Brushless Wild Cat?

[forescott]

Good question! I thought of reversing the rotation on my ekos to see how it performs.

[FighterCat57]

This little mofo is awesome! I may go up to the 36mm props!

Didn't manage to get any heat out of it messing around on 2s w/32mm props. None, temps in the 80's.

I left the props counter rotating outwards. This is supposed to help keep the tail planted in the water and will hopefully help with a more forward COG as the motors and ESC's put the COG forward more than I wanted.

Didn't have time to put it in real water, just the pool, but it literally jumped on plane and launched like a hole shot!

Don't know if I can get a GPS on it, but I'll try sometime.

Very cool project!

Parts list:

2 x 35a HobbyKing ESC's
2 x 2445 2900Kv Inrunners
2 x 32mm Venom 32mm CR Props (Venom Racing 3 Blade Prop D32 P1.4 CR EKOS VNR1982 & D32 P1.4 EKOS VNR1981)
2 x 2s1p 2200Mah 20c Lipo Cells
1 x #128 brass tubing to shim the props

Total upgrade cost including Lipos: $95 plus Rx...

[turboed13b]

how do you put the esc's into the reciever? real boats have their props rotating outward. are you running two batteries or just using one as an extra?

[FighterCat57]

how do you put the esc's into the reciever? real boats have their props rotating outward. are you running two batteries or just using one as an extra?

I used a Y adapter with the red wire pulled on one of the ESC sides. (prevent BEC overlap)

The battery packs are in parallel, 2s2p 40c 4400Mah total configuration. A full size 150 x 50mm battery would not fit, so I used two smaller format lipos instead.

[FighterCat57]

OK, one of you smart guys should have told me that the cables lay in the same direction and switching them to counter rotation, I would need to get a cable laid in the opposite direction!

I noticed a change in drive sound and quickly pulled the drives, the cable is OK, but I quickly noticed it was laid in the opposite direction as I was using it.

So, add a new drive cable to the list!

I think Jeff can make me a pair. His cables are top notch. =)

[FighterCat57]

The cables, notice the odd looking one.

[FighterCat57]

Approximate measurements:

3mm hard shaft, 1.2mm cable, 18mm long

Or... 1/8th & 5/64ths 7 inches long

[FighterCat57]

...or I could just get some .047 music wire, some silver solder and build a set myself... =)

[turboed13b]

will the .098 flex cable work?

[FighterCat57]

That's like double the size. The current cable is .047 and the couplers are setup likewise.

[turboed13b]

a lot of people use them in the mini rio's i will check later to see if the tubes are the same size.

[FighterCat57]

a lot of people use them in the mini rio's i will check later to see if the tubes are the same size.

I'm pretty sure they will fit in the tubes, they are #128 sized tubing.

It's the couplers, they would need to be larger to accept the larger wire.

Although, that's easy to drill out if there's Left/Right or wire drives already available for 3mm (#128) brass stuffing tubes.

[turboed13b]

anything new?

[FighterCat57]

Yeah, I got the 047 wire and soldered up a set of drives!

The only problem is the stock tubing is bent like and "S" and the wires bind up too much.

I have to make a decision to either scrap the wire drives and go back to the cables without counter rotating props... or... straighten out the brass tubing for a clear shot for the wires.

Which... I'm most likely to heat up the epoxy and replace the brass with a straighter tube. Since it's #128 brass, I happen to have a couple of pieces of it right here.

Just time now... My other half is off for a few days, so busy doing other stuff. =)

[FighterCat57]

Photos