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Author Topic: 30 inch brushless hydroplane project  (Read 11055 times)

Mad_Mike

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Re: 30 inch brushless hydroplane project
« Reply #50 on: August 18, 2012, 11:37:59 PM »

Fast electric has a very steep and unforgiving learning curve. F1 madness has pointed out that the 4mm flex cable will fail under the torque of the motor, unfortunatly for me thats the same propshaft thats installed in my boat. I use a 40mm 1.4 pitch graupner propeller diven by a 2000kv 3754 outrunner on 4s. The first two outings ive had were succesful but a bit too slow so im upping to 5s, the batteries havent arrived yet i just hope it all holds out. touch wood {:-{
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loveboat

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Re: 30 inch brushless hydroplane project
« Reply #51 on: August 18, 2012, 11:47:25 PM »

would it be worth changing it now or just using it till it fails ,

id use 5s or even 6s but that motor will only handle 4s so stuck with them but i dont think thats a bad thing really i only got my first rc boat 4 weeks ago so a boat on 6s might be a bit too far yet lol

alot of what ive done so far is pure guess work having never done any of this before the whole project minus the batterys has only cost me 130 which i thinks pretty good i know i could of bought something better for the money but half the fun was building it and working things out ive really enjoyed it  :}
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loveboat

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Re: 30 inch brushless hydroplane project
« Reply #52 on: August 18, 2012, 11:59:59 PM »

just ordered an x443 prop , going to order some 4mm bullits for the lipos and esc as well and going to plate up the motor mount tomorrow

is there anything else that i will need to address

cheers guys
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Mad_Mike

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Re: 30 inch brushless hydroplane project
« Reply #53 on: August 19, 2012, 12:03:16 AM »

my shaft has held ok so far so for now ill stick with it unless it fails. Hope not (touch wood). I would have thought that your motor should be able to withstand 5 or 6s. have you got a link to where you got it?

You will need a method of recovery for your boat by they way.
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Mad_Mike

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Re: 30 inch brushless hydroplane project
« Reply #54 on: August 19, 2012, 12:04:06 AM »

just ordered an x443 prop , going to order some 4mm bullits for the lipos and esc as well and going to plate up the motor mount tomorrow

is there anything else that i will need to address

cheers guys

have you got a good soldering iron for those bullets?
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loveboat

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Re: 30 inch brushless hydroplane project
« Reply #55 on: August 19, 2012, 12:08:17 AM »

my shaft has held ok so far so for now ill stick with it unless it fails. Hope not (touch wood). I would have thought that your motor should be able to withstand 5 or 6s. have you got a link to where you got it?

You will need a method of recovery for your boat by they way.

got a way of getting the boat back i was planning on pushing it back with one of my others lol

yeah got a good soldering iron
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gwa84the2nd

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Re: 30 inch brushless hydroplane project
« Reply #56 on: August 21, 2012, 10:03:10 PM »

just to point you in the right direction hears your style of hull in fibre glass avail in uk  :-))

http://www.performancemodels.co.uk/product_category/hydroplane/
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loveboat

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Re: 30 inch brushless hydroplane project
« Reply #57 on: August 21, 2012, 11:20:33 PM »

just to point you in the right direction hears your style of hull in fibre glass avail in uk  :-))

http://www.performancemodels.co.uk/product_category/hydroplane/

just bookmarked that cheers buddy  :-))
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armc40

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Re: 30 inch brushless hydroplane project
« Reply #58 on: August 22, 2012, 12:12:37 AM »

And always remember that the lessons best learnt are those born of mistakes and successes in equal measures if at all possible


More pics soon mate       

Bill       :-))   







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Making a mistake is not a sign of weakness. Failure to admit to having made a mistake is though !

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loveboat

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Re: 30 inch brushless hydroplane project
« Reply #59 on: August 22, 2012, 11:23:56 AM »

keep um coming bill lol

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loveboat

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Re: 30 inch brushless hydroplane project
« Reply #60 on: August 22, 2012, 04:19:46 PM »

another mod i just finished is a receiver and esc box.

i made this out of a savox servo box its not going to be 100% waterproof because of the lid but it will add some protection and it makes it look a little better

ive also cut and fitted a alloy plate to the bottom of the hull and bolted the motor mount through the hull and alloy plate there so now no flex at all so should be plenty strong enough

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loveboat

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Re: 30 inch brushless hydroplane project
« Reply #61 on: August 30, 2012, 01:37:26 PM »

my esc has come time for a test run i think  :-)
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Arrow5

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Re: 30 inch brushless hydroplane project
« Reply #62 on: August 30, 2012, 01:50:14 PM »

If you get a chance I`d be interested to know the total weight , ready to run.  Dont forget the pictures/video of the float test :-))
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..well can you land on this?

loveboat

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Re: 30 inch brushless hydroplane project
« Reply #63 on: August 30, 2012, 05:12:20 PM »

well im totally gutted all that money ive spent and it goes 10mph tops
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Martin [Admin]

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Re: 30 inch brushless hydroplane project
« Reply #64 on: August 30, 2012, 05:54:40 PM »


 :(( - How disappointing, what's up?

 Does the motor rev OK?   If so, I suspect motor, prop pitch /size mismatch.


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Mad_Mike

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Re: 30 inch brushless hydroplane project
« Reply #65 on: August 30, 2012, 09:56:48 PM »

theres threads all over the net about people who have modified this perticular boat (NQD sports game) and all of them comment about how disapointing the final result is.

heres an example of a brushless converted one, same result:

http://www.youtube.com/watch?v=Zj5OjoX95nY&feature=related
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loveboat

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Re: 30 inch brushless hydroplane project
« Reply #66 on: August 31, 2012, 03:24:14 AM »

im gutted , has anyone get a suitable hull the swap all the gear over too
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loveboat

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Re: 30 inch brushless hydroplane project
« Reply #67 on: September 08, 2012, 10:16:59 AM »

All parts and boat for sale
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spearfish99

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Re: 30 inch brushless hydroplane project
« Reply #68 on: September 08, 2012, 04:10:14 PM »

That is a pity.  It looked so good, suppose it is inherently a poor hull.

Inspired by your efforts, I have dug  a 24" hydro that I built but never finished or ran in the early 80's. Been sitting in the garage ever since.

  Powered originally by 700BB and using nicads! and Turnigy 30A ESC.  Might be a candidate for a brushless of some size or might just finish it off and try running it on 3S or 4S lipos.






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loveboat

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Re: 30 inch brushless hydroplane project
« Reply #69 on: September 09, 2012, 07:14:01 PM »

You'll need to buy a new esc and motor as running lipos on a brushed motor will kill it very quick , which I have if your interested lol
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Andyn

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Re: 30 inch brushless hydroplane project
« Reply #70 on: September 09, 2012, 08:21:54 PM »

Or, maybe it won't kill it at all...
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loveboat

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Re: 30 inch brushless hydroplane project
« Reply #71 on: September 09, 2012, 09:11:18 PM »

You can't use lipos with a brushed setup
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Stormbringer

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Re: 30 inch brushless hydroplane project
« Reply #72 on: September 09, 2012, 09:30:43 PM »

err yes you can use lipo's with brushed motors so long as the esc is lipo compatable ( whether you use a brushed esc with a low violtage alarm or a or low volt cutoff )
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Mad_Mike

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Re: 30 inch brushless hydroplane project
« Reply #73 on: September 09, 2012, 09:46:49 PM »

loveboat why have you given up so early?  {:-{
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loveboat

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Re: 30 inch brushless hydroplane project
« Reply #74 on: September 09, 2012, 10:07:51 PM »

Didn't realise Lipo compatible escs were around in the 1980 s , ill just keep my mouth shut now , do what you want pal
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