Twin powered carbon Rivercat build

[Rocstar]

kfxguy, is there any benefit running the strut tubes that close and down the center of the boat?

Not that I know of. Just did it the way most twins I've seen are done.

Yes, we usually try to keep the drives as close to the tunnel as possible. Helps with steering and handling. How crucial it is to do so is debatable, but it doesn't hurt.

[kfxguy]

Yes, we usually try to keep the drives as close to the tunnel as possible. Helps with steering and handling. How crucial it is to do so is debatable, but it doesn't hurt.

There you go! I would take what Joel says to the bank. He's done quite a few more twins than me! I think one of the boats I looked at when positioning the drives was a Rivercat he built.

[Rocstar]

Looking good by the way, but be careful.....Once you do twins, one motor just isn't as satisfying.

[kfxguy]

Looking good by the way, but be careful.....Once you do twins, one motor just isn't as satisfying.

Yea...I haven't even run this one and I've got something else in the works :)

[readyfireaim]

How's she coming along?

[kfxguy]

How's she coming along?

I kinda dropped the ball on it. Trying to get other people's stuff done. I ordered the last pieces to the puzzle today....the smaller diameter rivet nuts. The hatch bolts should be getting here any day. I'm going to untape the whole boat tonight and put battery trays in and clearance the side rails for the 4s packs to fit better. I may end up making a quick harness to change up how I'm running the batteries, whether in series or parallel.

[kfxguy]

Finished this last weekend and went ran it. Loads of fun. Love the sound and stability. Noting got even warm. I ran 56 on 3s and 67.8 on 4s. Not even the props I was going to end up with. It kept pushing the rudder back and the bow was lifting wanting to flip. That cheesy plastic breakaway screw isn't good enough at this speed. I have some brass ones coming. That was also with 40mm props. Real mild setup. Here's a video even tho I rolled it over in it own wake

[srislash]

Ahh, now the twin bug has bitten!

[kfxguy]

Ahh, now the twin bug has bitten!

Yes I can't deny it. I like it but I still don't like the extra cost, complexity and extra build time. This boat was actually sold a couple days ago which is what prompted me to finish it. Too many irons in the fire do I had dropped the ball on it. Now that I finished it I'm sorry I sold it but I'm planning another build like it with a few changes. This was more or less practice and to see if I'd like it so I didn't put a ton of time or money in it. Here's some pics






This was on 4s (2 2s packs in series) with cnc x442 un modded props) you can see my esc connector configuration. One way I can run an individual battery to each esc and the other for higher voltage (up to 5s) I can run two smaller packs in series.

[srislash]

So that was 4s1p on twin motors?

[kfxguy]

So that was 4s1p on twin motors?

Yes. I'm not up to speed on the 4s1p thing but it was a 2s pack on each side run in series to make 4s and then feeding both motors. Had good runtime too that way. The 3s setup (seperate 3s pack per motor) should be well over 5 minutes. I ran it for about 4 minutes and packs were at 4.0v per cell. I'm mapping out my next twin build...

[Rafael_Lopez]

Looking good Travis. What KV are your motors?

[srislash]

Yes. I'm not up to speed on the 4s1p thing but it was a 2s pack on each side run in series to make 4s and then feeding both motors. Had good runtime too that way. The 3s setup (seperate 3s pack per motor) should be well over 5 minutes. I ran it for about 4 minutes and packs were at 4.0v per cell. I'm mapping out my next twin build...

Amazing, I guess it is uber light so it does not take much oomph to get it going and keep it there.

[kfxguy]

Looking good Travis. What KV are your motors?

Little 36mm 2550kv tp motors

[kfxguy]

Amazing, I guess it is uber light so it does not take much oomph to get it going and keep it there.

Weighs 8.172lbs with batteries