Help me build a Sniper 45"

[RandyatBBY]

Any thing over 160 ounces inch.

[kevinpratt823]

Any thing over 160 ounces inch.

Thanks Randy. Anybody have input on the type of wind and timing settings for a Castle 2028?

[RaceMechaniX]

The 2028 is a Wye Wind, start with 10 Deg.

[kevinpratt823]

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Thanks for all the input, here's a quick update......
Hardware is all mounted, a couple CF batt trays are on the way, and that will just about finish things off until it's ready for trial runs in the spring. I think I'm just going to velcro the esc outside the rail near the motor for now, until I figure out what will work best for CoG and weight distribution. I also painted the windshield and scoops, but I've been caught up lately running cars at an indoor off road track, so they've been getting a lot of love lately also.
I would definitely like to hear input for prop suggestions though. I picked up an X467, X572, and X470(3), is this a good place to start, or are they too much prop for this setup?

[Punisher 67]

Absolutely not with the X470/3 way to much prop for the 2028 , I run a X460/3 on my Neu 2230/1Y and am very happy with it . I would start with a X455/3 - X457/3 for the first shake down run

[kevinpratt823]

Absolutely not with the X470/3 way to much prop for the 2028 , I run a X460/3 on my Neu 2230/1Y and am very happy with it . I would start with a X455/3 - X457/3 for the first shake down run

What about the 2 blade X467, or 2 blade X570, both too much? I can see now how the 1/4" shaft limits the selection, I didn't find much on the OSE store, should I just scrap it(shaft) and go with a shaft that is stepped down now?

[Punisher 67]

Thats still a lot of prop even with a 2 blade

[kevinpratt823]

It floats! This is one of my first runs, with an X457/3 on 10s2p. GPS had just over 60mph on this run, 67.4 with the strut down about 3/16" on a previous run. Now for a bit of fine tuning, gotta try to take some of the positive angle back out of the strut to get the rooster tail a bit flatter, but the bow grabs in some turns and causes it to knife unexpectedly, so I want to calm that down a bit also. COG is as far back as I can get it with this layout for now, and trim tabs were way up and prob not even doing anything. Overall, she ran pretty smooth for starters.

A BIG thanks to those who helped me in this thread, especially Tyler(RaceMachanix) and Punisher67!

[Punisher 67]

Beautiful run Kevin you should be proud but for sure the strut was a little high on the first run . At 67.5mph you are doing great thats pretty much where I am with my 2230/1Y Neu powered Sniper and about 75.0mph with my Lehner 3080 Sniper but that one is a bit of a swine on sucking amps.....LOL .

You are welcome also ............Punisher 67 = Peter.......

[kevinpratt823]

I moved my motor back about 1.5" to try and bring the cog back a bit and it definitely helped with the knifing, runs more consistent now. The boat is pretty heavy though, so in big chop it will definitely submarine if it hops the wrong way.

I have moved the strut down as far as I can with the flooded stuffing tube, and can't put in negative angle as it will make the bow "heavier", and it seems to me I still don't have enough prop in the water. The next step up for a 3 blade is an x470, and that is way too big, would a x465 2 blade seem like a reasonable compromise to get some more blade in the water? Will I lose or gain speed?

[jcald2000]

How were the temps??

[kevinpratt823]

How were the temps??

Temps were up there on the castle data logging, almost 200, but actually came down a bit(175-ish) when I bumped the timing up from 10 to 15 deg, and I was peaking at just under 200 amps. I can't help but wonder if it could be partially because the prop isn't loaded enough. With the flooded tube/strut setup, the prop is close to the transom, and the center of the hub is almost 1/2" above the bottom of the V. Makes me wonder if not enough of the blades are making it into the water.
My Castle burnt up last week and I can't get the data logging to work on(windows XP) the SF240 proHV, but that's a whole other thread.....

[kevinpratt823]

Update: I haven't been able to get the 67mph I thought I had originally, may have been a false reading, I am now running consistently around 57mph, and a 2 blade X465 seems to let the boat handle better with the same speed. Thinking of de-tounging an X470 and giving it a shot, as with the x465 motor was barely over 120 deg, and esc wasn't much hotter. Currently running a SF240hv pro esc, after the castle smoked.

As I said above, I feel that the blades aren't reaching into the water enough, being that the strut won't get down far enough with the flooded tube, and the prop is pretty close to the transom, any opinions about using an extended strut to bring the prop back a bit?.........

[RaceMechaniX]

Did you scuff the bottom? I would be very careful with a X470. That is a lot of prop on 10S.

[kevinpratt823]

Did you scuff the bottom? I would be very careful with a X470. That is a lot of prop on 10S.

I did scuff the rear 1/2 a bit, I'm sure it could use a re scuff though. Honestly I am pretty pleased with how she runs at 57 with the 2 blade, but I have a hard time leaving it be if you know what I mean, always trying something. Any opinion on the extended strut Tyler?