Skippies and Kiwis

[andym]

Are your tabs located 2-3mm up from edge ?? Or are they level? 170 amps average with a m447 is high. How is your stinger set ?

[matto]

tabs are 3mm up and stinger at neuteral

[Xzessperated]

well thought i would show what i have been up to.
we had a great race facility up here on the coast, a onroad race track that could take up to 1/5 scale cars and a offroad 1/8 scale track.
a lot of people and the club put in around $50,00 towards it and the council dropped in around $250,000.
it lasted 12 months and some fat hag complained and it was shut down
that was 3 years ago and why i got back into boats.
about 6 months ago a hobby shop put in a small indoor track,its very tigh and technical but lots of fun,hopfully he will get the place next door soon and thats 4 times the size.
any way here is a video of the crashing oops mean racing
http://www.youtube.com/watch#!v=YhNU51SvS80

Good to hear from you ozzie. You need a bigger lake for them boats mate and some water. Take the tires off them and put on some props and let the fun begin.

[Xzessperated]

paddy
here is the hull i bought off you mate. i copied bits and pieces from yourself and andy and come up with this. ran it yesterday with a m 447 and puffed the lipo (tp 30c 5000 mah) averaging 170 amps, i think cause last couple of runs in my rigger , a bit of moisture got into the batt. but new tp 45c battery on it's way, and away we go. boat ran good and i'm jibberin s#it cause i just got back from the raffels with a skinfull, but just want to say thanks to paddy and andy for your help and i can't wait to race this boat

Nice work Matto. What brand was the Lipo mate?

[matto]

thanks paddy
it was a thunder power 30c 5000mah 4s

[Xzessperated]

thanks paddy
it was a thunder power 30c 5000mah 4s

I am surprised. I have a 45c 4s TP and it is my best battery. Mind you my boats only run a few second and then rest so I guess that helps. I have puffed Elite, Zippy and Flight Power but always by running longer than I should.

[matto]

yep, got 3 laps in and had to row out and get it. prob not even 1 min run time. the end of the battery where leads come out was puffed a little, and you can see where solder bled maybe from balancing taps. when it cooled down, it went back to shape and looks ok now, but i don't think i will trust it

[Simon.O.]

yep, got 3 laps in and had to row out and get it. prob not even 1 min run time. the end of the battery where leads come out was puffed a little, and you can see where solder bled maybe from balancing taps. when it cooled down, it went back to shape and looks ok now, but i don't think i will trust it

A 30C@5000mAh will provide 150A sustained for a while.

If you have bled the solder and run 170A average then I would wager that you have rooted the pack.
I have 1 setup that will pull amps like that and spike well above and it has rooted packs too.

Bottom line is: do not setup to pull major amps unless you like replacing components often.

On that note, amps is not always the killer but total watts can be a shagger of bits too.
I have just made a 9xl into a paper weight by feeding it with too many watts. I was good for amps but the watts to the motor did the damage, prolonged overheating = demagnetise.
A demaged motor will root an ESC too !!

[matto]

A 30C@5000mAh will provide 150A sustained for a while.

If you have bled the solder and run 170A average then I would wager that you have rooted the pack.
I have 1 setup that will pull amps like that and spike well above and it has rooted packs too.

Bottom line is: do not setup to pull major amps unless you like replacing components often.

On that note, amps is not always the killer but total watts can be a shagger of bits too.
I have just made a 9xl into a paper weight by feeding it with too many watts. I was good for amps but the watts to the motor did the damage, prolonged overheating = demagnetise.
A demaged motor will root an ESC too !!

do you think if the battery had previously had a little moisture in it, that could be the reason for the high amps? because there is no real drag on the way the boat is setup, esc timing at 0. i'm kinda hoping a new battery will solve my prob, but just don't want to put a new one in only to have it happen again. (maybe smaller props?)
thanks

[andym]

Only if tabs had corroded, a 1515 1Y likes some advance. I am running 15 deg on mine at the moment. I am wondering if 0 deg could cause heat and amps due to inefficiency with a Y wind motor ?

[matto]

oh, ok i did not know that. i thought i would start at 0 and work up from there. looks like i'll be doing alot of short runs at different timing settings to see whats best

[matto]

better get more tape

[andym]

I would like to see a vid of it running

[matto]

when the new battery arrives, should be late this week, i'll take the anchor with me and she can film it.

[Xzessperated]

when the new battery arrives, should be late this week, i'll take the anchor with me and she can film it.