genesis single struggling with speed help me out

[martin]

You will be that much slower than the Spartan, if its the current Spartan it has a castle 1800kv on 6s which gives 40,000 rpm unloaded. Your 1300kv motor is to low on kv for 6s only giving around 29,000rpm unloaded.

[murzyn123]

Why should his be faster? You're running 4s on 2000kv with larger can. You have torque and rpm advantage.

that's what im thinking too

do you think i should try like a m645,x648 or will that be instant death to my esc

[murzyn123]

You will be that much slower than the Spartan, if its the current Spartan it has a castle 1800kv on 6s which gives 40,000 rpm unloaded. Your 1300kv motor is to low on kv for 6s only giving around 29,000rpm unloaded.

im thinking the same so the only solution is a huge prop or different motor right or more cells which i dont want to do
also all that rpm isnt that good either the spartans are cooking the wire drive and crap

[martin]

The Spartans had bad motors in the originals but were 1600kv about right for 6s, they then went to Castle motors & also upped the kv to 1800kv. Cant understand why they went that high on kv ecsecially on a rtr boat. With all the disscutions that went on this forum with Spartans Traxxas still didnt listen to some pretty experience fast electric boaters.

[murzyn123]

The Spartans had bad motors in the originals but were 1600kv about right for 6s, they then went to Castle motors & also upped the kv to 1800kv. Cant understand why they went that high on kv ecsecially on a rtr boat. With all the disscutions that went on this forum with Spartans Traxxas still didnt listen to some pretty experience fast electric boaters.

thats an easy answer its because this way its fast out of the box pretty much with some cooling mods and traxxas dont care if you break parts thats why they sell replacement parts its a business and at the end of the day the spartan is extremely fast rtr and in my opinion a good boat for the money using good quality electronics and faster than my genesis but thats because of my inexperience

[jamespl]

James,Why should his be faster? You're running 4s on 2000kv with larger can. You have torque and rpm advantage.

I did think that after I posted. I was just thinking more voltage and forgetting about the can size and rpm difference.

[dana]

Sell the motor you have, buy leopard 4082 1600kv and m645 prop

[martin]

Selling replacment parts wasnt strictly true as Traxxas were relacing most of the burnt esc & motors under warranty, any one that would have to pay for relacment parts certainly didnt buy Traxxas motors or esc. They relaced them with motors & esc like the Leopard 4082 - 1600kv & the Seaking or T180esc.

[Mattwarner]

Sell the motor you have, buy leopard 4082 1600kv and m645 prop

Would that prop be too big? I was told x445 max but then I only have a t180 so maybe this was due to amp draw, I am going to try an m445 next.

[murzyn123]

Sell the motor you have, buy leopard 4082 1600kv and m645 prop

Yah ill order the m645 anyway and I'll try it on the 3674 for now and later get a the leopard 4082 like u advice
Thanks matt

[Alexgar]

Sell the motor you have, buy leopard 4082 1600kv and m645 prop

i agree with dana on the motor but would reccomend a m545 prop

[martin]

Yes an m645 is a large prop for a 3674 motor, better suited to the 4082 motor.

[dana]

Yes perhaps m545 would be better... With 4082.

[JonD]

Yes perhaps m545 would be better... With 4082.

M445 will just hit 60 mph - that's pretty fast. M545 should easily get in to +60mph range.

Jon

[sailr]

ok guys im playing with my first rc boat all my buddies bought spartans but i wanted a cat so ive bought the genesis

heres my setup

tacon 3674 1300kv
skywing (6s) 200a esc 200a contnous 220a burst
running 2x6s long pack parralel 25-35c 5000mah

i tried these two props
tr-42-29-15 is 42 divided by 29 = 1.44 (pitch ratio)
42mm or 1.65" x 1.44 = 2.37"

tr-43-26-9 would be
43mm or 1.69" x 1.65 = 2.78"
(as long as my calculations are right)
i know the plastic props are crap i broke couple of them in one day but its for testing when i get it right ill buy 2-3 metal props

the balance is set to 13.25" from the far back of the hull and there wasnt much of a rooster tail no hopping nice and steady i thought it could have had more rooster but the drive is all the way up can go higher without notching the opening after 10min everything was cool to touch

heres the problem my friends with spartans on 6s just fly by me if i had to guess 5-8mph faster when i use the speed calc on OSE it shows that id have to go to a huge prop to run 50+ like an m645,x648
in that range

let me know where you think the proplem is i think i either need more prop or more kv motor to keep up with them or more cells but i want to stay 6s since i bought two sets of them and the esc is 6s at best lol

thanks matt
[ATTACH=CONFIG]73999[/ATTACH]

Obviously those 6S packs are two 3S packs in series (end to end) looking at the length of them. They would fit easily but a regular 6S pack may be too "fat" to fit in there. Look at the dimensions of the packs on the Hobbyking website and do the math.