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  1. #1
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    Question Is a 80 pounds ultrex big enough?

    Hey guys, I would have a great deal on a 80 pounds ultrex, i have a 19.5 feet boat, any body has a similar setup?
    Im not sure its strong enough? I fish the St-Lawrence(current) a lot!

    thanks
    Nitro z20 2021 with 250 Mercury Pro XS 4 stroke serial # 3B010400

  2. Member
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    #2
    Will the 80lb work? Sure it will, but I’d opt for the 112lb-36v if it’s within your budget. What’s your current setup?
    2019 Nitro Z19 - 2019 Mercury 200LPXS (2B574151)

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    #3
    I have a 101 Fortrex now, i used to have a 80 pounds wich was OK but i'm worried about being able to actually use the Spot lock in the current with the 80.
    Nitro z20 2021 with 250 Mercury Pro XS 4 stroke serial # 3B010400

  4. BBC SPONSOR/ Shallow Water Anchors Moderator
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    #4
    The issue is not if it's enough thrust the issue for you being on st lawrence is longevity at only 24 volt. You really need go w a 36 volt trolling motor.

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    #5
    Rule of thumb I go by for boat length and trolling motor size. Under 17' 12 volt TM , 17-19' 24v TM , 19' and bigger 36v. I would want a 36 volt trolling motor on a 19.5' boat.

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    #6
    Ditto. 112 motor is the ticket. you should be more than happy with that especially with you having a 101 already.

  7. Member fishnfireman's Avatar
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    #7
    i'm worried about being able to actually use the Spot lock in the current with the 80
    .
    In that case----go with 36 volts.

  8. Member
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    #8
    I fish the same waters you do. I had a 20 foot boat (aluminium ) with both a Fortrex 101, an Ultrex 80 and an Ultrex 112 ( now). I used Spot Lock with both the 80 Ultrex and the 112 Ultrex with success in current. When moving from one place to another I needed to put the 80 about one number or two more than the 112 ( ex: 6 for the Ultrex 112 would equal 7 or 8 for the Ultrex 80 ) to get the same speed. Because of that, I used more of the battery power during the day but I had enough in both cases. I was a bit close with the 24 volt system sometimes, when there was wind. That great deal on the 80 is interesting but if you can get a 36 volt ( and if you have a 101 Fortrex you have the room for 3 batteries) I would go with the 36 volt Ultrex.

  9. Member Tom B's Avatar
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    #9
    always ran a 80lb fortrex on my z119 - upgraded to a 36v ultrex this year with lithiums. was up st Lawrence for a week and on the day I used it the most my 50ah lithiums got down to 25% on a 10 hour day

    would definitely recommend 36v up there

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    #10
    If you're getting a good deal on the 80 i wouldn't hesitate to buy it. Ultrex are hard to find right now. You can always upgrade latter and easily sell the 80.

  11. Member
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    #11
    to answer your question, yes 80 should do just fine.

  12. BBC SPONSOR/ Shallow Water Anchors Moderator
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    #12
    Quote Originally Posted by fynns View Post
    to answer your question, yes 80 should do just fine.
    guess you do not know the St. Lawrence.

  13. Member dwtaylor's Avatar
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    #13
    I don't have an 80lb ultrex, but I do have an 80lb motorguide with a 3 blade aluminum prop and I can tell you that I wish I had 112lbs of thrust when the river is high and running.

    I don't have room for a 3rd battery and I cannot afford a single 36v battery either. If you have room, get the 112. It seems the 112s are easier to find too for some reason.

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    #14
    I have ran a 24V- 74lb minn kota on my 19.6 champion since i had it, never needed more. Have a Ghost now and still run it on 24V.

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    #15
    I have a 80lb. Fortrex on my 16.5 ft. Lund and it works great, get the 112lb. for your boat

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    #16
    If you get a good deal on the Ultrex then go for it. If you are worried about longevity on the St. Lowrance then just get 2 - 24v Lithium batteries. My friend has a 20 ft. Boat with a 80 Ultrex and it is just fine, he got it for $1000 which makes it even better.

  17. Member fishnfireman's Avatar
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    #17
    Quote Originally Posted by STRETCH1 View Post
    If you get a good deal on the Ultrex then go for it. If you are worried about longevity on the St. Lowrance then just get 2 - 24v Lithium batteries. My friend has a 20 ft. Boat with a 80 Ultrex and it is just fine, he got it for $1000 which makes it even better.
    So much for getting a good deal on the Ultrex.

  18. BBC SPONSOR/ Shallow Water Anchors Moderator
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    #18
    Quote Originally Posted by STRETCH1 View Post
    If you get a good deal on the Ultrex then go for it. If you are worried about longevity on the St. Lowrance then just get 2 - 24v Lithium batteries. My friend has a 20 ft. Boat with a 80 Ultrex and it is just fine, he got it for $1000 which makes it even better.
    (2) 24 volt lithiums wouldnt be the answer . the st lawrence with the current is a different beast if you fish it often. as the Op said you can be at times trying to spotlock in 5 mph plus current no 24 volt lithum or not will stand the test. nor would the 80 be enough to hold he needs a 36 volt troling motor period if looking to go long hours in heavy current

  19. Member
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    #19
    Quote Originally Posted by KandKKustomz View Post
    (2) 24 volt lithiums wouldnt be the answer . the st lawrence with the current is a different beast if you fish it often. as the Op said you can be at times trying to spotlock in 5 mph plus current no 24 volt lithum or not will stand the test. nor would the 80 be enough to hold he needs a 36 volt troling motor period if looking to go long hours in heavy current
    I used to fish there a lot. I had an old MG Brute trolling motor (I think 54 lbs.) on my Ranger 363V. It was never a problem!