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  1. CobraJet

    What is this Boat?

    Since I started this thread I've found out that it is an Electracraft Sport Boat that was made in limited quantities quite awile ago. It's been perfect for our lake and keeps the full speed just under the max lake speed of 5 mph. I've since rebuilt the motor with new bearings and cleaned...
  2. CobraJet

    new cyclone 3000 w mid-drive kit?

    Great to hear about your experiance with this motor! Is there a way to change out the plastic gears in an existing 3kW motor to the metal gears? If so, can someone share a link?
  3. CobraJet

    new cyclone 3000 w mid-drive kit?

    Wow, sad really. Sign of the times I guess. Still it sucks though .... Hope it all works out the way you wanted. Best of luck on this my friend!
  4. CobraJet

    new cyclone 3000 w mid-drive kit?

    145.5mm = 5.728329"
  5. CobraJet

    new cyclone 3000 w mid-drive kit?

    Those hooked teeth are evidence of a stretched chain. It may look in perfect shape but definatley stretched. I went through this constantly on motorcycle builds years ago. It's the "Tim Allen Syndrome" kicking in! LOL https://www.youtube.com/watch?v=fEAoQckYfmk
  6. CobraJet

    new cyclone 3000 w mid-drive kit?

    :bigthumb: That was freeking awesome Matt! What size battery pack are you using for the 4kW blasts?
  7. CobraJet

    new cyclone 3000 w mid-drive kit?

    So what does the Freewheel Spider do? It looks like a spacer.
  8. CobraJet

    Queen Battery QB26800 6800mAh 20A - the big guy!

    So what is the latest on these cells? How well are they holding up? Who is selling them?
  9. CobraJet

    18650 cells from Amazon

    https://www.amazon.com/4000mAh-Rechargeable-Battery-Flashlight-Headlamp/dp/B08BNTQ3KJ/ref=sr_1_2?crid=3J1B47GW0SL9E&dchild=1&keywords=18650+batteries&qid=1595637384&s=electronics&sprefix=18650+batteries%2Celectronics%2C248&sr=1-2 I found this link looking at Amazon. Has anyone used these cells...
  10. CobraJet

    Simple Outboard Conversion

    What HP was the outboard originally and what size prop is it swinging? Did you happen to get any RPM readings? BTW, what do you think about those batteries? Where they up to your expectations? The reason I'm asking all these questions is I just got an electric boat. It is currently running...
  11. CobraJet

    Simple Outboard Conversion

    Oh that is just too cool, I'm glad you were successful with it! :bigthumb: What were your final numbers on the power it required? ( running volts, amps, watts?)
  12. CobraJet

    What is this Boat?

    Well it does have a 24V 25amp battery charger installed so I'm thinking yes. Couldn't find any info on this model specifically. I'm thinking that it must have been from last century judging by the hull style. If you have any info on it or a better link that you can share I'd really appreciate...
  13. CobraJet

    Motor for 18ft Electric boat

    Can you recommend a brushed controller. Needs to have reverse.
  14. CobraJet

    What is this Boat?

    I've been doing lots of searching the past few days. Google has been running hot from all the use I've given it. Anyway, I found out what my boat is. It's made by Electracraft and it's thier Sport Boat that they no longer make. I haven't been able to find a year yet but I'll keep looking. BTW...
  15. CobraJet

    What is this Boat?

    Well over the past 2 days I charged each battery separately and they all came up to 6.4V and held overnight. I did take it on a short test run this afternoon. Motor and/or the bearing makes some noise. Looking things over I can tell that they have been under water before and probably need new...
  16. CobraJet

    What is this Boat?

    Thanks flat tire. I have been stuck out in the water before years ago so I make every effort to keep things under my control that way. This boat resides with us on a lake that is only 1/2 long, I can padle home if I need to. In regards to the $50 motor controller, have you got a link for that?
  17. CobraJet

    What is this Boat?

    The batteries are all new golf cart batteries (4/20). They are wired in series as far as I can tell but there are a hell of a lot of wiring connections going to the battery pack, Some of it looks like a factory wiring harness but there are a few extra wires hacked into that. I will definately...
  18. CobraJet

    What is this Boat?

    I just bought a battery powered boat. It has no markings or numbers on it anywhere. I've looked all over the hull, under seats, in the motor/battery compartment and can not find the make or model. As a matter of fact, no numbers on it anywhere! It's powered by 4 - 6V batteries and a brushed...
  19. CobraJet

    Horsepower needed?

    Wow I like those numbers you're getting! They do seem more in line with what I was kind of expecting. What calculator are you using? The calc I used was the one mentioned and doesn't look anything like what you posted. This is what I get using the posted calc.
  20. CobraJet

    Horsepower needed?

    Oh that would be really cool, thanks so much! Width of the hull at the transom is 5',2", length of the hull is 14',2" It has a shallow V and I roughly estimate the fiberglass hull weight at 1000 lbs. Here are a couple of pics I took today.
  21. CobraJet

    Horsepower needed?

    I did do a few scenarios using the calculator above. The ones I tried were all way off in speed estimates! I base this on a couple of boats that I previously owned and a gasoline engine that I had. For instance: small rowboat 5 hp engine entire boat weight including myself = 600lbs. calculated...
  22. CobraJet

    Horsepower needed?

    I fully realize that the statement you made about hull shape and weight effect the performance just as you say. Thanks for your thoughts. However, when I plug my parameters of my old boats into the boat speed calculator that you mention, it gives me a WAY Too exagerated optimistic speed. I even...
  23. CobraJet

    Simple Outboard Conversion

    Oh that is cool, I didn't know there were ready made electric outboard motors already available! I've looked at the more powerful electric trolling motors but those things are damned expensive! If I thought that 5 HP would do it I already have a really nice 4000 watt motor that I'd adapt, but I...
  24. CobraJet

    Horsepower needed?

    This past year I bought a project house on a private lake. This place was really tore up but I'm pretty well finished with house chores and looking to play around a bit now. This lake only allows electric motors. I'd love to put together an electric outboard for next summer! Lately I've had my...
  25. CobraJet

    Simple Outboard Conversion

    How well did this work out for you? Reason I'm asking is I just moved onto a private lake that only allows electric motors. I'd love to put together and electric outboard for next summer! Lately I've had my eye on a 14' boat that looks like the picture but currently has no engine. I'm thinking...
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