4074 2000kv - 4082 2000kv difference

[Slvrbowtie]

Im running on 6s with a CC 200hv esc other then being just a little bigger is there going to be any difference in performance between the 4074 2000kv and the 4082 2000kv or just a little more room for prop change?

[Make-a-Wake]

What are you running that setup in? 45,000 rpms??? Those are really 4s motors unless you are running SAW passes..........

The 4082 can swing a bit more prop...........but also sucks the amps.

[Slvrbowtie]

I,m going to put it in my pursuit right now I have the 1518 1800kv castle motor in it with a 40mm prop on it its borderline over pushing it and thats at 56mph. im just trying to get a little more speed out of it

[Drax21]

The castle motors are more efficient than Leopards. There has been tests to support this. If you really want more speed lower the KV say a 1520 1600kv and go 6s. That should get you into the low 60s when tuned with the correct prop. I run a 1515 2200kv on 4s2p with a M645 and I have seen 53MPH once (GPS'd). I think I can tune it though for a bit more speed.
I don't think you will get much difference between the Leopard motors.

[de-pro]

Loeopard 4074 2000kv motor is rated for up to 2600 watts of power, 120 amps max draw, Y winding and 4082 is rated for up to 3500 watts of power, 140 max amps draw and uses D winding

[Rumdog]

Knock it off. You're gonna smoke your gear. Keep the Castle, run 5s2p. If you cant get near 60 out of that your doing something wrong. 2200kv is NOT a 6s motor. A boat is NOT a car Put a real prop on that boat. The 1518 will swing a x447 no problem.

[Drax21]

Knock it off. You're gonna smoke your gear. Keep the Castle, run 5s2p. If you cant get near 60 out of that your doing something wrong. 2200kv is NOT a 6s motor. A boat is NOT a car Put a real prop on that boat. The 1518 will swing a x447 no problem.

I have to agree with all of this.

[JIM MARCUM]

Ya, I'd go with the 4082 5S2P for 37,000 RPM. Good for fast playing around. I don't know what boat you have but, if you want to race NAMBA Offshore P classes 4S2P is the limit. To race oval or offshore you need to run in the mid 30,000 range. 4S2P with a 2200-2400KV motor will get you there, but thats not a choice with these motors. A 4074 2150KV on 4S will get you 31,820 RPM, and set up right would be the best choice in that series. If you want pure crazy speed run 5S for 39,775 RPM. You will need to keep a very close eye on motor temps and prop up slowly. But, without knowing what hull you are running this only a WAG. JIM

[Diesel6401]

Im running on 6s with a CC 200hv esc other then being just a little bigger is there going to be any difference in performance between the 4074 2000kv and the 4082 2000kv or just a little more room for prop change?

Running 6s on those motors I imagine you'll see smoke before you see 60mph. Your setup needs a WHOLE lot of work bud. Your going about things backwards your running excessive rpms and small props, you need less rpm and more prop. You should/can see 60mph by doing things the correct way and not running a potential bomb. The rpm rules are constantly being challenged and pushed by new comers and the facts remain the same the new guys end up short of cash and with stock pile of burnt equipment before they realize there's a reason those rules are in place.

I made a thread about this exact topic, you should really take a look before your hurt someone or something: http://forums.offshoreelectrics.com/...ession-with-6s

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[Slvrbowtie]

Thank you for all the help i'll just leave the 1518 in and mess with the prop

[Slvrbowtie]

Running 6s on those motors I imagine you'll see smoke before you see 60mph. Your setup needs a WHOLE lot of work bud. Your going about things backwards your running excessive rpms and small props, you need less rpm and more prop. You should/can see 60mph by doing things the correct way and not running a potential bomb. The rpm rules are constantly being challenged and pushed by new comers and the facts remain the same the new guys end up short of cash and with stock pile of burnt equipment before they realize there's a reason those rules are in place.

I made a thread about this exact topic, you should really take a look before your hurt someone or something: http://forums.offshoreelectrics.com/...ession-with-6s

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Thank you diesel I,m just going to leave it alone with the 1518 in it when i went through the data logger i was with in all the safe zones so i'll mess with the prop a little I know the 1717 would be more ideal being only 1580kvs but i'll work with what i have thanks for the chart

[Diesel6401]

Thank you diesel I,m just going to leave it alone with the 1518 in it when i went through the data logger i was with in all the safe zones so i'll mess with the prop a little I know the 1717 would be more ideal being only 1580kvs but i'll work with what i have thanks for the chart

I'm seeing mid 50s (mph) on a Leopard 4074 2200kv and m645 on 4s2p in my Pursuit. Its a very aggressive setup (runtime sucks), but its rather quick. I am playing with different props on it now. I have a 1717 in a 41" mono needless to say that would be a large motor in a pursuit. A 1518 would/should run nicely. There's also the 4092 size leopards. I don't want to change motors out on my Pursuit, but a larger size can (maybe 4082) would be a little better. I have a x447/3 cut down to 42mm I'm going to try next. Smaller dia with more pitch, may allow the Leopard to wind out a little more. You find that prop changes and hardware adjustments will yield more speed then just throwing more voltage at a bad setup.

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[Slvrbowtie]

I'm seeing mid 50s (mph) on a Leopard 4074 2200kv and m645 on 4s2p in my Pursuit. Its a very aggressive setup (runtime sucks), but its rather quick. I am playing with different props on it now. I have a 1717 in a 41" mono needless to say that would be a large motor in a pursuit. A 1518 would/should run nicely. There's also the 4092 size leopards. I don't want to change motors out on my Pursuit, but a larger size can (maybe 4082) would be a little better. I have a x447/3 cut down to 42mm I'm going to try next. Smaller dia with more pitch, may allow the Leopard to wind out a little more. You find that prop changes and hardware adjustments will yield more speed then just throwing more voltage at a bad

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I agree. It make really no sence to me to change my motor and spend the money to start from scratch when I do run the 6s in my pursuit with the 1518 with the 40mm prop my volts and amps are all within range I put the cc200hv esc in it just to get the data to have an idea what was going on and what direction to go. I know that esc is a little overkill for that small boat but since I bought a fightercat one for my 65'' deep v while waiting for castle to fix the HV it was worth messing with. So with the data I know it won't go up in smoke on 6s. I was just thinking of changing it up but all the help and insite I've gotten has changed my mind

[JIM MARCUM]

Diesel, I read your thread. I surrender to my wise & knowledgable friends. Tony's "borrowed" chart is very informative. It's also true that new to FE folks tend to push small boats beyond their dirving skills and the boats design limits & wind up joining Tony's "ZSP/WTS" Club {Zoom,Splash,Plop/What's That Smell).

But in my defense, my advice was based on using the 6S LIPOS he already has, and my recommendations - for the most part fall within Tony's chart RPM range with a goal of mid 30K RPM, and I did say 5S woulg get "crazy" speeds, but stressed 4S2P for his application. And lacking info on which hull he has I did say my thoughts were a WAG (or SWAG to us old timers).

None the less, I plead guilty to stressing speed over experiance to a new FE boater. I am a racer & a confirmed speed freak, and most of my builds are Offshore or SAW builds. But I was wrong to stress speed over control & safety to a Newbie. I will refrain from such idiocy in the future.

Think it's time for me to Shut The F*#! Up now. JIM

[Slvrbowtie]

Diesel, I read your thread. I surrender to my wise & knowledgable friends. Tony's "borrowed" chart is very informative. It's also true that new to FE folks tend to push small boats beyond their dirving skills and the boats design limits & wind up joining Tony's "ZSP/WTS" Club {Zoom,Splash,Plop/What's That Smell).

But in my defense, my advice was based on using the 6S LIPOS he already has, and my recommendations - for the most part fall within Tony's chart RPM range with a goal of mid 30K RPM, and I did say 5S woulg get "crazy" speeds, but stressed 4S2P for his application. And lacking info on which hull he has I did say my thoughts were a WAG (or SWAG to us old timers).

None the less, I plead guilty to stressing speed over experiance to a new FE boater. I am a racer & a confirmed speed freak, and most of my builds are Offshore or SAW builds. But I was wrong to stress speed over control & safety to a Newbie. I will refrain from such idiocy in the future.

Think it's time for me to Shut The F*#! Up now. JIM

I'm a speed junkie myself and I'm not a total newbie I have a good idea what's going on I asked the original ? Because I seen and read many people running these motors with 6s setups just thought maybe there was something I was missing. Thanks for the info. In my opionion the little boats are much easier then the big boats. I'm still trying to figure out my 65" boat between props and amps.