Slow build - 8S Twin Cat

[photohoward1]

Hopefully we can get together this year larry. I have competition for you!

Hello Alain
I am not sure what OFNI is,
But yes 2 X 56106 TP motors, 1,066m Cat, 8S- 6000 mHa per motor.
This is for racing in IMPBA S+T or Open Cat, or Open Hydro classes.

Larry

[Alfa Spirit]

Hello Alain
I am not sure what OFNI is,
But yes 2 X 56106 TP motors, 1,066m Cat, 8S- 6000 mHa per motor.
This is for racing in IMPBA S+T or Open Cat, or Open Hydro classes.

Larry

In english OFNI is "unidentified floating object" ...

[TRUCKPULL]

In english OFNI is "unidentified floating object" ...

Larry

[TRUCKPULL]

Hopefully we can get together this year larry. I have competition for you!

Howard
It will be fun. What you got?

Larry

[jaike5]

Photohoward1, ....how about a photo, Howard !!
J.

[photohoward1]

Big Singles.....

Howard
It will be fun. What you got?

Larry

[TRUCKPULL]

Big Singles.....

Three or four big singles in one boat?

[TRUCKPULL]

Well I got my package from OSE this morning.

In the mean time I have been busy, I filled all the holes on the hull. A crack in the joint on the
inside of both sponsons, The window area was damaged by a flip at over 70 MPH three years ago.
I reinforced it with Carbon Fiber, sanded it all down,, applied Epoxy with Micro Balloons.
Then sanded - sanded - and sanded again. then wet sanded the hole thing.
I also installed two hatch locks at the rear of the hatch.
It is now ready for primer.
Sponsons bottom edges were sharpened and blue printed also.

Larry

[Alfa Spirit]

Hello Alain
I am not sure what OFNI is,
But yes 2 X 56106 TP motors, 1,066m Cat, 8S- 6000 mHa per motor.
This is for racing in IMPBA S+T or Open Cat, or Open Hydro classes.

Larry

Hi Larry,
OFNI means Unidentified Floating Object in french and UFO in english ...

[TRUCKPULL]

I got my two water pumps installed, These are flow through pumps,
This means that when the water flow is higher then the output of the pump, It flows with no restriction.
The flow on these little pumps is over 1 US Gal per minute.

https://bc-robotics.com/shop/12v-4-2w-mini-brushless-pump/

There draw is only 0.400 A, so for the two of them is only 0.8A
To power these I use a

https://www.pololu.com/product/2855

This will take up to a 36V input - with a 12V at 2.2A output.
I ran two of these pumps in my 6S twin all last year with no problems.
Last fall I put one of these pumps in my humidifier it has been running steady for six months now with No problems.

[TRUCKPULL]

I installed two 1/4" X1/4" carbon square tubes
along the top of the inside bottom at 5 1/2" apart
This will add some rigidity and align my servo mount plate and my ESC mounts.
The Push -Pull system, Is made up of two HS5645MG Digital servos.
When placed facing each other, servos will always work opposite to each other.


Larry

[Jesse J]

I hope you didn?t glue in the ballast, Larry; me thinks you won?t need it!

[TRUCKPULL]

I hope you didn?t glue in the ballast, Larry; me thinks you won?t need it!

Jesse The lead blocks and the mag-blocks, were just to hold them down untill the JB dried.
I had drilled each rail with a 3/32" drill, every 3/16" for the total length, to get the JB into them.

If it is too heavy when I am done, I will use balloons, with helium in them for floatation.

Larry

[Jesse J]

Thanks, buddy, that makes me feel better!

[TRUCKPULL]

This Cat is 41 1/2" from transom to the tips.
From the tips to the props is 46"
This boat is no feather weight by any means, Right now I am pushing 22LB ready to run.

What should my CG be? I am thinking 13.5" to 15" from the rear.

Larry