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Old Nov 01, 2012, 10:44 AM
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Joined Nov 2012
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Leopard LBP5692 - what do you need?

Hi,

Thinking of getting a small winter project that needs a lot of power and tourqe.

Im thinking of using a Leopard LBP5692 http://www.helipal.com/leopard-lbp56...ess-motor.html this combined with a Jet from MHZ-USA http://shop.mhz-powerboats.com/categ...22/Jet-62.html.

So I have two questions, do you think the Lepoard will do the job or do I have to go gasoline? Second, for a motor like this, what ESC should you use and what kind of Lipo setup, feels like it will be monsterous?
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Old Nov 01, 2012, 05:58 PM
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Canada, ON, Markham
Joined Aug 2008
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The jet drive says it was 6000w and up, and that motor is only good to 5500w. You'd be better off with a more powerful motor.
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Old Nov 02, 2012, 03:57 AM
Boaters are nice people.
Sneek, Netherlands.
Joined May 2004
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Hi kassler,

You'll need at least something like this:
http://www.helipal.com/leopard-lbp56...ess-motor.html
On 6S2P you'll just reach the maximum rpm under load.

Even more motor would be nice though, as powering such a large jet is a real punishment for the motor in question...

Regards, Jan.
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Old Nov 02, 2012, 04:46 AM
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I would have no problem using the "biggest" motor you could find, the thing I really wonder about is the ESC and Lipo setup, is it really possible to get some running time with a motor like this without a batterypack and wiring that weighs a tone?

What Im thinking of building is something like this for the kids.
http://www.jet-surf.com/en/video.php
But with an all electric setup if possible to get the amount of thrust that I need. :P
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Last edited by kassler; Nov 02, 2012 at 04:52 AM.
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Old Nov 02, 2012, 06:44 AM
Boaters are nice people.
Sneek, Netherlands.
Joined May 2004
4,876 Posts
Hi Kassler,

I'm sure you realize that there's a reason the Jetsurf manufacturer went for various petrol motors to power the board...

With a petrol engine, the runtime is an hour, electric powered it will be a tenth of that, at best and the board will be quite heavy, due to the amount of Lipo's required.

You need to know what size jet is used in the Jetsurf and the output of the petrol engines used.
The thrust can be generated electric, no problem, weight and runtime is another issue...

If you're allowed to run petrol engines where you want to run the board, I'd get a petrol driven one.

Regards, Jan.
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Old Nov 02, 2012, 07:50 AM
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Gordonsville,Virginia
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By the time you buy all the parts retail [if you can even find them] you probably been cheaper to just by the commercial product .Going electric will cost . And your run time will be very low .
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Old Nov 02, 2012, 07:57 AM
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Hi Jan,

Couldn't agree more, I have two petrolboats today and petrol is the usally my first choise, havenīt much experience with electric propulsion .. and thats the main reason for trying somthing different like this, looking for the power of a petrol engine while having the opertunity to try to builid something really different.

But in the end you might be right, if you want some speed you need the power of a 80cc-100cc engine, +10-15hp and the weight of the batterys will probably be mor than the rider...

But .. im still curious what type of setup an electric enginge like this needs!
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Old Nov 02, 2012, 08:12 AM
Boaters are nice people.
Sneek, Netherlands.
Joined May 2004
4,876 Posts
Quote:
Originally Posted by kassler View Post
But .. im still curious what type of setup an electric engine like this needs!
Hi Kassler,

To power the MHZ Jet64, there are only a few motors, that can cope with it in direct drive, such as this one:
http://shop.mhz-powerboats.com/E---M...-5035-760.html

If you should use a belt reduction, there are more candidates, just snoop around for Plettenberg, Lehner, Neu etc...
MHZ also has this one, reduced 1:2,5, running on 10S, you end up with 17000rpm and gobbs of torque...:
http://shop.mhz-powerboats.com/E---M...--1-150KV.html

Regards, Jan.
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