Other options.

[Zen]

I have a tunnel in the 27 inch range. I now run a lep 3650 2090
Kv. Kicking around the idea of getting a new motor and using the 3650 on another another boat. I tried various props and it's quick but not quick enough. What motor would make the boat significantly faster? Using a 120a speaking. I have room for 2 2s batteries. I am using a 3s now. It doesn't have to be a lep. It could be any other brushless manifactor. Like castle or turnigy or whatever. Thanks

[tlandauer]

I have a tunnel in the 27 inch range. I now run a lep 3650 2090
Kv. Kicking around the idea of getting a new motor and using the 3650 on another another boat. I tried various props and it's quick but not quick enough. What motor would make the boat significantly faster? Using a 120a speaking. I have room for 2 2s batteries. I am using a 3s now. It doesn't have to be a lep. It could be any other brushless manifactor. Like castle or turnigy or whatever. Thanks

AquaCraft's 2030kv (so-called UL-1 motor) will be good on 4s.
Is this an outboard tunnel?

[Zen]

Yes.

[tlandauer]

NOTE: if your Leopard 3650 comes with a 3.17mm shaft, then you need to reconsider, that's why I asked if it is out board, because the next question is which brand? All mine are O.S. outboards with conversion kits ( motor mount) for electric power and the collet is 5 mm on the motor end .
Depending on the hull, I have 4 tunnels, two of which are ML-PS295, one AC TS-3 and lastly an AC VS-1, three of them have the mentioned motor and only one with a TP 3630 2100kv, that motor is my favorite.
TP motor has changed their spec since, but here is the chart and anything around that kv would be good for 4s.

http://www.tppowerusa.com/motors/build-your-own/tp-36xx-series/tp-3630

[Zen]

Yes I use OS legs also with a conversion kit. . Might get a lawless to try out. I have lawless on all my 1/4 scale gas tunnels except one. That has a Gmorty. And compared to lawless the quality doesn't come close. But it still is a great leg. I like the tp. Never knew anyone who ran one. So I never seen one up close. I'll check it out. Thanks

[tlandauer]

Just in case you get one of those TP motors, if it happens to be a "D" wind motor, lower the timing on your ESC between 0-4 degrees.
"Y" =15*
"D" =low, anywhere between 0-4* would work.
Yeah, Lawless is top notch. I see gas guys run them and the quality speaks for themselves just by the looks of it.
O.S. in this class ( 3.5) is better than the others though, IMO. i.e. compared to the Stiletto, Hyperperformance .
There are a few new ones that OSE sells and I am very curious about their quality, no one seemed to have tried them yet.

[Zen]

Yea, and the guy who designed them and builds them, Fred, is very knowledgeable. He is great. Any question or problem, he is right there with support. Great guy. I have not held the 3.5 in my hand, but I'm sure they are bullet proof like all the gas ones I have. Now that I'm dabbling in electric I think I'm gonna get myself one for xmass. I deserve it. LOL