I'm planning of building a boat like this. I was wondering if a 3670 1700kv motor on 6s (I already have 6s 1.3ah 100c batteries) would be adequate for this drive and hull combo?
Yes. With the bigger motor size you will have enough torque to spin it and even more power than me thanks to 6s. A bit lower kv might draw much less amps though.
In normal conditions, pretty much never, the lifespan is long. The only thing I need to change lets say every year are the bearings. The damage done to this motor in the video was caused by bad soldering and was not difficult to repair. Also once I destroyed a rotor of one motor because of too high RPM. It should not happen in regular conditions though.
With the M-Jet 30, I used 3660 1700kv on 4s. If you use a 3180kv one, use less cells but I think on 3s it will work well, also depending on your esc. Just be careful and check the motor temperature at first
@@mjetdevelopment Sorry to bother again but do you know where I could find a 3660 1700kv can't get a hold of that aquastar 1700kv out of stock everywhere.
@@favian3380 This seems to be a good estore if you are in america, and the 3660 1800kv will work well with the M-Jet 30: www.rcjuice.com/hobbystar-3660-4-pole-brushless-sensorless-boat-motor-waterproof.html I am in Europe in a country where they dont ship but was able to purchase it through ebay. I tested this motor with the M-Jet Sprint:)
Hi Stepan! Can you share the link to get the accessories (shaft, nuts, gasket, etc.)? Is that this M-Jet 30 is powerful than the 50mm or 80mm 3D print you also have. Thank you!
Hi, the M-Jet 60 is far more powerful than the M-Jet 30 and has completely different purpose. I recommend you to buy the accessories on ebay, the sellers depend on your location.
@@mjetdevelopment I would love to get the M-Jet 60, but it looks like it will take a while to get it since it's not yet ready, & I really want to make one now to enjoy before this summe is over.
@@hienkn360 Definitely not. Thrust of the M-Jet 30 with my setup is 3.6 kg, it will probably never exceed 4.5 kg with any setup. 9kg will definitely not be enough for a surfboard. The M-Jet 60 might take a while indeed, it is a co-operation with Julian and now the time plan does not depend on me that much anymore.
@@vasekkeller-kelly5893 Můžu doporučit jakékoli vodotěsné Sawox. Konkrétní typ jinak nemám, měl jsem dlouho sloužící hobbyking servo, ale to už se neprodává. Není potřeba nijak velká síla ani rychlost, vodotěsnost je hlavní, lze vybrat i nějaké levnější jiné značky. Možná najdete štěstí tady profimodel.cz emotors.cz
@@mjetdevelopment Děkuji moc za odpověď,jen ještě jednu otázku,na jak velkou loď tento motor mohu použít.Chci si dělat z lehké překližky model(jetstream boat)zhruba 60cm motor 3660 1850kv 90A.
@@vasekkeller-kelly5893 Dobrá volba, 60cm trup je jen trošku víc než přesně akorát. Motor bude fungovat správně na 3-4S, na 4S jen trošku opatrně s teplotou.
So cool under 3 minutes!
I'm planning of building a boat like this. I was wondering if a 3670 1700kv motor on 6s (I already have 6s 1.3ah 100c batteries) would be adequate for this drive and hull combo?
Yes. With the bigger motor size you will have enough torque to spin it and even more power than me thanks to 6s. A bit lower kv might draw much less amps though.
... how often do you have to change the motor because it burns out?
In normal conditions, pretty much never, the lifespan is long. The only thing I need to change lets say every year are the bearings. The damage done to this motor in the video was caused by bad soldering and was not difficult to repair. Also once I destroyed a rotor of one motor because of too high RPM. It should not happen in regular conditions though.
Quick question is the 3660 3180kv the most efficient motor and fast you found for the M-jet30?
With the M-Jet 30, I used 3660 1700kv on 4s. If you use a 3180kv one, use less cells but I think on 3s it will work well, also depending on your esc. Just be careful and check the motor temperature at first
@@mjetdevelopment Thank you for the information what is a safe temperature?
@@favian3380 I dont know accurately, just put your hand on it and if you can keep for a moment it its ok:)
@@mjetdevelopment Sorry to bother again but do you know where I could find a 3660 1700kv can't get a hold of that aquastar 1700kv out of stock everywhere.
@@favian3380 This seems to be a good estore if you are in america, and the 3660 1800kv will work well with the M-Jet 30: www.rcjuice.com/hobbystar-3660-4-pole-brushless-sensorless-boat-motor-waterproof.html
I am in Europe in a country where they dont ship but was able to purchase it through ebay. I tested this motor with the M-Jet Sprint:)
Hi Stepan! Can you share the link to get the accessories (shaft, nuts, gasket, etc.)?
Is that this M-Jet 30 is powerful than the 50mm or 80mm 3D print you also have. Thank you!
Hi, the M-Jet 60 is far more powerful than the M-Jet 30 and has completely different purpose. I recommend you to buy the accessories on ebay, the sellers depend on your location.
@@mjetdevelopment I would love to get the M-Jet 60, but it looks like it will take a while to get it since it's not yet ready, & I really want to make one now to enjoy before this summe is over.
@@mjetdevelopment Would two of this M-Jet 30 be able to have enough power for a surfboard to go fast like 30-40 kph?
@@hienkn360 Definitely not. Thrust of the M-Jet 30 with my setup is 3.6 kg, it will probably never exceed 4.5 kg with any setup. 9kg will definitely not be enough for a surfboard. The M-Jet 60 might take a while indeed, it is a co-operation with Julian and now the time plan does not depend on me that much anymore.
@@mjetdevelopment Great info!
What would be the least average thrust needed for a surfboard?
Bude mi stačit servo MG995, diky za odpověď
Velikost a síla dobrá, ale není vodotěsné, což může znamenat docela krátkou životnost
@@mjetdevelopment můžete nějaký doporučit.
@@vasekkeller-kelly5893 Můžu doporučit jakékoli vodotěsné Sawox.
Konkrétní typ jinak nemám, měl jsem dlouho sloužící hobbyking servo, ale to už se neprodává. Není potřeba nijak velká síla ani rychlost, vodotěsnost je hlavní, lze vybrat i nějaké levnější jiné značky. Možná najdete štěstí tady
profimodel.cz
emotors.cz
@@mjetdevelopment Děkuji moc za odpověď,jen ještě jednu otázku,na jak velkou loď tento motor mohu použít.Chci si dělat z lehké překližky model(jetstream boat)zhruba 60cm motor 3660 1850kv 90A.
@@vasekkeller-kelly5893 Dobrá volba, 60cm trup je jen trošku víc než přesně akorát. Motor bude fungovat správně na 3-4S, na 4S jen trošku opatrně s teplotou.