MHZ XCAT 1400mm (55") build.

[Rich]

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Here is a pic of the "radio compartment" came out good. After spending a few hours getting the escs to work, I took it out and I got 52 mph I'll post a link for the video. When I upload it. The cooling pickups I made for the outboards worked awesome! It looked scale with the water spraying out! It was a windy day so I was nervous about it blowing over. I felt it almost did on one of the passes going against the wind! Overall I'm happy with the build. Now I'm going to get the motor wires sealed up and some odds and ends taken care of.

[1coopgt]

Very Cool build.

[Rich]

Very Cool build.

Thanks! Here is the video!

[1coopgt]

Nice maiden run.

[fweasel]

Sounds amazing

[Rich]

Sounds amazing

It does! I hope the gears quite down a bit though. I have the 1/4" drive version and the mesh seems way better. We will see what happens with that. I need to wait for a calm day to get a better idea of the cg. I also noticed that the inside prop comes out of the water in a turn. She feels like she is very heavy in the turns compared to my smaller hulls which is to be expected of course. Interesting feel though. More to come later

[Rich]

I finally got it on some calm water. I'm having it chin walk though any ideas how I can fix this?

[1coopgt]

I don't think I've seen a Cat Chin walk. Hopefully some with more experience will come alone with some ideas . Got the CG right? Both motors and props at the same height and angle? I know obvious questions .

[Rich]

Cg is in between the reccomend per mhz, about 30%. The right prop is kicked to the outside of the boat compared to the left. Angles are pretty much the same. I'm going to move the batteries back to get more weight on the props since I feel the cg could be moved back more.

[Jesse J]

I finally got it on some calm water. I'm having it chin walk though any ideas how I can fix this?

Need video please .. gotta see just what she be doin!

[Rich]

Need video please .. gotta see just what she be doin!

I am uploading one now. Looking at the footage, it might be more of an alignment issue with the motors. It seems that the backend sways back and forth like its not tracking. I have had this issue with one of my rc trucks back in the day and it was the rear toe was off. I wonder if my steering linkages are not ridged enough and causing flex at high power?

[Rich]

Here is what I am talking about. You can see it about the 1:09 and 2:09 min marks as well as others. Let me know what you guys think it is. Your help is greatly appreciated.

[1coopgt]

You need to check the squareness of the motors to each other and the boat . I didn't see chin walk but i did notice the back end of the boat wiggling back and forth. How close are you to 100% throttle?

[Rich]

I would say 80% and at full throttle. I'm checking the squareness now

[Rich]

I think I fixed it. Here is how it runs now. When I hit my own wake it wobbles a little bit then settles when it hits clean water. What do you guys think?