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Minn Kota Endura C2 30Lb Thrust Need Faster Prop With Less Torque...


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Hello. My el cheapo c2 has a stock 2 blade that has a touch too much "get up and go" but not enough hi speed cruising. I have a 3.6mph top speed now that I'd like to increase a little while decreasing the initial "jerk" when applying power.

I know about props and pitch, there just seems to be little info given on these parameters when shopping. They all wanna talk about "weedless" and "more speed and power".

I want a faster top speed and less acceleration. I'm on a 100lb vessel and I'd like to go a little faster.

Thanks.

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  • Super User

You may be able to find a prop that might get you 0.1 or 0.2 mph out of that 30lb thrust TM, but why ?

 

That unit isn't really going to be able to give you much more than that unless it's mounted on a skateboard.

 

A-Jay

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I'm thinking you want to stay with 12 volts, so buy the Minn Kota or Motor Guide 55 lb thrust transom mount, variable speed and be done with it.  BPS 2015 Master Catalog lists either one of them for less than $300.   If you've never had a variable speed trolling motor before, you will be stunned, both with how you can crawl at very low speeds and how you can accelerate to faster than you're going now with none of that herky-jerky stuff.

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Thanks fishes in trees. I was thinking of going with the 40lb with the variable motor. I will consider 55lb though. I've read that the thrust doesn't really equate to a faster overall speed though, so naturally I was thinking prop pitch instead.

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In fact two 55 pound thrust motors will not move you any faster than one 30 pound thrust motor. Higher thrust 12V trolling motors are designed for bigger heavier boats with larger payloads. The maximum speed of a trolling motor is 5 mph regardless of how many pounds of thrust.

-what i found on the webs.

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My experience was that a charge lasted much better with a 55 lb thrust motor than a 30. I will never go back. It was worth the extra money. (This applies to stern mount motors, I can't afford a bow mounted motor right now.)

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In fact two 55 pound thrust motors will not move you any faster than one 30 pound thrust motor. Higher thrust 12V trolling motors are designed for bigger heavier boats with larger payloads. The maximum speed of a trolling motor is 5 mph regardless of how many pounds of thrust.

-what i found on the webs.

 

i dont think thats correct..... for the local electric only lake, a friend of mine has a 15' glass boat with a 70lb 24V motor, and i have a 12' tin with a 36V motor... his boat, being a lot heavier than mine, goes really fast, dont know the numbers but he leaves me way behind... he can also go against current and wind when i have to anchor or drive to the bank and wait for the wind to stop a little,,,. so its faster AND stronger...

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I agree with Keeper. On my 15 foot Polar Kraft I ran two Minn Kota 55 Enduras.  You would definitely know when the second tm was kicked on.  I ran 4 batteries ( two batteries per trolling motor) in the boat. the boat's speed did not quite double, but it went from 3.6 to 5.7 mph read by the Hummingbird GPS.  I ran that boat on our electric only reservoirs here in MD. 

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minnkota 55lb thrust. i would never get a 30 when the wind picks up it just doesnt cut it. with the 55 i am able to clamp it on and go regardless.

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Thanks fishes in trees. I was thinking of going with the 40lb with the variable motor. I will consider 55lb though. I've read that the thrust doesn't really equate to a faster overall speed though, so naturally I was thinking prop pitch instead.

Thrust does equal SPEED. You have to push water rearward to move the boat forward.

Prop speed, prop pitch, number of blades, and prop diameter determine how much water is moved.

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If you're looking for a different prop pitch for a TM there aren't very man options out there. Mainly because most don't care about a 0.1 difference in speed. However, there's one aftermarket company that I know of that makes a prop that can help increase speed http://www.kipawapropellers.com/. I've heard mixed reviews on them though. Many have said they do what they say, but there have been a number of TM's burnt up because of them. Also, I don't think either Minnkota or Motorguide will warranty their motors if one of these props is used. 

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Thanks for the replies. I put my endura max 45 variable thrust on with a mkp prop and I barely gained .5 mph. I'm at about 4ish mph now. I'm gonna put the stock prop back on and see how well it does . The mkp6 is a "power " prop...even though they don't list pitch on any of these to know what is power vs speed.

 

The variable is awesome. The 45 is actually quieter than my 30.

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  • 8 years later...

Thrust / horse power never equals speed. Not with cars,trucks, planes, or boats. Why is it a sports car with 200 hp can pass an 18 wheeler with 1300 hp?  In cars speed is gained with gearing. In planes and boats it’s done with prop pitch.  The pitch on a prop is the number of inches the boat moves forward for every revolution. If you are getting more speed with a bigger motor or multiple motors it’s because the original motor is too small for the weight of the boat and gear. The motor is over worked and cannot turn full rpm’s by itself.  In the case of a trolling motor, this could cause over heating and hot wires or even a fire. In order to increase speed on a boat you need to increase prop pitch, but not so much that you reduce engine rpm as this will slow the boat. In order to tow another boat or push a log raft you need to put a lower pitch prop on. (called a work prop)  The number of blades is also irrelevant A four blade 7 pitch prop will not go any faster than a 2 or 3 blade 7 pitch prop, but it will push a bigger load at that speed. (If it has enough engine or thrust to do it) because it bites  more water, It will push or pull a bigger load provided you have enough horse power or thrust to handle that bigger load.  That being said what makes anybody think the pitch on a 30lb thrust motor is the same as the pitch on a 55 or 80lb thrust motor??  More power means it will push a higher pitch prop.  Trolling motors have little to no choice for prop adjustment. Hence the poster who got better battery life from a bigger motor got it because the smaller motor was overworked.  Savvy??          Alaskan River Rat

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Lotta guys who own OT Autopilots have gone (or tried) the airplane prop route for a tad bit more top end speed. Simple and cheap. I have the OT 106 with the same 45 and it gets me all over the place, through just about any situation with no issues whatsoever, stock prop.  

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On my MK 12v 55# thrust bow mount, I don't fish weeds at all.  Based on MK factory recomendations, I switched to a non weedless prop for mine and is supposed to give another .5 mph or so but better thrust.  By the time the prop arrived, so did winter, so will see this spring when the weather breaks.  However, I did do some measuring and the power prop does have a little greater pitch than the weedless so I am hopefull !!  

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22 hours ago, airshot said:

On my MK 12v 55# thrust bow mount, I don't fish weeds at all.  Based on MK factory recomendations, I switched to a non weedless prop for mine and is supposed to give another .5 mph or so but better thrust.  By the time the prop arrived, so did winter, so will see this spring when the weather breaks.  However, I did do some measuring and the power prop does have a little greater pitch than the weedless so I am hopefull !!  

If that doesn't, there are trolling motor props made by APC Propellors (an RC airplane prop company) that you can use.  I bought one (for about $10), and I don't remember the exact gain in speed, but it was significant.  Just make sure to get the ones made for trolling motors, as they're left-handed and have the right shaft dimensions and whatnot.  

 

Of course, that depends on the amount of weight you're pushing.  I'm fishing from a kayak at around 300 lbs., so I don't need the torque, even on my Endura C2 30.  

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No experience here, but just from reading in my own research, the airplane props worked best on light loads like kayaks.  Not as sucessfull on heavier boats. But for the low cost, might be worth a try....

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