Swordfish Pro+ 220 Running Hot

[ray schrauwen]

Ran the Q-sport today on 6S2P and the SF200 8S esc. Timing set to 10 degrees, 3.2v cutoff and it almost stalled on the taxi lap and then after about 5-6 laps (hard to remember because some goof kept cackling in my ear that I was cutting buoys, no Sh!t sherlock I was at ground level and just testing) it shut down, I would say premature LVC since I waited a few seconds and then I could drive it in to shore. Temps were around 120 all around, new heatsink plus other rudder cooling mods helped a LOT.

So, I'm back home and reprogrammed it back to defaults except for timing set at 10*. Default factory cutoff is 5Vdc and or 3.0V/Cell so, I'll try that at the race tomorrow. As long as the timing is at 10* I can change what I want wwith the box out in the field.

I need a small laptop and possibly the XT-150's are not cutting the mustard. No connector issues this time though.

I did add an Etti cap bank and this is what the esc looks like now...

I think I'll use the SF240 instead and it's set to the same settings now as the 200.

[rickwess]

Here's yesterday's run on the FE30 (TP4050 2220kv, 4S, m445). I think it's time to prop up just a little. Maybe a m447.

2014-07-27 12_56_46-2014-7-27_1.dat - Hifei.jpg

[rickwess]

Added a cap bank to the set-up now (4x (2x 470uf in series) in parallel) and am happy with the temps. Max was 52.8C. I was my typical terrible driver self and was on and off the throttle hard. You can see on the temp graph where I rolled it twice going over it's own wake.

2014-09-27 18_53_30-2014-9-27_2.dat - Hifei.jpg

I'm not convinced I have the strut set-up 100%. To be honest I'm not sure what to look for. Today I could hear the pulsing sound of the prop slapping the water then it smoothed out when it hit top speed. Perhaps it's more of a CoG issue and I need to move it back a little. It does bite in hard when cornering to the point where it looks likes it going to flip over.

I suppose it's the downside of always running the boats by myself.........no one else to provide advice.