New catamaran project

[rockwerks]

One suggestion for these HiModels: watercool & change the capacitors, they are way to small for this capacity...

Or just add more caps

[CornelP]

Been there... the original ones are a bit of a suspicious origin. But yes, adding more will take the strain from the ones fitted.

[Alfa Spirit]

I' m waiting for motor, cooling jacket and aluminium motor mount from rcworldwide.com.hk, they aren' t very fast ...

Now, I' m preparing the hull: reinforcement inside, tight box filled with floating material, exhaust pipes , and soft design modifications ...
After I' ll do the paint job

[Alfa Spirit]

that may work, if you can run your stuffer tube all the way into the strut

That work fine with bigger teflon washers and brass tube inside the strut, That' s perfect. With the Graupner drive dog I can use 3/16" propellers without adapter

I think that' s the best solution for HOTR 4mm strut. Easy, cheap

[steveo]

i had a crack in my 4mm and caused the shaft to spin in side the square , so i got a octura 3/16 bearing drilled out the strut and and installed, very easy to do and no adapter and easy to remove shaft to clean, just like every other setup is

[Alfa Spirit]

The XPower 540 XL / 3674 11 turns, 1510 RPM/Volt arrived today The motor looks a very high quality

Aluminium motor mount from RCworldwide is a very nice part

[elvish]

Hey,
Nice to hear news from you,
Any updates on the build?

[Alfa Spirit]

I whent to RC shops but I didn' t find carbon. So I bought fiber glass layers and epoxy.
I' ll first reinforce the joint around the hull and after the bottom and sides with two thicknesses of fiberglass
The aluminum rudder from HOTR was badly mounted (inverted). Now it' s OK, All screws are on the same side and rudder is perfectly perpendicular to the cat

[Alfa Spirit]

XPOWER 540 XL BRUSHLESS DATA SHEET

[Jeff Wohlt]

Gee, the 8XL is the same specs as Feigo. I wonder how close they are? I do like the pinned motor end.

Where dio you get this from? I have seen several distributors.

[Alfa Spirit]

I bought mine here . Those motors are made by FSD Motors

http://stores.shop.ebay.fr/rcworldwi...0Q2em14?_pgn=1

[CornelP]

XPower and Feigao are pretty much the same... at least the same factory. When one of my suppliers placed the order for some XL's, he was asked if he wants Feigao or XP... Actually, if the order is consistent, you could get your own logo and color.

[Jeff Wohlt]

Yep...FSD or some plant like makes them both.

[Alfa Spirit]

Now I' ve got all parts to make a nice job

[Alfa Spirit]

I bought an ETTI water cooling plate for my HiModel GX 200

[winner]

wow man the boat looks great! and dang that motor is massive!

[norbique]

how much was the etti cooling including shipping?

[bustitup]

how much was the etti cooling including shipping?

$13 plus shipping which i think is $9

http://www.offshoreelectrics.com/pro...prod=etti-a044

[Alfa Spirit]

I bought an ETTI water cooling plate for my HiModel GX 200

I paid 14 €uro including shipping cost to France, here' s the link

This is the large sized

http://cgi.ebay.fr/ETTI-Wasserkuehlu...item43956f2d90

[Alfa Spirit]

wow man the boat looks great! and dang that motor is massive!

Thanks, All parts: hull, ESC, motor, .... are cheap but are matched

[Alfa Spirit]

Hi,
I' m not sure that flex/shat coupling will be strong enough.
I think to reinforce the end of the square flex cable with strong glue Is it a good idea? Thanks

[cugino]

Hi Alfa Spirit,

your project is very impressive for me. Im going to build this cat either.

On picture above i can see very nice prop in fitted in graupner DD. As i remeber, graupners DD has outer dia. 10mm and to props seem to be perfectly aligned with DD. Octura has about 8mm hub dia. So i prefer props like yours. Where does your prop come from?

Thanks, Cugi.

[elvish]

Hi,
I' m not sure that flex/shat coupling will be strong enough.
I think to reinforce the end of the square flex cable with strong glue Is it a good idea? Thanks

Now I' m working for nice paint job I will do the paint job before components assembly
Attached Images
ztuning 1284.jpg (64.6 KB, 11 views)

it will hold just fine, glue will not add to its strenght ,

[Alfa Spirit]

Ok, thanks Elvish

The aluminium propeller is a USA brand may be AMPS or something like that. No brand on the prop, only 2029

My cat project is a cheap RTB and I' m pretty sure it will rock

[Alfa Spirit]

Hi,

I want to order propellers for my cat' I hope you can help me.

Cat' HOTR, 6S batteries and motor 540 XL 1510 RPM per Volt

Thanks

[Alfa Spirit]

OCTURA X440/3 or X447/3 ?

Which one will be the best for my setup? I really want to order 3 blades propeller

Thanks

[KillerDave]

I understand what you mean.
I will install a brass tube 4mm inside and 5mm outside, approx. 15mm long. Like this the shaft won' t move, only a small amount of play

Hi,

I have just modded my original TFL strut because I might be getting the dual motor set from e-bay, The problem with this is that it runs 4mm stingers and I want to use 3/16" prop's...

I turned down a piece of oil-lite brass 4mmI/D and 4.762 O/D. It's a lovely snug fit now and runs true.

I think this is the way to go if you want to use 3/16 props on any 4mm shaft.... IMO!!

[Alfa Spirit]

Hello guys, I' ve found an interesting product from 3M : Thermally conductive pads. It' s not expensive , very easy to work with. Advice please

3M Thermally conductive

[norbique]

Very interesting! I'm just modding a 100A mystery ESC. I sanded the FETs flat and I will glue the heat-sink on them with a thin layer of JB Weld.

[Alfa Spirit]

I' m waiting for 2 pads thermally conductive from 3M, price is 4 € / piece :

Here are the parts for direction channel Very clean.