Mean Machine Build!

[lectriglide]

Sounds like your COG is too far back. Where is your COG? It should be anywhere from about 8.75" to 9.5". Start it out at 9" and see what happens.

Your props are on the small side, bump them up to x445 / x645 or m445.

[Kevinlei324]

My COG is currently 1/3 of the length of the hull, from the back of the hull.

Apologies for my skepticism, but would 3mm in prop diameter really make that much of a difference?

EDIT: Oops... Turns out my COG isn't 1/3 from the back of the hull... I currently had it at 8" from the back. 1/3 of the hull would be about 10" from the back...

[WINDBUSTER]

Have you try moving the strut from the bottom flush to 1/4" up or 3/16" with a 1.5 angle back of prop tilt down.and try moving the battery forward a little at a time.It help with my set up.

[brushlessfreak]

THAT IS THE EXACT SET-UP I RUN ON MY MEANIE.LEOPARD 4074 2000KV SEAKING 180 ON 2 HYPERION 3S 5000MAH 45C PACKS AND A GRIM 42X55 PROP.I HAVE FOUND THIS TO BE A VERY RELIABLE AND VERY COOL RUNNING HIGH 50s-low 60s SET-UP.GOOD LUCK

[Heaving Earth]

I ran the same setup almost.Only difference is I ran the seaking 180 esc. I started with x442, I ended at m445. My strut is about 3/16 to 1/4 inch above sponson bottoms. Also, I made a subhatch for mine, so I get no water in there.
I've since gone to a Neu 2200kv on 5s with m440. It screams

[highflyerbill]

The mean mach. is a really good handling hull . Aeromarine knows how to build a race ready hull . Get the strut up 1/4 in above the bottom of the sponsons I run the boat around 9 in from rear of sponsons . The boat flys with a m445 but is a little to free for racing . If you want to race it I would go for a X442 and around 9.5 in. from the rear for your C of G .

[LOVE6S]

Hi Freak, are you running those 3s packs in series with that 2000kv motor?

[brushlessfreak]

Yes love6s they are in series ,i average about 8-10 mins of run time while on the throttle pretty hard.i have been running this set-up for a while now with no issues,except for a lost flex and prop because i was so excited to get her on the water i forgot to tighten the collar on the motor shaft.i have found that a 6s set-up in this boat runs a lot more efficient and cooler that the 4 or 5s i had initially tested ,and believe me this thing screams.start with the strut level and your batts up about 7-8 inches from the transom and go from there.good luck let me know how it goes!!

[keithbradley]

Yes love6s they are in series ,i average about 8-10 mins of run time while on the throttle pretty hard.i have been running this set-up for a while now with no issues,except for a lost flex and prop because i was so excited to get her on the water i forgot to tighten the collar on the motor shaft.i have found that a 6s set-up in this boat runs a lot more efficient and cooler that the 4 or 5s i had initially tested ,and believe me this thing screams.start with the strut level and your batts up about 7-8 inches from the transom and go from there.good luck let me know how it goes!!

That's a lot of kv for 6s. I'm not sure why it would run cooler with a higher power draw, that doesn't make sense unless you went down in kg or prop size.
You should be able to get that speed with significantly less kv/voltage, which leads me to believe you have either a terribly inefficient setup, or the kv of the motor is not accurate.

[Heaving Earth]

I don't believe two 3s packs series On Leo 4074 gets 8-10 minutes. Try timing your run

[brushlessfreak]

I think yhe reason its cooler on my 6s packs is because they are good thunder power packs and my 4s and 5s packs are crappy old venom packs with a low discharge rate.i just kinda threw in what i had lying around into that boat and i agree it is probably inefficient any suggestions would be greatly appreciated as i am fairly new to fe boats.thanks

[bigwaveohs]

The mean mach. is a really good handling hull . Aeromarine knows how to build a race ready hull . Get the strut up 1/4 in above the bottom of the sponsons I run the boat around 9 in from rear of sponsons . The boat flys with a m445 but is a little to free for racing . If you want to race it I would go for a X442 and around 9.5 in. from the rear for your C of G .

We're setting up a mean machine with a CoG in the 9 to 9.5-inch range. For the starting strut depth of 1/4" above the sponson bottoms, are you measuring from the bottom of the strut or from the center-line of the stub shaft?
(Leopard 2000 or 2200 kV motor, probably on 4S-haven't decided which motor yet)
Thanks,
Pete/Chris

[dana]

We're setting up a mean machine with a CoG in the 9 to 9.5-inch range. For the starting strut depth of 1/4" above the sponson bottoms, are you measuring from the bottom of the strut or from the center-line of the stub shaft?
(Leopard 2000 or 2200 kV motor, probably on 4S-haven't decided which motor yet)
Thanks,
Pete/Chris

Measure from the bottom of the sponsons to the bottom of the strut.

[John boat]

i am building the same one an looking for a motor mount how did u mount yours i was thinking of taking mine back to aeromarine an haveing rails put in.