Leopard 4074 1774 kv...

[Rcforever27]

Just wondering if the leopard 1774 is a direct drop i'n for the Spartan? And will tht work with a seaking 180 amp esc? Thanks for any help!

[JPriami]

It will fit in there. And work with the 180 esc

[Rcforever27]

Ok thanks alot ! You've been a real great help!!!

[mavdriver]

ok what prop would you use also , would 6s be good for the 4074 /1774 kv ?

[JPriami]

Its always good to research the home page of a manufactures parts for specs if your not sure.

http://www.leopardhobby.com/product/product_veiws.asp?id=1323&functionID=01020207

I don't see the 1774kv listed on their site but using the best guess method,placing it between the 2000kv & 1400kv I'm guessing it can run on 6S but that will be near but not at it's highest recommended voltage. So you would be ok on 6S.
I'd try out a 440/3 blade.

[Diesel6401]

ok what prop would you use also , would 6s be good for the 4074 /1774 kv ?

I wouldn't. That's almost 40k unloaded rpm. Way too much. This chart will help you. The green bar is your target rpm.

I run that motor in a 29" cat and hit 50.1mph on 4s.

[JPriami]

Yeah I forget some people aren't as crazy as me lol

And it is good practice to have lower rpms for sporting around.

[Rcforever27]

It's the Leo 4074 I bought it from ose... It's 1774 kv.... It's black.... :)

[mavdriver]

It's the Leo 4074 I bought it from ose... It's 1774 kv.... It's black.... :)

are you running 6s and what prop ?

[Rcforever27]

prop & batteries

i have a prather 230, 215 & a 225 coming in the mail and im running 6s venom 6400mah 25c or 30 c ... i forgot at work right now lol! and my second set of batteries are 5000mah venom 25 c........ or i can always go with the stock prop... but note all tht stuff is in the mail... still running stock motor & speed control..... with all the cooling upgrades...:)

[dag-nabit]

i have a prather 230, 215 & a 225 coming in the mail and im running 6s venom 6400mah 25c or 30 c ... i forgot at work right now lol! and my second set of batteries are 5000mah venom 25 c........ or i can always go with the stock prop... but note all tht stuff is in the mail... still running stock motor & speed control..... with all the cooling upgrades...:)

a couple suggestions, observations.

The 6400 30C packs should be OK, but if your 5000 packs are only 25C you might be on the edge for pulling overload amps on spikes, especially if you try running bigger props.

Personally, of the three props you have chosen, I think that the 215 is the only prop that is practical in size for that motor. Maybe a 220. I believe that motor is only rated for 72 amps.

I will be running a similar setup, T180, and Tacon 1700kv on 6S. I am going to start with a Prather ss215, and have a ss220 ready to go that I will try after I confirm all is good on the 215. I have an Eagle tree System and will be monitoring things closely as I prop up.

I don't think OSE has specs on those motors, but I think that one may be a D wind. I would suggest playing it on the cautious side and set your timing advance on the ESC at around 3* timing advance. unless you can confirm it is a Y wind, then you could experiment a bit with advancing the timing.

Kevin

NOTE: I'm not looking to break the speed record, Once I get things trimmed out, If I can get reliable, stable runs in the high 40's or low 50's I will be happy.

[Rcforever27]

Lol yeah same here ! I def learned alot joining these forums! Can't wait to hit the pond again!!!!

[JPriami]

Listen to Kevin. He's a smart fellow here.

[Rcforever27]

yeah i def will! he said hes gonna be running a similar setup as me ... sot tht will be good ..... i printed his last post , the long one for my reference.....

[dag-nabit]

yeah i def will! he said hes gonna be running a similar setup as me ... sot tht will be good ..... i printed his last post , the long one for my reference.....

Just a heads up, you will likely be on the water before I am, The spring here has been cooler than normal, and we had more snow this year, so I'm thinking we are going to be lucky to have the ice off the lake by the middle of May.

So I'm going to be interested in hearing of your experiences to help me dial things in.

BTW. I finally got the rest of my parts for my Spartan and finished it up yesterday, now just have to wait for an opportunity for my daughter to finish up hers.

I will be posting some photos later for those interested in seeing the mods. (nothing really new, they've all been done before.)

Kevin