FDM 32 V-Hull Build - Need Build Advice

[Tamelesstgr]

Switching things up a little bit on this build. Going to be moving to a Leopard 4082 with 1450kv and the thought process is that I can run 4s, 5s, or 6s in this hull based on the water coditions. So I will be upgrading the flexshaft and stuffing tube to support .187 flex cable, just need to decide if I want to run a telfon liner or not. Might not see water for quite some time, but in the long run I think it will be what I want.

[lt130th]

As long as you have an ESC to handle the Amp's, (and the hull can stay on the surface) you should be able to get into the 70mph range with that motor, on 6s. That's going to make things a bit heavier so make sure your internals are really, anchored & supported well, so nothing comes loose in a flip at those speeds. You'll definitely like it.

[lt130th]

What are your plans for paint on this one? I like how your Shockwave paint turned out.

[Tamelesstgr]

I plan on using a Seaking 180 amp ESC. Now that I know what motor I will be using I can get to work on the rail layout. I want this thing to be really strong, so once I have the mounting points where I want them I plan on drilling a series of holes in the bottom of the fiberglass rails for when epoxying to the hull. I want to add an aluminum stuffing tube support as well, then I need to figure out the servo tray. Only thing that I know us going to be a pain is prop changes and flex cable maintenance since the rudder is inline.

Paint is still up in the air a little bit. I want more of a classic cigarette look, so simple lines and colors, I have a few ideas. I have a dashboard decal picked out, I'd like to do some scale looking drivers too for the cockpit.

[Tamelesstgr]

Time for an update. I really had hoped to make this a go for this summer, but I decided to build it for what I want, not throw it together just to break stuff and tear it apart again. Finally made some progress on my motor rails. I had to cut down the sides to have room to run my cooling lines. Originally I had wanted to mount the ESC above the motor.

20150827_213837.jpg

FDM a.jpg

FDM d.jpg

FDM f.jpg

FDM g.jpg

[Tamelesstgr]

Decided to go .187 flex with .250 stuffing tube, and I wanted a flood tube as well for adustability so I dove in. Once I get around to setting the rails in epoxy I can determine how to bend the stuffing tube. I also need to fabricate a crossbrace to hold the tube in place.

FDM h.jpg

FDM i.jpg

FDM j.jpg

FDM o.jpg

FDM p.jpg

[Tamelesstgr]

For a Flood tube I wandered around Home Depot and settled on 1/2" ID PEX tubing and I drilled an end cap to support the stuffing tube. Once I epoxy everything I think it will be good with the crossbrace mounted between the rails.

FDM r.jpg

FDM s.jpg

FDM k.jpg

FDM t.jpg

[lt130th]

Silicone the stuffing tube at the chamber endcap. Then you'll have enough play for strut adjustments, & won't need a cross-brace. That's essentially how a Pro Boat Impulse 31 is setup...

[Tamelesstgr]

I was going to epoxy that plug into the PEX and then epoxy the stuffing tube in place as well.

[lt130th]

Here's how the Impulse 31's flood chamber & stuffing tube looks...

6004.jpg6005.jpg6006.jpg6007.jpg

[Tamelesstgr]

Sweet, looks like I am headed in the right direction.

[Tamelesstgr]

Some progress on the business end, ProBoat Gieco Inline rudder setup leading in to the flood tube:

20150917_231844.jpg

20150917_231913.jpg

20150917_231932.jpg

20150917_231941.jpg

[Tamelesstgr]

Some updates, at times I wish I just bought a ARR or RTR, but I'm sticking with it. Had to shorten my flood tube and reduce the angle because it was causing binding of the flex shaft. The upgraded .187 shaft has a much longer shaft where the prop and drive dog attach. Need to keep the stuffing tube straight entering the hull until the actual flex wires can start to bend in the stuffing tube. Lots of trial and error, but here are the rails and servo mount I made by hand:

20160311_214924.jpg

20160311_214928.jpg

20160311_214934.jpg

20160311_214942.jpg

[Tamelesstgr]

20160310_222207.jpg

20160310_222212.jpg

20160310_222216.jpg

[Tamelesstgr]

Got the Flex cut last night and soldered the tip with my home made crucible.

20160316_222355.jpg

20160316_223051.jpg

20160316_223058.jpg

20160316_223105.jpg

20160316_223110.jpg