souping up trolling motor

[chuck_long]

I have a Minnkota 46 lb thrust motor on a mini-bass boat. Though that is plenty of power, max speed is about 5 miles per hour with the standard weedless wedge propeller. I have been looking around to no avail. Does anyone out there know of a propeller that would fit this electric motor and give greater speed? It has a 3/8" shaft, about 1" long between the cross pin and the threaded part of the shaft. Or is there a 3/8" shaft propeller that could be modified? The Minnkota propeller has a 3.5" round body, and overall is about 2.25" thick, with total (fins) diameter of about 11".

 

[Hooty]

Re: souping up trolling motor

Dang Chuck, I don' know. That's right up there with souping up an electric leaf blower. I guess, if ya got plenty of power, you could take the prop to a prop shop and have more pitch put in but get ready for some real serious ribbin'.<br /><br />c/6<br /><br />Hooty

 

[Boatist]

Re: souping up trolling motor

Chuck<br />I think if I needed more than 5 MPH I would uses main motor.<br />Best bet probably to get a higher thrust motor. Could try bigger wire for less voltage drop. <br />May try calling these sites Good luck.<br /> https://www.trollingmotorparts.com/MinnKotaProps.htm <br /> http://www.northlandmarine.com/MinnkotaVanishingProp.htm <br /> http://www.iboats.com/mall/index.cg..._id=227842939&current_category=trolling motor

 

[steelespike]

Re: souping up trolling motor

Chuck,trollers are not designed for speed.<br />They are built for quick acceleration and power.<br /> Kind of like a prop for hole shot and skiing.<br /> It will be difficult to find props for other uses.<br />You might try adapting a prop from a bigger motor<br /> But I have a feeling it will top out very close to where you are.<br /> By the way at 5 mph you are close to the max<br />on a purpose designed electric boat.<br /> Electric boats can be built to go faster but at <br />a sacrifice of cruise range.And expense.<br /> Try this site.www.econogics.com/ev/evboats<br /> Lots of electric boat stuff.Including an electric outboard.<br /> Interesting.

 

[chuck_long]

Re: souping up trolling motor

Thanks, all, for the replies. <br />Hooty - Yeah, but you should see MY electric leaf blower!<br />Boatist - Thanks for the effort, but I'd already tried all those before posting here. <br />steelespike - thanks for the link, looks interesting! I'll check it all out...but as you say likely to be a bit on the expensive side for puttering around on "electric motor only" fishing lakes. I'm not looking to pull a skier, just goose the speed by maybe double.

 

[steelespike]

Re: souping up trolling motor

Chuck your sure not likely to double your speed<br /> You might try the motor on a nice long (16 ft or more)slim boat like a canoe or some sort of pulling boat (used for rowing.)Youll<br /> see a very nice old style fantail launch on<br />the electric site I think it is 19 ft and it reaches its designed hull speed 4-5 mph on only 1/2 hp.<br /> Of course your problem is the same as it was, your motor isnt designed for speed.But with the right hull you can get the most out of it.

 

[roscoe]

Re: souping up trolling motor

How about this?<br /><br /> http://www.psnw.com/~jmrudholm/etekoutboard.html <br /> http://www.psnw.com/~jmrudholm/etekoutboard2.html <br /> http://www.psnw.com/~jmrudholm/etekoutboard3.html <br /> http://www.psnw.com/~jmrudholm/etekoutboard4.html <br />An 1175 pound boat, electric powered, at 10 mph!!

 

[flatsman]

Re: souping up trolling motor

Are ya having a hole-shot problem ?? Maybe ya shouldn't be water sking in shallow water!!!!!Hey ya could use 36 volt boost ---that'll get it jumping .....yee haw

 

[slow_boat]

Re: souping up trolling motor

Sounds like a project for Sloopy