crapshooter

anyone used or know what the Leopard Brushless Motors are like ? got my eyes on a 3674 / 2200kv . just not sure on how good the name is.

blvdbuzzard

I have used one in a RC short course truck.. Has held up well with my abuse.

Buzz.

Patrick125

They are good motors especially for the price.

crapshooter

thinking on buying the 3674 - 2200 for my zippkits jae fe rigger. neu is out of my price range.

Patrick125

A good prop would be an octura x642 or an m445, you can expect 50 plus on 4s with these props and that motor, be sure that you have a good esc, example seaking 180 and good solder joints.

crapshooter

i have now decided to buy the Turnigy xk 3674 - 2200 kv [ leopard copy ] going by a reviwe between the leopard and the turnigy on r/c groups, cheaper price, and run the 180 esc plus an abc h7 prop. if i want even more speed i can easily swap motors over to the Turnigy 4074 - 2200 kv. then maybe a neu , what do you think ?

Patrick125

The 4074 and the 3674 should be very close in performance. If you get the 3674 the 4074 wouldn't offer anything significant in performance.

crapshooter

do you like the Aquastar 3974-2200 kv motor [ hobby king ] ?? which would be the better the turnigy xk 3674 - 2200 or this aquastar ? also not sure on a 120 or 180 amp esc ? running a 4s.

Patrick125

The 180 esc is the better choice, I had the leopard 3674 2200 and I have seen the aquastar 3974 2200 motor, the aquastar and a 642 or m445 would be an easy 45 to low 50's on 4s with good connectors and good solder connection, the xk 3674 should be similar to the leopard 3674 is another very good motor. But if the 3974 can fit in you boat then maybe a leopard 4092 or a tp 4060 might fit. I can tell the leopard 4092 on over power the 3674 and the aquastar 3974 on 4s. I run the 1730kv 4092 on 4s with an m545 and that get my revolt to mid to high 50's and I am talking 4s. I ran the 4092 2080kv in my revolt on 4s with the m545 and the boat was way over powered. https://www.youtube.com/watch?v=AiVMnxZ7r-Y this link has the revolt with the 2080 4092.

crapshooter

can see the power the mono has maybe was abit rear cog ? HobbyKing have a good Turnigy 180 esc going by the review but it could be too large to fit in the jae tub [ measures 72 x 48 x 37mm ] so do you think the Aquastar 3974 - 2200 would have more power than the XK 3674 - 2200 ?

Patrick125

The 3974 and the xk 3674 should be so close had for me to pick one over the other, I would pick the one that gives more space to work with in my boat. The xk 3674 would be my pick.

crapshooter

thanks Patrik i will try out the Turnigy xk 3674. with the 180 esc.

kennethfunk

I'm thinking of getting the Leopard 3674 2200kv in my Revolt,I'm using 6s and a 120a Seaking,just thinking the stock motor may be working too hard on 6s?

crapshooter

have a look at the Turnigy XK 3674 / 2200KV marine motor from hobby king, its alot cheaper than the Leopard 3674 . i was going to buy the leopard but several guys suggested the Turnigy xk. you should use a 180 amp esc.

kennethfunk

Thanks,I will check the Turnigy XK 3674/2200kv out,and probably get the Seaking 180a later,will see how the 120a does that I have now: )

Got RPM

Good luck getting the SK-180 to fit in a JAE rigger tub! My JAE runs upper 70s with a Castle 1415/1Y and an H-7 prop.




.

crapshooter

hobby king 180 esc measurements; 72 x 48 x 37 mm. jae tub measurements ; 150 plus x 60 x 55 mm. why won.t this esc fit the tub ?

kennethfunk

Is the leopard 4092-1730kv a good one to get and run 6s?

Patrick125

That motor might breakup things on 6s. I have used that motor the 1730kv in my revolt on 4s with an octura m545 the boat was just around double the speed that the revolt did stock on 4s with the grimracer 4255 prop. My connectors used to get hot though so that why I start soldering the speed control wires to the motor wires. Well this turn out to be a big mistake, I cannot run 4s anymore with the speed control wires soldered to the motor wires. Too much power on 4s, the motor has so much torque that I cannot get the collet to hold the shaft for more that a pass if so much, I had a shaft that had the end grind down, until I went to a 5mm to 1/8 collect a that couldn't hold the shaft for long, so I lost a shaft and a prop yesterday because the motor is too powerful.


And I am talking about 4s with a prop that would be small for the 4092. You might have better luck with a less powerful motor.

https://www.youtube.com/watch?v=g_lF3VLcdd8 In this video the revolt is completely stock on 4s.

https://www.youtube.com/watch?v=u9TcjuUXUz4 In this video the watch from 23 seconds into the video to 29 seconds. From around the 23 second mark the impulse was full throttle coming from behind, at the 25 second mark the pro boat mystic turn off, at the 26 second mark the impulse was just about to pass my revolt which was just turning off. So the mystic turn off a second ahead of the revolt, by 28 seconds into the video the revolt had close the gap that the mystic had.

The mystic was getting a consistant 51 to 52mph on gps, the impulse to my knowledge was doing 45 to 48mph on gps. I don't know how fast my revolt was doing but it was a lot faster than the other 2 boats. In the video I was using the 1730kv 4092 on 4s with a octura m545.

kennethfunk

Yes that's really fast!..pushing the speed limits,and that's on 4s....so if I want to run 6s I guess the Leopard 3674 2200kv or Turnigy xk3674...I've been looking at different motors and wanting one best to run 6s and be capable of 60mph,but mostly would be running in the 40's because most of the time the water is a little choppy,I'm running the stock 42-55 prop,going to try the 45-68 prop tomorrow. The other day though my motor was smoking a little,and I only did a few couple second full speed during the run...esc though wasn't hot at all..?..I ordered some Trinity brushless motor oil,..manual says to spray a "water displacer" in water cooling jacket and motor often,need to get some: )

crapshooter

Thats not a good sign the motor smoking, do you think its a motor overload or maybe bad bearings causing heavy friction equaling heat. how about trying a 3674 - 1650 kv for the 6 s power.

kennethfunk

Will be checking motor,it seems fine,thought maybe it was the 6s that caused it...may try the lesser kv

kennethfunk

I think it was smoking from the 3 in 1 oil I put on motor bearings,I put too much and it was burning excess oil....I'll do some more test runs and check: )

Patrick125

When the oil gets heated it will smoke. I don't think the leopard 3674 2200 would be good for 6s, that's a high kv for 6s, and that motor is really powerful. I had one and it was a monster on 4s with the m545. I think the leopard 4074 1650kv would be a better suited motor for the revolt and 6s running. But I feel the revolt will be a handful to deal with on 6s with that motor and a 45mm octura prop. But the 1650kv will be well suit for 6s.

kennethfunk

Thanks Patrick 125,I've been wondering about that,I think I will get the 4074 1650kv Moto,I think the stock motor doesn't like 6s,and want something bigger to handle 6s,will also look at the turnigy xk to see there motor in that setting-4074 1650kv