32" Mono Build

[martin]

Remmie a lot do this mod on the spacer using a piece of 6mm bore silicon exhaust tube squeezed between so that you can move the stinger to positive or negative whilst still maintaining a seal. Martin.

[martin]

Remmie what settings did you use on the 180a esc ecspecially the lvc, have you had the lvc cut in to soon as this is a common problem with those esc. Thanks Martin.

[Remmie81]

Hi Martin,

Well It looks like i found the sweetspot regarding angle of the stinger, and with this spacer im good.
Good idea of the 6mm silicon exhaust tube. I will look if I still have some laying around and try that as well! Thanks mate!

Programming of the 180ESC
No Brake
Hard set to 5 Cell Lipo
LVC = off
Timing was set on lowest, but changed that now to 7,5 but I think I go back to lowest. Cant remember what it was. 1 or 3,5.
Compared with the carbon prop i lost 3km/h when I raised the timing. Will do a test again this week to see what happens

As soon as I hear the revs drop a little bit I stop driving and end up with 3,7Volt per cell. Recharging the 5000Mah packs take then 4000Mah.
Run time is then just below 4 minutes full speed passes back and forth. Water is to small so I have to make small turns everytime.

With my run of yesterday the temps were pretty good:
Engine: 37 C
ESC: 45 C
Lipo: 50C

Cheers,
Remmie

[martin]

Yes most run these esc with no lvc because of the early cut off that they have with the Turnigy & Seaking esc. That motor you have is a y wind & is suited to 11.25 degrees - 15 degress timing, low timing under 5 degrees is for d wind motors. Martin.

[Remmie81]

Oh youre right about the timing. Think I mixed something up
Well, I will be reprogramming the ESC tonight :-)
Thanks!

[Remmie81]

ok, ive been out to the pond again. Although I have to search for another pond now.
When I start to accelerate I have 3-4 sec before I have to let go the throttle again because I ran out of water.
Not bad though from 0-> (almost) 60mph in approx 3/4 seconds.
But with only having 3-4 seconds of driving I wonder if the GPS is able to record the top speed (as it needs some time to measure it).

Main thing is that I have fun with it :-)

Ive changed the timing to 15 degrees and was driving with the x440/3.
Lipo discharged a little bit more then I wanted, but thats not a problem, it was not extreme hot and or ballooning and still was at almost 3,7 volt per cell as you can see on the pictures with almost same voltages per cell.

[1945dave]

I have a Pursuit which is basically the same hull, ran it with a 4074 2150kv on 4s for a year, spinnin an x442 it would top out at 47 mph or so, I threw 5s in it once with an x 440 to see what it would do and it got to 59 mph.

Nice build you have there, very clean and well thought out. Get some vid for us!!

Make a wake, did you run the 4S with the x440? I am wondering how you got such a wide difference in mph going down a prop size and up one cell count. 12 mph seems pretty far apart.

Dave