Osprey lepard 4082?

[Laggylarry]

i have been watching this thread and saw that they used a lepard 5692, i was talking with one of my friends and he has the new traxxas boat and he read that you can use a 180a esc and a 4082 1500kv. I wanted to know if i could also use a 4082 in my Osprey, and if so what kv and prop should i start off with?

current setup
41in Osprey from HK
Castle 240 ESC
Lepard 4074 2200kv (the stock one it came with)
6s2p 10000mah
x445 prop

right now my boat runs fine but after about 5min the esc shuts off with (i think) over amperage error, then kicks back on and i drive it back in... temps usualy around 150-170 on motor and esc batt 100-120...

thanks for the help..p.s. I am kinda a nooby.

[martin]

The 4082 1500kv on 6s will work in the Osprey but its really a bit small. It works well in the Spartan for around 60mph but the Osprey is a big boat compared with the Spartan at 36" & quite a light hull. Martin.

[martin]

6s on a 4074 2200kv is way to much rpm at nearly 49000rpm unloaded in any boat. In an Osprey at 41" its even worse. Martin.

[jingalls007]

That motor seems a bit small for such a large hull. You're soaking up some serious amps that's why your temps are higher on the motor. You're running to many volts, 44,000 rmp's is wayyy to high. You want to stick around the 28k-32k RMP range. you can figure that by multiplying the volts by the kv. In your boat currently, 2200X22.2= 48,840 rpm's. Is your Castle controller a low voltage or high voltage controller? If it's the low voltage controller and you're running 6s, you're going to damage your controller if you haven't already. 6s is the limit on the Hydra 240 LV, most stick with 4s and 5s. Are you running a receiver pack?

I am new to the leopard motors but I would think the 4082 in that hull would suffice. the 1450kv option on 6s would be a good choice. Perhaps someone with more experience with leopard motors could chime in..

Good luck and have fun!!

[Fluid]

Your motor temperatures are too high, you will damage/have damaged the motor. Either run a smaller prop (not really practical on that large hull) or don't run for so long. The ESC is shutting down either because you are overheating the ESC or your packs are depleated and triggered the LVC.

- How much charge do you put back in the batteries after running for 5 minutes?
- Whaht is the brand and "C" rating of your cells?
- Castle 240 LV or HV?
- Have you used a GPS on the boat?

That is a large boat for a 40x74mm motor and 6S. A larger motor is always a better idea. Frankly, a 4082 would be a minimum size IMO. But I would NOT recommend getting one with a 1500 Kv for 6S. That will almost guarantee you will burn something up. Get the 1250 Kv version, you will be much happier with that setup.



.

[jingalls007]

I did a quick search and found your boat here, with a Leopard (1340kv) 5692 3D on 6s. Is that the speed you're looking for? 1340X22.2= 29,748 rpm's. Right where you want to be for a good sport boat.

http://www.youtube.com/watch?v=CQ_IRxJjusQ

[Laggylarry]

- How much charge do you put back in the batteries after running for 5 minutes?
----about 5000mah between the two 6s packs(2500 in each)

- Whaht is the brand and "C" rating of your cells?
----flight max from HK and they are 25c witch should be enought 250a continuous and esc only needs 240a

- Castle 240 LV or HV?
----its the LV 6s max

- Have you used a GPS on the boat?
---- i did last season but i cannot rember what i got for speed sorry.




so with the 1250kv what should i start with for a prop...

@jingalls007
i have seen that and is why i watching the thread i was... how ever i save over $200 if i can use the 4082.... that is why i have asked if i can

[Diesel6401]

The motor that came with the Boat is just not the right choice. I actually just got this Osprey in the mail a few days ago and the first thing I pulled was the motor. It is an awesome motor just not for this hull, another thing it's not a 6s motor. Like Jay said your temps are way too high and damage to the motors is likely. Also at running 6s on that 2200kv motor your motor bearing maybe on the way out .

I thought about running that 4082 on the Osprey for a nice sport boat on 6s, but I am going with a CC1717 instead. I think a 4082 would work fine and you could use the stock motor mount for a easy bolt in.

[Laggylarry]

so if i go with the 4082 1250kv what would be a good point to start with the prop? x452?

[jingalls007]

so if i go with the 4082 1250kv what would be a good point to start with the prop? x452?

Try posting this question in the "Prop Talk" section. You'll get a more defined answer there.

[b.mcdaniel.2009]

so if i go with the 4082 1250kv what would be a good point to start with the prop? x452?

I'd start out with a X447 on 6s and go from there.

[Laggylarry]

ok guys and gals thanks for the info... i might have to break down and spend the extra and get a 5692. that way i have no heat issues and can use biger props and go FASTER! you gave me a lot to think about...

[martin]

If you look in the build section theirs an article on building an Osprey with a 5692 motor on 6s, I think from memory he used a 1340kv & got around 52mph, I think theirs also some video of the boat running in this same section as the build. Martin.