Yeah, I gave it up because I live in an apartment now so gas is a big no no. Also, there is a lot of hassle involved with small gas engines Unless you invest in a really good carb.bbq870 wrote:I live in Shenzhen and can contact him
his board looks like it has some serious power.
@ropower86 I saw your post about using a gasoline engine
Propane/LP gas? Both the above problems solved. And less polluting emissions.ropower86 wrote:Yeah, I gave it up because I live in an apartment now so gas is a big no no. Also, there is a lot of hassle involved with small gas engines Unless you invest in a really good carb.
Running on propane will not provide the engine ultimate power. Just like putting a regular gas in a BMW which it is made for premium gas. There will be HP loss significantly.Chalo wrote:Propane/LP gas? Both the above problems solved. And less polluting emissions.ropower86 wrote:Yeah, I gave it up because I live in an apartment now so gas is a big no no. Also, there is a lot of hassle involved with small gas engines Unless you invest in a really good carb.
Hey, I just realized something, Your Lehner motor 7040/6 has more demand than other brushless motors. Lehner motor 7040/6 was designed to run with a higher quality ESC like the 400a MGM (industrial version). MGM has better quality mosfets and few capacitor with 1000uf rating while Flier capacitor has 200uf rating a significant difference. So conclusion you did not a have the matching ESC for the Lehner motor 7040/6. That motor is designed way different than the rest, yet to only run on MGM ESC.Bazaki wrote:Hey Guys,
No secrets here anymore.
Months I have thought to set up my own company with an electric jet surf, so I could not really share my details.
But I'm doing other things lately and the jetsurf is just standing here. So I want to share all details now.
I found out the exact details of the Lampuga jetsurf.
Lehner motor 7040/6 about 1000 euro
MHZ jetdrive 64mm about 650 euro
Mgm compro ESC ( 25063 ) I think it was their industrial ESC not the hobby esc. about 1000 euro
I bought the same motor and jet drive, very expensive. and bought the cheap flier waterproof 420a esc.
First I bought the swordfish 300a + but gave only 50% throttle, never worked well.
Here is the old video:
Is the casing black or white? The black casing is the newer improved version with better MOSFETs and CPU. Something to look out for. Flier is stepping their game up and it seems like they may figure it out after all. By the way, I changed my motor to a bigger outrunner that produces 5,3kw. Just need to find a way to make a cooling block and install it. Where can I find that magnetic safety switch?Bazaki wrote:Hmmm that is interessting. I now have the 500A flier controller. Of is very very big and Heavy. I was hoping that this 500a controller can do it better.
Check this out:ropower86 wrote:By the way, what is the motor wire gauge?Bazaki wrote:Hmmm that is interessting. I now have the 500A flier controller. Of is very very big and Heavy. I was hoping that this 500a controller can do it better.
That is funny that is what I was planning to do over this past weekend. I was looking at this motor for 4 months now and a little hesitant on buying it. Yes the MHZ propulsion jet units have lower pitch which demands more RPM and power. That's stupid! Because it will create more heat than can cause MOSFETS in the ESC to burn up, over heated brushless motor if water cooling not set correctly and needing more expensive battery, everything will add up to around $3000 to build or more problems.attila0216 wrote:Good Morning to everyone,
I'm following this topic quiet long time and considering to make my own e-jetsurf. The place i live has a huge lake but very shallow and that's why would be ideal a jet system for the board. Gas is prohibited(environmental reasons) so electric the only option. As i was reading the posts i have realized the biggest issue is to find the right size brushless motor. At MHZ watercraft website they have this 64mm jet, but require 12KW of power in order to thrust 400N which approx. 40kmh on water with board. They also have a Scorpion motor with 23KW output, but the battery to operate at a reasonable 20-30 minutes runtime is cost a fortune. So i was thinking why we couldn't just use a smaller brushless with half of the power required but double rpm and just gear it down to half with metal helical gears. For example the Skyrc Proteus X524 is a 5300W brushless with 30K rpm and if geared down to 2:1 will be 15K but double the tourqe so should be enough to power the board and than not needed a huge battery pack and an expensive ESC.
So would love to hear you guys what are your opinions about it.
Jetfreak wrote:Hey guys, maybe you can help me. Iam building my own Jetsurf stuff but the main question I have is how to control the controller... the RCs arent waterproof and a cable solution isnt available on the market or? I was thinking of the Controller from an electric scooter, but how to connect it with an rc controller? Thanks for any answers.. have a nice day
Yeah, i know the function of a statorchris_kline wrote:thanks. well im hoping it will work out pretty well!
the motor will sit further up the tube into the board, but if by "stator" you mean the fin like things in the nozzle, they are to stop the water/jet from just spinning/vortexing the water jet. it should increase thrust, and efficiency. they will be welded to a laser cut "bearing cradle" just behind the prop, this should cut down any vibration of the prop, and mean that i can get my prop super close to the tube walls.
well, on the carbon side, i own a small carbon factory that i setup about 5 years ago producing low volumes of high precision carbon parts, so it shouldnt cause too many unsolvable problems