First boat, Delta Force 35" Pirate

[johnson22456]

Peak amps on the hpr= 177a with a constant of around 130a. That was on a set of x442s. I have since ran this setup with a set of worked x447s. There amp hungry "d" wind motors.

I plan to have the same setup as millzee in the water this weekend, with the exception of using a t180.

My df33 was running really wet like his pirate is, I had to cut the strut down about 1 1/4". Brought then bow up and it's running very well now.

[millzee]

thanks fella's, thats good info, I have ordered the 35v etti cap banks to put on the t180's and the 63v to put on the sf240 and sf200, as soon as I get them I'll set it back up and get the video camera out again, third time lucky

[Rich]

63v? where did you get those caps? All you have to do is get her out of the water and she'll run like a dream.

Edit: Nevermind about the 63v I had a brain fart :)

[millzee]

63v? where did you get those caps? All you have to do is get her out of the water and she'll run like a dream.

Edit: Nevermind about the 63v I had a brain fart :)

I still have to replace the caps, I figure I'll somehow remove the swallen caps on the 2nd (mid section of esc) row, and leave the top(easy to get at) row and add the etti cap bank to replace the 2nd row, this would add an additional 2 caps to the unit. My question is, the swollen caps in the middle of the esc will be very hard to get at, will I need to take the esc apart to get at the soldering of the caps or can I just cut them off, then add the etti cap bank to the mid section of the positive and negative poles that run top to bottom through the esc. If anyone has experienced replacing the caps on a sf240 could you please chime in with some assistance??

[millzee]

So I've got the caps replaced with the etti cap bank and made up some new parallel leads, I've just ordered the m447 and I've been working on a x448(first attempt). I hope to give it another run in the next few day's but the weather is pretty bad at the moment. here's a few pic's of the repair. http://forums.offshoreelectrics.com/...ad.php?t=23178

[millzee]

I took the boat out earlier to test the adjustments I've done (trimmed the rudder, raised the trim tabs) and the repaired esc.
I used the x450 prop and ran 3x approx 1 1/2minute runs, the first run was very bouncy, it wasn't able to use full throttle for long due to it being very unstable. Only got a top speed of 76.6kph - 47.6mph, Temps were fairly low, I'll have all the temp readings included in my video when I get it done. The batteries started with 24.9v and after the third run read 22.1v. For the 2nd run I adjusted the trim tabs down a few turns and she settled a little, top speed of only 72.5kph - 45.05mph, temps still ok. I didn't wait very long for the third run so temps got a little higher although stayed within the safety limits. I moved the batteries forward 1/2" and it made the boat more stable but I guess was bordering on running a bit wet, top speed again at 72.6kph - 45.11mph. I'll have the video up soon and would appreciate if you could take the time to watch it and offer me advise on the fine tunning of this thing.

[millzee]

I finally got the video uploaded, please take a look and advise me on how to get this hull a little more stable. I'm glad I got it looser than my first two vid's but I'm not too sure which adjustments will be best to make from here. http://www.youtube.com/watch?v=yfVDJW6UXCs

http://www.youtube.com/user/1millzee?feature=mhum

[Brushless01]

Somethings not right with that setup you should be in the 60's on 6s.

[marko500]

Somethings not right with that setup you should be in the 60's on 6s.

I agree, your motor just doesn't sound like it's winding out, it should be about 35,00rpm unloaded. Or the prop is not hooking up the way it should. Please don't take this wrong but is the prop sharpened and balanced?

Mark

[Rich]

What is the timing set at? My boat didn't wake up til I advanced the timing.

[millzee]

The prop was purchased s&b, I put it on the balancer and it seemed ok. I have set the esc timing to mid, lvc to 6s and recalibrated the rx. I'm fully aware that something's not right, I just don't know what and need some help on where to start making adjustments so I can get this boat running in the 60's like it's suppose to. Should I maybe try 6s1p to lighten the load? or should I put a 447 on, try to get the strut and tabs set and then move back to the 450? In the video I added some slow motions clips to show the bounce, in the last runn I had moved the batteries forward 1/2" and it's seemed a little better but I'm not sure if I should have maybe left them back and just screwed the tabs down a tad more? With all the bounce I don't think I was driving the boat as hard as it can go, probably only 6-7/8th's of the throttle, I need some advise of where to go from here and more runtime to try and get it corrected.

[Rich]

I would really like to see your amp draw on that setup...that would allow me to give you better advice. Your caps seem to be a bit hot for my taste. The motor sounds better then it did on your previous video, but it seems a tad low still. Check for binding on the drive line, and grease the flex often. How is the boat on take off just before it gets on plane? Does it seem to need an excessive throttle? Is there cavitation?

[marko500]

I sure wish I knew more so I could help you more. But I don't have alot of experience with v-hulls, mostly cats and hydros. And all my boats run on 4s. There has to be something that we're missing, I wonder if you had an Eagletree or other type of logger if that would help you figure this out. With all the experience these guys on here have hopefully someone can help figure this out. Did you by some chance overheat that motor and cause it to demagnetize? Just trying to look at this from every possible angle.

Mark

[millzee]

I have set the esc to mid timing, the pwm is at 8khz and the lvc is set to 6s. It's been suggested by a fellow on the RRR site to take the trim tabs off and run it to get the strut angle correct and work on each thing at a time so I think I'll try that.
The amp draw seems to be around 100-120 cont. I worked it out this out roughly on the basis that the batteries started with 24.9v and after approx. 5 1/2-6minutes runtime they only had 22.1v left in them. I'll get an eagle tree system once steve get them back in stock. The motor is new and has only seen lowish temps at this stage, I don't believe it's seen any damaging temps. I could try putting in a t180, I have a couple and this might help determine weather the sf240's doing what it should and if that still does't work I suppose I could try another 1717. The boat takes off a lot better now than when I first ran it, it pop's up out of the water with only a little effort, maybe 1/2 throttle, it didn't seem too sluggish on take off's after I slowed down to almost a stop.

[marko500]

Yeah I was thinking about if you could swap out another esc to try. Hang in there, isn't this sport suppose to be fun and challenging??

Mark