West Marine PRU-3 Inflatable Boat with Tohatsu 3.5 HP Speed Fix

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  • เผยแพร่เมื่อ 23 ส.ค. 2024
  • I had a bad surging problem with my new inflatable where it would ventilate air when trying to get onto plane. I tried raising the PSI of the tubes from 2.0 to 3.5, stiffening the boat floor, and looked for other solutions. In the end, I found a fix that raised the top speed from 6.3 to 9.9 mph - a 44% gain!
    Affiliate links:
    Great pump: amzn.to/38FkMhP
    Doel Fin Hydrofoil: amzn.to/2MjeqNL
    Propeller: amzn.to/2WRuXKH
    Great VHF with GPS DSC distress signal: amzn.to/37UPhku
    Auto-inflating Vest: amzn.to/3mXP5Fo

ความคิดเห็น • 52

  • @Freddieready
    @Freddieready 3 ปีที่แล้ว +4

    Nice video and a small recomendation just buy a small anchor and leave the dinghy in shallow water not touching the floor this will extend the life of your dinghy and not have any punture. Keep the videos coming 👍

  • @svdellajean253
    @svdellajean253 11 หลายเดือนก่อน +1

    I’m considering buying a Tohatsu 3.5 for my inflatable. Thanks for the video review and posting the link to the prop.

  • @stevegreen54
    @stevegreen54 3 ปีที่แล้ว +1

    Your position in the boat will make a big difference. A telescopic tiller extension allows you to move up to 3ft forward. Great video, I’m off to buy some dolphin fins . Thanks.

  • @TreeTopFlier
    @TreeTopFlier 3 ปีที่แล้ว +2

    I have a doel fin on my 18ft aluminium walk through with an 85hp outboard, came with the used boat. I decided to take it off to see if it made a difference. It does! A little higher top speed because I can trim more of the boat out of the water without porpoising. It's also more stable in rough water. As an added bonus it keeps swimmers off the prop and has been used as a step. Def try it on the Boston. PS still love the blackout ;-)

  • @craftbrewer5401
    @craftbrewer5401 3 ปีที่แล้ว +3

    Thanks. Just had a similar boat and same motor out for the first time today, and I have the same problem.

    • @craftbrewer5401
      @craftbrewer5401 3 ปีที่แล้ว

      Changing the propeller didn’t do I for me. But I can’t get my self to drill holes to install the finn.

  • @WaterTrails
    @WaterTrails 3 ปีที่แล้ว +3

    I think your video just might have changed my purchase choice for a dinghy to my sailboat. Thanks, there are few vids that take a minimalist approach to planing (getting on a plane with the most economical setup)!

  • @jamesparnell9893
    @jamesparnell9893 ปีที่แล้ว +2

    You should swap your carb with the 6hp carb and do another test. Great video.

  • @BalkTutkusu
    @BalkTutkusu 3 ปีที่แล้ว +5

    really nice video, i have the same brand, same hp but 2 stroke one and i will try changing the prop, thanks👍

  • @marknewman6730
    @marknewman6730 8 หลายเดือนก่อน +1

    Excellent video mate. Really useful.

  • @t.c.2776
    @t.c.2776 ปีที่แล้ว +1

    I know it's 2 years after you posted... but if you had cute a floor piece for the bow section of the dingy, that would have helped it plane better also...

  • @ABHALONEAVENTURA
    @ABHALONEAVENTURA 2 ปีที่แล้ว +1

    Very good boat and excellent engine I'm in love with boats Strong hug from Brazil

  • @Cryptony1975
    @Cryptony1975 2 ปีที่แล้ว +2

    I have a mercury 6hp 4 stroke. Plenty of power

  • @joedanvers1010
    @joedanvers1010 3 ปีที่แล้ว +1

    Great, informative video. Thank you!

  • @FrankLadd
    @FrankLadd 2 ปีที่แล้ว

    Great visdeo showing all the steps!

  • @Francois_Dupont
    @Francois_Dupont 3 ปีที่แล้ว +3

    so the best thing was to change the propeller from plastic composite to aluminium?
    are they still the same size as the original one? 7.4inch x 5.7pitch ?

  • @rudyllamas3320
    @rudyllamas3320 3 ปีที่แล้ว +5

    What's the part number for the prop?

  • @NinoSpinner
    @NinoSpinner 3 ปีที่แล้ว +1

    Very good !! with the aluminum propeller did you find that it goes faster?

  • @davidbuie3316
    @davidbuie3316 3 ปีที่แล้ว +1

    Great video. I have this inflatable. Thanks for the very useful info.

  • @DennysCountryLife
    @DennysCountryLife ปีที่แล้ว

    This dinghy isn't designed to plane, but you did a good job of making it do so! It's a full displacement boat. In order to plane nicely, you need a RIB "Rigid Inflatable Boat". That's according to the manufacturer anyway. They are fantastic shit-to-shore boats, for tooling around the marina, island hopping etc. Thanks for the video!

  • @drfrank777
    @drfrank777 9 หลายเดือนก่อน

    Why do you think the new prop made such a big difference? Did it have a greater pitch? Can you compare the old and new with some numbers? Thanks!

  • @mrjams6140
    @mrjams6140 2 ปีที่แล้ว +1

    Mantap bro!! 😎

  • @3flgator
    @3flgator ปีที่แล้ว

    Hey there. Have you had any issues with the PVC of the boat? Discoloration, punctures, leaks etc?

  • @ZampostOk
    @ZampostOk 3 ปีที่แล้ว

    Hey that’s a cool watch!!! What watch is that???

  • @jameslong2618
    @jameslong2618 3 ปีที่แล้ว +2

    Who else is thinking about buying an inflatable boat with their stimulus check.

    • @glenstriper
      @glenstriper 3 ปีที่แล้ว

      I did. Achilles lsi 104 lightly used!!

  • @svticklemefinn1176
    @svticklemefinn1176 2 ปีที่แล้ว +2

    That dingy is not meant to plane. Thinking about one now it's on sale.

    • @earnestborg9909
      @earnestborg9909 ปีที่แล้ว

      I've got the 2.5 meter one, it's probably the best bang for the buck you can get....very pleased

  • @Mr.Fabrication007
    @Mr.Fabrication007 2 ปีที่แล้ว

    Its called hydrodynamics for things that move thru water, the doel-fins aren't supposed to act like an airplane wing or provide lift. Thats something completely different called a hydrofoil, which is designed to create lift and support the vessel weight. Not the same principals at all really, fyi... :(

  • @unnamed9254
    @unnamed9254 3 ปีที่แล้ว +1

    Hey i have this but i have a 15hp mecury is that to much for it?

  • @tomzhang8675
    @tomzhang8675 3 ปีที่แล้ว +1

    Is that a long shaft one?

  • @tomzhang8675
    @tomzhang8675 3 ปีที่แล้ว +1

    Is that a 20" shaft one?

  • @anduwasup
    @anduwasup 2 ปีที่แล้ว

    Hi! Can you tell me the height of transom and lenght of shaft? I wan’t to get the same 3.5 hp short and I’m affraid not to get in same situation. My transom is 395mm.

  • @Cutlass_Rudd
    @Cutlass_Rudd 3 ปีที่แล้ว +2

    Get an older 9.9 2 stroke, they only weight a little more than that 3.5

    • @grappighaha6830
      @grappighaha6830 2 ปีที่แล้ว +1

      The fuel usage is much more than a 3,5 4 stroke

  • @bushpig8109
    @bushpig8109 2 ปีที่แล้ว

    Does it also start in forward position or is than a gear save engaged?

  • @arkadiuszk.3898
    @arkadiuszk.3898 6 หลายเดือนก่อน

    Is it 15" or 20"?

  • @ttxxdd
    @ttxxdd 3 ปีที่แล้ว +1

    Do these dinghys require short shaft or long shaft motor?

  • @bobbylarotonda5674
    @bobbylarotonda5674 3 ปีที่แล้ว

    Where did you get the watch ??

  • @Dmoormans5
    @Dmoormans5 2 ปีที่แล้ว

    What watch is that??

  • @robmanuli5630
    @robmanuli5630 2 ปีที่แล้ว

    What’s the prop size

  • @JERZEECOWBOY
    @JERZEECOWBOY ปีที่แล้ว

    I wanna know what kind of watch that is?

    • @rsilvers
      @rsilvers  ปีที่แล้ว

      Garmin Fenix 6X.

  • @ryanhenry21
    @ryanhenry21 3 ปีที่แล้ว

    What is the length of the boat?

  • @davidkirksey8521
    @davidkirksey8521 3 หลายเดือนก่อน

    That boat is not designed to plane IMHO

  • @sendyamulet
    @sendyamulet ปีที่แล้ว +4

    why do akl these vudeos spend fufteen minutes staring at the tail of the boat and telling stories about what you did after breakfast, leving us scrubbing forward to the bit where we actually see the boat and notor working. ??? people do not want to sit listening to woffle of ten minutes before seeing the content

  • @samueljanes
    @samueljanes 3 ปีที่แล้ว

    You may like this solution for that kind of motor:
    th-cam.com/video/GmR0hL-ypzU/w-d-xo.html
    Regards.