Fightercat/Cheetah Insanity Build

[Insanity Plea]

Purchased this untouched hull, upon receipt I noticed it has a fightercat tag in it. plans include a TP 4060 2040kv, seaking 180a v2 & speedmaster hardware. Hoping for 70mph on 5s power.
Last night it got 1oz of epoxy in each tip, and an attempt of 1oz in the nose but it mostly ran down into the tips. I laid some fiberglass in the transom also.

My first question... With the hull having the Kevlar laid out in it, should I tape up the seams? I would have done it without hesitation if the Kevlar had not been in place.

IMG_3199.jpgIMG_3330.jpgIMG_3329.jpgIMG_3323.jpg

[kfxguy]

Does the Kevlar cover the seams? If yes then your answer is no. If it does not cover the seams then yes I'd reinforce it. I hope you can reach your speed goal, 5s will be a little difficult with that hull because it's pretty draggy. Now if your 5s in parallel with two 5s packs then it's doable, just make sure you have enough esc for it. I don't think a dealing 180 is quite enough in my opinion. I did build one of these for a guy and we got over 70 with it on 6s using a 1500kv new 1521. You might be able to get there (I hope you can) but be aware it may take a bit of time dialing it in.

[Insanity Plea]

The Kevlar does cover the seams. I will be running 5s in parallel but if I don't get 70 out of it I won't be disappointed, it was just a max expectation for the setup. I've also got another one that I will be building over the winter or maybe next spring. I've got a TP 1570kv for that one, my plan is to run 5s for cruising and throw 6s in it for speed once in a while. I've done full blown 2-stroke builds but never an FE, these cheetah hulls are laid up light. 2-3/4 pounds before I started.

[Tamelesstgr]

Great looking build Scott, I love those V2 180 esc, such a good design with the layout and cooling block.

[Insanity Plea]

Great looking build Scott, I love those V2 180 esc, such a good design with the layout and cooling block.

Thanks Ken, this one is just practice for my next & final FE...
IMG_3241.jpg

Next year it's back to racing 2 stroke (wife approved). Having three kids in two years shut down the garage for a while.

Did you get your new boat in the water?

[ray schrauwen]

The front inside seams of the fork are not covered in Kevlar. I would do those even though very difficult.

My crash wash unusually hard but that's where it breaks.

[Insanity Plea]

Good point, I'll check it out. Thanks

[Insanity Plea]

Anyone had to offset the strut to the starboard side to counteract propwalk on this hull. I offset 3/16 on my gas cats.

[fweasel]

I've read a lot about the Cheetah, but never that it suffers from prop walk

[Insanity Plea]

I have not came across it either, but figured I would ask before I started drilling holes. Thanks for your reply

[kfxguy]

Anyone had to offset the strut to the starboard side to counteract propwalk on this hull. I offset 3/16 on my gas cats.

Nope

[Fluid]

Anyone had to offset the strut to the starboard side to counteract propwalk on this hull. I offset 3/16 on my gas cats.

Don't know if I "had to" but mine is offset 3/16". I do this on most of my builds, on the Cheetah I used almost no left rudder trim to go straight. The offset will depend on the prop used. I started with a 1445 Kv motor and an x452 prop and it ran straight. With a 1900 Kv motor and smaller prop - same thing. There is no downside to offsetting the drive on this hull.



.

[Insanity Plea]

Don't know if I "had to" but mine is offset 3/16". I do this on most of my builds, on the Cheetah I used almost no left rudder trim to go straight. The offset will depend on the prop used. I started with a 1445 Kv motor and an x452 prop and it ran straight. With a 1900 Kv motor and smaller prop - same thing. There is no downside to offsetting the drive on this hull.
.

Thanks, maybe I'll follow suit since it didn't seem to hurt anything.
I'm hoping to get out there tonight and get some stuff done, over the weekend at the least. Pics to follow

[kfxguy]

Don't know if I "had to" but mine is offset 3/16". I do this on most of my builds, on the Cheetah I used almost no left rudder trim to go straight. The offset will depend on the prop used. I started with a 1445 Kv motor and an x452 prop and it ran straight. With a 1900 Kv motor and smaller prop - same thing. There is no downside to offsetting the drive on this hull.



.

Good info. Thx. I might try this on my narrower cats.

[Insanity Plea]

It might not be the best way to do it, but it works for me... 1/8 offset stbd side...

IMG_3361.jpg
IMG_3366.jpg
IMG_3369.jpg