing the trolling motor speed will subtract from that speed. It doesnt take much to slow the boat. This saves tm batteries drain.