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I now have my dual cooling set up and running 5s batteries. With the stock balanced and sharpened 40mm props the boat is running right at 50mph. The motors and esc's aren't even breaking a sweat. Temps are at about 70-75 degrees, water temp is really cold right now though. Now I need to step up the props but don't know what is too much. OSE's website recommends the 45mm CNC props but I'd hate to spend $40 on props and then overheat something. How do I determine what prop to buy? Is it literally trial and error?
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hi ohlp
Yes to find the perfect prop is trying and go from there if you run a twin setup try ABC 1716-17s depending on motors -
A $40 set of CNC props is the baby step to find what works best before you spend more money on really good props. What motors are you running in that boat? I believe they originally came with 36mm 2075kV SSS motors, which is what I run in my Cheetah. I run that boat on 4S and with ABC 1715's it runs mid 50's.Vac-U-Tug Jr (13mph)Comment
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You don't have a lot of headroom with those 120A ESC's, but then again, you are only running 5S batteries and not 6S. TFL has since begun selling that boat with 180A ESC's. So, I would move up slowly, starting with a set of 445's if you have the boat dialed in and not plowing through the water. The motors will tell you if you're running too much prop with high temperatures. If you can't hold your finders on the back of the motor and motor shaft for a few seconds after a run, it's too hot.Vac-U-Tug Jr (13mph)Comment
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We have a Zonda with twin 2075kv SSS motors with 180A ESC'S and run a cheap set of CNC 3 blade 48's on 6S. We keep our run times around 3 1/2 minutes.
Temps are around 110-115 on the batteries after the run. 65-72 mphComment
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Thanks for the suggestions. I ordered a set of 44mm CNC's that Steve suggested. We'll see how she does with those.Comment
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